./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/array-tiling/rew.c --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-tiling/rew.c -s /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash a4dbd52ad78119a422ea606f98f820bbe5495fb5a7cf8886c665da2d1f9b569e --- Real Ultimate output --- This is Ultimate 0.3.0-?-551b009-m [2025-01-08 22:19:08,685 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-01-08 22:19:08,725 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2025-01-08 22:19:08,728 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-01-08 22:19:08,728 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-01-08 22:19:08,742 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-01-08 22:19:08,742 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-01-08 22:19:08,742 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-01-08 22:19:08,743 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-01-08 22:19:08,743 INFO L153 SettingsManager]: * Use memory slicer=true [2025-01-08 22:19:08,743 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-01-08 22:19:08,743 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-01-08 22:19:08,743 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-01-08 22:19:08,743 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-01-08 22:19:08,743 INFO L153 SettingsManager]: * Use SBE=true [2025-01-08 22:19:08,743 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-01-08 22:19:08,744 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2025-01-08 22:19:08,744 INFO L153 SettingsManager]: * sizeof long=4 [2025-01-08 22:19:08,744 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-01-08 22:19:08,744 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-01-08 22:19:08,744 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-01-08 22:19:08,744 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2025-01-08 22:19:08,744 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-01-08 22:19:08,744 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2025-01-08 22:19:08,744 INFO L153 SettingsManager]: * sizeof long double=12 [2025-01-08 22:19:08,744 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2025-01-08 22:19:08,744 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-01-08 22:19:08,745 INFO L153 SettingsManager]: * Use constant arrays=true [2025-01-08 22:19:08,745 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-01-08 22:19:08,745 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-01-08 22:19:08,745 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-01-08 22:19:08,745 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-01-08 22:19:08,745 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-01-08 22:19:08,745 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2025-01-08 22:19:08,745 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-01-08 22:19:08,745 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-01-08 22:19:08,745 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-01-08 22:19:08,745 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-01-08 22:19:08,746 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-01-08 22:19:08,746 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-01-08 22:19:08,746 INFO L153 SettingsManager]: * Compute procedure contracts=false [2025-01-08 22:19:08,746 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2025-01-08 22:19:08,746 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-01-08 22:19:08,746 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2025-01-08 22:19:08,746 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2025-01-08 22:19:08,746 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-01-08 22:19:08,746 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-01-08 22:19:08,746 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-01-08 22:19:08,746 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 -> a4dbd52ad78119a422ea606f98f820bbe5495fb5a7cf8886c665da2d1f9b569e [2025-01-08 22:19:08,962 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-01-08 22:19:08,970 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-01-08 22:19:08,973 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-01-08 22:19:08,974 INFO L270 PluginConnector]: Initializing CDTParser... [2025-01-08 22:19:08,974 INFO L274 PluginConnector]: CDTParser initialized [2025-01-08 22:19:08,974 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/array-tiling/rew.c [2025-01-08 22:19:10,123 INFO L533 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/3bd732d7a/5592477661fc45c9b8cd9efb0e6e6b6a/FLAG08ff0419a [2025-01-08 22:19:10,365 INFO L384 CDTParser]: Found 1 translation units. [2025-01-08 22:19:10,366 INFO L180 CDTParser]: Scanning /storage/repos/ultimate-jdk21/releaseScripts/default/sv-benchmarks/c/array-tiling/rew.c [2025-01-08 22:19:10,371 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/3bd732d7a/5592477661fc45c9b8cd9efb0e6e6b6a/FLAG08ff0419a [2025-01-08 22:19:10,689 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/3bd732d7a/5592477661fc45c9b8cd9efb0e6e6b6a [2025-01-08 22:19:10,691 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-01-08 22:19:10,692 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2025-01-08 22:19:10,693 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-01-08 22:19:10,693 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-01-08 22:19:10,695 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-01-08 22:19:10,696 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.01 10:19:10" (1/1) ... [2025-01-08 22:19:10,696 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6a5d3808 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.01 10:19:10, skipping insertion in model container [2025-01-08 22:19:10,696 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.01 10:19:10" (1/1) ... [2025-01-08 22:19:10,705 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-01-08 22:19:10,783 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-tiling/rew.c[394,407] [2025-01-08 22:19:10,791 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-01-08 22:19:10,797 INFO L200 MainTranslator]: Completed pre-run [2025-01-08 22:19:10,806 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-tiling/rew.c[394,407] [2025-01-08 22:19:10,809 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-01-08 22:19:10,817 INFO L204 MainTranslator]: Completed translation [2025-01-08 22:19:10,818 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.01 10:19:10 WrapperNode [2025-01-08 22:19:10,818 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-01-08 22:19:10,818 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-01-08 22:19:10,818 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-01-08 22:19:10,819 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-01-08 22:19:10,822 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.01 10:19:10" (1/1) ... [2025-01-08 22:19:10,825 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.01 10:19:10" (1/1) ... [2025-01-08 22:19:10,833 INFO L138 Inliner]: procedures = 16, calls = 18, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 53 [2025-01-08 22:19:10,834 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-01-08 22:19:10,834 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-01-08 22:19:10,834 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-01-08 22:19:10,834 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-01-08 22:19:10,838 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.01 10:19:10" (1/1) ... [2025-01-08 22:19:10,838 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.01 10:19:10" (1/1) ... [2025-01-08 22:19:10,839 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.01 10:19:10" (1/1) ... [2025-01-08 22:19:10,849 INFO L175 MemorySlicer]: Split 11 memory accesses to 3 slices as follows [2, 6, 3]. 55 percent of accesses are in the largest equivalence class. The 8 initializations are split as follows [2, 6, 0]. The 2 writes are split as follows [0, 0, 2]. [2025-01-08 22:19:10,850 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.01 10:19:10" (1/1) ... [2025-01-08 22:19:10,850 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.01 10:19:10" (1/1) ... [2025-01-08 22:19:10,852 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.01 10:19:10" (1/1) ... [2025-01-08 22:19:10,852 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.01 10:19:10" (1/1) ... [2025-01-08 22:19:10,854 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.01 10:19:10" (1/1) ... [2025-01-08 22:19:10,854 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.01 10:19:10" (1/1) ... [2025-01-08 22:19:10,855 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.01 10:19:10" (1/1) ... [2025-01-08 22:19:10,856 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-01-08 22:19:10,856 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2025-01-08 22:19:10,856 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2025-01-08 22:19:10,856 INFO L274 PluginConnector]: RCFGBuilder initialized [2025-01-08 22:19:10,857 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.01 10:19:10" (1/1) ... [2025-01-08 22:19:10,860 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-01-08 22:19:10,868 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-08 22:19:10,877 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 22:19:10,881 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 22:19:10,893 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2025-01-08 22:19:10,893 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2025-01-08 22:19:10,893 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2025-01-08 22:19:10,893 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2025-01-08 22:19:10,893 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2025-01-08 22:19:10,893 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2025-01-08 22:19:10,893 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2025-01-08 22:19:10,893 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2025-01-08 22:19:10,893 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-01-08 22:19:10,893 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-01-08 22:19:10,893 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2025-01-08 22:19:10,893 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2025-01-08 22:19:10,893 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2025-01-08 22:19:10,934 INFO L234 CfgBuilder]: Building ICFG [2025-01-08 22:19:10,935 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2025-01-08 22:19:11,007 INFO L? ?]: Removed 6 outVars from TransFormulas that were not future-live. [2025-01-08 22:19:11,007 INFO L283 CfgBuilder]: Performing block encoding [2025-01-08 22:19:11,013 INFO L307 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-01-08 22:19:11,013 INFO L312 CfgBuilder]: Removed 0 assume(true) statements. [2025-01-08 22:19:11,013 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 08.01 10:19:11 BoogieIcfgContainer [2025-01-08 22:19:11,013 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2025-01-08 22:19:11,015 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2025-01-08 22:19:11,015 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2025-01-08 22:19:11,018 INFO L274 PluginConnector]: TraceAbstraction initialized [2025-01-08 22:19:11,018 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 08.01 10:19:10" (1/3) ... [2025-01-08 22:19:11,018 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@26f0ca23 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.01 10:19:11, skipping insertion in model container [2025-01-08 22:19:11,018 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.01 10:19:10" (2/3) ... [2025-01-08 22:19:11,018 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@26f0ca23 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.01 10:19:11, skipping insertion in model container [2025-01-08 22:19:11,019 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 08.01 10:19:11" (3/3) ... [2025-01-08 22:19:11,019 INFO L128 eAbstractionObserver]: Analyzing ICFG rew.c [2025-01-08 22:19:11,028 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2025-01-08 22:19:11,029 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG rew.c that has 1 procedures, 15 locations, 1 initial locations, 2 loop locations, and 1 error locations. [2025-01-08 22:19:11,059 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-01-08 22:19:11,066 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;@20693741, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-01-08 22:19:11,066 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2025-01-08 22:19:11,068 INFO L276 IsEmpty]: Start isEmpty. Operand has 15 states, 13 states have (on average 1.4615384615384615) internal successors, (19), 14 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 22:19:11,071 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2025-01-08 22:19:11,071 INFO L210 NwaCegarLoop]: Found error trace [2025-01-08 22:19:11,071 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2025-01-08 22:19:11,071 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-01-08 22:19:11,074 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-08 22:19:11,074 INFO L85 PathProgramCache]: Analyzing trace with hash 1805244424, now seen corresponding path program 1 times [2025-01-08 22:19:11,078 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-08 22:19:11,079 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [920909294] [2025-01-08 22:19:11,079 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-08 22:19:11,079 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-08 22:19:11,127 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 7 statements into 1 equivalence classes. [2025-01-08 22:19:11,141 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 7 of 7 statements. [2025-01-08 22:19:11,142 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-08 22:19:11,142 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-08 22:19:11,251 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 22:19:11,251 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-08 22:19:11,251 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [920909294] [2025-01-08 22:19:11,255 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [920909294] provided 1 perfect and 0 imperfect interpolant sequences [2025-01-08 22:19:11,255 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-01-08 22:19:11,255 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-01-08 22:19:11,256 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [393069678] [2025-01-08 22:19:11,256 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-01-08 22:19:11,258 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-01-08 22:19:11,259 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-08 22:19:11,271 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-01-08 22:19:11,271 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-01-08 22:19:11,272 INFO L87 Difference]: Start difference. First operand has 15 states, 13 states have (on average 1.4615384615384615) internal successors, (19), 14 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) 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 22:19:11,310 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-08 22:19:11,311 INFO L93 Difference]: Finished difference Result 30 states and 39 transitions. [2025-01-08 22:19:11,314 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-01-08 22:19:11,315 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 22:19:11,315 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-08 22:19:11,319 INFO L225 Difference]: With dead ends: 30 [2025-01-08 22:19:11,319 INFO L226 Difference]: Without dead ends: 14 [2025-01-08 22:19:11,322 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 22:19:11,324 INFO L435 NwaCegarLoop]: 15 mSDtfsCounter, 2 mSDsluCounter, 5 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 20 SdHoareTripleChecker+Invalid, 16 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-01-08 22:19:11,325 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 20 Invalid, 16 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-01-08 22:19:11,334 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14 states. [2025-01-08 22:19:11,341 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14 to 13. [2025-01-08 22:19:11,342 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13 states, 12 states have (on average 1.25) internal successors, (15), 12 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 22:19:11,344 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 15 transitions. [2025-01-08 22:19:11,345 INFO L78 Accepts]: Start accepts. Automaton has 13 states and 15 transitions. Word has length 7 [2025-01-08 22:19:11,345 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-08 22:19:11,345 INFO L471 AbstractCegarLoop]: Abstraction has 13 states and 15 transitions. [2025-01-08 22:19:11,345 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 22:19:11,345 INFO L276 IsEmpty]: Start isEmpty. Operand 13 states and 15 transitions. [2025-01-08 22:19:11,346 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2025-01-08 22:19:11,346 INFO L210 NwaCegarLoop]: Found error trace [2025-01-08 22:19:11,346 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-08 22:19:11,346 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2025-01-08 22:19:11,346 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-01-08 22:19:11,348 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-08 22:19:11,348 INFO L85 PathProgramCache]: Analyzing trace with hash -1236293039, now seen corresponding path program 1 times [2025-01-08 22:19:11,348 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-08 22:19:11,348 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1787512821] [2025-01-08 22:19:11,348 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-08 22:19:11,349 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-08 22:19:11,367 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 10 statements into 1 equivalence classes. [2025-01-08 22:19:11,382 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 10 of 10 statements. [2025-01-08 22:19:11,384 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-08 22:19:11,385 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-08 22:19:11,475 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 22:19:11,475 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-08 22:19:11,475 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1787512821] [2025-01-08 22:19:11,475 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1787512821] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-08 22:19:11,475 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2123704018] [2025-01-08 22:19:11,475 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-08 22:19:11,475 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-08 22:19:11,475 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-08 22:19:11,484 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 22:19:11,488 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 22:19:11,544 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 10 statements into 1 equivalence classes. [2025-01-08 22:19:11,568 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 10 of 10 statements. [2025-01-08 22:19:11,569 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-08 22:19:11,569 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-08 22:19:11,570 INFO L256 TraceCheckSpWp]: Trace formula consists of 86 conjuncts, 4 conjuncts are in the unsatisfiable core [2025-01-08 22:19:11,574 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-08 22:19:11,638 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 22:19:11,641 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-01-08 22:19:11,670 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 22:19:11,671 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2123704018] provided 0 perfect and 2 imperfect interpolant sequences [2025-01-08 22:19:11,671 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-01-08 22:19:11,671 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 7 [2025-01-08 22:19:11,672 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1596837194] [2025-01-08 22:19:11,672 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-01-08 22:19:11,673 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2025-01-08 22:19:11,673 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-08 22:19:11,673 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2025-01-08 22:19:11,673 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=22, Unknown=0, NotChecked=0, Total=42 [2025-01-08 22:19:11,674 INFO L87 Difference]: Start difference. First operand 13 states and 15 transitions. Second operand has 7 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 7 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 22:19:11,730 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-08 22:19:11,730 INFO L93 Difference]: Finished difference Result 25 states and 30 transitions. [2025-01-08 22:19:11,730 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2025-01-08 22:19:11,731 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 7 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) Word has length 10 [2025-01-08 22:19:11,731 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-08 22:19:11,731 INFO L225 Difference]: With dead ends: 25 [2025-01-08 22:19:11,732 INFO L226 Difference]: Without dead ends: 20 [2025-01-08 22:19:11,733 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 16 SyntacticMatches, 1 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=29, Unknown=0, NotChecked=0, Total=56 [2025-01-08 22:19:11,733 INFO L435 NwaCegarLoop]: 8 mSDtfsCounter, 12 mSDsluCounter, 6 mSDsCounter, 0 mSdLazyCounter, 21 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 14 SdHoareTripleChecker+Invalid, 25 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 21 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-01-08 22:19:11,734 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 14 Invalid, 25 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 21 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-01-08 22:19:11,735 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20 states. [2025-01-08 22:19:11,738 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20 to 15. [2025-01-08 22:19:11,738 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15 states, 14 states have (on average 1.2142857142857142) internal successors, (17), 14 states have internal predecessors, (17), 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 22:19:11,738 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 17 transitions. [2025-01-08 22:19:11,739 INFO L78 Accepts]: Start accepts. Automaton has 15 states and 17 transitions. Word has length 10 [2025-01-08 22:19:11,739 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-08 22:19:11,739 INFO L471 AbstractCegarLoop]: Abstraction has 15 states and 17 transitions. [2025-01-08 22:19:11,739 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 7 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 22:19:11,739 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states and 17 transitions. [2025-01-08 22:19:11,739 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2025-01-08 22:19:11,739 INFO L210 NwaCegarLoop]: Found error trace [2025-01-08 22:19:11,740 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-08 22:19:11,746 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2025-01-08 22:19:11,940 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 22:19:11,940 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-01-08 22:19:11,942 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-08 22:19:11,942 INFO L85 PathProgramCache]: Analyzing trace with hash -696551258, now seen corresponding path program 1 times [2025-01-08 22:19:11,942 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-08 22:19:11,942 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1893877712] [2025-01-08 22:19:11,942 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-08 22:19:11,943 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-08 22:19:11,949 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 13 statements into 1 equivalence classes. [2025-01-08 22:19:11,965 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 13 of 13 statements. [2025-01-08 22:19:11,965 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-08 22:19:11,965 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-08 22:19:12,282 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-08 22:19:12,282 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-08 22:19:12,282 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1893877712] [2025-01-08 22:19:12,282 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1893877712] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-08 22:19:12,282 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [879249704] [2025-01-08 22:19:12,282 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-08 22:19:12,282 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-08 22:19:12,282 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-08 22:19:12,287 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 22:19:12,289 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 22:19:12,317 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 13 statements into 1 equivalence classes. [2025-01-08 22:19:12,328 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 13 of 13 statements. [2025-01-08 22:19:12,328 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-08 22:19:12,328 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-08 22:19:12,329 INFO L256 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 17 conjuncts are in the unsatisfiable core [2025-01-08 22:19:12,330 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-08 22:19:12,385 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2025-01-08 22:19:12,431 INFO L190 IndexEqualityManager]: detected not equals via solver [2025-01-08 22:19:12,432 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 20 [2025-01-08 22:19:12,538 INFO L190 IndexEqualityManager]: detected not equals via solver [2025-01-08 22:19:12,542 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-01-08 22:19:12,542 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 30 treesize of output 10 [2025-01-08 22:19:12,570 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-08 22:19:12,570 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-01-08 22:19:12,648 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 23 treesize of output 21 [2025-01-08 22:19:12,652 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 52 treesize of output 50 [2025-01-08 22:19:12,698 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-08 22:19:12,699 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [879249704] provided 0 perfect and 2 imperfect interpolant sequences [2025-01-08 22:19:12,699 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-01-08 22:19:12,699 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 16 [2025-01-08 22:19:12,699 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1120279535] [2025-01-08 22:19:12,699 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-01-08 22:19:12,700 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2025-01-08 22:19:12,700 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-08 22:19:12,700 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2025-01-08 22:19:12,700 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=192, Unknown=0, NotChecked=0, Total=240 [2025-01-08 22:19:12,701 INFO L87 Difference]: Start difference. First operand 15 states and 17 transitions. Second operand has 16 states, 16 states have (on average 2.0) internal successors, (32), 16 states have internal predecessors, (32), 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 22:19:12,874 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-08 22:19:12,874 INFO L93 Difference]: Finished difference Result 24 states and 27 transitions. [2025-01-08 22:19:12,874 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2025-01-08 22:19:12,875 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 2.0) internal successors, (32), 16 states have internal predecessors, (32), 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 13 [2025-01-08 22:19:12,875 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-08 22:19:12,875 INFO L225 Difference]: With dead ends: 24 [2025-01-08 22:19:12,875 INFO L226 Difference]: Without dead ends: 22 [2025-01-08 22:19:12,876 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 16 SyntacticMatches, 1 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 53 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=93, Invalid=287, Unknown=0, NotChecked=0, Total=380 [2025-01-08 22:19:12,876 INFO L435 NwaCegarLoop]: 6 mSDtfsCounter, 38 mSDsluCounter, 25 mSDsCounter, 0 mSdLazyCounter, 115 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 38 SdHoareTripleChecker+Valid, 31 SdHoareTripleChecker+Invalid, 126 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 115 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-01-08 22:19:12,876 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [38 Valid, 31 Invalid, 126 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 115 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-01-08 22:19:12,877 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22 states. [2025-01-08 22:19:12,879 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22 to 17. [2025-01-08 22:19:12,879 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17 states, 16 states have (on average 1.1875) internal successors, (19), 16 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 22:19:12,880 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 19 transitions. [2025-01-08 22:19:12,880 INFO L78 Accepts]: Start accepts. Automaton has 17 states and 19 transitions. Word has length 13 [2025-01-08 22:19:12,880 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-08 22:19:12,880 INFO L471 AbstractCegarLoop]: Abstraction has 17 states and 19 transitions. [2025-01-08 22:19:12,880 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 2.0) internal successors, (32), 16 states have internal predecessors, (32), 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 22:19:12,880 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states and 19 transitions. [2025-01-08 22:19:12,881 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2025-01-08 22:19:12,881 INFO L210 NwaCegarLoop]: Found error trace [2025-01-08 22:19:12,881 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-08 22:19:12,888 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2025-01-08 22:19:13,085 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 22:19:13,085 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-01-08 22:19:13,086 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-08 22:19:13,086 INFO L85 PathProgramCache]: Analyzing trace with hash -1966731598, now seen corresponding path program 1 times [2025-01-08 22:19:13,086 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-08 22:19:13,086 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1488704297] [2025-01-08 22:19:13,086 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-08 22:19:13,086 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-08 22:19:13,093 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 16 statements into 1 equivalence classes. [2025-01-08 22:19:13,112 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 16 of 16 statements. [2025-01-08 22:19:13,113 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-08 22:19:13,113 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-08 22:19:13,366 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-08 22:19:13,366 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-08 22:19:13,366 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1488704297] [2025-01-08 22:19:13,366 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1488704297] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-08 22:19:13,366 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [23180263] [2025-01-08 22:19:13,366 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-08 22:19:13,366 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-08 22:19:13,366 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-08 22:19:13,369 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 22:19:13,370 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 22:19:13,397 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 16 statements into 1 equivalence classes. [2025-01-08 22:19:13,408 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 16 of 16 statements. [2025-01-08 22:19:13,408 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-08 22:19:13,408 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-08 22:19:13,409 INFO L256 TraceCheckSpWp]: Trace formula consists of 104 conjuncts, 18 conjuncts are in the unsatisfiable core [2025-01-08 22:19:13,410 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-08 22:19:13,470 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2025-01-08 22:19:13,556 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 22:19:13,572 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-08 22:19:13,572 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-01-08 22:19:13,626 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 16 [2025-01-08 22:19:13,628 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 20 [2025-01-08 22:19:13,668 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-08 22:19:13,668 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [23180263] provided 0 perfect and 2 imperfect interpolant sequences [2025-01-08 22:19:13,668 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-01-08 22:19:13,668 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 19 [2025-01-08 22:19:13,669 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1925535400] [2025-01-08 22:19:13,669 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-01-08 22:19:13,669 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2025-01-08 22:19:13,669 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-08 22:19:13,669 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2025-01-08 22:19:13,670 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=61, Invalid=281, Unknown=0, NotChecked=0, Total=342 [2025-01-08 22:19:13,670 INFO L87 Difference]: Start difference. First operand 17 states and 19 transitions. Second operand has 19 states, 19 states have (on average 2.1578947368421053) internal successors, (41), 19 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-08 22:19:13,775 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-08 22:19:13,776 INFO L93 Difference]: Finished difference Result 39 states and 44 transitions. [2025-01-08 22:19:13,776 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2025-01-08 22:19:13,776 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 2.1578947368421053) internal successors, (41), 19 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 16 [2025-01-08 22:19:13,776 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-08 22:19:13,776 INFO L225 Difference]: With dead ends: 39 [2025-01-08 22:19:13,776 INFO L226 Difference]: Without dead ends: 37 [2025-01-08 22:19:13,777 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 20 SyntacticMatches, 1 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 97 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=71, Invalid=309, Unknown=0, NotChecked=0, Total=380 [2025-01-08 22:19:13,777 INFO L435 NwaCegarLoop]: 11 mSDtfsCounter, 17 mSDsluCounter, 70 mSDsCounter, 0 mSdLazyCounter, 181 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 17 SdHoareTripleChecker+Valid, 81 SdHoareTripleChecker+Invalid, 181 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 181 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-01-08 22:19:13,777 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [17 Valid, 81 Invalid, 181 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 181 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-01-08 22:19:13,778 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37 states. [2025-01-08 22:19:13,781 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 25. [2025-01-08 22:19:13,781 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 22:19:13,781 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 29 transitions. [2025-01-08 22:19:13,781 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 29 transitions. Word has length 16 [2025-01-08 22:19:13,781 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-08 22:19:13,782 INFO L471 AbstractCegarLoop]: Abstraction has 25 states and 29 transitions. [2025-01-08 22:19:13,782 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 2.1578947368421053) internal successors, (41), 19 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-08 22:19:13,782 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 29 transitions. [2025-01-08 22:19:13,782 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2025-01-08 22:19:13,782 INFO L210 NwaCegarLoop]: Found error trace [2025-01-08 22:19:13,782 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-08 22:19:13,790 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 22:19:13,987 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 22:19:13,987 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-01-08 22:19:13,988 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-08 22:19:13,988 INFO L85 PathProgramCache]: Analyzing trace with hash 1668136585, now seen corresponding path program 2 times [2025-01-08 22:19:13,988 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-08 22:19:13,988 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [738713324] [2025-01-08 22:19:13,988 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-01-08 22:19:13,988 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-08 22:19:13,994 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 19 statements into 2 equivalence classes. [2025-01-08 22:19:14,003 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 19 of 19 statements. [2025-01-08 22:19:14,003 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-01-08 22:19:14,003 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-08 22:19:14,225 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-08 22:19:14,225 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-08 22:19:14,225 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [738713324] [2025-01-08 22:19:14,225 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [738713324] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-08 22:19:14,225 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1313220332] [2025-01-08 22:19:14,225 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-01-08 22:19:14,225 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-08 22:19:14,225 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-08 22:19:14,229 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 22:19:14,231 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 22:19:14,261 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 19 statements into 2 equivalence classes. [2025-01-08 22:19:14,274 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 19 of 19 statements. [2025-01-08 22:19:14,274 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-01-08 22:19:14,274 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-08 22:19:14,275 INFO L256 TraceCheckSpWp]: Trace formula consists of 116 conjuncts, 21 conjuncts are in the unsatisfiable core [2025-01-08 22:19:14,279 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-08 22:19:14,342 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2025-01-08 22:19:14,385 INFO L190 IndexEqualityManager]: detected not equals via solver [2025-01-08 22:19:14,386 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 20 [2025-01-08 22:19:14,502 INFO L190 IndexEqualityManager]: detected not equals via solver [2025-01-08 22:19:14,504 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-01-08 22:19:14,504 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 28 treesize of output 10 [2025-01-08 22:19:14,523 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-08 22:19:14,523 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-01-08 22:19:14,628 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 23 [2025-01-08 22:19:14,631 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 54 treesize of output 50 [2025-01-08 22:19:14,684 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-08 22:19:14,684 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1313220332] provided 0 perfect and 2 imperfect interpolant sequences [2025-01-08 22:19:14,684 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-01-08 22:19:14,684 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 22 [2025-01-08 22:19:14,685 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1285225929] [2025-01-08 22:19:14,685 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-01-08 22:19:14,685 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2025-01-08 22:19:14,685 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-08 22:19:14,685 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2025-01-08 22:19:14,686 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=70, Invalid=392, Unknown=0, NotChecked=0, Total=462 [2025-01-08 22:19:14,686 INFO L87 Difference]: Start difference. First operand 25 states and 29 transitions. Second operand has 22 states, 22 states have (on average 2.272727272727273) internal successors, (50), 22 states have internal predecessors, (50), 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 22:19:14,967 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-08 22:19:14,968 INFO L93 Difference]: Finished difference Result 43 states and 48 transitions. [2025-01-08 22:19:14,968 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2025-01-08 22:19:14,968 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 2.272727272727273) internal successors, (50), 22 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2025-01-08 22:19:14,968 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-08 22:19:14,968 INFO L225 Difference]: With dead ends: 43 [2025-01-08 22:19:14,969 INFO L226 Difference]: Without dead ends: 41 [2025-01-08 22:19:14,969 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 24 SyntacticMatches, 1 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 128 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=168, Invalid=702, Unknown=0, NotChecked=0, Total=870 [2025-01-08 22:19:14,969 INFO L435 NwaCegarLoop]: 11 mSDtfsCounter, 58 mSDsluCounter, 59 mSDsCounter, 0 mSdLazyCounter, 268 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 58 SdHoareTripleChecker+Valid, 70 SdHoareTripleChecker+Invalid, 284 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 268 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-01-08 22:19:14,969 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [58 Valid, 70 Invalid, 284 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 268 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-01-08 22:19:14,970 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41 states. [2025-01-08 22:19:14,975 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41 to 20. [2025-01-08 22:19:14,976 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20 states, 19 states have (on average 1.1578947368421053) internal successors, (22), 19 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-08 22:19:14,976 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 22 transitions. [2025-01-08 22:19:14,977 INFO L78 Accepts]: Start accepts. Automaton has 20 states and 22 transitions. Word has length 19 [2025-01-08 22:19:14,977 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-08 22:19:14,977 INFO L471 AbstractCegarLoop]: Abstraction has 20 states and 22 transitions. [2025-01-08 22:19:14,977 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 2.272727272727273) internal successors, (50), 22 states have internal predecessors, (50), 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 22:19:14,977 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 22 transitions. [2025-01-08 22:19:14,977 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2025-01-08 22:19:14,977 INFO L210 NwaCegarLoop]: Found error trace [2025-01-08 22:19:14,977 INFO L218 NwaCegarLoop]: trace histogram [3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-08 22:19:14,987 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 22:19:15,178 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 22:19:15,178 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-01-08 22:19:15,179 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-08 22:19:15,179 INFO L85 PathProgramCache]: Analyzing trace with hash 1047604518, now seen corresponding path program 3 times [2025-01-08 22:19:15,179 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-08 22:19:15,179 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [340628497] [2025-01-08 22:19:15,179 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-01-08 22:19:15,179 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-08 22:19:15,186 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 19 statements into 3 equivalence classes. [2025-01-08 22:19:15,200 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) and asserted 19 of 19 statements. [2025-01-08 22:19:15,200 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2025-01-08 22:19:15,200 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-08 22:19:15,274 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 3 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-08 22:19:15,274 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-08 22:19:15,274 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [340628497] [2025-01-08 22:19:15,275 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [340628497] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-08 22:19:15,275 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2124989851] [2025-01-08 22:19:15,275 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-01-08 22:19:15,275 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-08 22:19:15,275 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-08 22:19:15,276 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 22:19:15,277 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 22:19:15,305 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 19 statements into 3 equivalence classes. [2025-01-08 22:19:15,317 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) and asserted 19 of 19 statements. [2025-01-08 22:19:15,317 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2025-01-08 22:19:15,317 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-08 22:19:15,318 INFO L256 TraceCheckSpWp]: Trace formula consists of 114 conjuncts, 7 conjuncts are in the unsatisfiable core [2025-01-08 22:19:15,318 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-08 22:19:15,376 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 7 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-08 22:19:15,377 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-01-08 22:19:15,407 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 7 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-08 22:19:15,407 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2124989851] provided 0 perfect and 2 imperfect interpolant sequences [2025-01-08 22:19:15,407 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-01-08 22:19:15,408 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 13 [2025-01-08 22:19:15,408 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1138163457] [2025-01-08 22:19:15,408 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-01-08 22:19:15,408 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2025-01-08 22:19:15,408 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-08 22:19:15,408 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2025-01-08 22:19:15,409 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=109, Unknown=0, NotChecked=0, Total=156 [2025-01-08 22:19:15,409 INFO L87 Difference]: Start difference. First operand 20 states and 22 transitions. Second operand has 13 states, 13 states have (on average 2.6923076923076925) internal successors, (35), 13 states have internal predecessors, (35), 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 22:19:15,489 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-08 22:19:15,489 INFO L93 Difference]: Finished difference Result 49 states and 55 transitions. [2025-01-08 22:19:15,489 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2025-01-08 22:19:15,489 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 2.6923076923076925) internal successors, (35), 13 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2025-01-08 22:19:15,489 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-08 22:19:15,490 INFO L225 Difference]: With dead ends: 49 [2025-01-08 22:19:15,490 INFO L226 Difference]: Without dead ends: 25 [2025-01-08 22:19:15,490 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 29 SyntacticMatches, 4 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 76 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=69, Invalid=171, Unknown=0, NotChecked=0, Total=240 [2025-01-08 22:19:15,490 INFO L435 NwaCegarLoop]: 7 mSDtfsCounter, 8 mSDsluCounter, 22 mSDsCounter, 0 mSdLazyCounter, 66 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 29 SdHoareTripleChecker+Invalid, 82 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 66 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-01-08 22:19:15,490 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 29 Invalid, 82 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 66 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-01-08 22:19:15,491 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25 states. [2025-01-08 22:19:15,494 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25 to 23. [2025-01-08 22:19:15,494 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23 states, 22 states have (on average 1.0909090909090908) internal successors, (24), 22 states have internal predecessors, (24), 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 22:19:15,495 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 24 transitions. [2025-01-08 22:19:15,495 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 24 transitions. Word has length 19 [2025-01-08 22:19:15,495 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-08 22:19:15,495 INFO L471 AbstractCegarLoop]: Abstraction has 23 states and 24 transitions. [2025-01-08 22:19:15,495 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 2.6923076923076925) internal successors, (35), 13 states have internal predecessors, (35), 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 22:19:15,495 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 24 transitions. [2025-01-08 22:19:15,495 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2025-01-08 22:19:15,495 INFO L210 NwaCegarLoop]: Found error trace [2025-01-08 22:19:15,496 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2025-01-08 22:19:15,501 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2025-01-08 22:19:15,696 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 22:19:15,697 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-01-08 22:19:15,697 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-08 22:19:15,697 INFO L85 PathProgramCache]: Analyzing trace with hash -1604789777, now seen corresponding path program 4 times [2025-01-08 22:19:15,697 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-08 22:19:15,697 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1431654010] [2025-01-08 22:19:15,697 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-01-08 22:19:15,697 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-08 22:19:15,706 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 22 statements into 2 equivalence classes. [2025-01-08 22:19:15,726 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) and asserted 22 of 22 statements. [2025-01-08 22:19:15,726 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) [2025-01-08 22:19:15,726 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-08 22:19:15,969 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 0 proven. 19 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-08 22:19:15,970 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-08 22:19:15,970 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1431654010] [2025-01-08 22:19:15,970 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1431654010] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-08 22:19:15,970 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [468321999] [2025-01-08 22:19:15,970 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-01-08 22:19:15,970 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-08 22:19:15,970 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-08 22:19:15,973 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 22:19:15,975 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 22:19:16,002 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 22 statements into 2 equivalence classes. [2025-01-08 22:19:16,016 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) and asserted 22 of 22 statements. [2025-01-08 22:19:16,017 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) [2025-01-08 22:19:16,017 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-08 22:19:16,017 INFO L256 TraceCheckSpWp]: Trace formula consists of 126 conjuncts, 24 conjuncts are in the unsatisfiable core [2025-01-08 22:19:16,019 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-08 22:19:16,116 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 1 [2025-01-08 22:19:16,313 INFO L349 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2025-01-08 22:19:16,313 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 23 treesize of output 10 [2025-01-08 22:19:16,331 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 4 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-08 22:19:16,332 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-01-08 22:19:16,507 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 18 [2025-01-08 22:19:16,510 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 20 [2025-01-08 22:19:16,654 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 3 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-08 22:19:16,655 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [468321999] provided 0 perfect and 2 imperfect interpolant sequences [2025-01-08 22:19:16,655 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-01-08 22:19:16,655 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 12, 12] total 29 [2025-01-08 22:19:16,655 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1269312087] [2025-01-08 22:19:16,655 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-01-08 22:19:16,655 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2025-01-08 22:19:16,655 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-08 22:19:16,656 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2025-01-08 22:19:16,656 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=114, Invalid=698, Unknown=0, NotChecked=0, Total=812 [2025-01-08 22:19:16,656 INFO L87 Difference]: Start difference. First operand 23 states and 24 transitions. Second operand has 29 states, 29 states have (on average 2.0344827586206895) internal successors, (59), 29 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 22:19:17,148 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-08 22:19:17,149 INFO L93 Difference]: Finished difference Result 45 states and 48 transitions. [2025-01-08 22:19:17,149 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2025-01-08 22:19:17,149 INFO L78 Accepts]: Start accepts. Automaton has has 29 states, 29 states have (on average 2.0344827586206895) internal successors, (59), 29 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 22 [2025-01-08 22:19:17,149 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-08 22:19:17,149 INFO L225 Difference]: With dead ends: 45 [2025-01-08 22:19:17,149 INFO L226 Difference]: Without dead ends: 31 [2025-01-08 22:19:17,150 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 250 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=243, Invalid=1317, Unknown=0, NotChecked=0, Total=1560 [2025-01-08 22:19:17,151 INFO L435 NwaCegarLoop]: 7 mSDtfsCounter, 31 mSDsluCounter, 51 mSDsCounter, 0 mSdLazyCounter, 394 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 31 SdHoareTripleChecker+Valid, 58 SdHoareTripleChecker+Invalid, 412 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 394 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2025-01-08 22:19:17,151 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [31 Valid, 58 Invalid, 412 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 394 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2025-01-08 22:19:17,151 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states. [2025-01-08 22:19:17,154 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 26. [2025-01-08 22:19:17,154 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 26 states, 25 states have (on average 1.08) internal successors, (27), 25 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 22:19:17,154 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 27 transitions. [2025-01-08 22:19:17,154 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 27 transitions. Word has length 22 [2025-01-08 22:19:17,154 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-08 22:19:17,154 INFO L471 AbstractCegarLoop]: Abstraction has 26 states and 27 transitions. [2025-01-08 22:19:17,154 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 29 states, 29 states have (on average 2.0344827586206895) internal successors, (59), 29 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 22:19:17,155 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 27 transitions. [2025-01-08 22:19:17,155 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2025-01-08 22:19:17,155 INFO L210 NwaCegarLoop]: Found error trace [2025-01-08 22:19:17,155 INFO L218 NwaCegarLoop]: trace histogram [4, 4, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2025-01-08 22:19:17,160 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 22:19:17,355 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 22:19:17,355 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-01-08 22:19:17,356 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-08 22:19:17,356 INFO L85 PathProgramCache]: Analyzing trace with hash -274920314, now seen corresponding path program 5 times [2025-01-08 22:19:17,356 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-08 22:19:17,356 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1599868317] [2025-01-08 22:19:17,356 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2025-01-08 22:19:17,356 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-08 22:19:17,367 INFO L108 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 partitioned 25 statements into 5 equivalence classes. [2025-01-08 22:19:17,383 INFO L111 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 5 check-sat command(s) and asserted 25 of 25 statements. [2025-01-08 22:19:17,383 INFO L114 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 5 check-sat command(s) [2025-01-08 22:19:17,383 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-08 22:19:17,602 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 0 proven. 29 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-08 22:19:17,602 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-08 22:19:17,602 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1599868317] [2025-01-08 22:19:17,602 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1599868317] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-08 22:19:17,602 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [372527890] [2025-01-08 22:19:17,602 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2025-01-08 22:19:17,602 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-08 22:19:17,602 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-08 22:19:17,606 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 22:19:17,614 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 22:19:17,639 INFO L108 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 partitioned 25 statements into 5 equivalence classes. [2025-01-08 22:19:17,662 INFO L111 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 5 check-sat command(s) and asserted 25 of 25 statements. [2025-01-08 22:19:17,662 INFO L114 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 5 check-sat command(s) [2025-01-08 22:19:17,662 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-08 22:19:17,663 INFO L256 TraceCheckSpWp]: Trace formula consists of 138 conjuncts, 25 conjuncts are in the unsatisfiable core [2025-01-08 22:19:17,664 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-08 22:19:17,748 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2025-01-08 22:19:17,807 INFO L190 IndexEqualityManager]: detected not equals via solver [2025-01-08 22:19:17,808 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 20 [2025-01-08 22:19:18,008 INFO L190 IndexEqualityManager]: detected not equals via solver [2025-01-08 22:19:18,010 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-01-08 22:19:18,010 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 30 treesize of output 10 [2025-01-08 22:19:18,033 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 0 proven. 29 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-08 22:19:18,033 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-01-08 22:19:18,166 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 23 [2025-01-08 22:19:18,168 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 54 treesize of output 50 [2025-01-08 22:19:18,253 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 0 proven. 29 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-08 22:19:18,253 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [372527890] provided 0 perfect and 2 imperfect interpolant sequences [2025-01-08 22:19:18,253 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-01-08 22:19:18,253 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 28 [2025-01-08 22:19:18,253 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [343453461] [2025-01-08 22:19:18,253 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-01-08 22:19:18,254 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2025-01-08 22:19:18,254 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-08 22:19:18,254 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2025-01-08 22:19:18,254 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=83, Invalid=673, Unknown=0, NotChecked=0, Total=756 [2025-01-08 22:19:18,254 INFO L87 Difference]: Start difference. First operand 26 states and 27 transitions. Second operand has 28 states, 28 states have (on average 2.4285714285714284) internal successors, (68), 28 states have internal predecessors, (68), 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 22:19:18,634 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-08 22:19:18,634 INFO L93 Difference]: Finished difference Result 36 states and 38 transitions. [2025-01-08 22:19:18,634 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2025-01-08 22:19:18,634 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 28 states have (on average 2.4285714285714284) internal successors, (68), 28 states have internal predecessors, (68), 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 25 [2025-01-08 22:19:18,635 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-08 22:19:18,635 INFO L225 Difference]: With dead ends: 36 [2025-01-08 22:19:18,635 INFO L226 Difference]: Without dead ends: 34 [2025-01-08 22:19:18,635 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 68 GetRequests, 32 SyntacticMatches, 1 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 144 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=175, Invalid=1157, Unknown=0, NotChecked=0, Total=1332 [2025-01-08 22:19:18,636 INFO L435 NwaCegarLoop]: 8 mSDtfsCounter, 59 mSDsluCounter, 88 mSDsCounter, 0 mSdLazyCounter, 461 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 59 SdHoareTripleChecker+Valid, 96 SdHoareTripleChecker+Invalid, 479 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 461 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2025-01-08 22:19:18,636 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [59 Valid, 96 Invalid, 479 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 461 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2025-01-08 22:19:18,637 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34 states. [2025-01-08 22:19:18,639 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34 to 29. [2025-01-08 22:19:18,640 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 29 states, 28 states have (on average 1.0714285714285714) internal successors, (30), 28 states have internal predecessors, (30), 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 22:19:18,640 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 30 transitions. [2025-01-08 22:19:18,640 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 30 transitions. Word has length 25 [2025-01-08 22:19:18,640 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-08 22:19:18,640 INFO L471 AbstractCegarLoop]: Abstraction has 29 states and 30 transitions. [2025-01-08 22:19:18,640 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 28 states have (on average 2.4285714285714284) internal successors, (68), 28 states have internal predecessors, (68), 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 22:19:18,640 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 30 transitions. [2025-01-08 22:19:18,640 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2025-01-08 22:19:18,640 INFO L210 NwaCegarLoop]: Found error trace [2025-01-08 22:19:18,640 INFO L218 NwaCegarLoop]: trace histogram [4, 4, 4, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1] [2025-01-08 22:19:18,646 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 22:19:18,841 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 22:19:18,841 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-01-08 22:19:18,842 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-08 22:19:18,842 INFO L85 PathProgramCache]: Analyzing trace with hash 356347602, now seen corresponding path program 6 times [2025-01-08 22:19:18,842 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-08 22:19:18,842 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1948874655] [2025-01-08 22:19:18,842 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2025-01-08 22:19:18,842 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-08 22:19:18,848 INFO L108 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE partitioned 28 statements into 5 equivalence classes. [2025-01-08 22:19:18,861 INFO L111 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 5 check-sat command(s) and asserted 28 of 28 statements. [2025-01-08 22:19:18,866 INFO L114 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 5 check-sat command(s) [2025-01-08 22:19:18,866 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-08 22:19:19,145 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 0 proven. 37 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-08 22:19:19,145 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-08 22:19:19,145 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1948874655] [2025-01-08 22:19:19,145 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1948874655] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-08 22:19:19,145 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1245590013] [2025-01-08 22:19:19,145 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2025-01-08 22:19:19,145 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-08 22:19:19,145 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-08 22:19:19,151 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 22:19:19,152 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 22:19:19,183 INFO L108 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE partitioned 28 statements into 5 equivalence classes. [2025-01-08 22:19:19,201 INFO L111 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 5 check-sat command(s) and asserted 28 of 28 statements. [2025-01-08 22:19:19,201 INFO L114 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 5 check-sat command(s) [2025-01-08 22:19:19,201 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-08 22:19:19,202 INFO L256 TraceCheckSpWp]: Trace formula consists of 148 conjuncts, 21 conjuncts are in the unsatisfiable core [2025-01-08 22:19:19,203 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-08 22:19:19,303 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 1 [2025-01-08 22:19:19,500 INFO L349 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2025-01-08 22:19:19,500 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 23 treesize of output 10 [2025-01-08 22:19:19,518 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 12 proven. 25 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-08 22:19:19,518 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-01-08 22:19:19,692 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 18 [2025-01-08 22:19:19,694 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 20 [2025-01-08 22:19:19,867 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 9 proven. 28 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-08 22:19:19,867 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1245590013] provided 0 perfect and 2 imperfect interpolant sequences [2025-01-08 22:19:19,867 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-01-08 22:19:19,867 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 13, 13] total 35 [2025-01-08 22:19:19,867 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1893190906] [2025-01-08 22:19:19,867 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-01-08 22:19:19,868 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 35 states [2025-01-08 22:19:19,868 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-08 22:19:19,868 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2025-01-08 22:19:19,868 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=162, Invalid=1028, Unknown=0, NotChecked=0, Total=1190 [2025-01-08 22:19:19,869 INFO L87 Difference]: Start difference. First operand 29 states and 30 transitions. Second operand has 35 states, 35 states have (on average 2.2) internal successors, (77), 35 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 22:19:20,302 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-08 22:19:20,302 INFO L93 Difference]: Finished difference Result 54 states and 57 transitions. [2025-01-08 22:19:20,302 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2025-01-08 22:19:20,302 INFO L78 Accepts]: Start accepts. Automaton has has 35 states, 35 states have (on average 2.2) internal successors, (77), 35 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) Word has length 28 [2025-01-08 22:19:20,302 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-08 22:19:20,303 INFO L225 Difference]: With dead ends: 54 [2025-01-08 22:19:20,303 INFO L226 Difference]: Without dead ends: 37 [2025-01-08 22:19:20,303 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 79 GetRequests, 35 SyntacticMatches, 0 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 461 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=288, Invalid=1782, Unknown=0, NotChecked=0, Total=2070 [2025-01-08 22:19:20,303 INFO L435 NwaCegarLoop]: 10 mSDtfsCounter, 23 mSDsluCounter, 83 mSDsCounter, 0 mSdLazyCounter, 457 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 23 SdHoareTripleChecker+Valid, 93 SdHoareTripleChecker+Invalid, 472 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 457 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2025-01-08 22:19:20,304 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [23 Valid, 93 Invalid, 472 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 457 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2025-01-08 22:19:20,304 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37 states. [2025-01-08 22:19:20,307 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 32. [2025-01-08 22:19:20,307 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 32 states, 31 states have (on average 1.064516129032258) internal successors, (33), 31 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-08 22:19:20,308 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 33 transitions. [2025-01-08 22:19:20,308 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 33 transitions. Word has length 28 [2025-01-08 22:19:20,308 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-08 22:19:20,308 INFO L471 AbstractCegarLoop]: Abstraction has 32 states and 33 transitions. [2025-01-08 22:19:20,308 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 35 states, 35 states have (on average 2.2) internal successors, (77), 35 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 22:19:20,308 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 33 transitions. [2025-01-08 22:19:20,308 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2025-01-08 22:19:20,308 INFO L210 NwaCegarLoop]: Found error trace [2025-01-08 22:19:20,309 INFO L218 NwaCegarLoop]: trace histogram [5, 5, 4, 4, 3, 3, 1, 1, 1, 1, 1, 1, 1] [2025-01-08 22:19:20,314 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2025-01-08 22:19:20,512 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 22:19:20,513 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-01-08 22:19:20,513 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-08 22:19:20,513 INFO L85 PathProgramCache]: Analyzing trace with hash 216077353, now seen corresponding path program 7 times [2025-01-08 22:19:20,513 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-08 22:19:20,513 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1854630229] [2025-01-08 22:19:20,513 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2025-01-08 22:19:20,514 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-08 22:19:20,519 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 31 statements into 1 equivalence classes. [2025-01-08 22:19:20,525 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 31 of 31 statements. [2025-01-08 22:19:20,525 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-08 22:19:20,525 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-08 22:19:20,809 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 0 proven. 50 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-08 22:19:20,809 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-08 22:19:20,810 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1854630229] [2025-01-08 22:19:20,810 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1854630229] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-08 22:19:20,810 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [648139962] [2025-01-08 22:19:20,810 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2025-01-08 22:19:20,810 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-08 22:19:20,810 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-08 22:19:20,815 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 22:19:20,817 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 22:19:20,851 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 31 statements into 1 equivalence classes. [2025-01-08 22:19:20,864 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 31 of 31 statements. [2025-01-08 22:19:20,864 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-08 22:19:20,864 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-08 22:19:20,865 INFO L256 TraceCheckSpWp]: Trace formula consists of 160 conjuncts, 29 conjuncts are in the unsatisfiable core [2025-01-08 22:19:20,866 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-08 22:19:20,964 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2025-01-08 22:19:21,001 INFO L190 IndexEqualityManager]: detected not equals via solver [2025-01-08 22:19:21,001 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 20 [2025-01-08 22:19:21,226 INFO L190 IndexEqualityManager]: detected not equals via solver [2025-01-08 22:19:21,227 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-01-08 22:19:21,227 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 30 treesize of output 10 [2025-01-08 22:19:21,246 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 0 proven. 50 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-08 22:19:21,246 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-01-08 22:19:21,385 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 23 [2025-01-08 22:19:21,387 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 54 treesize of output 50 [2025-01-08 22:19:21,493 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 0 proven. 50 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-08 22:19:21,493 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [648139962] provided 0 perfect and 2 imperfect interpolant sequences [2025-01-08 22:19:21,493 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-01-08 22:19:21,493 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13, 13] total 34 [2025-01-08 22:19:21,493 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1028919233] [2025-01-08 22:19:21,494 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-01-08 22:19:21,494 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2025-01-08 22:19:21,494 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-08 22:19:21,497 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2025-01-08 22:19:21,498 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=118, Invalid=1004, Unknown=0, NotChecked=0, Total=1122 [2025-01-08 22:19:21,498 INFO L87 Difference]: Start difference. First operand 32 states and 33 transitions. Second operand has 34 states, 34 states have (on average 2.5294117647058822) internal successors, (86), 34 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-08 22:19:22,428 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-08 22:19:22,428 INFO L93 Difference]: Finished difference Result 42 states and 44 transitions. [2025-01-08 22:19:22,429 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2025-01-08 22:19:22,429 INFO L78 Accepts]: Start accepts. Automaton has has 34 states, 34 states have (on average 2.5294117647058822) internal successors, (86), 34 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 31 [2025-01-08 22:19:22,429 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-08 22:19:22,429 INFO L225 Difference]: With dead ends: 42 [2025-01-08 22:19:22,429 INFO L226 Difference]: Without dead ends: 40 [2025-01-08 22:19:22,430 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 80 GetRequests, 40 SyntacticMatches, 1 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 309 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=202, Invalid=1438, Unknown=0, NotChecked=0, Total=1640 [2025-01-08 22:19:22,431 INFO L435 NwaCegarLoop]: 9 mSDtfsCounter, 47 mSDsluCounter, 114 mSDsCounter, 0 mSdLazyCounter, 631 mSolverCounterSat, 15 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 47 SdHoareTripleChecker+Valid, 123 SdHoareTripleChecker+Invalid, 647 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 631 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2025-01-08 22:19:22,431 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [47 Valid, 123 Invalid, 647 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 631 Invalid, 1 Unknown, 0 Unchecked, 0.7s Time] [2025-01-08 22:19:22,432 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40 states. [2025-01-08 22:19:22,439 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40 to 35. [2025-01-08 22:19:22,439 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 35 states, 34 states have (on average 1.0588235294117647) internal successors, (36), 34 states have internal predecessors, (36), 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 22:19:22,439 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 36 transitions. [2025-01-08 22:19:22,439 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 36 transitions. Word has length 31 [2025-01-08 22:19:22,439 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-08 22:19:22,439 INFO L471 AbstractCegarLoop]: Abstraction has 35 states and 36 transitions. [2025-01-08 22:19:22,439 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 34 states have (on average 2.5294117647058822) internal successors, (86), 34 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-08 22:19:22,439 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 36 transitions. [2025-01-08 22:19:22,440 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2025-01-08 22:19:22,440 INFO L210 NwaCegarLoop]: Found error trace [2025-01-08 22:19:22,440 INFO L218 NwaCegarLoop]: trace histogram [5, 5, 5, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1] [2025-01-08 22:19:22,450 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 22:19:22,645 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 22:19:22,645 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-01-08 22:19:22,645 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-08 22:19:22,645 INFO L85 PathProgramCache]: Analyzing trace with hash -990764977, now seen corresponding path program 8 times [2025-01-08 22:19:22,645 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-08 22:19:22,645 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [560582709] [2025-01-08 22:19:22,645 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-01-08 22:19:22,645 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-08 22:19:22,656 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 34 statements into 2 equivalence classes. [2025-01-08 22:19:22,661 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 34 of 34 statements. [2025-01-08 22:19:22,661 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-01-08 22:19:22,661 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-08 22:19:23,079 INFO L134 CoverageAnalysis]: Checked inductivity of 61 backedges. 9 proven. 52 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-08 22:19:23,080 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-08 22:19:23,080 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [560582709] [2025-01-08 22:19:23,080 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [560582709] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-08 22:19:23,080 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1833979961] [2025-01-08 22:19:23,080 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-01-08 22:19:23,080 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-08 22:19:23,080 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-08 22:19:23,082 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 22:19:23,083 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 22:19:23,122 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 34 statements into 2 equivalence classes. [2025-01-08 22:19:23,138 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 34 of 34 statements. [2025-01-08 22:19:23,138 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-01-08 22:19:23,138 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-08 22:19:23,139 INFO L256 TraceCheckSpWp]: Trace formula consists of 170 conjuncts, 30 conjuncts are in the unsatisfiable core [2025-01-08 22:19:23,141 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-08 22:19:23,274 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2025-01-08 22:19:23,464 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 22:19:23,494 INFO L134 CoverageAnalysis]: Checked inductivity of 61 backedges. 0 proven. 61 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-08 22:19:23,494 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-01-08 22:19:23,645 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 16 [2025-01-08 22:19:23,647 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 20 [2025-01-08 22:19:23,803 INFO L134 CoverageAnalysis]: Checked inductivity of 61 backedges. 0 proven. 61 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-08 22:19:23,806 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1833979961] provided 0 perfect and 2 imperfect interpolant sequences [2025-01-08 22:19:23,807 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-01-08 22:19:23,807 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 14, 14] total 38 [2025-01-08 22:19:23,807 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1354057063] [2025-01-08 22:19:23,807 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-01-08 22:19:23,807 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 38 states [2025-01-08 22:19:23,807 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-08 22:19:23,807 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2025-01-08 22:19:23,808 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=114, Invalid=1292, Unknown=0, NotChecked=0, Total=1406 [2025-01-08 22:19:23,808 INFO L87 Difference]: Start difference. First operand 35 states and 36 transitions. Second operand has 38 states, 38 states have (on average 2.5) internal successors, (95), 38 states have internal predecessors, (95), 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 22:19:24,497 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-08 22:19:24,497 INFO L93 Difference]: Finished difference Result 64 states and 68 transitions. [2025-01-08 22:19:24,497 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2025-01-08 22:19:24,497 INFO L78 Accepts]: Start accepts. Automaton has has 38 states, 38 states have (on average 2.5) internal successors, (95), 38 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 34 [2025-01-08 22:19:24,499 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-08 22:19:24,499 INFO L225 Difference]: With dead ends: 64 [2025-01-08 22:19:24,499 INFO L226 Difference]: Without dead ends: 42 [2025-01-08 22:19:24,500 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 96 GetRequests, 44 SyntacticMatches, 1 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 619 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=258, Invalid=2498, Unknown=0, NotChecked=0, Total=2756 [2025-01-08 22:19:24,502 INFO L435 NwaCegarLoop]: 11 mSDtfsCounter, 35 mSDsluCounter, 154 mSDsCounter, 0 mSdLazyCounter, 756 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 35 SdHoareTripleChecker+Valid, 165 SdHoareTripleChecker+Invalid, 760 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 756 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2025-01-08 22:19:24,502 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [35 Valid, 165 Invalid, 760 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 756 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2025-01-08 22:19:24,502 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states. [2025-01-08 22:19:24,520 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 38. [2025-01-08 22:19:24,520 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 38 states, 37 states have (on average 1.054054054054054) internal successors, (39), 37 states have internal predecessors, (39), 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 22:19:24,521 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 39 transitions. [2025-01-08 22:19:24,521 INFO L78 Accepts]: Start accepts. Automaton has 38 states and 39 transitions. Word has length 34 [2025-01-08 22:19:24,521 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-08 22:19:24,521 INFO L471 AbstractCegarLoop]: Abstraction has 38 states and 39 transitions. [2025-01-08 22:19:24,521 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 38 states, 38 states have (on average 2.5) internal successors, (95), 38 states have internal predecessors, (95), 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 22:19:24,521 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 39 transitions. [2025-01-08 22:19:24,522 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2025-01-08 22:19:24,522 INFO L210 NwaCegarLoop]: Found error trace [2025-01-08 22:19:24,522 INFO L218 NwaCegarLoop]: trace histogram [6, 6, 5, 5, 4, 4, 1, 1, 1, 1, 1, 1, 1] [2025-01-08 22:19:24,527 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 22:19:24,726 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 22:19:24,726 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-01-08 22:19:24,726 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-08 22:19:24,726 INFO L85 PathProgramCache]: Analyzing trace with hash -1799083930, now seen corresponding path program 9 times [2025-01-08 22:19:24,726 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-08 22:19:24,726 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2098700913] [2025-01-08 22:19:24,726 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-01-08 22:19:24,726 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-08 22:19:24,736 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 37 statements into 7 equivalence classes. [2025-01-08 22:19:24,758 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 7 check-sat command(s) and asserted 37 of 37 statements. [2025-01-08 22:19:24,758 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 7 check-sat command(s) [2025-01-08 22:19:24,758 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-08 22:19:25,057 INFO L134 CoverageAnalysis]: Checked inductivity of 77 backedges. 0 proven. 77 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-08 22:19:25,058 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-08 22:19:25,058 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2098700913] [2025-01-08 22:19:25,058 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2098700913] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-08 22:19:25,058 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [658906347] [2025-01-08 22:19:25,058 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-01-08 22:19:25,058 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-08 22:19:25,058 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-08 22:19:25,060 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 22:19:25,061 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 22:19:25,101 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 37 statements into 7 equivalence classes. [2025-01-08 22:19:25,142 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 7 check-sat command(s) and asserted 37 of 37 statements. [2025-01-08 22:19:25,142 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 7 check-sat command(s) [2025-01-08 22:19:25,143 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-08 22:19:25,144 INFO L256 TraceCheckSpWp]: Trace formula consists of 182 conjuncts, 34 conjuncts are in the unsatisfiable core [2025-01-08 22:19:25,145 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-08 22:19:25,268 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2025-01-08 22:19:25,307 INFO L349 Elim1Store]: treesize reduction 19, result has 32.1 percent of original size [2025-01-08 22:19:25,307 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 31 treesize of output 24 [2025-01-08 22:19:25,569 INFO L349 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2025-01-08 22:19:25,569 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 38 treesize of output 10 [2025-01-08 22:19:25,590 INFO L134 CoverageAnalysis]: Checked inductivity of 77 backedges. 0 proven. 77 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-08 22:19:25,590 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-01-08 22:19:25,761 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 23 [2025-01-08 22:19:25,763 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 54 treesize of output 50 [2025-01-08 22:19:25,911 INFO L134 CoverageAnalysis]: Checked inductivity of 77 backedges. 0 proven. 77 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-08 22:19:25,912 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [658906347] provided 0 perfect and 2 imperfect interpolant sequences [2025-01-08 22:19:25,912 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-01-08 22:19:25,912 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15, 15] total 40 [2025-01-08 22:19:25,912 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [553437760] [2025-01-08 22:19:25,912 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-01-08 22:19:25,912 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 40 states [2025-01-08 22:19:25,912 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-08 22:19:25,913 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 40 interpolants. [2025-01-08 22:19:25,913 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=130, Invalid=1430, Unknown=0, NotChecked=0, Total=1560 [2025-01-08 22:19:25,913 INFO L87 Difference]: Start difference. First operand 38 states and 39 transitions. Second operand has 40 states, 40 states have (on average 2.6) internal successors, (104), 40 states have internal predecessors, (104), 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 22:19:26,566 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-08 22:19:26,566 INFO L93 Difference]: Finished difference Result 48 states and 50 transitions. [2025-01-08 22:19:26,567 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2025-01-08 22:19:26,567 INFO L78 Accepts]: Start accepts. Automaton has has 40 states, 40 states have (on average 2.6) internal successors, (104), 40 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 37 [2025-01-08 22:19:26,567 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-08 22:19:26,567 INFO L225 Difference]: With dead ends: 48 [2025-01-08 22:19:26,567 INFO L226 Difference]: Without dead ends: 46 [2025-01-08 22:19:26,568 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 95 GetRequests, 49 SyntacticMatches, 0 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 352 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=221, Invalid=2035, Unknown=0, NotChecked=0, Total=2256 [2025-01-08 22:19:26,568 INFO L435 NwaCegarLoop]: 10 mSDtfsCounter, 58 mSDsluCounter, 152 mSDsCounter, 0 mSdLazyCounter, 843 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 58 SdHoareTripleChecker+Valid, 162 SdHoareTripleChecker+Invalid, 862 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 843 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2025-01-08 22:19:26,569 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [58 Valid, 162 Invalid, 862 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 843 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2025-01-08 22:19:26,569 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46 states. [2025-01-08 22:19:26,576 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46 to 41. [2025-01-08 22:19:26,576 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 41 states, 40 states have (on average 1.05) internal successors, (42), 40 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 22:19:26,576 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 42 transitions. [2025-01-08 22:19:26,576 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 42 transitions. Word has length 37 [2025-01-08 22:19:26,576 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-08 22:19:26,576 INFO L471 AbstractCegarLoop]: Abstraction has 41 states and 42 transitions. [2025-01-08 22:19:26,576 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 40 states, 40 states have (on average 2.6) internal successors, (104), 40 states have internal predecessors, (104), 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 22:19:26,576 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 42 transitions. [2025-01-08 22:19:26,577 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2025-01-08 22:19:26,577 INFO L210 NwaCegarLoop]: Found error trace [2025-01-08 22:19:26,577 INFO L218 NwaCegarLoop]: trace histogram [6, 6, 6, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1] [2025-01-08 22:19:26,583 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2025-01-08 22:19:26,781 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 22:19:26,781 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-01-08 22:19:26,782 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-08 22:19:26,782 INFO L85 PathProgramCache]: Analyzing trace with hash 392316658, now seen corresponding path program 10 times [2025-01-08 22:19:26,782 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-08 22:19:26,782 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1585693885] [2025-01-08 22:19:26,782 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-01-08 22:19:26,782 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-08 22:19:26,790 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 40 statements into 2 equivalence classes. [2025-01-08 22:19:26,800 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) and asserted 40 of 40 statements. [2025-01-08 22:19:26,800 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) [2025-01-08 22:19:26,800 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-08 22:19:27,100 INFO L134 CoverageAnalysis]: Checked inductivity of 91 backedges. 0 proven. 91 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-08 22:19:27,100 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-08 22:19:27,101 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1585693885] [2025-01-08 22:19:27,101 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1585693885] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-08 22:19:27,101 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1149822594] [2025-01-08 22:19:27,101 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-01-08 22:19:27,101 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-08 22:19:27,101 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-08 22:19:27,103 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 22:19:27,104 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 22:19:27,145 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 40 statements into 2 equivalence classes. [2025-01-08 22:19:27,202 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) and asserted 40 of 40 statements. [2025-01-08 22:19:27,202 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) [2025-01-08 22:19:27,202 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-08 22:19:27,203 INFO L256 TraceCheckSpWp]: Trace formula consists of 192 conjuncts, 34 conjuncts are in the unsatisfiable core [2025-01-08 22:19:27,220 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-08 22:19:27,407 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2025-01-08 22:19:27,649 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 22:19:27,673 INFO L134 CoverageAnalysis]: Checked inductivity of 91 backedges. 0 proven. 91 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-08 22:19:27,673 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-01-08 22:19:27,885 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 16 [2025-01-08 22:19:27,886 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 20 [2025-01-08 22:19:28,075 INFO L134 CoverageAnalysis]: Checked inductivity of 91 backedges. 0 proven. 91 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-08 22:19:28,075 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1149822594] provided 0 perfect and 2 imperfect interpolant sequences [2025-01-08 22:19:28,075 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-01-08 22:19:28,075 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16, 16] total 43 [2025-01-08 22:19:28,076 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [765247022] [2025-01-08 22:19:28,076 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-01-08 22:19:28,076 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 43 states [2025-01-08 22:19:28,076 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-08 22:19:28,077 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 43 interpolants. [2025-01-08 22:19:28,077 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=122, Invalid=1684, Unknown=0, NotChecked=0, Total=1806 [2025-01-08 22:19:28,078 INFO L87 Difference]: Start difference. First operand 41 states and 42 transitions. Second operand has 43 states, 43 states have (on average 2.627906976744186) internal successors, (113), 43 states have internal predecessors, (113), 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 22:19:28,700 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-08 22:19:28,700 INFO L93 Difference]: Finished difference Result 75 states and 78 transitions. [2025-01-08 22:19:28,700 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2025-01-08 22:19:28,700 INFO L78 Accepts]: Start accepts. Automaton has has 43 states, 43 states have (on average 2.627906976744186) internal successors, (113), 43 states have internal predecessors, (113), 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 40 [2025-01-08 22:19:28,701 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-08 22:19:28,701 INFO L225 Difference]: With dead ends: 75 [2025-01-08 22:19:28,701 INFO L226 Difference]: Without dead ends: 73 [2025-01-08 22:19:28,703 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 108 GetRequests, 52 SyntacticMatches, 1 SemanticMatches, 55 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 319 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=223, Invalid=2969, Unknown=0, NotChecked=0, Total=3192 [2025-01-08 22:19:28,703 INFO L435 NwaCegarLoop]: 15 mSDtfsCounter, 49 mSDsluCounter, 244 mSDsCounter, 0 mSdLazyCounter, 950 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 49 SdHoareTripleChecker+Valid, 259 SdHoareTripleChecker+Invalid, 950 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 950 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2025-01-08 22:19:28,703 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [49 Valid, 259 Invalid, 950 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 950 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2025-01-08 22:19:28,704 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 73 states. [2025-01-08 22:19:28,711 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 73 to 49. [2025-01-08 22:19:28,711 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 49 states, 48 states have (on average 1.0625) internal successors, (51), 48 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-08 22:19:28,712 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49 states to 49 states and 51 transitions. [2025-01-08 22:19:28,712 INFO L78 Accepts]: Start accepts. Automaton has 49 states and 51 transitions. Word has length 40 [2025-01-08 22:19:28,712 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-08 22:19:28,712 INFO L471 AbstractCegarLoop]: Abstraction has 49 states and 51 transitions. [2025-01-08 22:19:28,712 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 43 states, 43 states have (on average 2.627906976744186) internal successors, (113), 43 states have internal predecessors, (113), 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 22:19:28,712 INFO L276 IsEmpty]: Start isEmpty. Operand 49 states and 51 transitions. [2025-01-08 22:19:28,714 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2025-01-08 22:19:28,714 INFO L210 NwaCegarLoop]: Found error trace [2025-01-08 22:19:28,714 INFO L218 NwaCegarLoop]: trace histogram [7, 7, 6, 6, 5, 5, 1, 1, 1, 1, 1, 1, 1] [2025-01-08 22:19:28,721 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2025-01-08 22:19:28,915 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 22:19:28,915 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-01-08 22:19:28,916 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-08 22:19:28,916 INFO L85 PathProgramCache]: Analyzing trace with hash 876454345, now seen corresponding path program 11 times [2025-01-08 22:19:28,916 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-08 22:19:28,916 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [834670384] [2025-01-08 22:19:28,916 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2025-01-08 22:19:28,916 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-08 22:19:28,924 INFO L108 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 partitioned 43 statements into 8 equivalence classes. [2025-01-08 22:19:28,944 INFO L111 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 8 check-sat command(s) and asserted 43 of 43 statements. [2025-01-08 22:19:28,944 INFO L114 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 8 check-sat command(s) [2025-01-08 22:19:28,944 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-08 22:19:29,385 INFO L134 CoverageAnalysis]: Checked inductivity of 110 backedges. 0 proven. 110 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-08 22:19:29,385 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-08 22:19:29,385 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [834670384] [2025-01-08 22:19:29,385 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [834670384] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-08 22:19:29,385 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1389324041] [2025-01-08 22:19:29,385 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2025-01-08 22:19:29,385 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-08 22:19:29,385 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-08 22:19:29,392 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 22:19:29,398 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 22:19:29,449 INFO L108 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 partitioned 43 statements into 8 equivalence classes. [2025-01-08 22:19:29,527 INFO L111 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 8 check-sat command(s) and asserted 43 of 43 statements. [2025-01-08 22:19:29,527 INFO L114 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 8 check-sat command(s) [2025-01-08 22:19:29,527 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-08 22:19:29,529 INFO L256 TraceCheckSpWp]: Trace formula consists of 204 conjuncts, 38 conjuncts are in the unsatisfiable core [2025-01-08 22:19:29,530 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-08 22:19:29,733 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2025-01-08 22:19:29,778 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 18 [2025-01-08 22:19:30,082 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-01-08 22:19:30,083 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 26 treesize of output 10 [2025-01-08 22:19:30,113 INFO L134 CoverageAnalysis]: Checked inductivity of 110 backedges. 0 proven. 110 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-08 22:19:30,113 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-01-08 22:19:30,382 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 26 treesize of output 24 [2025-01-08 22:19:30,384 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 54 treesize of output 50 [2025-01-08 22:19:30,696 INFO L134 CoverageAnalysis]: Checked inductivity of 110 backedges. 0 proven. 110 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-08 22:19:30,696 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1389324041] provided 0 perfect and 2 imperfect interpolant sequences [2025-01-08 22:19:30,696 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-01-08 22:19:30,696 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17, 17] total 46 [2025-01-08 22:19:30,697 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [221367771] [2025-01-08 22:19:30,697 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-01-08 22:19:30,697 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 46 states [2025-01-08 22:19:30,697 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-08 22:19:30,697 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 46 interpolants. [2025-01-08 22:19:30,698 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=154, Invalid=1916, Unknown=0, NotChecked=0, Total=2070 [2025-01-08 22:19:30,698 INFO L87 Difference]: Start difference. First operand 49 states and 51 transitions. Second operand has 46 states, 46 states have (on average 2.652173913043478) internal successors, (122), 46 states have internal predecessors, (122), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-08 22:19:32,208 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-08 22:19:32,208 INFO L93 Difference]: Finished difference Result 135 states and 141 transitions. [2025-01-08 22:19:32,209 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2025-01-08 22:19:32,209 INFO L78 Accepts]: Start accepts. Automaton has has 46 states, 46 states have (on average 2.652173913043478) internal successors, (122), 46 states have internal predecessors, (122), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 43 [2025-01-08 22:19:32,209 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-08 22:19:32,210 INFO L225 Difference]: With dead ends: 135 [2025-01-08 22:19:32,210 INFO L226 Difference]: Without dead ends: 133 [2025-01-08 22:19:32,211 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 134 GetRequests, 56 SyntacticMatches, 1 SemanticMatches, 77 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 922 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=516, Invalid=5646, Unknown=0, NotChecked=0, Total=6162 [2025-01-08 22:19:32,211 INFO L435 NwaCegarLoop]: 18 mSDtfsCounter, 196 mSDsluCounter, 454 mSDsCounter, 0 mSdLazyCounter, 1886 mSolverCounterSat, 32 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 196 SdHoareTripleChecker+Valid, 472 SdHoareTripleChecker+Invalid, 1918 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 32 IncrementalHoareTripleChecker+Valid, 1886 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2025-01-08 22:19:32,211 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [196 Valid, 472 Invalid, 1918 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [32 Valid, 1886 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2025-01-08 22:19:32,212 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 133 states. [2025-01-08 22:19:32,220 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 133 to 60. [2025-01-08 22:19:32,221 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 60 states, 59 states have (on average 1.0847457627118644) internal successors, (64), 59 states have internal predecessors, (64), 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 22:19:32,221 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60 states to 60 states and 64 transitions. [2025-01-08 22:19:32,221 INFO L78 Accepts]: Start accepts. Automaton has 60 states and 64 transitions. Word has length 43 [2025-01-08 22:19:32,221 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-08 22:19:32,221 INFO L471 AbstractCegarLoop]: Abstraction has 60 states and 64 transitions. [2025-01-08 22:19:32,221 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 46 states, 46 states have (on average 2.652173913043478) internal successors, (122), 46 states have internal predecessors, (122), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-08 22:19:32,221 INFO L276 IsEmpty]: Start isEmpty. Operand 60 states and 64 transitions. [2025-01-08 22:19:32,222 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2025-01-08 22:19:32,222 INFO L210 NwaCegarLoop]: Found error trace [2025-01-08 22:19:32,222 INFO L218 NwaCegarLoop]: trace histogram [7, 6, 6, 6, 6, 5, 1, 1, 1, 1, 1, 1, 1] [2025-01-08 22:19:32,229 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Ended with exit code 0 [2025-01-08 22:19:32,426 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 22:19:32,426 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-01-08 22:19:32,426 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-08 22:19:32,427 INFO L85 PathProgramCache]: Analyzing trace with hash 904334566, now seen corresponding path program 12 times [2025-01-08 22:19:32,427 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-08 22:19:32,427 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [252341597] [2025-01-08 22:19:32,427 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2025-01-08 22:19:32,427 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-08 22:19:32,432 INFO L108 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE partitioned 43 statements into 7 equivalence classes. [2025-01-08 22:19:32,451 INFO L111 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 7 check-sat command(s) and asserted 43 of 43 statements. [2025-01-08 22:19:32,453 INFO L114 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 7 check-sat command(s) [2025-01-08 22:19:32,453 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-08 22:19:32,581 INFO L134 CoverageAnalysis]: Checked inductivity of 108 backedges. 41 proven. 67 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-08 22:19:32,582 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-08 22:19:32,582 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [252341597] [2025-01-08 22:19:32,582 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [252341597] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-08 22:19:32,582 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1369401743] [2025-01-08 22:19:32,582 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2025-01-08 22:19:32,582 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-08 22:19:32,582 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-08 22:19:32,584 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-01-08 22:19:32,585 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2025-01-08 22:19:32,633 INFO L108 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE partitioned 43 statements into 7 equivalence classes. [2025-01-08 22:19:32,693 INFO L111 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 7 check-sat command(s) and asserted 43 of 43 statements. [2025-01-08 22:19:32,693 INFO L114 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 7 check-sat command(s) [2025-01-08 22:19:32,693 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-08 22:19:32,694 INFO L256 TraceCheckSpWp]: Trace formula consists of 202 conjuncts, 15 conjuncts are in the unsatisfiable core [2025-01-08 22:19:32,695 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-08 22:19:32,822 INFO L134 CoverageAnalysis]: Checked inductivity of 108 backedges. 57 proven. 51 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-08 22:19:32,823 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-01-08 22:19:32,917 INFO L134 CoverageAnalysis]: Checked inductivity of 108 backedges. 57 proven. 51 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-08 22:19:32,917 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1369401743] provided 0 perfect and 2 imperfect interpolant sequences [2025-01-08 22:19:32,917 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-01-08 22:19:32,917 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16, 16] total 25 [2025-01-08 22:19:32,917 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1802645532] [2025-01-08 22:19:32,917 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-01-08 22:19:32,918 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2025-01-08 22:19:32,918 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-08 22:19:32,918 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2025-01-08 22:19:32,918 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=155, Invalid=445, Unknown=0, NotChecked=0, Total=600 [2025-01-08 22:19:32,918 INFO L87 Difference]: Start difference. First operand 60 states and 64 transitions. Second operand has 25 states, 25 states have (on average 2.84) internal successors, (71), 25 states have internal predecessors, (71), 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 22:19:33,046 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-08 22:19:33,047 INFO L93 Difference]: Finished difference Result 123 states and 127 transitions. [2025-01-08 22:19:33,047 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2025-01-08 22:19:33,047 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 2.84) internal successors, (71), 25 states have internal predecessors, (71), 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 43 [2025-01-08 22:19:33,047 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-08 22:19:33,047 INFO L225 Difference]: With dead ends: 123 [2025-01-08 22:19:33,048 INFO L226 Difference]: Without dead ends: 97 [2025-01-08 22:19:33,048 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 107 GetRequests, 65 SyntacticMatches, 12 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 427 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=247, Invalid=745, Unknown=0, NotChecked=0, Total=992 [2025-01-08 22:19:33,048 INFO L435 NwaCegarLoop]: 11 mSDtfsCounter, 68 mSDsluCounter, 49 mSDsCounter, 0 mSdLazyCounter, 157 mSolverCounterSat, 43 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 68 SdHoareTripleChecker+Valid, 60 SdHoareTripleChecker+Invalid, 200 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 43 IncrementalHoareTripleChecker+Valid, 157 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-01-08 22:19:33,048 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [68 Valid, 60 Invalid, 200 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [43 Valid, 157 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-01-08 22:19:33,049 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 97 states. [2025-01-08 22:19:33,072 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 97 to 60. [2025-01-08 22:19:33,072 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 60 states, 59 states have (on average 1.0677966101694916) internal successors, (63), 59 states have internal predecessors, (63), 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 22:19:33,072 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60 states to 60 states and 63 transitions. [2025-01-08 22:19:33,073 INFO L78 Accepts]: Start accepts. Automaton has 60 states and 63 transitions. Word has length 43 [2025-01-08 22:19:33,073 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-08 22:19:33,073 INFO L471 AbstractCegarLoop]: Abstraction has 60 states and 63 transitions. [2025-01-08 22:19:33,073 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 2.84) internal successors, (71), 25 states have internal predecessors, (71), 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 22:19:33,073 INFO L276 IsEmpty]: Start isEmpty. Operand 60 states and 63 transitions. [2025-01-08 22:19:33,073 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2025-01-08 22:19:33,073 INFO L210 NwaCegarLoop]: Found error trace [2025-01-08 22:19:33,073 INFO L218 NwaCegarLoop]: trace histogram [9, 9, 8, 6, 5, 5, 1, 1, 1, 1, 1, 1, 1] [2025-01-08 22:19:33,080 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2025-01-08 22:19:33,278 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2025-01-08 22:19:33,278 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-01-08 22:19:33,278 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-08 22:19:33,278 INFO L85 PathProgramCache]: Analyzing trace with hash 2040095017, now seen corresponding path program 13 times [2025-01-08 22:19:33,278 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-08 22:19:33,279 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [380177701] [2025-01-08 22:19:33,279 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2025-01-08 22:19:33,279 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-08 22:19:33,285 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 49 statements into 1 equivalence classes. [2025-01-08 22:19:33,294 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 49 of 49 statements. [2025-01-08 22:19:33,294 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-08 22:19:33,294 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-08 22:19:33,780 INFO L134 CoverageAnalysis]: Checked inductivity of 157 backedges. 3 proven. 154 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-08 22:19:33,780 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-08 22:19:33,780 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [380177701] [2025-01-08 22:19:33,780 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [380177701] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-08 22:19:33,781 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1995970761] [2025-01-08 22:19:33,781 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2025-01-08 22:19:33,781 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-08 22:19:33,781 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-08 22:19:33,782 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-01-08 22:19:33,784 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2025-01-08 22:19:33,835 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 49 statements into 1 equivalence classes. [2025-01-08 22:19:33,854 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 49 of 49 statements. [2025-01-08 22:19:33,855 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-08 22:19:33,855 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-08 22:19:33,856 INFO L256 TraceCheckSpWp]: Trace formula consists of 228 conjuncts, 50 conjuncts are in the unsatisfiable core [2025-01-08 22:19:33,857 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-08 22:19:34,043 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2025-01-08 22:19:34,081 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 11 [2025-01-08 22:19:34,090 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 18 [2025-01-08 22:19:34,137 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-01-08 22:19:34,137 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 30 treesize of output 21 [2025-01-08 22:19:34,149 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-01-08 22:19:34,149 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 26 treesize of output 28 [2025-01-08 22:19:34,211 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-01-08 22:19:34,212 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 6 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 45 treesize of output 38 [2025-01-08 22:19:34,708 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-01-08 22:19:34,709 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 48 treesize of output 16 [2025-01-08 22:19:34,753 INFO L134 CoverageAnalysis]: Checked inductivity of 157 backedges. 0 proven. 157 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-08 22:19:34,754 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-01-08 22:19:35,160 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 42 treesize of output 40 [2025-01-08 22:19:35,161 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 234 treesize of output 230 [2025-01-08 22:19:35,625 INFO L134 CoverageAnalysis]: Checked inductivity of 157 backedges. 0 proven. 157 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-08 22:19:35,626 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1995970761] provided 0 perfect and 2 imperfect interpolant sequences [2025-01-08 22:19:35,626 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-01-08 22:19:35,626 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 19, 19] total 52 [2025-01-08 22:19:35,626 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1216452950] [2025-01-08 22:19:35,626 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-01-08 22:19:35,626 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 52 states [2025-01-08 22:19:35,626 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-08 22:19:35,627 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 52 interpolants. [2025-01-08 22:19:35,627 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=233, Invalid=2419, Unknown=0, NotChecked=0, Total=2652 [2025-01-08 22:19:35,627 INFO L87 Difference]: Start difference. First operand 60 states and 63 transitions. Second operand has 52 states, 52 states have (on average 2.6923076923076925) internal successors, (140), 52 states have internal predecessors, (140), 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 22:19:37,406 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-08 22:19:37,406 INFO L93 Difference]: Finished difference Result 149 states and 158 transitions. [2025-01-08 22:19:37,406 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2025-01-08 22:19:37,407 INFO L78 Accepts]: Start accepts. Automaton has has 52 states, 52 states have (on average 2.6923076923076925) internal successors, (140), 52 states have internal predecessors, (140), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 49 [2025-01-08 22:19:37,407 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-08 22:19:37,407 INFO L225 Difference]: With dead ends: 149 [2025-01-08 22:19:37,407 INFO L226 Difference]: Without dead ends: 147 [2025-01-08 22:19:37,409 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 153 GetRequests, 66 SyntacticMatches, 1 SemanticMatches, 86 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1211 ImplicationChecksByTransitivity, 2.3s TimeCoverageRelationStatistics Valid=725, Invalid=6931, Unknown=0, NotChecked=0, Total=7656 [2025-01-08 22:19:37,409 INFO L435 NwaCegarLoop]: 21 mSDtfsCounter, 225 mSDsluCounter, 396 mSDsCounter, 0 mSdLazyCounter, 1731 mSolverCounterSat, 69 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 225 SdHoareTripleChecker+Valid, 417 SdHoareTripleChecker+Invalid, 1800 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 69 IncrementalHoareTripleChecker+Valid, 1731 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2025-01-08 22:19:37,409 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [225 Valid, 417 Invalid, 1800 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [69 Valid, 1731 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2025-01-08 22:19:37,410 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 147 states. [2025-01-08 22:19:37,437 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 147 to 69. [2025-01-08 22:19:37,437 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 69 states, 68 states have (on average 1.0735294117647058) internal successors, (73), 68 states have internal predecessors, (73), 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 22:19:37,440 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 69 states to 69 states and 73 transitions. [2025-01-08 22:19:37,441 INFO L78 Accepts]: Start accepts. Automaton has 69 states and 73 transitions. Word has length 49 [2025-01-08 22:19:37,441 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-08 22:19:37,441 INFO L471 AbstractCegarLoop]: Abstraction has 69 states and 73 transitions. [2025-01-08 22:19:37,441 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 52 states, 52 states have (on average 2.6923076923076925) internal successors, (140), 52 states have internal predecessors, (140), 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 22:19:37,441 INFO L276 IsEmpty]: Start isEmpty. Operand 69 states and 73 transitions. [2025-01-08 22:19:37,444 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2025-01-08 22:19:37,444 INFO L210 NwaCegarLoop]: Found error trace [2025-01-08 22:19:37,444 INFO L218 NwaCegarLoop]: trace histogram [8, 8, 7, 7, 6, 6, 1, 1, 1, 1, 1, 1, 1] [2025-01-08 22:19:37,450 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2025-01-08 22:19:37,644 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2025-01-08 22:19:37,644 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-01-08 22:19:37,644 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-08 22:19:37,644 INFO L85 PathProgramCache]: Analyzing trace with hash 2067975238, now seen corresponding path program 14 times [2025-01-08 22:19:37,645 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-08 22:19:37,645 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [231988419] [2025-01-08 22:19:37,645 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-01-08 22:19:37,645 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-08 22:19:37,652 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 49 statements into 2 equivalence classes. [2025-01-08 22:19:37,661 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 49 of 49 statements. [2025-01-08 22:19:37,661 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-01-08 22:19:37,661 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-08 22:19:38,018 INFO L134 CoverageAnalysis]: Checked inductivity of 149 backedges. 0 proven. 149 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-08 22:19:38,018 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-08 22:19:38,018 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [231988419] [2025-01-08 22:19:38,018 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [231988419] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-08 22:19:38,018 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1694163190] [2025-01-08 22:19:38,018 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-01-08 22:19:38,018 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-08 22:19:38,018 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-08 22:19:38,021 INFO L229 MonitoredProcess]: Starting monitored process 17 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-01-08 22:19:38,025 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2025-01-08 22:19:38,082 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 49 statements into 2 equivalence classes. [2025-01-08 22:19:38,113 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 49 of 49 statements. [2025-01-08 22:19:38,114 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-01-08 22:19:38,114 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-08 22:19:38,115 INFO L256 TraceCheckSpWp]: Trace formula consists of 226 conjuncts, 41 conjuncts are in the unsatisfiable core [2025-01-08 22:19:38,116 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-08 22:19:38,338 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2025-01-08 22:19:38,381 INFO L190 IndexEqualityManager]: detected not equals via solver [2025-01-08 22:19:38,381 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 20 [2025-01-08 22:19:38,842 INFO L190 IndexEqualityManager]: detected not equals via solver [2025-01-08 22:19:38,844 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-01-08 22:19:38,844 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 28 treesize of output 10 [2025-01-08 22:19:38,872 INFO L134 CoverageAnalysis]: Checked inductivity of 149 backedges. 0 proven. 149 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-08 22:19:38,873 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-01-08 22:19:39,204 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 23 [2025-01-08 22:19:39,206 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 54 treesize of output 50 [2025-01-08 22:19:39,462 INFO L134 CoverageAnalysis]: Checked inductivity of 149 backedges. 0 proven. 149 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-08 22:19:39,462 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1694163190] provided 0 perfect and 2 imperfect interpolant sequences [2025-01-08 22:19:39,462 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-01-08 22:19:39,462 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 19, 19] total 52 [2025-01-08 22:19:39,462 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [939162127] [2025-01-08 22:19:39,462 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-01-08 22:19:39,462 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 52 states [2025-01-08 22:19:39,462 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-08 22:19:39,463 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 52 interpolants. [2025-01-08 22:19:39,463 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=163, Invalid=2489, Unknown=0, NotChecked=0, Total=2652 [2025-01-08 22:19:39,464 INFO L87 Difference]: Start difference. First operand 69 states and 73 transitions. Second operand has 52 states, 52 states have (on average 2.6923076923076925) internal successors, (140), 52 states have internal predecessors, (140), 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 22:19:40,775 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-08 22:19:40,775 INFO L93 Difference]: Finished difference Result 119 states and 123 transitions. [2025-01-08 22:19:40,775 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2025-01-08 22:19:40,775 INFO L78 Accepts]: Start accepts. Automaton has has 52 states, 52 states have (on average 2.6923076923076925) internal successors, (140), 52 states have internal predecessors, (140), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 49 [2025-01-08 22:19:40,776 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-08 22:19:40,776 INFO L225 Difference]: With dead ends: 119 [2025-01-08 22:19:40,776 INFO L226 Difference]: Without dead ends: 117 [2025-01-08 22:19:40,777 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 140 GetRequests, 64 SyntacticMatches, 1 SemanticMatches, 75 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 777 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=439, Invalid=5413, Unknown=0, NotChecked=0, Total=5852 [2025-01-08 22:19:40,778 INFO L435 NwaCegarLoop]: 21 mSDtfsCounter, 122 mSDsluCounter, 470 mSDsCounter, 0 mSdLazyCounter, 1753 mSolverCounterSat, 36 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 122 SdHoareTripleChecker+Valid, 491 SdHoareTripleChecker+Invalid, 1789 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 36 IncrementalHoareTripleChecker+Valid, 1753 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2025-01-08 22:19:40,778 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [122 Valid, 491 Invalid, 1789 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [36 Valid, 1753 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2025-01-08 22:19:40,778 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 117 states. [2025-01-08 22:19:40,790 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 117 to 67. [2025-01-08 22:19:40,791 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 67 states, 66 states have (on average 1.0757575757575757) internal successors, (71), 66 states have internal predecessors, (71), 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 22:19:40,791 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 67 states to 67 states and 71 transitions. [2025-01-08 22:19:40,791 INFO L78 Accepts]: Start accepts. Automaton has 67 states and 71 transitions. Word has length 49 [2025-01-08 22:19:40,791 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-08 22:19:40,791 INFO L471 AbstractCegarLoop]: Abstraction has 67 states and 71 transitions. [2025-01-08 22:19:40,791 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 52 states, 52 states have (on average 2.6923076923076925) internal successors, (140), 52 states have internal predecessors, (140), 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 22:19:40,792 INFO L276 IsEmpty]: Start isEmpty. Operand 67 states and 71 transitions. [2025-01-08 22:19:40,792 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2025-01-08 22:19:40,792 INFO L210 NwaCegarLoop]: Found error trace [2025-01-08 22:19:40,792 INFO L218 NwaCegarLoop]: trace histogram [8, 7, 7, 7, 7, 6, 1, 1, 1, 1, 1, 1, 1] [2025-01-08 22:19:40,798 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Forceful destruction successful, exit code 0 [2025-01-08 22:19:40,994 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2025-01-08 22:19:40,995 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-01-08 22:19:40,995 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-08 22:19:40,995 INFO L85 PathProgramCache]: Analyzing trace with hash -576016375, now seen corresponding path program 15 times [2025-01-08 22:19:40,995 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-08 22:19:40,995 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [987257009] [2025-01-08 22:19:40,995 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-01-08 22:19:40,996 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-08 22:19:41,002 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 49 statements into 8 equivalence classes. [2025-01-08 22:19:41,014 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 8 check-sat command(s) and asserted 49 of 49 statements. [2025-01-08 22:19:41,015 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 8 check-sat command(s) [2025-01-08 22:19:41,015 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-08 22:19:41,176 INFO L134 CoverageAnalysis]: Checked inductivity of 147 backedges. 58 proven. 89 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-08 22:19:41,176 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-08 22:19:41,176 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [987257009] [2025-01-08 22:19:41,176 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [987257009] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-08 22:19:41,177 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1706518810] [2025-01-08 22:19:41,177 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-01-08 22:19:41,177 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-08 22:19:41,177 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-08 22:19:41,180 INFO L229 MonitoredProcess]: Starting monitored process 18 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-01-08 22:19:41,185 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2025-01-08 22:19:41,245 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 49 statements into 8 equivalence classes. [2025-01-08 22:19:41,370 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 8 check-sat command(s) and asserted 49 of 49 statements. [2025-01-08 22:19:41,370 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 8 check-sat command(s) [2025-01-08 22:19:41,370 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-08 22:19:41,371 INFO L256 TraceCheckSpWp]: Trace formula consists of 224 conjuncts, 17 conjuncts are in the unsatisfiable core [2025-01-08 22:19:41,372 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-08 22:19:41,507 INFO L134 CoverageAnalysis]: Checked inductivity of 147 backedges. 77 proven. 70 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-08 22:19:41,507 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-01-08 22:19:41,610 INFO L134 CoverageAnalysis]: Checked inductivity of 147 backedges. 77 proven. 70 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-08 22:19:41,610 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1706518810] provided 0 perfect and 2 imperfect interpolant sequences [2025-01-08 22:19:41,610 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-01-08 22:19:41,611 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 18, 18] total 28 [2025-01-08 22:19:41,611 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1939415887] [2025-01-08 22:19:41,611 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-01-08 22:19:41,611 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2025-01-08 22:19:41,611 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-08 22:19:41,611 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2025-01-08 22:19:41,611 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=192, Invalid=564, Unknown=0, NotChecked=0, Total=756 [2025-01-08 22:19:41,611 INFO L87 Difference]: Start difference. First operand 67 states and 71 transitions. Second operand has 28 states, 28 states have (on average 2.857142857142857) internal successors, (80), 28 states have internal predecessors, (80), 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 22:19:41,759 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-08 22:19:41,760 INFO L93 Difference]: Finished difference Result 117 states and 121 transitions. [2025-01-08 22:19:41,760 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2025-01-08 22:19:41,760 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 28 states have (on average 2.857142857142857) internal successors, (80), 28 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 49 [2025-01-08 22:19:41,760 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-08 22:19:41,760 INFO L225 Difference]: With dead ends: 117 [2025-01-08 22:19:41,761 INFO L226 Difference]: Without dead ends: 88 [2025-01-08 22:19:41,761 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 122 GetRequests, 74 SyntacticMatches, 14 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 552 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=309, Invalid=951, Unknown=0, NotChecked=0, Total=1260 [2025-01-08 22:19:41,761 INFO L435 NwaCegarLoop]: 12 mSDtfsCounter, 46 mSDsluCounter, 68 mSDsCounter, 0 mSdLazyCounter, 206 mSolverCounterSat, 33 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 46 SdHoareTripleChecker+Valid, 80 SdHoareTripleChecker+Invalid, 239 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 33 IncrementalHoareTripleChecker+Valid, 206 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-01-08 22:19:41,762 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [46 Valid, 80 Invalid, 239 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [33 Valid, 206 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-01-08 22:19:41,762 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 88 states. [2025-01-08 22:19:41,774 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 88 to 67. [2025-01-08 22:19:41,775 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 67 states, 66 states have (on average 1.0606060606060606) internal successors, (70), 66 states have internal predecessors, (70), 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 22:19:41,775 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 67 states to 67 states and 70 transitions. [2025-01-08 22:19:41,775 INFO L78 Accepts]: Start accepts. Automaton has 67 states and 70 transitions. Word has length 49 [2025-01-08 22:19:41,775 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-08 22:19:41,775 INFO L471 AbstractCegarLoop]: Abstraction has 67 states and 70 transitions. [2025-01-08 22:19:41,776 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 28 states have (on average 2.857142857142857) internal successors, (80), 28 states have internal predecessors, (80), 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 22:19:41,776 INFO L276 IsEmpty]: Start isEmpty. Operand 67 states and 70 transitions. [2025-01-08 22:19:41,777 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2025-01-08 22:19:41,777 INFO L210 NwaCegarLoop]: Found error trace [2025-01-08 22:19:41,777 INFO L218 NwaCegarLoop]: trace histogram [8, 8, 8, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1] [2025-01-08 22:19:41,786 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Forceful destruction successful, exit code 0 [2025-01-08 22:19:41,977 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2025-01-08 22:19:41,978 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-01-08 22:19:41,978 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-08 22:19:41,978 INFO L85 PathProgramCache]: Analyzing trace with hash 44209938, now seen corresponding path program 16 times [2025-01-08 22:19:41,978 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-08 22:19:41,978 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1622615979] [2025-01-08 22:19:41,978 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-01-08 22:19:41,978 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-08 22:19:41,987 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 52 statements into 2 equivalence classes. [2025-01-08 22:19:42,008 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) and asserted 52 of 52 statements. [2025-01-08 22:19:42,008 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) [2025-01-08 22:19:42,008 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-08 22:19:42,362 INFO L134 CoverageAnalysis]: Checked inductivity of 169 backedges. 0 proven. 169 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-08 22:19:42,362 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-08 22:19:42,362 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1622615979] [2025-01-08 22:19:42,362 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1622615979] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-08 22:19:42,362 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1436775706] [2025-01-08 22:19:42,363 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-01-08 22:19:42,363 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-08 22:19:42,363 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-08 22:19:42,364 INFO L229 MonitoredProcess]: Starting monitored process 19 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-01-08 22:19:42,366 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2025-01-08 22:19:42,431 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 52 statements into 2 equivalence classes. [2025-01-08 22:19:42,570 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) and asserted 52 of 52 statements. [2025-01-08 22:19:42,570 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) [2025-01-08 22:19:42,570 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-08 22:19:42,572 INFO L256 TraceCheckSpWp]: Trace formula consists of 236 conjuncts, 26 conjuncts are in the unsatisfiable core [2025-01-08 22:19:42,573 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-08 22:19:42,786 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 1 [2025-01-08 22:19:43,282 INFO L349 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2025-01-08 22:19:43,282 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 23 treesize of output 10 [2025-01-08 22:19:43,320 INFO L134 CoverageAnalysis]: Checked inductivity of 169 backedges. 70 proven. 99 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-08 22:19:43,321 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-01-08 22:19:43,778 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 18 [2025-01-08 22:19:43,779 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 20 [2025-01-08 22:19:44,213 INFO L134 CoverageAnalysis]: Checked inductivity of 169 backedges. 63 proven. 106 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-08 22:19:44,214 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1436775706] provided 0 perfect and 2 imperfect interpolant sequences [2025-01-08 22:19:44,214 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-01-08 22:19:44,214 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 21, 21] total 57 [2025-01-08 22:19:44,214 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [735577946] [2025-01-08 22:19:44,214 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-01-08 22:19:44,214 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 57 states [2025-01-08 22:19:44,214 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-08 22:19:44,215 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 57 interpolants. [2025-01-08 22:19:44,215 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=389, Invalid=2803, Unknown=0, NotChecked=0, Total=3192 [2025-01-08 22:19:44,216 INFO L87 Difference]: Start difference. First operand 67 states and 70 transitions. Second operand has 57 states, 57 states have (on average 2.6140350877192984) internal successors, (149), 57 states have internal predecessors, (149), 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 22:19:45,049 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-08 22:19:45,050 INFO L93 Difference]: Finished difference Result 117 states and 120 transitions. [2025-01-08 22:19:45,050 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2025-01-08 22:19:45,050 INFO L78 Accepts]: Start accepts. Automaton has has 57 states, 57 states have (on average 2.6140350877192984) internal successors, (149), 57 states have internal predecessors, (149), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 52 [2025-01-08 22:19:45,050 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-08 22:19:45,050 INFO L225 Difference]: With dead ends: 117 [2025-01-08 22:19:45,050 INFO L226 Difference]: Without dead ends: 88 [2025-01-08 22:19:45,051 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 136 GetRequests, 66 SyntacticMatches, 1 SemanticMatches, 69 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 813 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=631, Invalid=4339, Unknown=0, NotChecked=0, Total=4970 [2025-01-08 22:19:45,052 INFO L435 NwaCegarLoop]: 14 mSDtfsCounter, 82 mSDsluCounter, 209 mSDsCounter, 0 mSdLazyCounter, 1122 mSolverCounterSat, 42 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 82 SdHoareTripleChecker+Valid, 223 SdHoareTripleChecker+Invalid, 1164 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 42 IncrementalHoareTripleChecker+Valid, 1122 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2025-01-08 22:19:45,052 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [82 Valid, 223 Invalid, 1164 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [42 Valid, 1122 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2025-01-08 22:19:45,053 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 88 states. [2025-01-08 22:19:45,068 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 88 to 67. [2025-01-08 22:19:45,069 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 67 states, 66 states have (on average 1.0454545454545454) internal successors, (69), 66 states have internal predecessors, (69), 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 22:19:45,070 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 67 states to 67 states and 69 transitions. [2025-01-08 22:19:45,071 INFO L78 Accepts]: Start accepts. Automaton has 67 states and 69 transitions. Word has length 52 [2025-01-08 22:19:45,071 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-08 22:19:45,071 INFO L471 AbstractCegarLoop]: Abstraction has 67 states and 69 transitions. [2025-01-08 22:19:45,071 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 57 states, 57 states have (on average 2.6140350877192984) internal successors, (149), 57 states have internal predecessors, (149), 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 22:19:45,071 INFO L276 IsEmpty]: Start isEmpty. Operand 67 states and 69 transitions. [2025-01-08 22:19:45,071 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2025-01-08 22:19:45,071 INFO L210 NwaCegarLoop]: Found error trace [2025-01-08 22:19:45,071 INFO L218 NwaCegarLoop]: trace histogram [10, 10, 9, 8, 7, 7, 1, 1, 1, 1, 1, 1, 1] [2025-01-08 22:19:45,078 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Forceful destruction successful, exit code 0 [2025-01-08 22:19:45,276 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,19 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-08 22:19:45,276 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-01-08 22:19:45,276 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-08 22:19:45,276 INFO L85 PathProgramCache]: Analyzing trace with hash -90692686, now seen corresponding path program 17 times [2025-01-08 22:19:45,276 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-08 22:19:45,276 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [642060028] [2025-01-08 22:19:45,276 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2025-01-08 22:19:45,276 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-08 22:19:45,286 INFO L108 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 partitioned 58 statements into 11 equivalence classes. [2025-01-08 22:19:45,311 INFO L111 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 11 check-sat command(s) and asserted 58 of 58 statements. [2025-01-08 22:19:45,311 INFO L114 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 11 check-sat command(s) [2025-01-08 22:19:45,311 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-08 22:19:45,762 INFO L134 CoverageAnalysis]: Checked inductivity of 222 backedges. 0 proven. 222 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-08 22:19:45,762 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-08 22:19:45,762 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [642060028] [2025-01-08 22:19:45,762 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [642060028] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-08 22:19:45,762 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [835352967] [2025-01-08 22:19:45,762 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2025-01-08 22:19:45,762 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-08 22:19:45,763 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-08 22:19:45,765 INFO L229 MonitoredProcess]: Starting monitored process 20 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-01-08 22:19:45,766 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2025-01-08 22:19:45,835 INFO L108 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 partitioned 58 statements into 11 equivalence classes. [2025-01-08 22:19:46,004 INFO L111 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 11 check-sat command(s) and asserted 58 of 58 statements. [2025-01-08 22:19:46,004 INFO L114 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 11 check-sat command(s) [2025-01-08 22:19:46,004 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-08 22:19:46,012 INFO L256 TraceCheckSpWp]: Trace formula consists of 260 conjuncts, 52 conjuncts are in the unsatisfiable core [2025-01-08 22:19:46,014 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-08 22:19:46,245 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2025-01-08 22:19:46,289 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 11 [2025-01-08 22:19:46,298 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 18 [2025-01-08 22:19:46,358 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-01-08 22:19:46,358 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 34 treesize of output 28 [2025-01-08 22:19:46,804 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-01-08 22:19:46,804 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 37 treesize of output 13 [2025-01-08 22:19:46,832 INFO L134 CoverageAnalysis]: Checked inductivity of 222 backedges. 0 proven. 222 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-08 22:19:46,832 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-01-08 22:19:47,214 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 34 treesize of output 32 [2025-01-08 22:19:47,216 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 114 treesize of output 110 [2025-01-08 22:19:47,676 INFO L134 CoverageAnalysis]: Checked inductivity of 222 backedges. 0 proven. 222 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-08 22:19:47,676 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [835352967] provided 0 perfect and 2 imperfect interpolant sequences [2025-01-08 22:19:47,676 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-01-08 22:19:47,676 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 22, 22] total 61 [2025-01-08 22:19:47,676 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [725063045] [2025-01-08 22:19:47,677 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-01-08 22:19:47,677 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 61 states [2025-01-08 22:19:47,677 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-08 22:19:47,677 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 61 interpolants. [2025-01-08 22:19:47,678 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=241, Invalid=3419, Unknown=0, NotChecked=0, Total=3660 [2025-01-08 22:19:47,678 INFO L87 Difference]: Start difference. First operand 67 states and 69 transitions. Second operand has 61 states, 61 states have (on average 2.737704918032787) internal successors, (167), 61 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 22:19:49,709 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-08 22:19:49,709 INFO L93 Difference]: Finished difference Result 143 states and 150 transitions. [2025-01-08 22:19:49,710 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2025-01-08 22:19:49,710 INFO L78 Accepts]: Start accepts. Automaton has has 61 states, 61 states have (on average 2.737704918032787) internal successors, (167), 61 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) Word has length 58 [2025-01-08 22:19:49,710 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-08 22:19:49,710 INFO L225 Difference]: With dead ends: 143 [2025-01-08 22:19:49,710 INFO L226 Difference]: Without dead ends: 141 [2025-01-08 22:19:49,712 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 179 GetRequests, 77 SyntacticMatches, 1 SemanticMatches, 101 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1544 ImplicationChecksByTransitivity, 2.5s TimeCoverageRelationStatistics Valid=748, Invalid=9758, Unknown=0, NotChecked=0, Total=10506 [2025-01-08 22:19:49,713 INFO L435 NwaCegarLoop]: 22 mSDtfsCounter, 216 mSDsluCounter, 600 mSDsCounter, 0 mSdLazyCounter, 2555 mSolverCounterSat, 66 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 216 SdHoareTripleChecker+Valid, 622 SdHoareTripleChecker+Invalid, 2621 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 66 IncrementalHoareTripleChecker+Valid, 2555 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2025-01-08 22:19:49,713 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [216 Valid, 622 Invalid, 2621 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [66 Valid, 2555 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2025-01-08 22:19:49,713 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 141 states. [2025-01-08 22:19:49,730 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 141 to 75. [2025-01-08 22:19:49,730 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 75 states, 74 states have (on average 1.054054054054054) internal successors, (78), 74 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 22:19:49,731 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 75 states to 75 states and 78 transitions. [2025-01-08 22:19:49,731 INFO L78 Accepts]: Start accepts. Automaton has 75 states and 78 transitions. Word has length 58 [2025-01-08 22:19:49,731 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-08 22:19:49,731 INFO L471 AbstractCegarLoop]: Abstraction has 75 states and 78 transitions. [2025-01-08 22:19:49,731 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 61 states, 61 states have (on average 2.737704918032787) internal successors, (167), 61 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 22:19:49,731 INFO L276 IsEmpty]: Start isEmpty. Operand 75 states and 78 transitions. [2025-01-08 22:19:49,731 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2025-01-08 22:19:49,732 INFO L210 NwaCegarLoop]: Found error trace [2025-01-08 22:19:49,732 INFO L218 NwaCegarLoop]: trace histogram [10, 9, 9, 9, 9, 8, 1, 1, 1, 1, 1, 1, 1] [2025-01-08 22:19:49,739 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Forceful destruction successful, exit code 0 [2025-01-08 22:19:49,932 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,20 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-08 22:19:49,932 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-01-08 22:19:49,932 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-08 22:19:49,932 INFO L85 PathProgramCache]: Analyzing trace with hash 435928489, now seen corresponding path program 18 times [2025-01-08 22:19:49,933 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-08 22:19:49,933 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1048344947] [2025-01-08 22:19:49,933 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2025-01-08 22:19:49,933 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-08 22:19:49,940 INFO L108 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE partitioned 61 statements into 10 equivalence classes. [2025-01-08 22:19:49,954 INFO L111 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 10 check-sat command(s) and asserted 61 of 61 statements. [2025-01-08 22:19:49,955 INFO L114 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 10 check-sat command(s) [2025-01-08 22:19:49,955 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-08 22:19:50,158 INFO L134 CoverageAnalysis]: Checked inductivity of 243 backedges. 101 proven. 142 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-08 22:19:50,159 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-08 22:19:50,159 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1048344947] [2025-01-08 22:19:50,159 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1048344947] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-08 22:19:50,159 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [926171406] [2025-01-08 22:19:50,159 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2025-01-08 22:19:50,159 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-08 22:19:50,159 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-08 22:19:50,162 INFO L229 MonitoredProcess]: Starting monitored process 21 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-01-08 22:19:50,168 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2025-01-08 22:19:50,240 INFO L108 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE partitioned 61 statements into 10 equivalence classes. [2025-01-08 22:19:50,414 INFO L111 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 10 check-sat command(s) and asserted 61 of 61 statements. [2025-01-08 22:19:50,414 INFO L114 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 10 check-sat command(s) [2025-01-08 22:19:50,414 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-08 22:19:50,416 INFO L256 TraceCheckSpWp]: Trace formula consists of 268 conjuncts, 30 conjuncts are in the unsatisfiable core [2025-01-08 22:19:50,417 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-08 22:19:50,634 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 1 [2025-01-08 22:19:51,007 WARN L214 Elim1Store]: Array PQE input equivalent to false [2025-01-08 22:19:51,007 INFO L134 CoverageAnalysis]: Checked inductivity of 243 backedges. 126 proven. 117 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-08 22:19:51,008 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-01-08 22:19:51,459 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 18 [2025-01-08 22:19:51,461 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 20 [2025-01-08 22:19:51,863 INFO L134 CoverageAnalysis]: Checked inductivity of 243 backedges. 108 proven. 135 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-08 22:19:51,863 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [926171406] provided 0 perfect and 2 imperfect interpolant sequences [2025-01-08 22:19:51,863 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-01-08 22:19:51,863 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 24, 25] total 67 [2025-01-08 22:19:51,863 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2065726819] [2025-01-08 22:19:51,863 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-01-08 22:19:51,864 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 67 states [2025-01-08 22:19:51,864 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-08 22:19:51,864 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 67 interpolants. [2025-01-08 22:19:51,864 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=836, Invalid=3586, Unknown=0, NotChecked=0, Total=4422 [2025-01-08 22:19:51,865 INFO L87 Difference]: Start difference. First operand 75 states and 78 transitions. Second operand has 67 states, 67 states have (on average 2.626865671641791) internal successors, (176), 67 states have internal predecessors, (176), 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 22:19:52,802 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-08 22:19:52,803 INFO L93 Difference]: Finished difference Result 141 states and 145 transitions. [2025-01-08 22:19:52,803 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 59 states. [2025-01-08 22:19:52,803 INFO L78 Accepts]: Start accepts. Automaton has has 67 states, 67 states have (on average 2.626865671641791) internal successors, (176), 67 states have internal predecessors, (176), 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 61 [2025-01-08 22:19:52,803 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-08 22:19:52,804 INFO L225 Difference]: With dead ends: 141 [2025-01-08 22:19:52,804 INFO L226 Difference]: Without dead ends: 72 [2025-01-08 22:19:52,805 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 174 GetRequests, 77 SyntacticMatches, 0 SemanticMatches, 97 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3474 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=1665, Invalid=8037, Unknown=0, NotChecked=0, Total=9702 [2025-01-08 22:19:52,805 INFO L435 NwaCegarLoop]: 13 mSDtfsCounter, 194 mSDsluCounter, 202 mSDsCounter, 0 mSdLazyCounter, 581 mSolverCounterSat, 91 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 194 SdHoareTripleChecker+Valid, 215 SdHoareTripleChecker+Invalid, 672 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 91 IncrementalHoareTripleChecker+Valid, 581 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2025-01-08 22:19:52,805 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [194 Valid, 215 Invalid, 672 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [91 Valid, 581 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2025-01-08 22:19:52,805 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 72 states. [2025-01-08 22:19:52,820 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 72 to 65. [2025-01-08 22:19:52,820 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 65 states, 64 states have (on average 1.03125) internal successors, (66), 64 states have internal predecessors, (66), 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 22:19:52,821 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65 states to 65 states and 66 transitions. [2025-01-08 22:19:52,821 INFO L78 Accepts]: Start accepts. Automaton has 65 states and 66 transitions. Word has length 61 [2025-01-08 22:19:52,821 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-08 22:19:52,821 INFO L471 AbstractCegarLoop]: Abstraction has 65 states and 66 transitions. [2025-01-08 22:19:52,821 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 67 states, 67 states have (on average 2.626865671641791) internal successors, (176), 67 states have internal predecessors, (176), 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 22:19:52,821 INFO L276 IsEmpty]: Start isEmpty. Operand 65 states and 66 transitions. [2025-01-08 22:19:52,821 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2025-01-08 22:19:52,821 INFO L210 NwaCegarLoop]: Found error trace [2025-01-08 22:19:52,821 INFO L218 NwaCegarLoop]: trace histogram [11, 11, 10, 9, 8, 8, 1, 1, 1, 1, 1, 1, 1] [2025-01-08 22:19:52,827 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Ended with exit code 0 [2025-01-08 22:19:53,026 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,21 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-08 22:19:53,026 INFO L396 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-01-08 22:19:53,026 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-08 22:19:53,026 INFO L85 PathProgramCache]: Analyzing trace with hash -153380433, now seen corresponding path program 19 times [2025-01-08 22:19:53,026 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-08 22:19:53,026 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1563971182] [2025-01-08 22:19:53,026 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2025-01-08 22:19:53,026 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-08 22:19:53,036 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 64 statements into 1 equivalence classes. [2025-01-08 22:19:53,048 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 64 of 64 statements. [2025-01-08 22:19:53,048 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-08 22:19:53,048 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-08 22:19:53,567 INFO L134 CoverageAnalysis]: Checked inductivity of 276 backedges. 0 proven. 276 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-08 22:19:53,567 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-08 22:19:53,567 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1563971182] [2025-01-08 22:19:53,567 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1563971182] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-08 22:19:53,567 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [56750391] [2025-01-08 22:19:53,567 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2025-01-08 22:19:53,567 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-08 22:19:53,567 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-08 22:19:53,569 INFO L229 MonitoredProcess]: Starting monitored process 22 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-01-08 22:19:53,571 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process [2025-01-08 22:19:53,643 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 64 statements into 1 equivalence classes. [2025-01-08 22:19:53,666 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 64 of 64 statements. [2025-01-08 22:19:53,666 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-08 22:19:53,667 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-08 22:19:53,668 INFO L256 TraceCheckSpWp]: Trace formula consists of 282 conjuncts, 56 conjuncts are in the unsatisfiable core [2025-01-08 22:19:53,669 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-08 22:19:53,996 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2025-01-08 22:19:54,041 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 11 [2025-01-08 22:19:54,049 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 18 [2025-01-08 22:19:54,108 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-01-08 22:19:54,109 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 34 treesize of output 28 [2025-01-08 22:19:54,748 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-01-08 22:19:54,749 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 37 treesize of output 13 [2025-01-08 22:19:54,782 INFO L134 CoverageAnalysis]: Checked inductivity of 276 backedges. 0 proven. 276 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-08 22:19:54,782 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-01-08 22:19:55,307 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 34 treesize of output 32 [2025-01-08 22:19:55,308 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 114 treesize of output 110 [2025-01-08 22:19:55,935 INFO L134 CoverageAnalysis]: Checked inductivity of 276 backedges. 0 proven. 276 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-08 22:19:55,935 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [56750391] provided 0 perfect and 2 imperfect interpolant sequences [2025-01-08 22:19:55,936 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-01-08 22:19:55,936 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24, 24, 24] total 67 [2025-01-08 22:19:55,936 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1802578509] [2025-01-08 22:19:55,936 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-01-08 22:19:55,936 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 67 states [2025-01-08 22:19:55,936 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-08 22:19:55,937 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 67 interpolants. [2025-01-08 22:19:55,937 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=272, Invalid=4150, Unknown=0, NotChecked=0, Total=4422 [2025-01-08 22:19:55,937 INFO L87 Difference]: Start difference. First operand 65 states and 66 transitions. Second operand has 67 states, 67 states have (on average 2.7611940298507465) internal successors, (185), 67 states have internal predecessors, (185), 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 22:19:57,742 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-08 22:19:57,744 INFO L93 Difference]: Finished difference Result 118 states and 124 transitions. [2025-01-08 22:19:57,744 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2025-01-08 22:19:57,744 INFO L78 Accepts]: Start accepts. Automaton has has 67 states, 67 states have (on average 2.7611940298507465) internal successors, (185), 67 states have internal predecessors, (185), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 64 [2025-01-08 22:19:57,745 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-08 22:19:57,745 INFO L225 Difference]: With dead ends: 118 [2025-01-08 22:19:57,745 INFO L226 Difference]: Without dead ends: 116 [2025-01-08 22:19:57,750 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 186 GetRequests, 85 SyntacticMatches, 1 SemanticMatches, 100 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1399 ImplicationChecksByTransitivity, 2.9s TimeCoverageRelationStatistics Valid=656, Invalid=9646, Unknown=0, NotChecked=0, Total=10302 [2025-01-08 22:19:57,752 INFO L435 NwaCegarLoop]: 15 mSDtfsCounter, 96 mSDsluCounter, 435 mSDsCounter, 0 mSdLazyCounter, 2189 mSolverCounterSat, 27 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 96 SdHoareTripleChecker+Valid, 450 SdHoareTripleChecker+Invalid, 2216 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 27 IncrementalHoareTripleChecker+Valid, 2189 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2025-01-08 22:19:57,752 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [96 Valid, 450 Invalid, 2216 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [27 Valid, 2189 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2025-01-08 22:19:57,752 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 116 states. [2025-01-08 22:19:57,773 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 116 to 79. [2025-01-08 22:19:57,773 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 79 states, 78 states have (on average 1.0384615384615385) internal successors, (81), 78 states have internal predecessors, (81), 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 22:19:57,773 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 79 states to 79 states and 81 transitions. [2025-01-08 22:19:57,773 INFO L78 Accepts]: Start accepts. Automaton has 79 states and 81 transitions. Word has length 64 [2025-01-08 22:19:57,774 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-08 22:19:57,774 INFO L471 AbstractCegarLoop]: Abstraction has 79 states and 81 transitions. [2025-01-08 22:19:57,774 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 67 states, 67 states have (on average 2.7611940298507465) internal successors, (185), 67 states have internal predecessors, (185), 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 22:19:57,774 INFO L276 IsEmpty]: Start isEmpty. Operand 79 states and 81 transitions. [2025-01-08 22:19:57,774 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2025-01-08 22:19:57,774 INFO L210 NwaCegarLoop]: Found error trace [2025-01-08 22:19:57,774 INFO L218 NwaCegarLoop]: trace histogram [12, 12, 11, 10, 9, 9, 1, 1, 1, 1, 1, 1, 1] [2025-01-08 22:19:57,780 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Forceful destruction successful, exit code 0 [2025-01-08 22:19:57,979 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable21 [2025-01-08 22:19:57,979 INFO L396 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-01-08 22:19:57,979 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-08 22:19:57,979 INFO L85 PathProgramCache]: Analyzing trace with hash -1949041710, now seen corresponding path program 20 times [2025-01-08 22:19:57,979 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-08 22:19:57,979 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1353595653] [2025-01-08 22:19:57,979 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-01-08 22:19:57,979 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-08 22:19:57,989 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 70 statements into 2 equivalence classes. [2025-01-08 22:19:58,032 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 70 of 70 statements. [2025-01-08 22:19:58,032 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-01-08 22:19:58,032 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-08 22:19:58,658 INFO L134 CoverageAnalysis]: Checked inductivity of 336 backedges. 0 proven. 336 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-08 22:19:58,658 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-08 22:19:58,658 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1353595653] [2025-01-08 22:19:58,658 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1353595653] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-08 22:19:58,658 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [841380668] [2025-01-08 22:19:58,658 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-01-08 22:19:58,659 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-08 22:19:58,659 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-08 22:19:58,661 INFO L229 MonitoredProcess]: Starting monitored process 23 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-01-08 22:19:58,661 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Waiting until timeout for monitored process [2025-01-08 22:19:58,741 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 70 statements into 2 equivalence classes. [2025-01-08 22:19:58,771 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 70 of 70 statements. [2025-01-08 22:19:58,771 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-01-08 22:19:58,771 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-08 22:19:58,772 INFO L256 TraceCheckSpWp]: Trace formula consists of 304 conjuncts, 60 conjuncts are in the unsatisfiable core [2025-01-08 22:19:58,774 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-08 22:19:59,154 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2025-01-08 22:19:59,211 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 11 [2025-01-08 22:19:59,223 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 18 [2025-01-08 22:19:59,287 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-01-08 22:19:59,287 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 34 treesize of output 28 [2025-01-08 22:19:59,982 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-01-08 22:19:59,982 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 37 treesize of output 13 [2025-01-08 22:20:00,017 INFO L134 CoverageAnalysis]: Checked inductivity of 336 backedges. 0 proven. 336 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-08 22:20:00,017 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-01-08 22:20:00,642 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 34 treesize of output 32 [2025-01-08 22:20:00,648 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 114 treesize of output 110 [2025-01-08 22:20:01,257 INFO L134 CoverageAnalysis]: Checked inductivity of 336 backedges. 0 proven. 336 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-08 22:20:01,257 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [841380668] provided 0 perfect and 2 imperfect interpolant sequences [2025-01-08 22:20:01,257 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-01-08 22:20:01,257 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [26, 26, 26] total 73 [2025-01-08 22:20:01,257 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [398076118] [2025-01-08 22:20:01,257 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-01-08 22:20:01,258 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 73 states [2025-01-08 22:20:01,258 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-08 22:20:01,258 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 73 interpolants. [2025-01-08 22:20:01,258 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=298, Invalid=4958, Unknown=0, NotChecked=0, Total=5256 [2025-01-08 22:20:01,259 INFO L87 Difference]: Start difference. First operand 79 states and 81 transitions. Second operand has 73 states, 73 states have (on average 2.780821917808219) internal successors, (203), 73 states have internal predecessors, (203), 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 22:20:03,819 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-08 22:20:03,819 INFO L93 Difference]: Finished difference Result 167 states and 174 transitions. [2025-01-08 22:20:03,820 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 54 states. [2025-01-08 22:20:03,820 INFO L78 Accepts]: Start accepts. Automaton has has 73 states, 73 states have (on average 2.780821917808219) internal successors, (203), 73 states have internal predecessors, (203), 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 70 [2025-01-08 22:20:03,820 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-08 22:20:03,820 INFO L225 Difference]: With dead ends: 167 [2025-01-08 22:20:03,820 INFO L226 Difference]: Without dead ends: 165 [2025-01-08 22:20:03,821 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 214 GetRequests, 93 SyntacticMatches, 1 SemanticMatches, 120 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2236 ImplicationChecksByTransitivity, 3.5s TimeCoverageRelationStatistics Valid=887, Invalid=13875, Unknown=0, NotChecked=0, Total=14762 [2025-01-08 22:20:03,825 INFO L435 NwaCegarLoop]: 26 mSDtfsCounter, 306 mSDsluCounter, 857 mSDsCounter, 0 mSdLazyCounter, 3322 mSolverCounterSat, 80 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 306 SdHoareTripleChecker+Valid, 883 SdHoareTripleChecker+Invalid, 3402 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 80 IncrementalHoareTripleChecker+Valid, 3322 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2025-01-08 22:20:03,826 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [306 Valid, 883 Invalid, 3402 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [80 Valid, 3322 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2025-01-08 22:20:03,826 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 165 states. [2025-01-08 22:20:03,855 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 165 to 87. [2025-01-08 22:20:03,855 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 87 states, 86 states have (on average 1.0465116279069768) internal successors, (90), 86 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-08 22:20:03,855 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 87 states to 87 states and 90 transitions. [2025-01-08 22:20:03,855 INFO L78 Accepts]: Start accepts. Automaton has 87 states and 90 transitions. Word has length 70 [2025-01-08 22:20:03,856 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-08 22:20:03,856 INFO L471 AbstractCegarLoop]: Abstraction has 87 states and 90 transitions. [2025-01-08 22:20:03,856 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 73 states, 73 states have (on average 2.780821917808219) internal successors, (203), 73 states have internal predecessors, (203), 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 22:20:03,856 INFO L276 IsEmpty]: Start isEmpty. Operand 87 states and 90 transitions. [2025-01-08 22:20:03,856 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2025-01-08 22:20:03,856 INFO L210 NwaCegarLoop]: Found error trace [2025-01-08 22:20:03,856 INFO L218 NwaCegarLoop]: trace histogram [12, 11, 11, 11, 11, 10, 1, 1, 1, 1, 1, 1, 1] [2025-01-08 22:20:03,863 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Ended with exit code 0 [2025-01-08 22:20:04,061 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 23 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable22 [2025-01-08 22:20:04,061 INFO L396 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-01-08 22:20:04,061 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-08 22:20:04,061 INFO L85 PathProgramCache]: Analyzing trace with hash -829947063, now seen corresponding path program 21 times [2025-01-08 22:20:04,061 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-08 22:20:04,061 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [936436574] [2025-01-08 22:20:04,061 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-01-08 22:20:04,061 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-08 22:20:04,069 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 73 statements into 12 equivalence classes. [2025-01-08 22:20:04,095 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 12 check-sat command(s) and asserted 73 of 73 statements. [2025-01-08 22:20:04,095 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 12 check-sat command(s) [2025-01-08 22:20:04,095 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-08 22:20:04,361 INFO L134 CoverageAnalysis]: Checked inductivity of 363 backedges. 156 proven. 207 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-08 22:20:04,361 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-08 22:20:04,362 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [936436574] [2025-01-08 22:20:04,362 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [936436574] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-08 22:20:04,362 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1966820749] [2025-01-08 22:20:04,362 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-01-08 22:20:04,363 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-08 22:20:04,363 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-08 22:20:04,365 INFO L229 MonitoredProcess]: Starting monitored process 24 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-01-08 22:20:04,366 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Waiting until timeout for monitored process [2025-01-08 22:20:04,449 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 73 statements into 12 equivalence classes. [2025-01-08 22:20:04,783 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 12 check-sat command(s) and asserted 73 of 73 statements. [2025-01-08 22:20:04,783 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 12 check-sat command(s) [2025-01-08 22:20:04,783 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-08 22:20:04,786 INFO L256 TraceCheckSpWp]: Trace formula consists of 312 conjuncts, 33 conjuncts are in the unsatisfiable core [2025-01-08 22:20:04,787 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-08 22:20:05,042 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 1 [2025-01-08 22:20:05,717 WARN L214 Elim1Store]: Array PQE input equivalent to false [2025-01-08 22:20:05,718 INFO L134 CoverageAnalysis]: Checked inductivity of 363 backedges. 187 proven. 176 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-08 22:20:05,718 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-01-08 22:20:06,303 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 18 [2025-01-08 22:20:06,305 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 20 [2025-01-08 22:20:06,802 INFO L134 CoverageAnalysis]: Checked inductivity of 363 backedges. 165 proven. 198 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-08 22:20:06,802 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1966820749] provided 0 perfect and 2 imperfect interpolant sequences [2025-01-08 22:20:06,802 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-01-08 22:20:06,802 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [26, 27, 28] total 77 [2025-01-08 22:20:06,802 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1822698684] [2025-01-08 22:20:06,802 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-01-08 22:20:06,803 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 77 states [2025-01-08 22:20:06,803 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-08 22:20:06,803 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 77 interpolants. [2025-01-08 22:20:06,804 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=1093, Invalid=4759, Unknown=0, NotChecked=0, Total=5852 [2025-01-08 22:20:06,804 INFO L87 Difference]: Start difference. First operand 87 states and 90 transitions. Second operand has 77 states, 77 states have (on average 2.7532467532467533) internal successors, (212), 77 states have internal predecessors, (212), 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 22:20:07,874 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-08 22:20:07,874 INFO L93 Difference]: Finished difference Result 165 states and 169 transitions. [2025-01-08 22:20:07,874 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 58 states. [2025-01-08 22:20:07,875 INFO L78 Accepts]: Start accepts. Automaton has has 77 states, 77 states have (on average 2.7532467532467533) internal successors, (212), 77 states have internal predecessors, (212), 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 73 [2025-01-08 22:20:07,875 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-08 22:20:07,875 INFO L225 Difference]: With dead ends: 165 [2025-01-08 22:20:07,875 INFO L226 Difference]: Without dead ends: 84 [2025-01-08 22:20:07,876 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 199 GetRequests, 95 SyntacticMatches, 0 SemanticMatches, 104 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4137 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=1949, Invalid=9181, Unknown=0, NotChecked=0, Total=11130 [2025-01-08 22:20:07,877 INFO L435 NwaCegarLoop]: 15 mSDtfsCounter, 204 mSDsluCounter, 216 mSDsCounter, 0 mSdLazyCounter, 630 mSolverCounterSat, 122 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 204 SdHoareTripleChecker+Valid, 231 SdHoareTripleChecker+Invalid, 752 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 122 IncrementalHoareTripleChecker+Valid, 630 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2025-01-08 22:20:07,877 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [204 Valid, 231 Invalid, 752 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [122 Valid, 630 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2025-01-08 22:20:07,877 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 84 states. [2025-01-08 22:20:07,897 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 84 to 77. [2025-01-08 22:20:07,898 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 77 states, 76 states have (on average 1.0263157894736843) internal successors, (78), 76 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 22:20:07,898 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 77 states to 77 states and 78 transitions. [2025-01-08 22:20:07,898 INFO L78 Accepts]: Start accepts. Automaton has 77 states and 78 transitions. Word has length 73 [2025-01-08 22:20:07,898 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-08 22:20:07,898 INFO L471 AbstractCegarLoop]: Abstraction has 77 states and 78 transitions. [2025-01-08 22:20:07,899 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 77 states, 77 states have (on average 2.7532467532467533) internal successors, (212), 77 states have internal predecessors, (212), 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 22:20:07,899 INFO L276 IsEmpty]: Start isEmpty. Operand 77 states and 78 transitions. [2025-01-08 22:20:07,899 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2025-01-08 22:20:07,899 INFO L210 NwaCegarLoop]: Found error trace [2025-01-08 22:20:07,899 INFO L218 NwaCegarLoop]: trace histogram [13, 13, 12, 11, 10, 10, 1, 1, 1, 1, 1, 1, 1] [2025-01-08 22:20:07,906 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Ended with exit code 0 [2025-01-08 22:20:08,103 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 24 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable23 [2025-01-08 22:20:08,103 INFO L396 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-01-08 22:20:08,103 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-08 22:20:08,104 INFO L85 PathProgramCache]: Analyzing trace with hash -1657518065, now seen corresponding path program 22 times [2025-01-08 22:20:08,104 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-08 22:20:08,104 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1768304489] [2025-01-08 22:20:08,104 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-01-08 22:20:08,104 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-08 22:20:08,113 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 76 statements into 2 equivalence classes. [2025-01-08 22:20:08,126 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) and asserted 76 of 76 statements. [2025-01-08 22:20:08,126 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) [2025-01-08 22:20:08,126 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-08 22:20:08,795 INFO L134 CoverageAnalysis]: Checked inductivity of 402 backedges. 0 proven. 402 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-08 22:20:08,795 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-08 22:20:08,796 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1768304489] [2025-01-08 22:20:08,796 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1768304489] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-08 22:20:08,796 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2012208889] [2025-01-08 22:20:08,796 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-01-08 22:20:08,796 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-08 22:20:08,796 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-08 22:20:08,799 INFO L229 MonitoredProcess]: Starting monitored process 25 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-01-08 22:20:08,800 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Waiting until timeout for monitored process [2025-01-08 22:20:08,888 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 76 statements into 2 equivalence classes. [2025-01-08 22:20:09,543 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) and asserted 76 of 76 statements. [2025-01-08 22:20:09,543 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) [2025-01-08 22:20:09,543 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-08 22:20:09,547 INFO L256 TraceCheckSpWp]: Trace formula consists of 326 conjuncts, 62 conjuncts are in the unsatisfiable core [2025-01-08 22:20:09,549 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-08 22:20:09,983 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2025-01-08 22:20:10,032 INFO L190 IndexEqualityManager]: detected not equals via solver [2025-01-08 22:20:10,033 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 31 treesize of output 11 [2025-01-08 22:20:10,043 INFO L190 IndexEqualityManager]: detected not equals via solver [2025-01-08 22:20:10,044 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 20 [2025-01-08 22:20:10,129 INFO L190 IndexEqualityManager]: detected not equals via solver [2025-01-08 22:20:10,130 INFO L190 IndexEqualityManager]: detected not equals via solver [2025-01-08 22:20:10,131 INFO L190 IndexEqualityManager]: detected not equals via solver [2025-01-08 22:20:10,132 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-01-08 22:20:10,132 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 38 treesize of output 32 [2025-01-08 22:20:11,331 INFO L190 IndexEqualityManager]: detected not equals via solver [2025-01-08 22:20:11,332 INFO L190 IndexEqualityManager]: detected not equals via solver [2025-01-08 22:20:11,332 INFO L190 IndexEqualityManager]: detected not equals via solver [2025-01-08 22:20:11,334 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-01-08 22:20:11,334 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 45 treesize of output 13 [2025-01-08 22:20:11,376 INFO L134 CoverageAnalysis]: Checked inductivity of 402 backedges. 3 proven. 399 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-08 22:20:11,376 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-01-08 22:20:17,267 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 40 treesize of output 38 [2025-01-08 22:20:17,271 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 966 treesize of output 950 [2025-01-08 22:20:18,170 INFO L134 CoverageAnalysis]: Checked inductivity of 402 backedges. 0 proven. 402 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-08 22:20:18,170 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2012208889] provided 0 perfect and 2 imperfect interpolant sequences [2025-01-08 22:20:18,170 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-01-08 22:20:18,170 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [28, 28, 29] total 80 [2025-01-08 22:20:18,171 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1013872346] [2025-01-08 22:20:18,171 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-01-08 22:20:18,171 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 80 states [2025-01-08 22:20:18,171 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-08 22:20:18,172 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 80 interpolants. [2025-01-08 22:20:18,173 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=264, Invalid=6054, Unknown=2, NotChecked=0, Total=6320 [2025-01-08 22:20:18,173 INFO L87 Difference]: Start difference. First operand 77 states and 78 transitions. Second operand has 80 states, 80 states have (on average 2.7625) internal successors, (221), 80 states have internal predecessors, (221), 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 22:20:28,252 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.17s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2025-01-08 22:20:35,010 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-08 22:20:35,010 INFO L93 Difference]: Finished difference Result 87 states and 89 transitions. [2025-01-08 22:20:35,010 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2025-01-08 22:20:35,010 INFO L78 Accepts]: Start accepts. Automaton has has 80 states, 80 states have (on average 2.7625) internal successors, (221), 80 states have internal predecessors, (221), 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 76 [2025-01-08 22:20:35,010 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-08 22:20:35,011 INFO L225 Difference]: With dead ends: 87 [2025-01-08 22:20:35,011 INFO L226 Difference]: Without dead ends: 85 [2025-01-08 22:20:35,012 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 206 GetRequests, 100 SyntacticMatches, 1 SemanticMatches, 105 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1394 ImplicationChecksByTransitivity, 18.7s TimeCoverageRelationStatistics Valid=566, Invalid=10772, Unknown=4, NotChecked=0, Total=11342 [2025-01-08 22:20:35,012 INFO L435 NwaCegarLoop]: 16 mSDtfsCounter, 177 mSDsluCounter, 654 mSDsCounter, 0 mSdLazyCounter, 3496 mSolverCounterSat, 63 mSolverCounterUnsat, 4 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 177 SdHoareTripleChecker+Valid, 670 SdHoareTripleChecker+Invalid, 3563 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 63 IncrementalHoareTripleChecker+Valid, 3496 IncrementalHoareTripleChecker+Invalid, 4 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.3s IncrementalHoareTripleChecker+Time [2025-01-08 22:20:35,012 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [177 Valid, 670 Invalid, 3563 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [63 Valid, 3496 Invalid, 4 Unknown, 0 Unchecked, 6.3s Time] [2025-01-08 22:20:35,012 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 85 states. [2025-01-08 22:20:35,037 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 85 to 80. [2025-01-08 22:20:35,037 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 80 states, 79 states have (on average 1.0253164556962024) internal successors, (81), 79 states have internal predecessors, (81), 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 22:20:35,037 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 80 states to 80 states and 81 transitions. [2025-01-08 22:20:35,037 INFO L78 Accepts]: Start accepts. Automaton has 80 states and 81 transitions. Word has length 76 [2025-01-08 22:20:35,037 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-08 22:20:35,038 INFO L471 AbstractCegarLoop]: Abstraction has 80 states and 81 transitions. [2025-01-08 22:20:35,038 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 80 states, 80 states have (on average 2.7625) internal successors, (221), 80 states have internal predecessors, (221), 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 22:20:35,038 INFO L276 IsEmpty]: Start isEmpty. Operand 80 states and 81 transitions. [2025-01-08 22:20:35,038 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2025-01-08 22:20:35,038 INFO L210 NwaCegarLoop]: Found error trace [2025-01-08 22:20:35,038 INFO L218 NwaCegarLoop]: trace histogram [13, 13, 12, 12, 11, 11, 1, 1, 1, 1, 1, 1, 1] [2025-01-08 22:20:35,048 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Ended with exit code 0 [2025-01-08 22:20:35,239 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 25 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable24 [2025-01-08 22:20:35,239 INFO L396 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-01-08 22:20:35,239 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-08 22:20:35,240 INFO L85 PathProgramCache]: Analyzing trace with hash 123116201, now seen corresponding path program 23 times [2025-01-08 22:20:35,240 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-08 22:20:35,240 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [290960454] [2025-01-08 22:20:35,240 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2025-01-08 22:20:35,240 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-08 22:20:35,252 INFO L108 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 partitioned 79 statements into 14 equivalence classes. [2025-01-08 22:20:35,291 INFO L111 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 14 check-sat command(s) and asserted 79 of 79 statements. [2025-01-08 22:20:35,291 INFO L114 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 14 check-sat command(s) [2025-01-08 22:20:35,291 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-08 22:20:36,187 INFO L134 CoverageAnalysis]: Checked inductivity of 434 backedges. 0 proven. 434 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-08 22:20:36,187 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-08 22:20:36,187 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [290960454] [2025-01-08 22:20:36,187 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [290960454] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-08 22:20:36,187 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2029778414] [2025-01-08 22:20:36,188 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2025-01-08 22:20:36,188 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-08 22:20:36,188 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-08 22:20:36,190 INFO L229 MonitoredProcess]: Starting monitored process 26 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-01-08 22:20:36,190 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Waiting until timeout for monitored process [2025-01-08 22:20:36,293 INFO L108 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 partitioned 79 statements into 14 equivalence classes. [2025-01-08 22:20:36,696 INFO L111 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 14 check-sat command(s) and asserted 79 of 79 statements. [2025-01-08 22:20:36,697 INFO L114 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 14 check-sat command(s) [2025-01-08 22:20:36,697 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-08 22:20:36,700 INFO L256 TraceCheckSpWp]: Trace formula consists of 336 conjuncts, 61 conjuncts are in the unsatisfiable core [2025-01-08 22:20:36,701 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-08 22:20:37,438 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2025-01-08 22:20:37,516 INFO L190 IndexEqualityManager]: detected not equals via solver [2025-01-08 22:20:37,517 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 20 [2025-01-08 22:20:38,699 INFO L190 IndexEqualityManager]: detected not equals via solver [2025-01-08 22:20:38,701 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-01-08 22:20:38,701 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 30 treesize of output 10 [2025-01-08 22:20:38,754 INFO L134 CoverageAnalysis]: Checked inductivity of 434 backedges. 0 proven. 434 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-08 22:20:38,754 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-01-08 22:20:39,628 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 23 [2025-01-08 22:20:39,630 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 54 treesize of output 50 [2025-01-08 22:20:40,417 INFO L134 CoverageAnalysis]: Checked inductivity of 434 backedges. 0 proven. 434 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-08 22:20:40,417 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2029778414] provided 0 perfect and 2 imperfect interpolant sequences [2025-01-08 22:20:40,417 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-01-08 22:20:40,417 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [29, 29, 29] total 82 [2025-01-08 22:20:40,417 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1190398931] [2025-01-08 22:20:40,418 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-01-08 22:20:40,418 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 82 states [2025-01-08 22:20:40,418 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-08 22:20:40,419 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 82 interpolants. [2025-01-08 22:20:40,419 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=254, Invalid=6388, Unknown=0, NotChecked=0, Total=6642 [2025-01-08 22:20:40,423 INFO L87 Difference]: Start difference. First operand 80 states and 81 transitions. Second operand has 82 states, 82 states have (on average 2.8048780487804876) internal successors, (230), 82 states have internal predecessors, (230), 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 22:20:43,805 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-08 22:20:43,805 INFO L93 Difference]: Finished difference Result 90 states and 92 transitions. [2025-01-08 22:20:43,805 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2025-01-08 22:20:43,806 INFO L78 Accepts]: Start accepts. Automaton has has 82 states, 82 states have (on average 2.8048780487804876) internal successors, (230), 82 states have internal predecessors, (230), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 79 [2025-01-08 22:20:43,806 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-08 22:20:43,807 INFO L225 Difference]: With dead ends: 90 [2025-01-08 22:20:43,807 INFO L226 Difference]: Without dead ends: 88 [2025-01-08 22:20:43,807 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 212 GetRequests, 104 SyntacticMatches, 1 SemanticMatches, 107 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1305 ImplicationChecksByTransitivity, 5.0s TimeCoverageRelationStatistics Valid=517, Invalid=11255, Unknown=0, NotChecked=0, Total=11772 [2025-01-08 22:20:43,808 INFO L435 NwaCegarLoop]: 17 mSDtfsCounter, 152 mSDsluCounter, 758 mSDsCounter, 0 mSdLazyCounter, 3673 mSolverCounterSat, 52 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 152 SdHoareTripleChecker+Valid, 775 SdHoareTripleChecker+Invalid, 3725 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 52 IncrementalHoareTripleChecker+Valid, 3673 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2025-01-08 22:20:43,808 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [152 Valid, 775 Invalid, 3725 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [52 Valid, 3673 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2025-01-08 22:20:43,808 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 88 states. [2025-01-08 22:20:43,829 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 88 to 83. [2025-01-08 22:20:43,830 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 83 states, 82 states have (on average 1.024390243902439) internal successors, (84), 82 states have internal predecessors, (84), 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 22:20:43,830 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 83 states to 83 states and 84 transitions. [2025-01-08 22:20:43,830 INFO L78 Accepts]: Start accepts. Automaton has 83 states and 84 transitions. Word has length 79 [2025-01-08 22:20:43,830 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-08 22:20:43,830 INFO L471 AbstractCegarLoop]: Abstraction has 83 states and 84 transitions. [2025-01-08 22:20:43,830 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 82 states, 82 states have (on average 2.8048780487804876) internal successors, (230), 82 states have internal predecessors, (230), 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 22:20:43,830 INFO L276 IsEmpty]: Start isEmpty. Operand 83 states and 84 transitions. [2025-01-08 22:20:43,831 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2025-01-08 22:20:43,831 INFO L210 NwaCegarLoop]: Found error trace [2025-01-08 22:20:43,831 INFO L218 NwaCegarLoop]: trace histogram [13, 13, 13, 12, 12, 12, 1, 1, 1, 1, 1, 1, 1] [2025-01-08 22:20:43,839 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Ended with exit code 0 [2025-01-08 22:20:44,035 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 26 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable25 [2025-01-08 22:20:44,035 INFO L396 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-01-08 22:20:44,035 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-08 22:20:44,035 INFO L85 PathProgramCache]: Analyzing trace with hash -142538289, now seen corresponding path program 24 times [2025-01-08 22:20:44,035 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-08 22:20:44,036 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1971985128] [2025-01-08 22:20:44,036 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2025-01-08 22:20:44,036 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-08 22:20:44,045 INFO L108 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE partitioned 82 statements into 14 equivalence classes. [2025-01-08 22:20:44,067 INFO L111 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 14 check-sat command(s) and asserted 82 of 82 statements. [2025-01-08 22:20:44,067 INFO L114 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 14 check-sat command(s) [2025-01-08 22:20:44,067 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-08 22:20:44,922 INFO L134 CoverageAnalysis]: Checked inductivity of 469 backedges. 165 proven. 304 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-08 22:20:44,923 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-08 22:20:44,923 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1971985128] [2025-01-08 22:20:44,923 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1971985128] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-08 22:20:44,923 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [462710411] [2025-01-08 22:20:44,923 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2025-01-08 22:20:44,923 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-08 22:20:44,923 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-08 22:20:44,925 INFO L229 MonitoredProcess]: Starting monitored process 27 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-01-08 22:20:44,926 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Waiting until timeout for monitored process [2025-01-08 22:20:45,025 INFO L108 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE partitioned 82 statements into 14 equivalence classes. [2025-01-08 22:20:46,212 INFO L111 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 14 check-sat command(s) and asserted 82 of 82 statements. [2025-01-08 22:20:46,212 INFO L114 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 14 check-sat command(s) [2025-01-08 22:20:46,212 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-08 22:20:46,216 INFO L256 TraceCheckSpWp]: Trace formula consists of 346 conjuncts, 45 conjuncts are in the unsatisfiable core [2025-01-08 22:20:46,218 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-08 22:20:46,731 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 1 [2025-01-08 22:20:47,812 INFO L349 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2025-01-08 22:20:47,813 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 23 treesize of output 10 [2025-01-08 22:20:47,849 INFO L134 CoverageAnalysis]: Checked inductivity of 469 backedges. 203 proven. 266 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-08 22:20:47,850 INFO L312 TraceCheckSpWp]: Computing backward predicates...