./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/array-tiling/mbpr3.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/mbpr3.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 a50e57e46342104030586dde3ea26bc2e3984490f4fdef34fa383d24842d8980 --- Real Ultimate output --- This is Ultimate 0.3.0-?-551b009-m [2025-01-08 22:16:35,171 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-01-08 22:16:35,227 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2025-01-08 22:16:35,234 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-01-08 22:16:35,237 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-01-08 22:16:35,257 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-01-08 22:16:35,257 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-01-08 22:16:35,257 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-01-08 22:16:35,257 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-01-08 22:16:35,257 INFO L153 SettingsManager]: * Use memory slicer=true [2025-01-08 22:16:35,257 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-01-08 22:16:35,258 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-01-08 22:16:35,258 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-01-08 22:16:35,258 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-01-08 22:16:35,258 INFO L153 SettingsManager]: * Use SBE=true [2025-01-08 22:16:35,258 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-01-08 22:16:35,263 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2025-01-08 22:16:35,263 INFO L153 SettingsManager]: * sizeof long=4 [2025-01-08 22:16:35,264 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-01-08 22:16:35,264 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-01-08 22:16:35,264 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-01-08 22:16:35,264 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2025-01-08 22:16:35,264 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-01-08 22:16:35,264 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2025-01-08 22:16:35,264 INFO L153 SettingsManager]: * sizeof long double=12 [2025-01-08 22:16:35,264 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2025-01-08 22:16:35,264 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-01-08 22:16:35,264 INFO L153 SettingsManager]: * Use constant arrays=true [2025-01-08 22:16:35,264 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-01-08 22:16:35,264 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-01-08 22:16:35,264 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-01-08 22:16:35,264 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-01-08 22:16:35,264 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-01-08 22:16:35,264 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2025-01-08 22:16:35,264 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-01-08 22:16:35,264 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-01-08 22:16:35,264 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-01-08 22:16:35,264 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-01-08 22:16:35,264 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-01-08 22:16:35,264 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-01-08 22:16:35,264 INFO L153 SettingsManager]: * Compute procedure contracts=false [2025-01-08 22:16:35,264 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2025-01-08 22:16:35,265 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-01-08 22:16:35,265 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2025-01-08 22:16:35,265 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2025-01-08 22:16:35,265 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-01-08 22:16:35,265 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-01-08 22:16:35,265 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-01-08 22:16:35,265 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 -> a50e57e46342104030586dde3ea26bc2e3984490f4fdef34fa383d24842d8980 [2025-01-08 22:16:35,492 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-01-08 22:16:35,498 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-01-08 22:16:35,500 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-01-08 22:16:35,501 INFO L270 PluginConnector]: Initializing CDTParser... [2025-01-08 22:16:35,501 INFO L274 PluginConnector]: CDTParser initialized [2025-01-08 22:16:35,502 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/array-tiling/mbpr3.c [2025-01-08 22:16:36,623 INFO L533 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/631fe39a0/e9368ff0ddea4eb7b9291c59c439e3a4/FLAG10c6d4675 [2025-01-08 22:16:36,892 INFO L384 CDTParser]: Found 1 translation units. [2025-01-08 22:16:36,893 INFO L180 CDTParser]: Scanning /storage/repos/ultimate-jdk21/releaseScripts/default/sv-benchmarks/c/array-tiling/mbpr3.c [2025-01-08 22:16:36,899 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/631fe39a0/e9368ff0ddea4eb7b9291c59c439e3a4/FLAG10c6d4675 [2025-01-08 22:16:37,194 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/631fe39a0/e9368ff0ddea4eb7b9291c59c439e3a4 [2025-01-08 22:16:37,198 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-01-08 22:16:37,200 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2025-01-08 22:16:37,204 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-01-08 22:16:37,204 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-01-08 22:16:37,207 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-01-08 22:16:37,211 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.01 10:16:37" (1/1) ... [2025-01-08 22:16:37,212 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@223692e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.01 10:16:37, skipping insertion in model container [2025-01-08 22:16:37,212 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.01 10:16:37" (1/1) ... [2025-01-08 22:16:37,228 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-01-08 22:16:37,337 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/mbpr3.c[396,409] [2025-01-08 22:16:37,353 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-01-08 22:16:37,359 INFO L200 MainTranslator]: Completed pre-run [2025-01-08 22:16:37,367 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/mbpr3.c[396,409] [2025-01-08 22:16:37,376 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-01-08 22:16:37,386 INFO L204 MainTranslator]: Completed translation [2025-01-08 22:16:37,386 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.01 10:16:37 WrapperNode [2025-01-08 22:16:37,386 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-01-08 22:16:37,387 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-01-08 22:16:37,387 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-01-08 22:16:37,387 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-01-08 22:16:37,391 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.01 10:16:37" (1/1) ... [2025-01-08 22:16:37,396 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.01 10:16:37" (1/1) ... [2025-01-08 22:16:37,409 INFO L138 Inliner]: procedures = 15, calls = 40, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 104 [2025-01-08 22:16:37,409 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-01-08 22:16:37,410 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-01-08 22:16:37,410 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-01-08 22:16:37,410 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-01-08 22:16:37,416 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.01 10:16:37" (1/1) ... [2025-01-08 22:16:37,417 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.01 10:16:37" (1/1) ... [2025-01-08 22:16:37,418 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.01 10:16:37" (1/1) ... [2025-01-08 22:16:37,427 INFO L175 MemorySlicer]: Split 30 memory accesses to 3 slices as follows [2, 8, 20]. 67 percent of accesses are in the largest equivalence class. The 10 initializations are split as follows [2, 8, 0]. The 12 writes are split as follows [0, 0, 12]. [2025-01-08 22:16:37,428 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.01 10:16:37" (1/1) ... [2025-01-08 22:16:37,428 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.01 10:16:37" (1/1) ... [2025-01-08 22:16:37,432 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.01 10:16:37" (1/1) ... [2025-01-08 22:16:37,432 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.01 10:16:37" (1/1) ... [2025-01-08 22:16:37,434 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.01 10:16:37" (1/1) ... [2025-01-08 22:16:37,435 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.01 10:16:37" (1/1) ... [2025-01-08 22:16:37,436 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.01 10:16:37" (1/1) ... [2025-01-08 22:16:37,437 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-01-08 22:16:37,437 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2025-01-08 22:16:37,437 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2025-01-08 22:16:37,437 INFO L274 PluginConnector]: RCFGBuilder initialized [2025-01-08 22:16:37,438 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.01 10:16:37" (1/1) ... [2025-01-08 22:16:37,442 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-01-08 22:16:37,451 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-08 22:16:37,466 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 22:16:37,475 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 22:16:37,490 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2025-01-08 22:16:37,491 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2025-01-08 22:16:37,491 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2025-01-08 22:16:37,491 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2025-01-08 22:16:37,491 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2025-01-08 22:16:37,491 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2025-01-08 22:16:37,491 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2025-01-08 22:16:37,491 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2025-01-08 22:16:37,491 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-01-08 22:16:37,492 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-01-08 22:16:37,492 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2025-01-08 22:16:37,492 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2025-01-08 22:16:37,492 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2025-01-08 22:16:37,492 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2025-01-08 22:16:37,542 INFO L234 CfgBuilder]: Building ICFG [2025-01-08 22:16:37,544 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2025-01-08 22:16:37,688 INFO L? ?]: Removed 10 outVars from TransFormulas that were not future-live. [2025-01-08 22:16:37,688 INFO L283 CfgBuilder]: Performing block encoding [2025-01-08 22:16:37,694 INFO L307 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-01-08 22:16:37,694 INFO L312 CfgBuilder]: Removed 0 assume(true) statements. [2025-01-08 22:16:37,695 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 08.01 10:16:37 BoogieIcfgContainer [2025-01-08 22:16:37,695 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2025-01-08 22:16:37,696 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2025-01-08 22:16:37,696 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2025-01-08 22:16:37,699 INFO L274 PluginConnector]: TraceAbstraction initialized [2025-01-08 22:16:37,699 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 08.01 10:16:37" (1/3) ... [2025-01-08 22:16:37,700 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@57292821 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.01 10:16:37, skipping insertion in model container [2025-01-08 22:16:37,700 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.01 10:16:37" (2/3) ... [2025-01-08 22:16:37,700 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@57292821 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.01 10:16:37, skipping insertion in model container [2025-01-08 22:16:37,700 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 08.01 10:16:37" (3/3) ... [2025-01-08 22:16:37,701 INFO L128 eAbstractionObserver]: Analyzing ICFG mbpr3.c [2025-01-08 22:16:37,709 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2025-01-08 22:16:37,710 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG mbpr3.c that has 1 procedures, 26 locations, 1 initial locations, 4 loop locations, and 1 error locations. [2025-01-08 22:16:37,741 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-01-08 22:16:37,748 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;@1d4770f3, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-01-08 22:16:37,749 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2025-01-08 22:16:37,751 INFO L276 IsEmpty]: Start isEmpty. Operand has 26 states, 24 states have (on average 1.5416666666666667) internal successors, (37), 25 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-08 22:16:37,754 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2025-01-08 22:16:37,754 INFO L210 NwaCegarLoop]: Found error trace [2025-01-08 22:16:37,755 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-08 22:16:37,755 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-01-08 22:16:37,758 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-08 22:16:37,758 INFO L85 PathProgramCache]: Analyzing trace with hash -526813503, now seen corresponding path program 1 times [2025-01-08 22:16:37,763 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-08 22:16:37,763 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [459291232] [2025-01-08 22:16:37,763 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-08 22:16:37,764 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-08 22:16:37,819 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 14 statements into 1 equivalence classes. [2025-01-08 22:16:37,832 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 14 of 14 statements. [2025-01-08 22:16:37,833 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-08 22:16:37,833 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-08 22:16:37,870 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 22:16:37,870 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-08 22:16:37,870 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [459291232] [2025-01-08 22:16:37,871 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [459291232] provided 1 perfect and 0 imperfect interpolant sequences [2025-01-08 22:16:37,871 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-01-08 22:16:37,871 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-01-08 22:16:37,872 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [20661828] [2025-01-08 22:16:37,872 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-01-08 22:16:37,874 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2025-01-08 22:16:37,874 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-08 22:16:37,885 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2025-01-08 22:16:37,886 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2025-01-08 22:16:37,887 INFO L87 Difference]: Start difference. First operand has 26 states, 24 states have (on average 1.5416666666666667) internal successors, (37), 25 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 2 states have (on average 7.0) internal successors, (14), 2 states have internal predecessors, (14), 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 22:16:37,895 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-08 22:16:37,896 INFO L93 Difference]: Finished difference Result 47 states and 66 transitions. [2025-01-08 22:16:37,896 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2025-01-08 22:16:37,897 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 7.0) internal successors, (14), 2 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 14 [2025-01-08 22:16:37,897 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-08 22:16:37,901 INFO L225 Difference]: With dead ends: 47 [2025-01-08 22:16:37,901 INFO L226 Difference]: Without dead ends: 22 [2025-01-08 22:16:37,903 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2025-01-08 22:16:37,905 INFO L435 NwaCegarLoop]: 35 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 35 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-01-08 22:16:37,906 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 35 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-01-08 22:16:37,914 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22 states. [2025-01-08 22:16:37,920 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22 to 22. [2025-01-08 22:16:37,921 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22 states, 21 states have (on average 1.380952380952381) internal successors, (29), 21 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 22:16:37,923 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 29 transitions. [2025-01-08 22:16:37,925 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 29 transitions. Word has length 14 [2025-01-08 22:16:37,925 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-08 22:16:37,925 INFO L471 AbstractCegarLoop]: Abstraction has 22 states and 29 transitions. [2025-01-08 22:16:37,925 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 7.0) internal successors, (14), 2 states have internal predecessors, (14), 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 22:16:37,925 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 29 transitions. [2025-01-08 22:16:37,926 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2025-01-08 22:16:37,926 INFO L210 NwaCegarLoop]: Found error trace [2025-01-08 22:16:37,926 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-08 22:16:37,926 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2025-01-08 22:16:37,926 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-01-08 22:16:37,927 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-08 22:16:37,927 INFO L85 PathProgramCache]: Analyzing trace with hash -919840513, now seen corresponding path program 1 times [2025-01-08 22:16:37,927 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-08 22:16:37,927 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1295174462] [2025-01-08 22:16:37,927 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-08 22:16:37,927 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-08 22:16:37,936 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 14 statements into 1 equivalence classes. [2025-01-08 22:16:37,952 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 14 of 14 statements. [2025-01-08 22:16:37,953 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-08 22:16:37,953 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-08 22:16:38,184 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 22:16:38,184 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-08 22:16:38,184 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1295174462] [2025-01-08 22:16:38,184 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1295174462] provided 1 perfect and 0 imperfect interpolant sequences [2025-01-08 22:16:38,184 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-01-08 22:16:38,184 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2025-01-08 22:16:38,185 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1971545531] [2025-01-08 22:16:38,185 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-01-08 22:16:38,186 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-01-08 22:16:38,187 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-08 22:16:38,187 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-01-08 22:16:38,187 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2025-01-08 22:16:38,187 INFO L87 Difference]: Start difference. First operand 22 states and 29 transitions. Second operand has 5 states, 5 states have (on average 2.8) internal successors, (14), 5 states have internal predecessors, (14), 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 22:16:38,256 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-08 22:16:38,256 INFO L93 Difference]: Finished difference Result 44 states and 62 transitions. [2025-01-08 22:16:38,256 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-01-08 22:16:38,256 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.8) internal successors, (14), 5 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 14 [2025-01-08 22:16:38,257 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-08 22:16:38,257 INFO L225 Difference]: With dead ends: 44 [2025-01-08 22:16:38,257 INFO L226 Difference]: Without dead ends: 31 [2025-01-08 22:16:38,257 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2025-01-08 22:16:38,258 INFO L435 NwaCegarLoop]: 12 mSDtfsCounter, 79 mSDsluCounter, 6 mSDsCounter, 0 mSdLazyCounter, 37 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 79 SdHoareTripleChecker+Valid, 18 SdHoareTripleChecker+Invalid, 41 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 37 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-01-08 22:16:38,258 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [79 Valid, 18 Invalid, 41 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 37 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-01-08 22:16:38,258 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states. [2025-01-08 22:16:38,261 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 25. [2025-01-08 22:16:38,262 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25 states, 24 states have (on average 1.3333333333333333) internal successors, (32), 24 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 22:16:38,262 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 32 transitions. [2025-01-08 22:16:38,262 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 32 transitions. Word has length 14 [2025-01-08 22:16:38,262 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-08 22:16:38,262 INFO L471 AbstractCegarLoop]: Abstraction has 25 states and 32 transitions. [2025-01-08 22:16:38,262 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.8) internal successors, (14), 5 states have internal predecessors, (14), 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 22:16:38,263 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 32 transitions. [2025-01-08 22:16:38,263 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2025-01-08 22:16:38,263 INFO L210 NwaCegarLoop]: Found error trace [2025-01-08 22:16:38,263 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-08 22:16:38,263 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2025-01-08 22:16:38,263 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-01-08 22:16:38,264 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-08 22:16:38,264 INFO L85 PathProgramCache]: Analyzing trace with hash 935505735, now seen corresponding path program 1 times [2025-01-08 22:16:38,264 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-08 22:16:38,264 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [56480650] [2025-01-08 22:16:38,264 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-08 22:16:38,264 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-08 22:16:38,277 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 23 statements into 1 equivalence classes. [2025-01-08 22:16:38,294 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 23 of 23 statements. [2025-01-08 22:16:38,294 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-08 22:16:38,294 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-08 22:16:38,367 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2025-01-08 22:16:38,368 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-08 22:16:38,368 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [56480650] [2025-01-08 22:16:38,368 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [56480650] provided 1 perfect and 0 imperfect interpolant sequences [2025-01-08 22:16:38,368 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-01-08 22:16:38,368 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-01-08 22:16:38,368 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1489258893] [2025-01-08 22:16:38,368 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-01-08 22:16:38,368 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-01-08 22:16:38,369 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-08 22:16:38,369 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-01-08 22:16:38,369 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-01-08 22:16:38,369 INFO L87 Difference]: Start difference. First operand 25 states and 32 transitions. Second operand has 3 states, 3 states have (on average 7.666666666666667) internal successors, (23), 3 states have internal predecessors, (23), 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 22:16:38,380 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-08 22:16:38,381 INFO L93 Difference]: Finished difference Result 35 states and 45 transitions. [2025-01-08 22:16:38,381 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-01-08 22:16:38,381 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 7.666666666666667) internal successors, (23), 3 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 23 [2025-01-08 22:16:38,381 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-08 22:16:38,381 INFO L225 Difference]: With dead ends: 35 [2025-01-08 22:16:38,381 INFO L226 Difference]: Without dead ends: 25 [2025-01-08 22:16:38,382 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-01-08 22:16:38,382 INFO L435 NwaCegarLoop]: 22 mSDtfsCounter, 13 mSDsluCounter, 1 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 23 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-01-08 22:16:38,382 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [13 Valid, 23 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-01-08 22:16:38,383 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25 states. [2025-01-08 22:16:38,385 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25 to 25. [2025-01-08 22:16:38,385 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25 states, 24 states have (on average 1.2916666666666667) internal successors, (31), 24 states have internal predecessors, (31), 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 22:16:38,386 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 31 transitions. [2025-01-08 22:16:38,386 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 31 transitions. Word has length 23 [2025-01-08 22:16:38,386 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-08 22:16:38,386 INFO L471 AbstractCegarLoop]: Abstraction has 25 states and 31 transitions. [2025-01-08 22:16:38,386 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 7.666666666666667) internal successors, (23), 3 states have internal predecessors, (23), 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 22:16:38,386 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 31 transitions. [2025-01-08 22:16:38,390 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2025-01-08 22:16:38,390 INFO L210 NwaCegarLoop]: Found error trace [2025-01-08 22:16:38,390 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-08 22:16:38,390 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2025-01-08 22:16:38,390 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-01-08 22:16:38,391 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-08 22:16:38,391 INFO L85 PathProgramCache]: Analyzing trace with hash 126159109, now seen corresponding path program 1 times [2025-01-08 22:16:38,391 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-08 22:16:38,391 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [76499450] [2025-01-08 22:16:38,391 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-08 22:16:38,391 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-08 22:16:38,399 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 23 statements into 1 equivalence classes. [2025-01-08 22:16:38,417 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 23 of 23 statements. [2025-01-08 22:16:38,418 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-08 22:16:38,418 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-08 22:16:39,142 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-01-08 22:16:39,143 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-08 22:16:39,143 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [76499450] [2025-01-08 22:16:39,143 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [76499450] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-08 22:16:39,143 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1084954952] [2025-01-08 22:16:39,143 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-08 22:16:39,143 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-08 22:16:39,144 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-08 22:16:39,149 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 22:16:39,152 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 22:16:39,203 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 23 statements into 1 equivalence classes. [2025-01-08 22:16:39,222 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 23 of 23 statements. [2025-01-08 22:16:39,223 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-08 22:16:39,223 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-08 22:16:39,225 INFO L256 TraceCheckSpWp]: Trace formula consists of 137 conjuncts, 28 conjuncts are in the unsatisfiable core [2025-01-08 22:16:39,230 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-08 22:16:39,368 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 22:16:39,405 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-01-08 22:16:39,405 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 18 [2025-01-08 22:16:39,449 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 22:16:39,465 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-01-08 22:16:39,465 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 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 18 [2025-01-08 22:16:39,500 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 22:16:39,535 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-01-08 22:16:39,536 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 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 28 [2025-01-08 22:16:39,605 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-01-08 22:16:39,605 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 22 treesize of output 10 [2025-01-08 22:16:39,624 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-08 22:16:39,624 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-01-08 22:16:39,742 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 17 treesize of output 15 [2025-01-08 22:16:39,746 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 22 treesize of output 20 [2025-01-08 22:16:39,803 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2025-01-08 22:16:39,804 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1084954952] provided 0 perfect and 2 imperfect interpolant sequences [2025-01-08 22:16:39,804 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-01-08 22:16:39,804 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 10, 7] total 20 [2025-01-08 22:16:39,804 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1917624157] [2025-01-08 22:16:39,804 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-01-08 22:16:39,804 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2025-01-08 22:16:39,804 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-08 22:16:39,805 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2025-01-08 22:16:39,805 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=73, Invalid=307, Unknown=0, NotChecked=0, Total=380 [2025-01-08 22:16:39,805 INFO L87 Difference]: Start difference. First operand 25 states and 31 transitions. Second operand has 20 states, 20 states have (on average 2.9) internal successors, (58), 20 states have internal predecessors, (58), 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 22:16:40,091 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-08 22:16:40,091 INFO L93 Difference]: Finished difference Result 66 states and 82 transitions. [2025-01-08 22:16:40,091 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2025-01-08 22:16:40,092 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 2.9) internal successors, (58), 20 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 23 [2025-01-08 22:16:40,092 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-08 22:16:40,092 INFO L225 Difference]: With dead ends: 66 [2025-01-08 22:16:40,092 INFO L226 Difference]: Without dead ends: 48 [2025-01-08 22:16:40,093 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 67 GetRequests, 37 SyntacticMatches, 3 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 192 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=204, Invalid=608, Unknown=0, NotChecked=0, Total=812 [2025-01-08 22:16:40,093 INFO L435 NwaCegarLoop]: 19 mSDtfsCounter, 135 mSDsluCounter, 81 mSDsCounter, 0 mSdLazyCounter, 239 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 135 SdHoareTripleChecker+Valid, 100 SdHoareTripleChecker+Invalid, 263 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 239 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-01-08 22:16:40,094 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [135 Valid, 100 Invalid, 263 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 239 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-01-08 22:16:40,094 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48 states. [2025-01-08 22:16:40,097 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48 to 27. [2025-01-08 22:16:40,097 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27 states, 26 states have (on average 1.2307692307692308) internal successors, (32), 26 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 22:16:40,098 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 32 transitions. [2025-01-08 22:16:40,098 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 32 transitions. Word has length 23 [2025-01-08 22:16:40,098 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-08 22:16:40,098 INFO L471 AbstractCegarLoop]: Abstraction has 27 states and 32 transitions. [2025-01-08 22:16:40,098 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 2.9) internal successors, (58), 20 states have internal predecessors, (58), 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 22:16:40,098 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 32 transitions. [2025-01-08 22:16:40,099 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2025-01-08 22:16:40,099 INFO L210 NwaCegarLoop]: Found error trace [2025-01-08 22:16:40,099 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-08 22:16:40,108 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 22:16:40,303 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-08 22:16:40,303 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-01-08 22:16:40,304 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-08 22:16:40,304 INFO L85 PathProgramCache]: Analyzing trace with hash 126099527, now seen corresponding path program 1 times [2025-01-08 22:16:40,304 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-08 22:16:40,304 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1386838087] [2025-01-08 22:16:40,304 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-08 22:16:40,304 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-08 22:16:40,312 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 23 statements into 1 equivalence classes. [2025-01-08 22:16:40,318 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 23 of 23 statements. [2025-01-08 22:16:40,318 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-08 22:16:40,318 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-08 22:16:40,365 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2025-01-08 22:16:40,365 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-08 22:16:40,365 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1386838087] [2025-01-08 22:16:40,365 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1386838087] provided 1 perfect and 0 imperfect interpolant sequences [2025-01-08 22:16:40,365 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-01-08 22:16:40,365 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-01-08 22:16:40,365 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [138724276] [2025-01-08 22:16:40,366 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-01-08 22:16:40,366 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-01-08 22:16:40,366 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-08 22:16:40,366 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-01-08 22:16:40,366 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-01-08 22:16:40,366 INFO L87 Difference]: Start difference. First operand 27 states and 32 transitions. Second operand has 4 states, 4 states have (on average 5.75) internal successors, (23), 4 states have internal predecessors, (23), 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 22:16:40,378 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-08 22:16:40,379 INFO L93 Difference]: Finished difference Result 31 states and 36 transitions. [2025-01-08 22:16:40,379 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-01-08 22:16:40,379 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 5.75) internal successors, (23), 4 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 23 [2025-01-08 22:16:40,379 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-08 22:16:40,380 INFO L225 Difference]: With dead ends: 31 [2025-01-08 22:16:40,380 INFO L226 Difference]: Without dead ends: 29 [2025-01-08 22:16:40,380 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-01-08 22:16:40,380 INFO L435 NwaCegarLoop]: 25 mSDtfsCounter, 0 mSDsluCounter, 43 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 68 SdHoareTripleChecker+Invalid, 12 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-01-08 22:16:40,380 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 68 Invalid, 12 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-01-08 22:16:40,381 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2025-01-08 22:16:40,384 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 29. [2025-01-08 22:16:40,384 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 29 states, 28 states have (on average 1.2142857142857142) internal successors, (34), 28 states have internal predecessors, (34), 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 22:16:40,384 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 34 transitions. [2025-01-08 22:16:40,384 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 34 transitions. Word has length 23 [2025-01-08 22:16:40,384 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-08 22:16:40,385 INFO L471 AbstractCegarLoop]: Abstraction has 29 states and 34 transitions. [2025-01-08 22:16:40,385 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 5.75) internal successors, (23), 4 states have internal predecessors, (23), 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 22:16:40,385 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 34 transitions. [2025-01-08 22:16:40,385 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2025-01-08 22:16:40,385 INFO L210 NwaCegarLoop]: Found error trace [2025-01-08 22:16:40,385 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-08 22:16:40,385 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2025-01-08 22:16:40,385 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-01-08 22:16:40,386 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-08 22:16:40,386 INFO L85 PathProgramCache]: Analyzing trace with hash 866871833, now seen corresponding path program 1 times [2025-01-08 22:16:40,386 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-08 22:16:40,386 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1332749921] [2025-01-08 22:16:40,386 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-08 22:16:40,386 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-08 22:16:40,394 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 28 statements into 1 equivalence classes. [2025-01-08 22:16:40,402 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 28 of 28 statements. [2025-01-08 22:16:40,402 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-08 22:16:40,402 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-08 22:16:40,861 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 2 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-01-08 22:16:40,861 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-08 22:16:40,861 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1332749921] [2025-01-08 22:16:40,861 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1332749921] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-08 22:16:40,861 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2028167524] [2025-01-08 22:16:40,861 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-08 22:16:40,861 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-08 22:16:40,862 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-08 22:16:40,865 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 22:16:40,872 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 22:16:40,907 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 28 statements into 1 equivalence classes. [2025-01-08 22:16:40,924 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 28 of 28 statements. [2025-01-08 22:16:40,924 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-08 22:16:40,924 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-08 22:16:40,925 INFO L256 TraceCheckSpWp]: Trace formula consists of 149 conjuncts, 24 conjuncts are in the unsatisfiable core [2025-01-08 22:16:40,927 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-08 22:16:40,994 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 22:16:41,013 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-01-08 22:16:41,013 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 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 30 treesize of output 25 [2025-01-08 22:16:41,047 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 22:16:41,076 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-01-08 22:16:41,077 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 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 28 [2025-01-08 22:16:41,169 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-01-08 22:16:41,170 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 22 treesize of output 10 [2025-01-08 22:16:41,184 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 2 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-01-08 22:16:41,184 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-01-08 22:16:41,274 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 19 treesize of output 17 [2025-01-08 22:16:41,276 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 22:16:41,316 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 2 proven. 3 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2025-01-08 22:16:41,316 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2028167524] provided 0 perfect and 2 imperfect interpolant sequences [2025-01-08 22:16:41,317 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-01-08 22:16:41,317 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 10, 8] total 21 [2025-01-08 22:16:41,317 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [539192108] [2025-01-08 22:16:41,317 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-01-08 22:16:41,317 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2025-01-08 22:16:41,317 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-08 22:16:41,318 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2025-01-08 22:16:41,318 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=342, Unknown=0, NotChecked=0, Total=420 [2025-01-08 22:16:41,318 INFO L87 Difference]: Start difference. First operand 29 states and 34 transitions. Second operand has 21 states, 21 states have (on average 3.4761904761904763) internal successors, (73), 21 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 22:16:41,524 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-08 22:16:41,524 INFO L93 Difference]: Finished difference Result 61 states and 72 transitions. [2025-01-08 22:16:41,524 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2025-01-08 22:16:41,524 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 3.4761904761904763) internal successors, (73), 21 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) Word has length 28 [2025-01-08 22:16:41,524 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-08 22:16:41,529 INFO L225 Difference]: With dead ends: 61 [2025-01-08 22:16:41,529 INFO L226 Difference]: Without dead ends: 43 [2025-01-08 22:16:41,529 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 74 GetRequests, 45 SyntacticMatches, 2 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 185 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=198, Invalid=614, Unknown=0, NotChecked=0, Total=812 [2025-01-08 22:16:41,530 INFO L435 NwaCegarLoop]: 16 mSDtfsCounter, 115 mSDsluCounter, 68 mSDsCounter, 0 mSdLazyCounter, 163 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 115 SdHoareTripleChecker+Valid, 84 SdHoareTripleChecker+Invalid, 181 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 163 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-01-08 22:16:41,530 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [115 Valid, 84 Invalid, 181 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 163 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-01-08 22:16:41,530 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43 states. [2025-01-08 22:16:41,533 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43 to 34. [2025-01-08 22:16:41,533 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 34 states, 33 states have (on average 1.1515151515151516) internal successors, (38), 33 states have internal predecessors, (38), 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 22:16:41,533 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 38 transitions. [2025-01-08 22:16:41,533 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 38 transitions. Word has length 28 [2025-01-08 22:16:41,533 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-08 22:16:41,533 INFO L471 AbstractCegarLoop]: Abstraction has 34 states and 38 transitions. [2025-01-08 22:16:41,533 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 3.4761904761904763) internal successors, (73), 21 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 22:16:41,537 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 38 transitions. [2025-01-08 22:16:41,538 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2025-01-08 22:16:41,538 INFO L210 NwaCegarLoop]: Found error trace [2025-01-08 22:16:41,538 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-08 22:16:41,544 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 22:16:41,738 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,3 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-08 22:16:41,739 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-01-08 22:16:41,739 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-08 22:16:41,739 INFO L85 PathProgramCache]: Analyzing trace with hash 1467651461, now seen corresponding path program 2 times [2025-01-08 22:16:41,739 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-08 22:16:41,739 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1290633587] [2025-01-08 22:16:41,739 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-01-08 22:16:41,739 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-08 22:16:41,748 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 33 statements into 2 equivalence classes. [2025-01-08 22:16:41,759 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 33 of 33 statements. [2025-01-08 22:16:41,759 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-01-08 22:16:41,759 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-08 22:16:42,385 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-01-08 22:16:42,385 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-08 22:16:42,385 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1290633587] [2025-01-08 22:16:42,385 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1290633587] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-08 22:16:42,385 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [602725197] [2025-01-08 22:16:42,385 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-01-08 22:16:42,385 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-08 22:16:42,385 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-08 22:16:42,389 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 22:16:42,391 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 22:16:42,428 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 33 statements into 2 equivalence classes. [2025-01-08 22:16:42,447 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 33 of 33 statements. [2025-01-08 22:16:42,447 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-01-08 22:16:42,447 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-08 22:16:42,448 INFO L256 TraceCheckSpWp]: Trace formula consists of 161 conjuncts, 30 conjuncts are in the unsatisfiable core [2025-01-08 22:16:42,449 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-08 22:16:42,486 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 22:16:42,510 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-01-08 22:16:42,510 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 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 30 treesize of output 25 [2025-01-08 22:16:42,640 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2025-01-08 22:16:42,640 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-01-08 22:16:42,789 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 17 treesize of output 15 [2025-01-08 22:16:42,791 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 16 treesize of output 12 [2025-01-08 22:16:42,808 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2025-01-08 22:16:42,808 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [602725197] provided 0 perfect and 2 imperfect interpolant sequences [2025-01-08 22:16:42,808 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-01-08 22:16:42,808 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 12, 11] total 31 [2025-01-08 22:16:42,808 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [667238279] [2025-01-08 22:16:42,808 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-01-08 22:16:42,809 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2025-01-08 22:16:42,809 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-08 22:16:42,809 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2025-01-08 22:16:42,810 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=155, Invalid=775, Unknown=0, NotChecked=0, Total=930 [2025-01-08 22:16:42,810 INFO L87 Difference]: Start difference. First operand 34 states and 38 transitions. Second operand has 31 states, 31 states have (on average 2.903225806451613) internal successors, (90), 31 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 22:16:43,545 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-08 22:16:43,546 INFO L93 Difference]: Finished difference Result 107 states and 123 transitions. [2025-01-08 22:16:43,546 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2025-01-08 22:16:43,546 INFO L78 Accepts]: Start accepts. Automaton has has 31 states, 31 states have (on average 2.903225806451613) internal successors, (90), 31 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) Word has length 33 [2025-01-08 22:16:43,547 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-08 22:16:43,547 INFO L225 Difference]: With dead ends: 107 [2025-01-08 22:16:43,547 INFO L226 Difference]: Without dead ends: 59 [2025-01-08 22:16:43,549 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 110 GetRequests, 52 SyntacticMatches, 1 SemanticMatches, 57 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 935 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=648, Invalid=2774, Unknown=0, NotChecked=0, Total=3422 [2025-01-08 22:16:43,549 INFO L435 NwaCegarLoop]: 10 mSDtfsCounter, 228 mSDsluCounter, 96 mSDsCounter, 0 mSdLazyCounter, 457 mSolverCounterSat, 41 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 228 SdHoareTripleChecker+Valid, 106 SdHoareTripleChecker+Invalid, 498 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 41 IncrementalHoareTripleChecker+Valid, 457 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2025-01-08 22:16:43,550 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [228 Valid, 106 Invalid, 498 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [41 Valid, 457 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2025-01-08 22:16:43,550 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59 states. [2025-01-08 22:16:43,554 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59 to 48. [2025-01-08 22:16:43,554 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 48 states, 47 states have (on average 1.127659574468085) internal successors, (53), 47 states have internal predecessors, (53), 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 22:16:43,554 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48 states to 48 states and 53 transitions. [2025-01-08 22:16:43,554 INFO L78 Accepts]: Start accepts. Automaton has 48 states and 53 transitions. Word has length 33 [2025-01-08 22:16:43,554 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-08 22:16:43,555 INFO L471 AbstractCegarLoop]: Abstraction has 48 states and 53 transitions. [2025-01-08 22:16:43,555 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 31 states have (on average 2.903225806451613) internal successors, (90), 31 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 22:16:43,555 INFO L276 IsEmpty]: Start isEmpty. Operand 48 states and 53 transitions. [2025-01-08 22:16:43,555 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2025-01-08 22:16:43,555 INFO L210 NwaCegarLoop]: Found error trace [2025-01-08 22:16:43,555 INFO L218 NwaCegarLoop]: trace histogram [4, 4, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-08 22:16:43,562 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 22:16:43,760 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,4 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-08 22:16:43,760 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-01-08 22:16:43,760 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-08 22:16:43,760 INFO L85 PathProgramCache]: Analyzing trace with hash -565695327, now seen corresponding path program 3 times [2025-01-08 22:16:43,761 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-08 22:16:43,761 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1751810710] [2025-01-08 22:16:43,761 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-01-08 22:16:43,761 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-08 22:16:43,774 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 47 statements into 4 equivalence classes. [2025-01-08 22:16:43,802 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) and asserted 47 of 47 statements. [2025-01-08 22:16:43,802 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2025-01-08 22:16:43,802 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-08 22:16:44,593 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 6 proven. 31 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2025-01-08 22:16:44,594 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-08 22:16:44,594 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1751810710] [2025-01-08 22:16:44,594 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1751810710] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-08 22:16:44,594 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [559667603] [2025-01-08 22:16:44,594 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-01-08 22:16:44,594 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-08 22:16:44,594 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-08 22:16:44,596 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 22:16:44,598 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 22:16:44,634 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 47 statements into 4 equivalence classes. [2025-01-08 22:16:44,701 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) and asserted 47 of 47 statements. [2025-01-08 22:16:44,701 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2025-01-08 22:16:44,701 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-08 22:16:44,702 INFO L256 TraceCheckSpWp]: Trace formula consists of 218 conjuncts, 47 conjuncts are in the unsatisfiable core [2025-01-08 22:16:44,705 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-08 22:16:44,776 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 22:16:44,797 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-01-08 22:16:44,797 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 18 [2025-01-08 22:16:44,840 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 22:16:44,856 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-01-08 22:16:44,856 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 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 30 treesize of output 25 [2025-01-08 22:16:44,868 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 22:16:44,880 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-01-08 22:16:44,881 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 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 18 [2025-01-08 22:16:44,898 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 22:16:44,933 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-01-08 22:16:44,933 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 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 37 treesize of output 35 [2025-01-08 22:16:44,964 INFO L190 IndexEqualityManager]: detected not equals via solver [2025-01-08 22:16:44,966 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-01-08 22:16:44,966 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 32 [2025-01-08 22:16:45,004 INFO L190 IndexEqualityManager]: detected not equals via solver [2025-01-08 22:16:45,013 INFO L349 Elim1Store]: treesize reduction 25, result has 21.9 percent of original size [2025-01-08 22:16:45,013 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 9 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 11 case distinctions, treesize of input 64 treesize of output 57 [2025-01-08 22:16:45,384 INFO L190 IndexEqualityManager]: detected not equals via solver [2025-01-08 22:16:45,385 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-01-08 22:16:45,386 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 33 treesize of output 13 [2025-01-08 22:16:45,405 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 6 proven. 36 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-08 22:16:45,405 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-01-08 22:16:45,623 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 19 treesize of output 17 [2025-01-08 22:16:45,628 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 22:16:45,697 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 6 proven. 26 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2025-01-08 22:16:45,697 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [559667603] provided 0 perfect and 2 imperfect interpolant sequences [2025-01-08 22:16:45,697 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-01-08 22:16:45,697 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 17, 11] total 34 [2025-01-08 22:16:45,698 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [223204158] [2025-01-08 22:16:45,698 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-01-08 22:16:45,698 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2025-01-08 22:16:45,698 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-08 22:16:45,699 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2025-01-08 22:16:45,699 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=147, Invalid=975, Unknown=0, NotChecked=0, Total=1122 [2025-01-08 22:16:45,699 INFO L87 Difference]: Start difference. First operand 48 states and 53 transitions. Second operand has 34 states, 34 states have (on average 3.5588235294117645) internal successors, (121), 34 states have internal predecessors, (121), 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 22:16:46,915 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-08 22:16:46,915 INFO L93 Difference]: Finished difference Result 104 states and 120 transitions. [2025-01-08 22:16:46,916 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2025-01-08 22:16:46,916 INFO L78 Accepts]: Start accepts. Automaton has has 34 states, 34 states have (on average 3.5588235294117645) internal successors, (121), 34 states have internal predecessors, (121), 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 47 [2025-01-08 22:16:46,916 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-08 22:16:46,917 INFO L225 Difference]: With dead ends: 104 [2025-01-08 22:16:46,917 INFO L226 Difference]: Without dead ends: 95 [2025-01-08 22:16:46,919 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 148 GetRequests, 76 SyntacticMatches, 6 SemanticMatches, 66 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1285 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=746, Invalid=3810, Unknown=0, NotChecked=0, Total=4556 [2025-01-08 22:16:46,919 INFO L435 NwaCegarLoop]: 15 mSDtfsCounter, 234 mSDsluCounter, 155 mSDsCounter, 0 mSdLazyCounter, 775 mSolverCounterSat, 113 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 234 SdHoareTripleChecker+Valid, 170 SdHoareTripleChecker+Invalid, 888 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 113 IncrementalHoareTripleChecker+Valid, 775 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2025-01-08 22:16:46,920 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [234 Valid, 170 Invalid, 888 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [113 Valid, 775 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2025-01-08 22:16:46,920 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 95 states. [2025-01-08 22:16:46,927 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 95 to 53. [2025-01-08 22:16:46,927 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 53 states, 52 states have (on average 1.1153846153846154) internal successors, (58), 52 states have internal predecessors, (58), 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 22:16:46,927 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53 states to 53 states and 58 transitions. [2025-01-08 22:16:46,927 INFO L78 Accepts]: Start accepts. Automaton has 53 states and 58 transitions. Word has length 47 [2025-01-08 22:16:46,928 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-08 22:16:46,928 INFO L471 AbstractCegarLoop]: Abstraction has 53 states and 58 transitions. [2025-01-08 22:16:46,929 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 34 states have (on average 3.5588235294117645) internal successors, (121), 34 states have internal predecessors, (121), 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 22:16:46,929 INFO L276 IsEmpty]: Start isEmpty. Operand 53 states and 58 transitions. [2025-01-08 22:16:46,929 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2025-01-08 22:16:46,929 INFO L210 NwaCegarLoop]: Found error trace [2025-01-08 22:16:46,929 INFO L218 NwaCegarLoop]: trace histogram [5, 5, 4, 4, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-08 22:16:46,937 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2025-01-08 22:16:47,130 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable7 [2025-01-08 22:16:47,130 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-01-08 22:16:47,131 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-08 22:16:47,132 INFO L85 PathProgramCache]: Analyzing trace with hash -493213699, now seen corresponding path program 4 times [2025-01-08 22:16:47,132 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-08 22:16:47,132 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [30560872] [2025-01-08 22:16:47,132 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-01-08 22:16:47,132 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-08 22:16:47,147 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 52 statements into 2 equivalence classes. [2025-01-08 22:16:47,161 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 22:16:47,162 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) [2025-01-08 22:16:47,162 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-08 22:16:47,794 INFO L134 CoverageAnalysis]: Checked inductivity of 61 backedges. 8 proven. 48 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2025-01-08 22:16:47,795 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-08 22:16:47,795 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [30560872] [2025-01-08 22:16:47,795 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [30560872] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-08 22:16:47,795 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [385303337] [2025-01-08 22:16:47,795 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-01-08 22:16:47,795 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-08 22:16:47,795 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-08 22:16:47,798 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 22:16:47,799 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 22:16:47,840 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 52 statements into 2 equivalence classes. [2025-01-08 22:16:47,863 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 22:16:47,863 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) [2025-01-08 22:16:47,863 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-08 22:16:47,866 INFO L256 TraceCheckSpWp]: Trace formula consists of 230 conjuncts, 42 conjuncts are in the unsatisfiable core [2025-01-08 22:16:47,868 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-08 22:16:47,966 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 22:16:47,990 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-01-08 22:16:47,990 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 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 30 treesize of output 25 [2025-01-08 22:16:48,037 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 22:16:48,068 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-01-08 22:16:48,068 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 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 37 treesize of output 35 [2025-01-08 22:16:48,106 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-01-08 22:16:48,106 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 22:16:48,139 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-01-08 22:16:48,139 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 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 44 treesize of output 38 [2025-01-08 22:16:48,460 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-01-08 22:16:48,460 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 29 treesize of output 13 [2025-01-08 22:16:48,471 INFO L134 CoverageAnalysis]: Checked inductivity of 61 backedges. 8 proven. 52 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-01-08 22:16:48,472 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-01-08 22:16:48,714 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 19 treesize of output 17 [2025-01-08 22:16:48,716 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 22:16:48,804 INFO L134 CoverageAnalysis]: Checked inductivity of 61 backedges. 8 proven. 43 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2025-01-08 22:16:48,804 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [385303337] provided 0 perfect and 2 imperfect interpolant sequences [2025-01-08 22:16:48,804 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-01-08 22:16:48,804 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 17, 12] total 39 [2025-01-08 22:16:48,804 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [547302459] [2025-01-08 22:16:48,805 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-01-08 22:16:48,805 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 39 states [2025-01-08 22:16:48,805 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-08 22:16:48,805 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 39 interpolants. [2025-01-08 22:16:48,806 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=150, Invalid=1332, Unknown=0, NotChecked=0, Total=1482 [2025-01-08 22:16:48,806 INFO L87 Difference]: Start difference. First operand 53 states and 58 transitions. Second operand has 39 states, 39 states have (on average 3.4615384615384617) internal successors, (135), 39 states have internal predecessors, (135), 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 22:16:50,489 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-08 22:16:50,489 INFO L93 Difference]: Finished difference Result 157 states and 176 transitions. [2025-01-08 22:16:50,489 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 53 states. [2025-01-08 22:16:50,490 INFO L78 Accepts]: Start accepts. Automaton has has 39 states, 39 states have (on average 3.4615384615384617) internal successors, (135), 39 states have internal predecessors, (135), 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 22:16:50,490 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-08 22:16:50,491 INFO L225 Difference]: With dead ends: 157 [2025-01-08 22:16:50,492 INFO L226 Difference]: Without dead ends: 128 [2025-01-08 22:16:50,493 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 175 GetRequests, 82 SyntacticMatches, 5 SemanticMatches, 88 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1963 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=1210, Invalid=6800, Unknown=0, NotChecked=0, Total=8010 [2025-01-08 22:16:50,494 INFO L435 NwaCegarLoop]: 24 mSDtfsCounter, 335 mSDsluCounter, 291 mSDsCounter, 0 mSdLazyCounter, 1119 mSolverCounterSat, 130 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 335 SdHoareTripleChecker+Valid, 315 SdHoareTripleChecker+Invalid, 1249 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 130 IncrementalHoareTripleChecker+Valid, 1119 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2025-01-08 22:16:50,494 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [335 Valid, 315 Invalid, 1249 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [130 Valid, 1119 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2025-01-08 22:16:50,494 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 128 states. [2025-01-08 22:16:50,501 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 128 to 78. [2025-01-08 22:16:50,501 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 78 states, 77 states have (on average 1.1168831168831168) internal successors, (86), 77 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 22:16:50,501 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 78 states to 78 states and 86 transitions. [2025-01-08 22:16:50,501 INFO L78 Accepts]: Start accepts. Automaton has 78 states and 86 transitions. Word has length 52 [2025-01-08 22:16:50,502 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-08 22:16:50,502 INFO L471 AbstractCegarLoop]: Abstraction has 78 states and 86 transitions. [2025-01-08 22:16:50,502 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 39 states, 39 states have (on average 3.4615384615384617) internal successors, (135), 39 states have internal predecessors, (135), 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 22:16:50,502 INFO L276 IsEmpty]: Start isEmpty. Operand 78 states and 86 transitions. [2025-01-08 22:16:50,502 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2025-01-08 22:16:50,502 INFO L210 NwaCegarLoop]: Found error trace [2025-01-08 22:16:50,503 INFO L218 NwaCegarLoop]: trace histogram [6, 6, 5, 5, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-08 22:16:50,508 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2025-01-08 22:16:50,707 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,6 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-08 22:16:50,707 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-01-08 22:16:50,708 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-08 22:16:50,708 INFO L85 PathProgramCache]: Analyzing trace with hash -699734495, now seen corresponding path program 5 times [2025-01-08 22:16:50,708 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-08 22:16:50,708 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1612817562] [2025-01-08 22:16:50,708 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2025-01-08 22:16:50,708 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-08 22:16:50,719 INFO L108 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 partitioned 57 statements into 6 equivalence classes. [2025-01-08 22:16:50,737 INFO L111 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 6 check-sat command(s) and asserted 57 of 57 statements. [2025-01-08 22:16:50,737 INFO L114 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 6 check-sat command(s) [2025-01-08 22:16:50,737 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-08 22:16:51,169 INFO L134 CoverageAnalysis]: Checked inductivity of 85 backedges. 0 proven. 80 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2025-01-08 22:16:51,169 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-08 22:16:51,169 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1612817562] [2025-01-08 22:16:51,169 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1612817562] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-08 22:16:51,170 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [573959935] [2025-01-08 22:16:51,170 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2025-01-08 22:16:51,170 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-08 22:16:51,170 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-08 22:16:51,174 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 22:16:51,176 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 22:16:51,225 INFO L108 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 partitioned 57 statements into 6 equivalence classes. [2025-01-08 22:16:51,355 INFO L111 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 6 check-sat command(s) and asserted 57 of 57 statements. [2025-01-08 22:16:51,356 INFO L114 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 6 check-sat command(s) [2025-01-08 22:16:51,356 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-08 22:16:51,358 INFO L256 TraceCheckSpWp]: Trace formula consists of 242 conjuncts, 28 conjuncts are in the unsatisfiable core [2025-01-08 22:16:51,359 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-08 22:16:51,414 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 22:16:51,438 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-01-08 22:16:51,438 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 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 30 treesize of output 25 [2025-01-08 22:16:51,628 INFO L134 CoverageAnalysis]: Checked inductivity of 85 backedges. 0 proven. 75 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2025-01-08 22:16:51,628 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-01-08 22:16:51,684 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 17 treesize of output 15 [2025-01-08 22:16:51,686 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 16 treesize of output 12 [2025-01-08 22:16:51,691 INFO L134 CoverageAnalysis]: Checked inductivity of 85 backedges. 0 proven. 75 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2025-01-08 22:16:51,691 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [573959935] provided 0 perfect and 2 imperfect interpolant sequences [2025-01-08 22:16:51,691 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-01-08 22:16:51,691 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14, 13] total 25 [2025-01-08 22:16:51,691 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2134781089] [2025-01-08 22:16:51,691 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-01-08 22:16:51,691 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2025-01-08 22:16:51,691 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-08 22:16:51,692 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2025-01-08 22:16:51,692 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=86, Invalid=514, Unknown=0, NotChecked=0, Total=600 [2025-01-08 22:16:51,692 INFO L87 Difference]: Start difference. First operand 78 states and 86 transitions. Second operand has 25 states, 25 states have (on average 4.32) internal successors, (108), 25 states have internal predecessors, (108), 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 22:16:52,207 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-08 22:16:52,208 INFO L93 Difference]: Finished difference Result 114 states and 129 transitions. [2025-01-08 22:16:52,208 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2025-01-08 22:16:52,208 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 4.32) internal successors, (108), 25 states have internal predecessors, (108), 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 57 [2025-01-08 22:16:52,208 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-08 22:16:52,209 INFO L225 Difference]: With dead ends: 114 [2025-01-08 22:16:52,209 INFO L226 Difference]: Without dead ends: 112 [2025-01-08 22:16:52,210 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 152 GetRequests, 104 SyntacticMatches, 2 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 565 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=302, Invalid=1954, Unknown=0, NotChecked=0, Total=2256 [2025-01-08 22:16:52,210 INFO L435 NwaCegarLoop]: 18 mSDtfsCounter, 53 mSDsluCounter, 175 mSDsCounter, 0 mSdLazyCounter, 807 mSolverCounterSat, 48 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 53 SdHoareTripleChecker+Valid, 193 SdHoareTripleChecker+Invalid, 855 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 48 IncrementalHoareTripleChecker+Valid, 807 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2025-01-08 22:16:52,210 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [53 Valid, 193 Invalid, 855 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [48 Valid, 807 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2025-01-08 22:16:52,210 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 112 states. [2025-01-08 22:16:52,217 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 112 to 83. [2025-01-08 22:16:52,218 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 83 states, 82 states have (on average 1.1219512195121952) internal successors, (92), 82 states have internal predecessors, (92), 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 22:16:52,218 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 83 states to 83 states and 92 transitions. [2025-01-08 22:16:52,218 INFO L78 Accepts]: Start accepts. Automaton has 83 states and 92 transitions. Word has length 57 [2025-01-08 22:16:52,218 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-08 22:16:52,218 INFO L471 AbstractCegarLoop]: Abstraction has 83 states and 92 transitions. [2025-01-08 22:16:52,218 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 4.32) internal successors, (108), 25 states have internal predecessors, (108), 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 22:16:52,218 INFO L276 IsEmpty]: Start isEmpty. Operand 83 states and 92 transitions. [2025-01-08 22:16:52,219 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2025-01-08 22:16:52,219 INFO L210 NwaCegarLoop]: Found error trace [2025-01-08 22:16:52,219 INFO L218 NwaCegarLoop]: trace histogram [7, 7, 6, 6, 4, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-08 22:16:52,226 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2025-01-08 22:16:52,419 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,SelfDestructingSolverStorable9 [2025-01-08 22:16:52,420 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-01-08 22:16:52,420 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-08 22:16:52,420 INFO L85 PathProgramCache]: Analyzing trace with hash 1331182719, now seen corresponding path program 6 times [2025-01-08 22:16:52,420 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-08 22:16:52,420 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [373674034] [2025-01-08 22:16:52,421 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2025-01-08 22:16:52,421 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-08 22:16:52,428 INFO L108 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE partitioned 62 statements into 7 equivalence classes. [2025-01-08 22:16:52,452 INFO L111 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 7 check-sat command(s) and asserted 62 of 62 statements. [2025-01-08 22:16:52,452 INFO L114 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 7 check-sat command(s) [2025-01-08 22:16:52,452 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-08 22:16:52,823 INFO L134 CoverageAnalysis]: Checked inductivity of 114 backedges. 73 proven. 31 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2025-01-08 22:16:52,823 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-08 22:16:52,823 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [373674034] [2025-01-08 22:16:52,823 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [373674034] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-08 22:16:52,823 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1781961975] [2025-01-08 22:16:52,823 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2025-01-08 22:16:52,823 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-08 22:16:52,823 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-08 22:16:52,825 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 22:16:52,827 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 22:16:52,876 INFO L108 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE partitioned 62 statements into 7 equivalence classes. [2025-01-08 22:16:53,006 INFO L111 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 7 check-sat command(s) and asserted 62 of 62 statements. [2025-01-08 22:16:53,006 INFO L114 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 7 check-sat command(s) [2025-01-08 22:16:53,006 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-08 22:16:53,009 INFO L256 TraceCheckSpWp]: Trace formula consists of 257 conjuncts, 14 conjuncts are in the unsatisfiable core [2025-01-08 22:16:53,010 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-08 22:16:53,443 INFO L134 CoverageAnalysis]: Checked inductivity of 114 backedges. 99 proven. 5 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2025-01-08 22:16:53,443 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-01-08 22:16:53,640 INFO L134 CoverageAnalysis]: Checked inductivity of 114 backedges. 99 proven. 5 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2025-01-08 22:16:53,640 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1781961975] provided 0 perfect and 2 imperfect interpolant sequences [2025-01-08 22:16:53,640 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-01-08 22:16:53,640 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15, 14] total 39 [2025-01-08 22:16:53,640 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [426284650] [2025-01-08 22:16:53,640 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-01-08 22:16:53,640 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 39 states [2025-01-08 22:16:53,641 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-08 22:16:53,641 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 39 interpolants. [2025-01-08 22:16:53,641 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=367, Invalid=1115, Unknown=0, NotChecked=0, Total=1482 [2025-01-08 22:16:53,641 INFO L87 Difference]: Start difference. First operand 83 states and 92 transitions. Second operand has 39 states, 39 states have (on average 3.9743589743589745) internal successors, (155), 39 states have internal predecessors, (155), 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 22:16:53,899 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-08 22:16:53,899 INFO L93 Difference]: Finished difference Result 169 states and 185 transitions. [2025-01-08 22:16:53,899 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2025-01-08 22:16:53,899 INFO L78 Accepts]: Start accepts. Automaton has has 39 states, 39 states have (on average 3.9743589743589745) internal successors, (155), 39 states have internal predecessors, (155), 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 62 [2025-01-08 22:16:53,900 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-08 22:16:53,900 INFO L225 Difference]: With dead ends: 169 [2025-01-08 22:16:53,900 INFO L226 Difference]: Without dead ends: 78 [2025-01-08 22:16:53,901 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 143 GetRequests, 99 SyntacticMatches, 1 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 690 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=498, Invalid=1482, Unknown=0, NotChecked=0, Total=1980 [2025-01-08 22:16:53,901 INFO L435 NwaCegarLoop]: 25 mSDtfsCounter, 229 mSDsluCounter, 154 mSDsCounter, 0 mSdLazyCounter, 355 mSolverCounterSat, 74 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 229 SdHoareTripleChecker+Valid, 179 SdHoareTripleChecker+Invalid, 429 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 74 IncrementalHoareTripleChecker+Valid, 355 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2025-01-08 22:16:53,901 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [229 Valid, 179 Invalid, 429 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [74 Valid, 355 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2025-01-08 22:16:53,902 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 78 states. [2025-01-08 22:16:53,907 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 78 to 72. [2025-01-08 22:16:53,907 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 72 states, 71 states have (on average 1.0985915492957747) internal successors, (78), 71 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 22:16:53,907 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 72 states to 72 states and 78 transitions. [2025-01-08 22:16:53,907 INFO L78 Accepts]: Start accepts. Automaton has 72 states and 78 transitions. Word has length 62 [2025-01-08 22:16:53,907 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-08 22:16:53,907 INFO L471 AbstractCegarLoop]: Abstraction has 72 states and 78 transitions. [2025-01-08 22:16:53,908 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 39 states, 39 states have (on average 3.9743589743589745) internal successors, (155), 39 states have internal predecessors, (155), 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 22:16:53,908 INFO L276 IsEmpty]: Start isEmpty. Operand 72 states and 78 transitions. [2025-01-08 22:16:53,908 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2025-01-08 22:16:53,908 INFO L210 NwaCegarLoop]: Found error trace [2025-01-08 22:16:53,908 INFO L218 NwaCegarLoop]: trace histogram [7, 7, 6, 6, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-08 22:16:53,914 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 22:16:54,109 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,8 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-08 22:16:54,109 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-01-08 22:16:54,109 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-08 22:16:54,109 INFO L85 PathProgramCache]: Analyzing trace with hash -492590587, now seen corresponding path program 7 times [2025-01-08 22:16:54,109 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-08 22:16:54,109 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2056396449] [2025-01-08 22:16:54,109 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2025-01-08 22:16:54,110 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-08 22:16:54,119 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 71 statements into 1 equivalence classes. [2025-01-08 22:16:54,130 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 71 of 71 statements. [2025-01-08 22:16:54,130 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-08 22:16:54,130 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-08 22:16:55,260 INFO L134 CoverageAnalysis]: Checked inductivity of 135 backedges. 12 proven. 111 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2025-01-08 22:16:55,261 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-08 22:16:55,261 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2056396449] [2025-01-08 22:16:55,261 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2056396449] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-08 22:16:55,261 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [206581886] [2025-01-08 22:16:55,261 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2025-01-08 22:16:55,261 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-08 22:16:55,261 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-08 22:16:55,263 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 22:16:55,268 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 22:16:55,323 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 71 statements into 1 equivalence classes. [2025-01-08 22:16:55,352 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 71 of 71 statements. [2025-01-08 22:16:55,352 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-08 22:16:55,352 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-08 22:16:55,353 INFO L256 TraceCheckSpWp]: Trace formula consists of 299 conjuncts, 68 conjuncts are in the unsatisfiable core [2025-01-08 22:16:55,356 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-08 22:16:55,469 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 22:16:55,497 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-01-08 22:16:55,498 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 18 [2025-01-08 22:16:55,550 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 22:16:55,559 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-01-08 22:16:55,559 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 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 30 treesize of output 25 [2025-01-08 22:16:55,592 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 22:16:55,600 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-01-08 22:16:55,600 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 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 30 treesize of output 25 [2025-01-08 22:16:55,611 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 22:16:55,619 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-01-08 22:16:55,619 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 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 18 [2025-01-08 22:16:55,636 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 22:16:55,667 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-01-08 22:16:55,667 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 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 37 treesize of output 35 [2025-01-08 22:16:55,709 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-01-08 22:16:55,710 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 22:16:55,748 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-01-08 22:16:55,748 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 10 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 44 treesize of output 45 [2025-01-08 22:16:55,796 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-01-08 22:16:55,796 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 33 treesize of output 38 [2025-01-08 22:16:55,839 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-01-08 22:16:55,839 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 10 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 51 treesize of output 48 [2025-01-08 22:16:56,351 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-01-08 22:16:56,352 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 36 treesize of output 16 [2025-01-08 22:16:56,357 INFO L134 CoverageAnalysis]: Checked inductivity of 135 backedges. 12 proven. 123 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-08 22:16:56,357 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-01-08 22:16:56,812 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 19 treesize of output 17 [2025-01-08 22:16:56,814 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 22:16:56,937 INFO L134 CoverageAnalysis]: Checked inductivity of 135 backedges. 12 proven. 99 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2025-01-08 22:16:56,938 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [206581886] provided 0 perfect and 2 imperfect interpolant sequences [2025-01-08 22:16:56,938 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-01-08 22:16:56,938 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 23, 15] total 52 [2025-01-08 22:16:56,938 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1032385306] [2025-01-08 22:16:56,938 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-01-08 22:16:56,938 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 52 states [2025-01-08 22:16:56,938 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-08 22:16:56,939 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 52 interpolants. [2025-01-08 22:16:56,940 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=226, Invalid=2426, Unknown=0, NotChecked=0, Total=2652 [2025-01-08 22:16:56,940 INFO L87 Difference]: Start difference. First operand 72 states and 78 transitions. Second operand has 52 states, 52 states have (on average 3.519230769230769) internal successors, (183), 52 states have internal predecessors, (183), 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 22:16:59,684 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-08 22:16:59,684 INFO L93 Difference]: Finished difference Result 183 states and 208 transitions. [2025-01-08 22:16:59,684 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 64 states. [2025-01-08 22:16:59,685 INFO L78 Accepts]: Start accepts. Automaton has has 52 states, 52 states have (on average 3.519230769230769) internal successors, (183), 52 states have internal predecessors, (183), 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 71 [2025-01-08 22:16:59,685 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-08 22:16:59,685 INFO L225 Difference]: With dead ends: 183 [2025-01-08 22:16:59,685 INFO L226 Difference]: Without dead ends: 144 [2025-01-08 22:16:59,688 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 233 GetRequests, 114 SyntacticMatches, 7 SemanticMatches, 112 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3584 ImplicationChecksByTransitivity, 2.9s TimeCoverageRelationStatistics Valid=1503, Invalid=11379, Unknown=0, NotChecked=0, Total=12882 [2025-01-08 22:16:59,688 INFO L435 NwaCegarLoop]: 21 mSDtfsCounter, 547 mSDsluCounter, 402 mSDsCounter, 0 mSdLazyCounter, 2074 mSolverCounterSat, 244 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 547 SdHoareTripleChecker+Valid, 423 SdHoareTripleChecker+Invalid, 2318 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 244 IncrementalHoareTripleChecker+Valid, 2074 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2025-01-08 22:16:59,688 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [547 Valid, 423 Invalid, 2318 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [244 Valid, 2074 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2025-01-08 22:16:59,688 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 144 states. [2025-01-08 22:16:59,697 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 144 to 103. [2025-01-08 22:16:59,697 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 103 states, 102 states have (on average 1.0980392156862746) internal successors, (112), 102 states have internal predecessors, (112), 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 22:16:59,697 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 103 states to 103 states and 112 transitions. [2025-01-08 22:16:59,698 INFO L78 Accepts]: Start accepts. Automaton has 103 states and 112 transitions. Word has length 71 [2025-01-08 22:16:59,698 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-08 22:16:59,698 INFO L471 AbstractCegarLoop]: Abstraction has 103 states and 112 transitions. [2025-01-08 22:16:59,698 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 52 states, 52 states have (on average 3.519230769230769) internal successors, (183), 52 states have internal predecessors, (183), 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 22:16:59,698 INFO L276 IsEmpty]: Start isEmpty. Operand 103 states and 112 transitions. [2025-01-08 22:16:59,699 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2025-01-08 22:16:59,699 INFO L210 NwaCegarLoop]: Found error trace [2025-01-08 22:16:59,699 INFO L218 NwaCegarLoop]: trace histogram [8, 8, 7, 7, 5, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-08 22:16:59,705 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2025-01-08 22:16:59,902 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,9 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-08 22:16:59,903 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-01-08 22:16:59,903 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-08 22:16:59,903 INFO L85 PathProgramCache]: Analyzing trace with hash 1468623129, now seen corresponding path program 8 times [2025-01-08 22:16:59,903 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-08 22:16:59,903 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [129702388] [2025-01-08 22:16:59,903 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-01-08 22:16:59,904 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-08 22:16:59,912 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 76 statements into 2 equivalence classes. [2025-01-08 22:16:59,931 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 76 of 76 statements. [2025-01-08 22:16:59,931 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-01-08 22:16:59,931 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-08 22:17:00,551 INFO L134 CoverageAnalysis]: Checked inductivity of 169 backedges. 14 proven. 131 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2025-01-08 22:17:00,551 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-08 22:17:00,551 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [129702388] [2025-01-08 22:17:00,551 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [129702388] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-08 22:17:00,551 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [604502615] [2025-01-08 22:17:00,551 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-01-08 22:17:00,551 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-08 22:17:00,551 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-08 22:17:00,554 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 22:17:00,555 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 22:17:00,619 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 76 statements into 2 equivalence classes. [2025-01-08 22:17:00,649 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 76 of 76 statements. [2025-01-08 22:17:00,649 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-01-08 22:17:00,649 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-08 22:17:00,651 INFO L256 TraceCheckSpWp]: Trace formula consists of 311 conjuncts, 58 conjuncts are in the unsatisfiable core [2025-01-08 22:17:00,657 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-08 22:17:00,785 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 22:17:00,805 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-01-08 22:17:00,806 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 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 30 treesize of output 25 [2025-01-08 22:17:00,854 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 22:17:00,891 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-01-08 22:17:00,891 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 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 37 treesize of output 35 [2025-01-08 22:17:00,930 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-01-08 22:17:00,930 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 22:17:00,975 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-01-08 22:17:00,975 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 10 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 44 treesize of output 45 [2025-01-08 22:17:01,045 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-01-08 22:17:01,045 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 33 treesize of output 38 [2025-01-08 22:17:01,083 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-01-08 22:17:01,083 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 10 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 51 treesize of output 48 [2025-01-08 22:17:01,562 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-01-08 22:17:01,562 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 36 treesize of output 16 [2025-01-08 22:17:01,576 INFO L134 CoverageAnalysis]: Checked inductivity of 169 backedges. 14 proven. 154 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-01-08 22:17:01,576 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-01-08 22:17:01,887 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 19 treesize of output 17 [2025-01-08 22:17:01,893 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 22:17:02,018 INFO L134 CoverageAnalysis]: Checked inductivity of 169 backedges. 14 proven. 131 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2025-01-08 22:17:02,019 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [604502615] provided 0 perfect and 2 imperfect interpolant sequences [2025-01-08 22:17:02,019 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-01-08 22:17:02,019 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 23, 16] total 50 [2025-01-08 22:17:02,019 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2114165163] [2025-01-08 22:17:02,019 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-01-08 22:17:02,020 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 50 states [2025-01-08 22:17:02,020 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-08 22:17:02,020 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 50 interpolants. [2025-01-08 22:17:02,021 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=197, Invalid=2253, Unknown=0, NotChecked=0, Total=2450 [2025-01-08 22:17:02,021 INFO L87 Difference]: Start difference. First operand 103 states and 112 transitions. Second operand has 50 states, 50 states have (on average 3.84) internal successors, (192), 50 states have internal predecessors, (192), 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 22:17:03,812 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-08 22:17:03,812 INFO L93 Difference]: Finished difference Result 167 states and 191 transitions. [2025-01-08 22:17:03,812 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2025-01-08 22:17:03,813 INFO L78 Accepts]: Start accepts. Automaton has has 50 states, 50 states have (on average 3.84) internal successors, (192), 50 states have internal predecessors, (192), 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 22:17:03,813 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-08 22:17:03,813 INFO L225 Difference]: With dead ends: 167 [2025-01-08 22:17:03,813 INFO L226 Difference]: Without dead ends: 158 [2025-01-08 22:17:03,815 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 215 GetRequests, 119 SyntacticMatches, 7 SemanticMatches, 89 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2011 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=837, Invalid=7353, Unknown=0, NotChecked=0, Total=8190 [2025-01-08 22:17:03,815 INFO L435 NwaCegarLoop]: 23 mSDtfsCounter, 348 mSDsluCounter, 377 mSDsCounter, 0 mSdLazyCounter, 1875 mSolverCounterSat, 128 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 348 SdHoareTripleChecker+Valid, 400 SdHoareTripleChecker+Invalid, 2003 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 128 IncrementalHoareTripleChecker+Valid, 1875 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2025-01-08 22:17:03,815 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [348 Valid, 400 Invalid, 2003 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [128 Valid, 1875 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2025-01-08 22:17:03,816 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 158 states. [2025-01-08 22:17:03,824 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 158 to 108. [2025-01-08 22:17:03,824 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 108 states, 107 states have (on average 1.0934579439252337) internal successors, (117), 107 states have internal predecessors, (117), 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 22:17:03,824 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 108 states to 108 states and 117 transitions. [2025-01-08 22:17:03,825 INFO L78 Accepts]: Start accepts. Automaton has 108 states and 117 transitions. Word has length 76 [2025-01-08 22:17:03,825 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-08 22:17:03,825 INFO L471 AbstractCegarLoop]: Abstraction has 108 states and 117 transitions. [2025-01-08 22:17:03,825 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 50 states, 50 states have (on average 3.84) internal successors, (192), 50 states have internal predecessors, (192), 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 22:17:03,825 INFO L276 IsEmpty]: Start isEmpty. Operand 108 states and 117 transitions. [2025-01-08 22:17:03,826 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2025-01-08 22:17:03,826 INFO L210 NwaCegarLoop]: Found error trace [2025-01-08 22:17:03,826 INFO L218 NwaCegarLoop]: trace histogram [9, 9, 8, 8, 6, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-08 22:17:03,842 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 22:17:04,026 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,10 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-08 22:17:04,026 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-01-08 22:17:04,027 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-08 22:17:04,027 INFO L85 PathProgramCache]: Analyzing trace with hash 964949637, now seen corresponding path program 9 times [2025-01-08 22:17:04,027 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-08 22:17:04,027 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [581546446] [2025-01-08 22:17:04,027 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-01-08 22:17:04,027 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-08 22:17:04,037 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 81 statements into 9 equivalence classes. [2025-01-08 22:17:04,076 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 9 check-sat command(s) and asserted 81 of 81 statements. [2025-01-08 22:17:04,076 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 9 check-sat command(s) [2025-01-08 22:17:04,076 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-08 22:17:04,772 INFO L134 CoverageAnalysis]: Checked inductivity of 208 backedges. 105 proven. 86 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2025-01-08 22:17:04,773 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-08 22:17:04,773 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [581546446] [2025-01-08 22:17:04,773 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [581546446] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-08 22:17:04,773 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [975547603] [2025-01-08 22:17:04,773 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-01-08 22:17:04,773 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-08 22:17:04,773 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-08 22:17:04,775 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 22:17:04,776 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 22:17:04,842 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 81 statements into 9 equivalence classes. [2025-01-08 22:17:05,070 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 9 check-sat command(s) and asserted 81 of 81 statements. [2025-01-08 22:17:05,070 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 9 check-sat command(s) [2025-01-08 22:17:05,070 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-08 22:17:05,075 INFO L256 TraceCheckSpWp]: Trace formula consists of 323 conjuncts, 42 conjuncts are in the unsatisfiable core [2025-01-08 22:17:05,077 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-08 22:17:05,118 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 22:17:05,137 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-01-08 22:17:05,137 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 40 treesize of output 31 [2025-01-08 22:17:05,388 INFO L134 CoverageAnalysis]: Checked inductivity of 208 backedges. 0 proven. 184 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2025-01-08 22:17:05,388 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-01-08 22:17:05,601 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 17 treesize of output 15 [2025-01-08 22:17:05,602 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 16 treesize of output 12 [2025-01-08 22:17:05,609 INFO L134 CoverageAnalysis]: Checked inductivity of 208 backedges. 0 proven. 184 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2025-01-08 22:17:05,609 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [975547603] provided 0 perfect and 2 imperfect interpolant sequences [2025-01-08 22:17:05,609 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-01-08 22:17:05,609 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 17, 17] total 45 [2025-01-08 22:17:05,609 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [335661952] [2025-01-08 22:17:05,609 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-01-08 22:17:05,609 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 45 states [2025-01-08 22:17:05,609 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-08 22:17:05,610 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 45 interpolants. [2025-01-08 22:17:05,610 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=165, Invalid=1815, Unknown=0, NotChecked=0, Total=1980 [2025-01-08 22:17:05,611 INFO L87 Difference]: Start difference. First operand 108 states and 117 transitions. Second operand has 45 states, 45 states have (on average 4.044444444444444) internal successors, (182), 45 states have internal predecessors, (182), 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 22:17:09,695 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-08 22:17:09,695 INFO L93 Difference]: Finished difference Result 340 states and 376 transitions. [2025-01-08 22:17:09,695 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 132 states. [2025-01-08 22:17:09,695 INFO L78 Accepts]: Start accepts. Automaton has has 45 states, 45 states have (on average 4.044444444444444) internal successors, (182), 45 states have internal predecessors, (182), 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 81 [2025-01-08 22:17:09,695 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-08 22:17:09,696 INFO L225 Difference]: With dead ends: 340 [2025-01-08 22:17:09,696 INFO L226 Difference]: Without dead ends: 164 [2025-01-08 22:17:09,701 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 317 GetRequests, 145 SyntacticMatches, 1 SemanticMatches, 171 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10008 ImplicationChecksByTransitivity, 3.4s TimeCoverageRelationStatistics Valid=2643, Invalid=27113, Unknown=0, NotChecked=0, Total=29756 [2025-01-08 22:17:09,701 INFO L435 NwaCegarLoop]: 18 mSDtfsCounter, 696 mSDsluCounter, 382 mSDsCounter, 0 mSdLazyCounter, 3506 mSolverCounterSat, 243 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 696 SdHoareTripleChecker+Valid, 400 SdHoareTripleChecker+Invalid, 3749 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 243 IncrementalHoareTripleChecker+Valid, 3506 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2025-01-08 22:17:09,701 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [696 Valid, 400 Invalid, 3749 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [243 Valid, 3506 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2025-01-08 22:17:09,701 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 164 states. [2025-01-08 22:17:09,708 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 164 to 96. [2025-01-08 22:17:09,709 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 96 states, 95 states have (on average 1.0842105263157895) internal successors, (103), 95 states have internal predecessors, (103), 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 22:17:09,709 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 96 states to 96 states and 103 transitions. [2025-01-08 22:17:09,709 INFO L78 Accepts]: Start accepts. Automaton has 96 states and 103 transitions. Word has length 81 [2025-01-08 22:17:09,709 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-08 22:17:09,709 INFO L471 AbstractCegarLoop]: Abstraction has 96 states and 103 transitions. [2025-01-08 22:17:09,709 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 45 states, 45 states have (on average 4.044444444444444) internal successors, (182), 45 states have internal predecessors, (182), 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 22:17:09,709 INFO L276 IsEmpty]: Start isEmpty. Operand 96 states and 103 transitions. [2025-01-08 22:17:09,710 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2025-01-08 22:17:09,710 INFO L210 NwaCegarLoop]: Found error trace [2025-01-08 22:17:09,710 INFO L218 NwaCegarLoop]: trace histogram [10, 10, 9, 9, 6, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-08 22:17:09,717 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2025-01-08 22:17:09,910 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2025-01-08 22:17:09,911 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-01-08 22:17:09,911 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-08 22:17:09,911 INFO L85 PathProgramCache]: Analyzing trace with hash -1328776927, now seen corresponding path program 10 times [2025-01-08 22:17:09,911 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-08 22:17:09,911 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [290960454] [2025-01-08 22:17:09,911 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-01-08 22:17:09,912 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-08 22:17:09,923 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 95 statements into 2 equivalence classes. [2025-01-08 22:17:09,945 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) and asserted 95 of 95 statements. [2025-01-08 22:17:09,945 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) [2025-01-08 22:17:09,945 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-08 22:17:11,199 INFO L134 CoverageAnalysis]: Checked inductivity of 282 backedges. 18 proven. 264 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-08 22:17:11,199 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-08 22:17:11,199 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [290960454] [2025-01-08 22:17:11,199 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [290960454] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-08 22:17:11,199 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [483728378] [2025-01-08 22:17:11,199 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-01-08 22:17:11,199 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-08 22:17:11,199 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-08 22:17:11,201 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 22:17:11,202 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 22:17:11,279 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 95 statements into 2 equivalence classes. [2025-01-08 22:17:11,317 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) and asserted 95 of 95 statements. [2025-01-08 22:17:11,318 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) [2025-01-08 22:17:11,318 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-08 22:17:11,320 INFO L256 TraceCheckSpWp]: Trace formula consists of 380 conjuncts, 88 conjuncts are in the unsatisfiable core [2025-01-08 22:17:11,323 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-08 22:17:11,446 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 22:17:11,482 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-01-08 22:17:11,482 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 18 [2025-01-08 22:17:11,533 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 22:17:11,540 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-01-08 22:17:11,540 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 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 30 treesize of output 25 [2025-01-08 22:17:11,575 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 22:17:11,583 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-01-08 22:17:11,583 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 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 30 treesize of output 25 [2025-01-08 22:17:11,617 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 22:17:11,627 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-01-08 22:17:11,627 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 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 30 treesize of output 25 [2025-01-08 22:17:11,638 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 22:17:11,648 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-01-08 22:17:11,648 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 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 18 [2025-01-08 22:17:11,667 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 22:17:11,706 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-01-08 22:17:11,706 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 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 37 treesize of output 35 [2025-01-08 22:17:11,754 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-01-08 22:17:11,754 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 22:17:11,800 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-01-08 22:17:11,800 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 10 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 44 treesize of output 45 [2025-01-08 22:17:11,849 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-01-08 22:17:11,849 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 33 treesize of output 38 [2025-01-08 22:17:11,895 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-01-08 22:17:11,895 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 6 select indices, 6 select index equivalence classes, 15 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 15 case distinctions, treesize of input 51 treesize of output 55 [2025-01-08 22:17:11,946 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-01-08 22:17:11,946 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 10 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 40 treesize of output 48 [2025-01-08 22:17:11,996 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-01-08 22:17:11,996 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 6 select indices, 6 select index equivalence classes, 15 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 15 case distinctions, treesize of input 58 treesize of output 58 [2025-01-08 22:17:12,808 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-01-08 22:17:12,809 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 5 select indices, 5 select index equivalence classes, 10 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 43 treesize of output 19 [2025-01-08 22:17:12,813 INFO L134 CoverageAnalysis]: Checked inductivity of 282 backedges. 18 proven. 264 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-08 22:17:12,813 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-01-08 22:17:13,428 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 19 treesize of output 17 [2025-01-08 22:17:13,430 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 22:17:13,588 INFO L134 CoverageAnalysis]: Checked inductivity of 282 backedges. 18 proven. 220 refuted. 0 times theorem prover too weak. 44 trivial. 0 not checked. [2025-01-08 22:17:13,588 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [483728378] provided 0 perfect and 2 imperfect interpolant sequences [2025-01-08 22:17:13,588 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-01-08 22:17:13,588 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 30, 19] total 66 [2025-01-08 22:17:13,588 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [996886099] [2025-01-08 22:17:13,588 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-01-08 22:17:13,589 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 66 states [2025-01-08 22:17:13,589 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-08 22:17:13,591 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 66 interpolants. [2025-01-08 22:17:13,591 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=279, Invalid=4011, Unknown=0, NotChecked=0, Total=4290 [2025-01-08 22:17:13,591 INFO L87 Difference]: Start difference. First operand 96 states and 103 transitions. Second operand has 66 states, 66 states have (on average 3.8636363636363638) internal successors, (255), 66 states have internal predecessors, (255), 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 22:17:16,734 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-08 22:17:16,734 INFO L93 Difference]: Finished difference Result 167 states and 192 transitions. [2025-01-08 22:17:16,734 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 59 states. [2025-01-08 22:17:16,736 INFO L78 Accepts]: Start accepts. Automaton has has 66 states, 66 states have (on average 3.8636363636363638) internal successors, (255), 66 states have internal predecessors, (255), 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 95 [2025-01-08 22:17:16,736 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-08 22:17:16,737 INFO L225 Difference]: With dead ends: 167 [2025-01-08 22:17:16,737 INFO L226 Difference]: Without dead ends: 158 [2025-01-08 22:17:16,739 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 283 GetRequests, 153 SyntacticMatches, 9 SemanticMatches, 121 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4335 ImplicationChecksByTransitivity, 3.2s TimeCoverageRelationStatistics Valid=1248, Invalid=13758, Unknown=0, NotChecked=0, Total=15006 [2025-01-08 22:17:16,739 INFO L435 NwaCegarLoop]: 27 mSDtfsCounter, 538 mSDsluCounter, 721 mSDsCounter, 0 mSdLazyCounter, 3969 mSolverCounterSat, 236 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 538 SdHoareTripleChecker+Valid, 748 SdHoareTripleChecker+Invalid, 4205 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 236 IncrementalHoareTripleChecker+Valid, 3969 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2025-01-08 22:17:16,740 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [538 Valid, 748 Invalid, 4205 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [236 Valid, 3969 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2025-01-08 22:17:16,740 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 158 states. [2025-01-08 22:17:16,753 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 158 to 101. [2025-01-08 22:17:16,753 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 101 states, 100 states have (on average 1.08) internal successors, (108), 100 states have internal predecessors, (108), 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 22:17:16,753 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 101 states to 101 states and 108 transitions. [2025-01-08 22:17:16,753 INFO L78 Accepts]: Start accepts. Automaton has 101 states and 108 transitions. Word has length 95 [2025-01-08 22:17:16,753 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-08 22:17:16,754 INFO L471 AbstractCegarLoop]: Abstraction has 101 states and 108 transitions. [2025-01-08 22:17:16,754 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 66 states, 66 states have (on average 3.8636363636363638) internal successors, (255), 66 states have internal predecessors, (255), 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 22:17:16,754 INFO L276 IsEmpty]: Start isEmpty. Operand 101 states and 108 transitions. [2025-01-08 22:17:16,754 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2025-01-08 22:17:16,754 INFO L210 NwaCegarLoop]: Found error trace [2025-01-08 22:17:16,754 INFO L218 NwaCegarLoop]: trace histogram [11, 11, 10, 10, 7, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-08 22:17:16,761 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2025-01-08 22:17:16,956 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,SelfDestructingSolverStorable14 [2025-01-08 22:17:16,956 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-01-08 22:17:16,956 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-08 22:17:16,956 INFO L85 PathProgramCache]: Analyzing trace with hash -1924027523, now seen corresponding path program 11 times [2025-01-08 22:17:16,956 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-08 22:17:16,956 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [698540585] [2025-01-08 22:17:16,956 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2025-01-08 22:17:16,956 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-08 22:17:16,977 INFO L108 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 partitioned 100 statements into 11 equivalence classes. [2025-01-08 22:17:17,004 INFO L111 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 11 check-sat command(s) and asserted 100 of 100 statements. [2025-01-08 22:17:17,004 INFO L114 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 11 check-sat command(s) [2025-01-08 22:17:17,004 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-08 22:17:17,828 INFO L134 CoverageAnalysis]: Checked inductivity of 331 backedges. 20 proven. 289 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2025-01-08 22:17:17,828 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-08 22:17:17,828 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [698540585] [2025-01-08 22:17:17,828 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [698540585] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-08 22:17:17,828 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [925054540] [2025-01-08 22:17:17,829 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2025-01-08 22:17:17,829 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-08 22:17:17,829 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-08 22:17:17,830 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 22:17:17,838 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 22:17:17,914 INFO L108 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 partitioned 100 statements into 11 equivalence classes. [2025-01-08 22:17:18,624 INFO L111 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 11 check-sat command(s) and asserted 100 of 100 statements. [2025-01-08 22:17:18,624 INFO L114 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 11 check-sat command(s) [2025-01-08 22:17:18,624 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-08 22:17:18,632 INFO L256 TraceCheckSpWp]: Trace formula consists of 392 conjuncts, 66 conjuncts are in the unsatisfiable core [2025-01-08 22:17:18,635 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-08 22:17:18,825 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 22:17:18,850 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-01-08 22:17:18,850 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 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 30 treesize of output 25 [2025-01-08 22:17:18,903 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 22:17:18,938 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-01-08 22:17:18,938 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 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 37 treesize of output 35 [2025-01-08 22:17:18,978 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-01-08 22:17:18,978 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 22:17:19,019 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-01-08 22:17:19,019 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 10 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 44 treesize of output 45 [2025-01-08 22:17:19,064 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-01-08 22:17:19,065 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 33 treesize of output 38 [2025-01-08 22:17:19,108 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-01-08 22:17:19,108 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 6 select indices, 6 select index equivalence classes, 15 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 15 case distinctions, treesize of input 51 treesize of output 55 [2025-01-08 22:17:19,159 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-01-08 22:17:19,159 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 10 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 40 treesize of output 48 [2025-01-08 22:17:19,205 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-01-08 22:17:19,205 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 6 select indices, 6 select index equivalence classes, 15 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 15 case distinctions, treesize of input 58 treesize of output 58 [2025-01-08 22:17:20,151 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-01-08 22:17:20,152 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 5 select indices, 5 select index equivalence classes, 10 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 43 treesize of output 19 [2025-01-08 22:17:20,156 INFO L134 CoverageAnalysis]: Checked inductivity of 331 backedges. 20 proven. 289 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2025-01-08 22:17:20,156 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-01-08 22:17:20,744 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 19 treesize of output 17 [2025-01-08 22:17:20,746 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 22:17:20,931 INFO L134 CoverageAnalysis]: Checked inductivity of 331 backedges. 20 proven. 267 refuted. 0 times theorem prover too weak. 44 trivial. 0 not checked. [2025-01-08 22:17:20,931 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [925054540] provided 0 perfect and 2 imperfect interpolant sequences [2025-01-08 22:17:20,932 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-01-08 22:17:20,932 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24, 29, 20] total 67 [2025-01-08 22:17:20,932 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [709588420] [2025-01-08 22:17:20,932 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-01-08 22:17:20,932 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 67 states [2025-01-08 22:17:20,932 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-08 22:17:20,933 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 67 interpolants. [2025-01-08 22:17:20,933 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=333, Invalid=4089, Unknown=0, NotChecked=0, Total=4422 [2025-01-08 22:17:20,933 INFO L87 Difference]: Start difference. First operand 101 states and 108 transitions. Second operand has 67 states, 67 states have (on average 3.7611940298507465) internal successors, (252), 67 states have internal predecessors, (252), 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 22:17:23,702 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-08 22:17:23,703 INFO L93 Difference]: Finished difference Result 175 states and 201 transitions. [2025-01-08 22:17:23,703 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 59 states. [2025-01-08 22:17:23,703 INFO L78 Accepts]: Start accepts. Automaton has has 67 states, 67 states have (on average 3.7611940298507465) internal successors, (252), 67 states have internal predecessors, (252), 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 100 [2025-01-08 22:17:23,703 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-08 22:17:23,704 INFO L225 Difference]: With dead ends: 175 [2025-01-08 22:17:23,704 INFO L226 Difference]: Without dead ends: 166 [2025-01-08 22:17:23,709 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 282 GetRequests, 158 SyntacticMatches, 5 SemanticMatches, 119 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4521 ImplicationChecksByTransitivity, 3.0s TimeCoverageRelationStatistics Valid=1156, Invalid=13364, Unknown=0, NotChecked=0, Total=14520 [2025-01-08 22:17:23,709 INFO L435 NwaCegarLoop]: 29 mSDtfsCounter, 455 mSDsluCounter, 697 mSDsCounter, 0 mSdLazyCounter, 3326 mSolverCounterSat, 173 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 455 SdHoareTripleChecker+Valid, 726 SdHoareTripleChecker+Invalid, 3499 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 173 IncrementalHoareTripleChecker+Valid, 3326 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2025-01-08 22:17:23,709 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [455 Valid, 726 Invalid, 3499 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [173 Valid, 3326 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2025-01-08 22:17:23,709 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 166 states. [2025-01-08 22:17:23,722 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 166 to 106. [2025-01-08 22:17:23,725 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 106 states, 105 states have (on average 1.0761904761904761) internal successors, (113), 105 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 22:17:23,725 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 106 states to 106 states and 113 transitions. [2025-01-08 22:17:23,726 INFO L78 Accepts]: Start accepts. Automaton has 106 states and 113 transitions. Word has length 100 [2025-01-08 22:17:23,726 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-08 22:17:23,726 INFO L471 AbstractCegarLoop]: Abstraction has 106 states and 113 transitions. [2025-01-08 22:17:23,726 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 67 states, 67 states have (on average 3.7611940298507465) internal successors, (252), 67 states have internal predecessors, (252), 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 22:17:23,726 INFO L276 IsEmpty]: Start isEmpty. Operand 106 states and 113 transitions. [2025-01-08 22:17:23,726 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2025-01-08 22:17:23,730 INFO L210 NwaCegarLoop]: Found error trace [2025-01-08 22:17:23,730 INFO L218 NwaCegarLoop]: trace histogram [12, 12, 11, 11, 8, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-08 22:17:23,744 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Ended with exit code 0 [2025-01-08 22:17:23,931 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15,13 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-08 22:17:23,931 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-01-08 22:17:23,932 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-08 22:17:23,932 INFO L85 PathProgramCache]: Analyzing trace with hash -1422290271, now seen corresponding path program 12 times [2025-01-08 22:17:23,932 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-08 22:17:23,932 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1435145265] [2025-01-08 22:17:23,932 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2025-01-08 22:17:23,932 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-08 22:17:23,943 INFO L108 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE partitioned 105 statements into 12 equivalence classes. [2025-01-08 22:17:24,005 INFO L111 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 12 check-sat command(s) and asserted 105 of 105 statements. [2025-01-08 22:17:24,005 INFO L114 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 12 check-sat command(s) [2025-01-08 22:17:24,005 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-08 22:17:24,739 INFO L134 CoverageAnalysis]: Checked inductivity of 385 backedges. 225 proven. 116 refuted. 0 times theorem prover too weak. 44 trivial. 0 not checked. [2025-01-08 22:17:24,739 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-08 22:17:24,739 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1435145265] [2025-01-08 22:17:24,739 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1435145265] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-08 22:17:24,739 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1918517418] [2025-01-08 22:17:24,739 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2025-01-08 22:17:24,739 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-08 22:17:24,740 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-08 22:17:24,741 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 22:17:24,743 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 22:17:24,830 INFO L108 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE partitioned 105 statements into 12 equivalence classes. [2025-01-08 22:17:25,434 INFO L111 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 12 check-sat command(s) and asserted 105 of 105 statements. [2025-01-08 22:17:25,435 INFO L114 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 12 check-sat command(s) [2025-01-08 22:17:25,435 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-08 22:17:25,439 INFO L256 TraceCheckSpWp]: Trace formula consists of 404 conjuncts, 51 conjuncts are in the unsatisfiable core [2025-01-08 22:17:25,441 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-08 22:17:25,501 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 22:17:25,523 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-01-08 22:17:25,523 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 40 treesize of output 31 [2025-01-08 22:17:25,916 INFO L134 CoverageAnalysis]: Checked inductivity of 385 backedges. 0 proven. 341 refuted. 0 times theorem prover too weak. 44 trivial. 0 not checked. [2025-01-08 22:17:25,916 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-01-08 22:17:26,275 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 17 treesize of output 15 [2025-01-08 22:17:26,277 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 16 treesize of output 12 [2025-01-08 22:17:26,286 INFO L134 CoverageAnalysis]: Checked inductivity of 385 backedges. 0 proven. 341 refuted. 0 times theorem prover too weak. 44 trivial. 0 not checked. [2025-01-08 22:17:26,287 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1918517418] provided 0 perfect and 2 imperfect interpolant sequences [2025-01-08 22:17:26,287 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-01-08 22:17:26,287 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 22, 22] total 56 [2025-01-08 22:17:26,287 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [730880166] [2025-01-08 22:17:26,287 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-01-08 22:17:26,287 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 56 states [2025-01-08 22:17:26,287 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-08 22:17:26,288 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 56 interpolants. [2025-01-08 22:17:26,288 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=226, Invalid=2854, Unknown=0, NotChecked=0, Total=3080 [2025-01-08 22:17:26,288 INFO L87 Difference]: Start difference. First operand 106 states and 113 transitions. Second operand has 56 states, 56 states have (on average 4.107142857142857) internal successors, (230), 56 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 22:17:30,554 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-08 22:17:30,554 INFO L93 Difference]: Finished difference Result 289 states and 320 transitions. [2025-01-08 22:17:30,554 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 140 states. [2025-01-08 22:17:30,555 INFO L78 Accepts]: Start accepts. Automaton has has 56 states, 56 states have (on average 4.107142857142857) internal successors, (230), 56 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 105 [2025-01-08 22:17:30,555 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-08 22:17:30,556 INFO L225 Difference]: With dead ends: 289 [2025-01-08 22:17:30,556 INFO L226 Difference]: Without dead ends: 216 [2025-01-08 22:17:30,557 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 370 GetRequests, 179 SyntacticMatches, 1 SemanticMatches, 190 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12426 ImplicationChecksByTransitivity, 4.0s TimeCoverageRelationStatistics Valid=2678, Invalid=33994, Unknown=0, NotChecked=0, Total=36672 [2025-01-08 22:17:30,558 INFO L435 NwaCegarLoop]: 20 mSDtfsCounter, 753 mSDsluCounter, 396 mSDsCounter, 0 mSdLazyCounter, 2925 mSolverCounterSat, 234 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 753 SdHoareTripleChecker+Valid, 416 SdHoareTripleChecker+Invalid, 3159 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 234 IncrementalHoareTripleChecker+Valid, 2925 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2025-01-08 22:17:30,558 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [753 Valid, 416 Invalid, 3159 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [234 Valid, 2925 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2025-01-08 22:17:30,558 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 216 states. [2025-01-08 22:17:30,568 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 216 to 114. [2025-01-08 22:17:30,568 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 114 states, 113 states have (on average 1.079646017699115) internal successors, (122), 113 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 22:17:30,569 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 114 states to 114 states and 122 transitions. [2025-01-08 22:17:30,569 INFO L78 Accepts]: Start accepts. Automaton has 114 states and 122 transitions. Word has length 105 [2025-01-08 22:17:30,569 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-08 22:17:30,569 INFO L471 AbstractCegarLoop]: Abstraction has 114 states and 122 transitions. [2025-01-08 22:17:30,569 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 56 states, 56 states have (on average 4.107142857142857) internal successors, (230), 56 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 22:17:30,569 INFO L276 IsEmpty]: Start isEmpty. Operand 114 states and 122 transitions. [2025-01-08 22:17:30,570 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2025-01-08 22:17:30,570 INFO L210 NwaCegarLoop]: Found error trace [2025-01-08 22:17:30,570 INFO L218 NwaCegarLoop]: trace histogram [13, 13, 12, 12, 8, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-08 22:17:30,582 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 22:17:30,770 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2025-01-08 22:17:30,770 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-01-08 22:17:30,771 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-08 22:17:30,771 INFO L85 PathProgramCache]: Analyzing trace with hash -1818300894, now seen corresponding path program 13 times [2025-01-08 22:17:30,771 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-08 22:17:30,771 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [942498914] [2025-01-08 22:17:30,771 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2025-01-08 22:17:30,771 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-08 22:17:30,785 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 113 statements into 1 equivalence classes. [2025-01-08 22:17:30,791 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 113 of 113 statements. [2025-01-08 22:17:30,791 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-08 22:17:30,792 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-08 22:17:30,984 INFO L134 CoverageAnalysis]: Checked inductivity of 457 backedges. 25 proven. 32 refuted. 0 times theorem prover too weak. 400 trivial. 0 not checked. [2025-01-08 22:17:30,984 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-08 22:17:30,985 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [942498914] [2025-01-08 22:17:30,985 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [942498914] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-08 22:17:30,985 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1091284884] [2025-01-08 22:17:30,985 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2025-01-08 22:17:30,985 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-08 22:17:30,985 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-08 22:17:30,987 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 22:17:30,989 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 22:17:31,084 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 113 statements into 1 equivalence classes. [2025-01-08 22:17:31,122 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 113 of 113 statements. [2025-01-08 22:17:31,123 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-08 22:17:31,123 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-08 22:17:31,124 INFO L256 TraceCheckSpWp]: Trace formula consists of 433 conjuncts, 12 conjuncts are in the unsatisfiable core [2025-01-08 22:17:31,126 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-08 22:17:31,248 INFO L134 CoverageAnalysis]: Checked inductivity of 457 backedges. 35 proven. 22 refuted. 0 times theorem prover too weak. 400 trivial. 0 not checked. [2025-01-08 22:17:31,248 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-01-08 22:17:31,443 INFO L134 CoverageAnalysis]: Checked inductivity of 457 backedges. 35 proven. 22 refuted. 0 times theorem prover too weak. 400 trivial. 0 not checked. [2025-01-08 22:17:31,443 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1091284884] provided 0 perfect and 2 imperfect interpolant sequences [2025-01-08 22:17:31,443 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-01-08 22:17:31,443 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13, 13] total 20 [2025-01-08 22:17:31,443 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1268923776] [2025-01-08 22:17:31,443 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-01-08 22:17:31,444 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2025-01-08 22:17:31,444 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-08 22:17:31,444 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2025-01-08 22:17:31,444 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=101, Invalid=279, Unknown=0, NotChecked=0, Total=380 [2025-01-08 22:17:31,444 INFO L87 Difference]: Start difference. First operand 114 states and 122 transitions. Second operand has 20 states, 20 states have (on average 3.45) internal successors, (69), 20 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 22:17:31,621 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-08 22:17:31,621 INFO L93 Difference]: Finished difference Result 237 states and 255 transitions. [2025-01-08 22:17:31,622 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2025-01-08 22:17:31,622 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 3.45) internal successors, (69), 20 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) Word has length 113 [2025-01-08 22:17:31,622 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-08 22:17:31,622 INFO L225 Difference]: With dead ends: 237 [2025-01-08 22:17:31,623 INFO L226 Difference]: Without dead ends: 126 [2025-01-08 22:17:31,623 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 241 GetRequests, 209 SyntacticMatches, 10 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 245 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=151, Invalid=401, Unknown=0, NotChecked=0, Total=552 [2025-01-08 22:17:31,623 INFO L435 NwaCegarLoop]: 12 mSDtfsCounter, 108 mSDsluCounter, 58 mSDsCounter, 0 mSdLazyCounter, 253 mSolverCounterSat, 55 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 108 SdHoareTripleChecker+Valid, 70 SdHoareTripleChecker+Invalid, 308 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 55 IncrementalHoareTripleChecker+Valid, 253 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-01-08 22:17:31,623 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [108 Valid, 70 Invalid, 308 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [55 Valid, 253 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-01-08 22:17:31,624 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 126 states. [2025-01-08 22:17:31,634 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 126 to 120. [2025-01-08 22:17:31,634 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 120 states, 119 states have (on average 1.0756302521008403) internal successors, (128), 119 states have internal predecessors, (128), 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 22:17:31,635 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 120 states to 120 states and 128 transitions. [2025-01-08 22:17:31,635 INFO L78 Accepts]: Start accepts. Automaton has 120 states and 128 transitions. Word has length 113 [2025-01-08 22:17:31,635 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-08 22:17:31,635 INFO L471 AbstractCegarLoop]: Abstraction has 120 states and 128 transitions. [2025-01-08 22:17:31,635 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 3.45) internal successors, (69), 20 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 22:17:31,635 INFO L276 IsEmpty]: Start isEmpty. Operand 120 states and 128 transitions. [2025-01-08 22:17:31,636 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 120 [2025-01-08 22:17:31,636 INFO L210 NwaCegarLoop]: Found error trace [2025-01-08 22:17:31,636 INFO L218 NwaCegarLoop]: trace histogram [13, 13, 12, 12, 8, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-08 22:17:31,643 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Ended with exit code 0 [2025-01-08 22:17:31,836 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,SelfDestructingSolverStorable17 [2025-01-08 22:17:31,836 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-01-08 22:17:31,837 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-08 22:17:31,837 INFO L85 PathProgramCache]: Analyzing trace with hash 1684916997, now seen corresponding path program 14 times [2025-01-08 22:17:31,837 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-08 22:17:31,837 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [791021302] [2025-01-08 22:17:31,837 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-01-08 22:17:31,837 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-08 22:17:31,856 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 119 statements into 2 equivalence classes. [2025-01-08 22:17:31,876 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 119 of 119 statements. [2025-01-08 22:17:31,876 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-01-08 22:17:31,876 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-08 22:17:34,375 INFO L134 CoverageAnalysis]: Checked inductivity of 483 backedges. 24 proven. 441 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2025-01-08 22:17:34,375 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-08 22:17:34,375 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [791021302] [2025-01-08 22:17:34,375 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [791021302] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-08 22:17:34,375 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [927991100] [2025-01-08 22:17:34,375 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-01-08 22:17:34,375 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-08 22:17:34,375 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-08 22:17:34,377 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 22:17:34,378 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 22:17:34,487 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 119 statements into 2 equivalence classes. [2025-01-08 22:17:34,536 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 119 of 119 statements. [2025-01-08 22:17:34,536 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-01-08 22:17:34,537 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-08 22:17:34,544 INFO L256 TraceCheckSpWp]: Trace formula consists of 461 conjuncts, 108 conjuncts are in the unsatisfiable core [2025-01-08 22:17:34,552 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-08 22:17:34,754 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 22:17:34,780 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-01-08 22:17:34,780 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 18 [2025-01-08 22:17:34,833 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 22:17:34,848 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-01-08 22:17:34,848 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 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 30 treesize of output 25 [2025-01-08 22:17:34,883 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 22:17:34,902 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-01-08 22:17:34,902 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 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 30 treesize of output 25 [2025-01-08 22:17:34,930 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 22:17:34,941 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-01-08 22:17:34,941 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 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 30 treesize of output 25 [2025-01-08 22:17:34,974 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 22:17:34,986 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-01-08 22:17:34,987 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 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 30 treesize of output 25 [2025-01-08 22:17:35,000 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 22:17:35,011 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-01-08 22:17:35,011 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 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 18 [2025-01-08 22:17:35,027 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 22:17:35,061 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-01-08 22:17:35,062 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 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 37 treesize of output 35 [2025-01-08 22:17:35,104 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-01-08 22:17:35,104 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 22:17:35,144 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-01-08 22:17:35,145 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 10 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 44 treesize of output 45 [2025-01-08 22:17:35,199 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-01-08 22:17:35,199 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 33 treesize of output 38 [2025-01-08 22:17:35,252 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-01-08 22:17:35,252 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 6 select indices, 6 select index equivalence classes, 15 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 15 case distinctions, treesize of input 51 treesize of output 55 [2025-01-08 22:17:35,310 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-01-08 22:17:35,311 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 10 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 40 treesize of output 48 [2025-01-08 22:17:35,367 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-01-08 22:17:35,367 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 7 select indices, 7 select index equivalence classes, 21 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 21 case distinctions, treesize of input 58 treesize of output 65 [2025-01-08 22:17:35,427 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-01-08 22:17:35,427 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 15 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 47 treesize of output 58 [2025-01-08 22:17:35,479 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-01-08 22:17:35,479 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 7 select indices, 7 select index equivalence classes, 21 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 21 case distinctions, treesize of input 65 treesize of output 68 [2025-01-08 22:17:36,580 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-01-08 22:17:36,580 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 6 select indices, 6 select index equivalence classes, 15 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 15 case distinctions, treesize of input 50 treesize of output 22 [2025-01-08 22:17:36,606 INFO L134 CoverageAnalysis]: Checked inductivity of 483 backedges. 24 proven. 459 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-08 22:17:36,606 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-01-08 22:17:37,520 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 19 treesize of output 17 [2025-01-08 22:17:37,522 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 22:17:37,751 INFO L134 CoverageAnalysis]: Checked inductivity of 483 backedges. 24 proven. 389 refuted. 0 times theorem prover too weak. 70 trivial. 0 not checked. [2025-01-08 22:17:37,751 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [927991100] provided 0 perfect and 2 imperfect interpolant sequences [2025-01-08 22:17:37,751 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-01-08 22:17:37,751 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [36, 37, 23] total 91 [2025-01-08 22:17:37,751 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [584134834] [2025-01-08 22:17:37,751 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-01-08 22:17:37,752 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 91 states [2025-01-08 22:17:37,752 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-08 22:17:37,752 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 91 interpolants. [2025-01-08 22:17:37,753 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=483, Invalid=7707, Unknown=0, NotChecked=0, Total=8190 [2025-01-08 22:17:37,753 INFO L87 Difference]: Start difference. First operand 120 states and 128 transitions. Second operand has 91 states, 91 states have (on average 3.4505494505494507) internal successors, (314), 91 states have internal predecessors, (314), 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 22:18:08,989 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-08 22:18:08,989 INFO L93 Difference]: Finished difference Result 1178 states and 1306 transitions. [2025-01-08 22:18:08,990 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 496 states. [2025-01-08 22:18:08,990 INFO L78 Accepts]: Start accepts. Automaton has has 91 states, 91 states have (on average 3.4505494505494507) internal successors, (314), 91 states have internal predecessors, (314), 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 119 [2025-01-08 22:18:08,993 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-08 22:18:08,996 INFO L225 Difference]: With dead ends: 1178 [2025-01-08 22:18:08,996 INFO L226 Difference]: Without dead ends: 1093 [2025-01-08 22:18:09,013 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 778 GetRequests, 181 SyntacticMatches, 15 SemanticMatches, 582 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 136077 ImplicationChecksByTransitivity, 29.4s TimeCoverageRelationStatistics Valid=18053, Invalid=322419, Unknown=0, NotChecked=0, Total=340472 [2025-01-08 22:18:09,014 INFO L435 NwaCegarLoop]: 28 mSDtfsCounter, 4915 mSDsluCounter, 1123 mSDsCounter, 0 mSdLazyCounter, 8322 mSolverCounterSat, 2288 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4915 SdHoareTripleChecker+Valid, 1151 SdHoareTripleChecker+Invalid, 10610 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2288 IncrementalHoareTripleChecker+Valid, 8322 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.8s IncrementalHoareTripleChecker+Time [2025-01-08 22:18:09,014 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [4915 Valid, 1151 Invalid, 10610 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2288 Valid, 8322 Invalid, 0 Unknown, 0 Unchecked, 3.8s Time] [2025-01-08 22:18:09,015 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1093 states. [2025-01-08 22:18:09,069 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1093 to 197. [2025-01-08 22:18:09,069 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 197 states, 196 states have (on average 1.0918367346938775) internal successors, (214), 196 states have internal predecessors, (214), 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 22:18:09,074 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 197 states to 197 states and 214 transitions. [2025-01-08 22:18:09,074 INFO L78 Accepts]: Start accepts. Automaton has 197 states and 214 transitions. Word has length 119 [2025-01-08 22:18:09,074 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-08 22:18:09,075 INFO L471 AbstractCegarLoop]: Abstraction has 197 states and 214 transitions. [2025-01-08 22:18:09,075 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 91 states, 91 states have (on average 3.4505494505494507) internal successors, (314), 91 states have internal predecessors, (314), 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 22:18:09,075 INFO L276 IsEmpty]: Start isEmpty. Operand 197 states and 214 transitions. [2025-01-08 22:18:09,075 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2025-01-08 22:18:09,075 INFO L210 NwaCegarLoop]: Found error trace [2025-01-08 22:18:09,075 INFO L218 NwaCegarLoop]: trace histogram [14, 14, 13, 13, 9, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-08 22:18:09,082 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 22:18:09,276 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,16 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-08 22:18:09,276 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-01-08 22:18:09,276 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-08 22:18:09,277 INFO L85 PathProgramCache]: Analyzing trace with hash -1276385255, now seen corresponding path program 15 times [2025-01-08 22:18:09,277 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-08 22:18:09,277 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [493988823] [2025-01-08 22:18:09,277 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-01-08 22:18:09,277 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-08 22:18:09,290 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 124 statements into 14 equivalence classes. [2025-01-08 22:18:09,343 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 14 check-sat command(s) and asserted 124 of 124 statements. [2025-01-08 22:18:09,344 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 14 check-sat command(s) [2025-01-08 22:18:09,344 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat