./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/array-tiling/mbpr2.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/mbpr2.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 a98ea70d5d9f752732070144a56514c68e9571f139726211e2f0ade721d6c5f3 --- Real Ultimate output --- This is Ultimate 0.3.0-?-551b009-m [2025-01-08 22:16:26,449 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-01-08 22:16:26,522 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2025-01-08 22:16:26,527 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-01-08 22:16:26,527 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-01-08 22:16:26,547 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-01-08 22:16:26,548 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-01-08 22:16:26,549 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-01-08 22:16:26,549 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-01-08 22:16:26,549 INFO L153 SettingsManager]: * Use memory slicer=true [2025-01-08 22:16:26,549 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-01-08 22:16:26,550 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-01-08 22:16:26,550 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-01-08 22:16:26,550 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-01-08 22:16:26,551 INFO L153 SettingsManager]: * Use SBE=true [2025-01-08 22:16:26,551 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-01-08 22:16:26,551 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2025-01-08 22:16:26,552 INFO L153 SettingsManager]: * sizeof long=4 [2025-01-08 22:16:26,552 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-01-08 22:16:26,552 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-01-08 22:16:26,552 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-01-08 22:16:26,552 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2025-01-08 22:16:26,552 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-01-08 22:16:26,552 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2025-01-08 22:16:26,552 INFO L153 SettingsManager]: * sizeof long double=12 [2025-01-08 22:16:26,552 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2025-01-08 22:16:26,552 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-01-08 22:16:26,552 INFO L153 SettingsManager]: * Use constant arrays=true [2025-01-08 22:16:26,552 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-01-08 22:16:26,552 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-01-08 22:16:26,552 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-01-08 22:16:26,552 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-01-08 22:16:26,552 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-01-08 22:16:26,552 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2025-01-08 22:16:26,553 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-01-08 22:16:26,553 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-01-08 22:16:26,553 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-01-08 22:16:26,553 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-01-08 22:16:26,553 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-01-08 22:16:26,553 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-01-08 22:16:26,553 INFO L153 SettingsManager]: * Compute procedure contracts=false [2025-01-08 22:16:26,553 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2025-01-08 22:16:26,553 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-01-08 22:16:26,553 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2025-01-08 22:16:26,553 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2025-01-08 22:16:26,553 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-01-08 22:16:26,553 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-01-08 22:16:26,553 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-01-08 22:16:26,553 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 -> a98ea70d5d9f752732070144a56514c68e9571f139726211e2f0ade721d6c5f3 [2025-01-08 22:16:26,819 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-01-08 22:16:26,829 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-01-08 22:16:26,831 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-01-08 22:16:26,833 INFO L270 PluginConnector]: Initializing CDTParser... [2025-01-08 22:16:26,833 INFO L274 PluginConnector]: CDTParser initialized [2025-01-08 22:16:26,835 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/array-tiling/mbpr2.c [2025-01-08 22:16:28,070 INFO L533 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/da1b7cc35/c55bc521a85d45b4aa874c2108dde56a/FLAG3990b3301 [2025-01-08 22:16:28,348 INFO L384 CDTParser]: Found 1 translation units. [2025-01-08 22:16:28,349 INFO L180 CDTParser]: Scanning /storage/repos/ultimate-jdk21/releaseScripts/default/sv-benchmarks/c/array-tiling/mbpr2.c [2025-01-08 22:16:28,364 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/da1b7cc35/c55bc521a85d45b4aa874c2108dde56a/FLAG3990b3301 [2025-01-08 22:16:28,664 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/da1b7cc35/c55bc521a85d45b4aa874c2108dde56a [2025-01-08 22:16:28,666 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-01-08 22:16:28,668 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2025-01-08 22:16:28,669 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-01-08 22:16:28,669 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-01-08 22:16:28,672 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-01-08 22:16:28,673 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.01 10:16:28" (1/1) ... [2025-01-08 22:16:28,674 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@fb25d10 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.01 10:16:28, skipping insertion in model container [2025-01-08 22:16:28,674 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.01 10:16:28" (1/1) ... [2025-01-08 22:16:28,686 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-01-08 22:16:28,810 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/mbpr2.c[396,409] [2025-01-08 22:16:28,836 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-01-08 22:16:28,845 INFO L200 MainTranslator]: Completed pre-run [2025-01-08 22:16:28,857 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/mbpr2.c[396,409] [2025-01-08 22:16:28,866 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-01-08 22:16:28,880 INFO L204 MainTranslator]: Completed translation [2025-01-08 22:16:28,882 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.01 10:16:28 WrapperNode [2025-01-08 22:16:28,882 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-01-08 22:16:28,883 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-01-08 22:16:28,884 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-01-08 22:16:28,884 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-01-08 22:16:28,892 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.01 10:16:28" (1/1) ... [2025-01-08 22:16:28,897 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.01 10:16:28" (1/1) ... [2025-01-08 22:16:28,918 INFO L138 Inliner]: procedures = 15, calls = 30, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 83 [2025-01-08 22:16:28,921 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-01-08 22:16:28,921 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-01-08 22:16:28,921 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-01-08 22:16:28,922 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-01-08 22:16:28,929 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.01 10:16:28" (1/1) ... [2025-01-08 22:16:28,930 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.01 10:16:28" (1/1) ... [2025-01-08 22:16:28,933 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.01 10:16:28" (1/1) ... [2025-01-08 22:16:28,945 INFO L175 MemorySlicer]: Split 20 memory accesses to 3 slices as follows [2, 8, 10]. 50 percent of accesses are in the largest equivalence class. The 10 initializations are split as follows [2, 8, 0]. The 6 writes are split as follows [0, 0, 6]. [2025-01-08 22:16:28,949 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.01 10:16:28" (1/1) ... [2025-01-08 22:16:28,949 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.01 10:16:28" (1/1) ... [2025-01-08 22:16:28,956 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.01 10:16:28" (1/1) ... [2025-01-08 22:16:28,961 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.01 10:16:28" (1/1) ... [2025-01-08 22:16:28,963 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.01 10:16:28" (1/1) ... [2025-01-08 22:16:28,964 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.01 10:16:28" (1/1) ... [2025-01-08 22:16:28,965 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.01 10:16:28" (1/1) ... [2025-01-08 22:16:28,966 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-01-08 22:16:28,970 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2025-01-08 22:16:28,970 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2025-01-08 22:16:28,970 INFO L274 PluginConnector]: RCFGBuilder initialized [2025-01-08 22:16:28,971 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.01 10:16:28" (1/1) ... [2025-01-08 22:16:28,979 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-01-08 22:16:28,994 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-08 22:16:29,006 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 22:16:29,008 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 22:16:29,027 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2025-01-08 22:16:29,027 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2025-01-08 22:16:29,028 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2025-01-08 22:16:29,028 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2025-01-08 22:16:29,028 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2025-01-08 22:16:29,028 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2025-01-08 22:16:29,028 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2025-01-08 22:16:29,028 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2025-01-08 22:16:29,029 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-01-08 22:16:29,029 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-01-08 22:16:29,029 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2025-01-08 22:16:29,029 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2025-01-08 22:16:29,029 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2025-01-08 22:16:29,030 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2025-01-08 22:16:29,092 INFO L234 CfgBuilder]: Building ICFG [2025-01-08 22:16:29,093 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2025-01-08 22:16:29,215 INFO L? ?]: Removed 10 outVars from TransFormulas that were not future-live. [2025-01-08 22:16:29,215 INFO L283 CfgBuilder]: Performing block encoding [2025-01-08 22:16:29,222 INFO L307 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-01-08 22:16:29,222 INFO L312 CfgBuilder]: Removed 0 assume(true) statements. [2025-01-08 22:16:29,222 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 08.01 10:16:29 BoogieIcfgContainer [2025-01-08 22:16:29,223 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2025-01-08 22:16:29,225 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2025-01-08 22:16:29,225 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2025-01-08 22:16:29,228 INFO L274 PluginConnector]: TraceAbstraction initialized [2025-01-08 22:16:29,228 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 08.01 10:16:28" (1/3) ... [2025-01-08 22:16:29,229 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7d9c4dc1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.01 10:16:29, skipping insertion in model container [2025-01-08 22:16:29,229 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.01 10:16:28" (2/3) ... [2025-01-08 22:16:29,229 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7d9c4dc1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.01 10:16:29, skipping insertion in model container [2025-01-08 22:16:29,229 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 08.01 10:16:29" (3/3) ... [2025-01-08 22:16:29,230 INFO L128 eAbstractionObserver]: Analyzing ICFG mbpr2.c [2025-01-08 22:16:29,241 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2025-01-08 22:16:29,242 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG mbpr2.c that has 1 procedures, 23 locations, 1 initial locations, 3 loop locations, and 1 error locations. [2025-01-08 22:16:29,281 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-01-08 22:16:29,290 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;@498d90f1, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-01-08 22:16:29,290 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2025-01-08 22:16:29,293 INFO L276 IsEmpty]: Start isEmpty. Operand has 23 states, 21 states have (on average 1.5238095238095237) internal successors, (32), 22 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 22:16:29,296 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2025-01-08 22:16:29,296 INFO L210 NwaCegarLoop]: Found error trace [2025-01-08 22:16:29,297 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-08 22:16:29,297 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-01-08 22:16:29,301 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-08 22:16:29,301 INFO L85 PathProgramCache]: Analyzing trace with hash 1359858844, now seen corresponding path program 1 times [2025-01-08 22:16:29,307 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-08 22:16:29,308 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [270153730] [2025-01-08 22:16:29,308 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-08 22:16:29,308 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-08 22:16:29,373 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 13 statements into 1 equivalence classes. [2025-01-08 22:16:29,397 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 13 of 13 statements. [2025-01-08 22:16:29,397 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-08 22:16:29,397 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-08 22:16:29,479 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 22:16:29,480 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-08 22:16:29,480 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [270153730] [2025-01-08 22:16:29,481 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [270153730] provided 1 perfect and 0 imperfect interpolant sequences [2025-01-08 22:16:29,481 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-01-08 22:16:29,481 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-01-08 22:16:29,482 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [632776750] [2025-01-08 22:16:29,487 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-01-08 22:16:29,489 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2025-01-08 22:16:29,489 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-08 22:16:29,506 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2025-01-08 22:16:29,506 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2025-01-08 22:16:29,508 INFO L87 Difference]: Start difference. First operand has 23 states, 21 states have (on average 1.5238095238095237) internal successors, (32), 22 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) Second operand has 2 states, 2 states have (on average 6.5) internal successors, (13), 2 states have internal predecessors, (13), 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 22:16:29,520 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-08 22:16:29,521 INFO L93 Difference]: Finished difference Result 41 states and 56 transitions. [2025-01-08 22:16:29,521 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2025-01-08 22:16:29,523 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 6.5) internal successors, (13), 2 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 13 [2025-01-08 22:16:29,523 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-08 22:16:29,529 INFO L225 Difference]: With dead ends: 41 [2025-01-08 22:16:29,529 INFO L226 Difference]: Without dead ends: 19 [2025-01-08 22:16:29,531 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 22:16:29,536 INFO L435 NwaCegarLoop]: 30 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, 30 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 22:16:29,538 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 30 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-01-08 22:16:29,551 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19 states. [2025-01-08 22:16:29,558 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19 to 19. [2025-01-08 22:16:29,559 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19 states, 18 states have (on average 1.3333333333333333) internal successors, (24), 18 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-08 22:16:29,563 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 24 transitions. [2025-01-08 22:16:29,564 INFO L78 Accepts]: Start accepts. Automaton has 19 states and 24 transitions. Word has length 13 [2025-01-08 22:16:29,565 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-08 22:16:29,565 INFO L471 AbstractCegarLoop]: Abstraction has 19 states and 24 transitions. [2025-01-08 22:16:29,566 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 6.5) internal successors, (13), 2 states have internal predecessors, (13), 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 22:16:29,566 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 24 transitions. [2025-01-08 22:16:29,567 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2025-01-08 22:16:29,567 INFO L210 NwaCegarLoop]: Found error trace [2025-01-08 22:16:29,567 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-08 22:16:29,567 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2025-01-08 22:16:29,567 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-01-08 22:16:29,568 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-08 22:16:29,569 INFO L85 PathProgramCache]: Analyzing trace with hash 2039917214, now seen corresponding path program 1 times [2025-01-08 22:16:29,569 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-08 22:16:29,569 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1787677202] [2025-01-08 22:16:29,569 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-08 22:16:29,569 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-08 22:16:29,585 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 13 statements into 1 equivalence classes. [2025-01-08 22:16:29,616 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 13 of 13 statements. [2025-01-08 22:16:29,616 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-08 22:16:29,616 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-08 22:16:29,778 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 22:16:29,779 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-08 22:16:29,779 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1787677202] [2025-01-08 22:16:29,779 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1787677202] provided 1 perfect and 0 imperfect interpolant sequences [2025-01-08 22:16:29,779 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-01-08 22:16:29,779 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-01-08 22:16:29,779 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [574934015] [2025-01-08 22:16:29,779 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-01-08 22:16:29,780 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-01-08 22:16:29,781 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-08 22:16:29,781 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-01-08 22:16:29,781 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-01-08 22:16:29,782 INFO L87 Difference]: Start difference. First operand 19 states and 24 transitions. Second operand has 4 states, 4 states have (on average 3.25) internal successors, (13), 4 states have internal predecessors, (13), 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 22:16:29,802 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-08 22:16:29,802 INFO L93 Difference]: Finished difference Result 23 states and 28 transitions. [2025-01-08 22:16:29,803 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-01-08 22:16:29,803 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 3.25) internal successors, (13), 4 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 13 [2025-01-08 22:16:29,803 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-08 22:16:29,803 INFO L225 Difference]: With dead ends: 23 [2025-01-08 22:16:29,803 INFO L226 Difference]: Without dead ends: 21 [2025-01-08 22:16:29,804 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 22:16:29,804 INFO L435 NwaCegarLoop]: 22 mSDtfsCounter, 0 mSDsluCounter, 37 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 59 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 22:16:29,805 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 59 Invalid, 12 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-01-08 22:16:29,805 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21 states. [2025-01-08 22:16:29,807 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21 to 21. [2025-01-08 22:16:29,807 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21 states, 20 states have (on average 1.3) internal successors, (26), 20 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-08 22:16:29,807 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 26 transitions. [2025-01-08 22:16:29,808 INFO L78 Accepts]: Start accepts. Automaton has 21 states and 26 transitions. Word has length 13 [2025-01-08 22:16:29,808 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-08 22:16:29,808 INFO L471 AbstractCegarLoop]: Abstraction has 21 states and 26 transitions. [2025-01-08 22:16:29,808 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 3.25) internal successors, (13), 4 states have internal predecessors, (13), 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 22:16:29,808 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states and 26 transitions. [2025-01-08 22:16:29,809 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2025-01-08 22:16:29,809 INFO L210 NwaCegarLoop]: Found error trace [2025-01-08 22:16:29,809 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-08 22:16:29,809 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2025-01-08 22:16:29,809 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-01-08 22:16:29,810 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-08 22:16:29,810 INFO L85 PathProgramCache]: Analyzing trace with hash 2039976796, now seen corresponding path program 1 times [2025-01-08 22:16:29,810 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-08 22:16:29,810 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [192295897] [2025-01-08 22:16:29,810 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-08 22:16:29,810 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-08 22:16:29,819 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 13 statements into 1 equivalence classes. [2025-01-08 22:16:29,828 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 13 of 13 statements. [2025-01-08 22:16:29,828 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-08 22:16:29,829 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-08 22:16:30,042 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 22:16:30,042 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-08 22:16:30,042 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [192295897] [2025-01-08 22:16:30,042 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [192295897] provided 1 perfect and 0 imperfect interpolant sequences [2025-01-08 22:16:30,043 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-01-08 22:16:30,043 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2025-01-08 22:16:30,043 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1839791621] [2025-01-08 22:16:30,043 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-01-08 22:16:30,043 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-01-08 22:16:30,043 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-08 22:16:30,044 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-01-08 22:16:30,044 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2025-01-08 22:16:30,044 INFO L87 Difference]: Start difference. First operand 21 states and 26 transitions. Second operand has 5 states, 5 states have (on average 2.6) internal successors, (13), 5 states have internal predecessors, (13), 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 22:16:30,107 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-08 22:16:30,107 INFO L93 Difference]: Finished difference Result 39 states and 51 transitions. [2025-01-08 22:16:30,107 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-01-08 22:16:30,108 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.6) internal successors, (13), 5 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 13 [2025-01-08 22:16:30,108 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-08 22:16:30,108 INFO L225 Difference]: With dead ends: 39 [2025-01-08 22:16:30,108 INFO L226 Difference]: Without dead ends: 27 [2025-01-08 22:16:30,109 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 22:16:30,109 INFO L435 NwaCegarLoop]: 12 mSDtfsCounter, 32 mSDsluCounter, 6 mSDsCounter, 0 mSdLazyCounter, 30 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 32 SdHoareTripleChecker+Valid, 18 SdHoareTripleChecker+Invalid, 32 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 30 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-01-08 22:16:30,110 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [32 Valid, 18 Invalid, 32 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 30 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-01-08 22:16:30,110 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2025-01-08 22:16:30,113 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 23. [2025-01-08 22:16:30,113 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23 states, 22 states have (on average 1.2727272727272727) internal successors, (28), 22 states have internal predecessors, (28), 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 22:16:30,113 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 28 transitions. [2025-01-08 22:16:30,114 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 28 transitions. Word has length 13 [2025-01-08 22:16:30,114 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-08 22:16:30,114 INFO L471 AbstractCegarLoop]: Abstraction has 23 states and 28 transitions. [2025-01-08 22:16:30,114 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.6) internal successors, (13), 5 states have internal predecessors, (13), 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 22:16:30,114 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 28 transitions. [2025-01-08 22:16:30,114 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2025-01-08 22:16:30,114 INFO L210 NwaCegarLoop]: Found error trace [2025-01-08 22:16:30,115 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-08 22:16:30,115 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2025-01-08 22:16:30,115 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-01-08 22:16:30,115 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-08 22:16:30,115 INFO L85 PathProgramCache]: Analyzing trace with hash -1007292097, now seen corresponding path program 1 times [2025-01-08 22:16:30,116 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-08 22:16:30,116 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [735680135] [2025-01-08 22:16:30,116 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-08 22:16:30,116 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-08 22:16:30,126 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 19 statements into 1 equivalence classes. [2025-01-08 22:16:30,142 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 19 of 19 statements. [2025-01-08 22:16:30,142 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-08 22:16:30,142 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-08 22:16:30,243 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-01-08 22:16:30,243 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-08 22:16:30,243 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [735680135] [2025-01-08 22:16:30,243 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [735680135] provided 1 perfect and 0 imperfect interpolant sequences [2025-01-08 22:16:30,243 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-01-08 22:16:30,243 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-01-08 22:16:30,244 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1421461422] [2025-01-08 22:16:30,244 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-01-08 22:16:30,244 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-01-08 22:16:30,244 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-08 22:16:30,245 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-01-08 22:16:30,245 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-01-08 22:16:30,245 INFO L87 Difference]: Start difference. First operand 23 states and 28 transitions. Second operand has 3 states, 3 states have (on average 6.333333333333333) internal successors, (19), 3 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-08 22:16:30,256 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-08 22:16:30,256 INFO L93 Difference]: Finished difference Result 35 states and 43 transitions. [2025-01-08 22:16:30,256 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-01-08 22:16:30,256 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 6.333333333333333) internal successors, (19), 3 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2025-01-08 22:16:30,257 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-08 22:16:30,257 INFO L225 Difference]: With dead ends: 35 [2025-01-08 22:16:30,257 INFO L226 Difference]: Without dead ends: 23 [2025-01-08 22:16:30,257 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 22:16:30,258 INFO L435 NwaCegarLoop]: 19 mSDtfsCounter, 12 mSDsluCounter, 1 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 20 SdHoareTripleChecker+Invalid, 5 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-01-08 22:16:30,258 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 20 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-01-08 22:16:30,259 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2025-01-08 22:16:30,261 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 23. [2025-01-08 22:16:30,262 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23 states, 22 states have (on average 1.2272727272727273) internal successors, (27), 22 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-08 22:16:30,262 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 27 transitions. [2025-01-08 22:16:30,262 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 27 transitions. Word has length 19 [2025-01-08 22:16:30,262 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-08 22:16:30,262 INFO L471 AbstractCegarLoop]: Abstraction has 23 states and 27 transitions. [2025-01-08 22:16:30,263 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 6.333333333333333) internal successors, (19), 3 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-08 22:16:30,263 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 27 transitions. [2025-01-08 22:16:30,264 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2025-01-08 22:16:30,264 INFO L210 NwaCegarLoop]: Found error trace [2025-01-08 22:16:30,264 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-08 22:16:30,265 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2025-01-08 22:16:30,265 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-01-08 22:16:30,265 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-08 22:16:30,265 INFO L85 PathProgramCache]: Analyzing trace with hash -1816638723, now seen corresponding path program 1 times [2025-01-08 22:16:30,265 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-08 22:16:30,265 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [436238231] [2025-01-08 22:16:30,266 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-08 22:16:30,266 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-08 22:16:30,278 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 19 statements into 1 equivalence classes. [2025-01-08 22:16:30,298 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 19 of 19 statements. [2025-01-08 22:16:30,298 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-08 22:16:30,298 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-08 22:16:30,938 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-08 22:16:30,939 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-08 22:16:30,939 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [436238231] [2025-01-08 22:16:30,939 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [436238231] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-08 22:16:30,939 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [265694020] [2025-01-08 22:16:30,940 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-08 22:16:30,940 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-08 22:16:30,940 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-08 22:16:30,943 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 22:16:30,945 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 22:16:30,989 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 19 statements into 1 equivalence classes. [2025-01-08 22:16:31,010 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 19 of 19 statements. [2025-01-08 22:16:31,011 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-08 22:16:31,011 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-08 22:16:31,013 INFO L256 TraceCheckSpWp]: Trace formula consists of 114 conjuncts, 21 conjuncts are in the unsatisfiable core [2025-01-08 22:16:31,017 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-08 22:16:31,131 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 22:16:31,176 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 22:16:31,225 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 22:16:31,272 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-01-08 22:16:31,273 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 21 [2025-01-08 22:16:31,367 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-01-08 22:16:31,368 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 22:16:31,397 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-08 22:16:31,397 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-01-08 22:16:31,486 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 22:16:31,489 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 22:16:31,538 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-01-08 22:16:31,539 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [265694020] provided 0 perfect and 2 imperfect interpolant sequences [2025-01-08 22:16:31,539 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-01-08 22:16:31,541 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 10, 7] total 20 [2025-01-08 22:16:31,541 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [461571765] [2025-01-08 22:16:31,541 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-01-08 22:16:31,541 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2025-01-08 22:16:31,541 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-08 22:16:31,542 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2025-01-08 22:16:31,542 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=73, Invalid=307, Unknown=0, NotChecked=0, Total=380 [2025-01-08 22:16:31,543 INFO L87 Difference]: Start difference. First operand 23 states and 27 transitions. Second operand has 20 states, 20 states have (on average 2.3) internal successors, (46), 20 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-08 22:16:31,835 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-08 22:16:31,835 INFO L93 Difference]: Finished difference Result 57 states and 68 transitions. [2025-01-08 22:16:31,836 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2025-01-08 22:16:31,836 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 2.3) internal successors, (46), 20 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2025-01-08 22:16:31,836 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-08 22:16:31,836 INFO L225 Difference]: With dead ends: 57 [2025-01-08 22:16:31,837 INFO L226 Difference]: Without dead ends: 41 [2025-01-08 22:16:31,837 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 28 SyntacticMatches, 1 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 158 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=190, Invalid=566, Unknown=0, NotChecked=0, Total=756 [2025-01-08 22:16:31,838 INFO L435 NwaCegarLoop]: 15 mSDtfsCounter, 148 mSDsluCounter, 70 mSDsCounter, 0 mSdLazyCounter, 164 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 148 SdHoareTripleChecker+Valid, 85 SdHoareTripleChecker+Invalid, 185 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 164 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-01-08 22:16:31,838 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [148 Valid, 85 Invalid, 185 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 164 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-01-08 22:16:31,838 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41 states. [2025-01-08 22:16:31,842 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41 to 25. [2025-01-08 22:16:31,842 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25 states, 24 states have (on average 1.1666666666666667) internal successors, (28), 24 states have internal predecessors, (28), 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 22:16:31,842 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 28 transitions. [2025-01-08 22:16:31,843 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 28 transitions. Word has length 19 [2025-01-08 22:16:31,843 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-08 22:16:31,843 INFO L471 AbstractCegarLoop]: Abstraction has 25 states and 28 transitions. [2025-01-08 22:16:31,843 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 2.3) internal successors, (46), 20 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-08 22:16:31,843 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 28 transitions. [2025-01-08 22:16:31,844 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2025-01-08 22:16:31,844 INFO L210 NwaCegarLoop]: Found error trace [2025-01-08 22:16:31,844 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] [2025-01-08 22:16:31,853 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2025-01-08 22:16:32,044 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,2 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-08 22:16:32,045 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-01-08 22:16:32,045 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-08 22:16:32,045 INFO L85 PathProgramCache]: Analyzing trace with hash -523413932, now seen corresponding path program 1 times [2025-01-08 22:16:32,045 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-08 22:16:32,045 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1340462381] [2025-01-08 22:16:32,045 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-08 22:16:32,046 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-08 22:16:32,054 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 24 statements into 1 equivalence classes. [2025-01-08 22:16:32,071 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 24 of 24 statements. [2025-01-08 22:16:32,072 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-08 22:16:32,072 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-08 22:16:32,381 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-01-08 22:16:32,381 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-08 22:16:32,381 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1340462381] [2025-01-08 22:16:32,381 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1340462381] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-08 22:16:32,381 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1953777037] [2025-01-08 22:16:32,382 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-08 22:16:32,382 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-08 22:16:32,382 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-08 22:16:32,384 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 22:16:32,386 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 22:16:32,422 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 24 statements into 1 equivalence classes. [2025-01-08 22:16:32,440 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 24 of 24 statements. [2025-01-08 22:16:32,440 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-08 22:16:32,441 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-08 22:16:32,442 INFO L256 TraceCheckSpWp]: Trace formula consists of 126 conjuncts, 27 conjuncts are in the unsatisfiable core [2025-01-08 22:16:32,444 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-08 22:16:32,465 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 22:16:32,474 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-01-08 22:16:32,474 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 23 treesize of output 18 [2025-01-08 22:16:32,562 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-01-08 22:16:32,562 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-01-08 22:16:32,656 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 22:16:32,658 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 22:16:32,674 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-01-08 22:16:32,674 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1953777037] provided 0 perfect and 2 imperfect interpolant sequences [2025-01-08 22:16:32,674 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-01-08 22:16:32,674 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 11, 10] total 18 [2025-01-08 22:16:32,675 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1089598964] [2025-01-08 22:16:32,675 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-01-08 22:16:32,675 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2025-01-08 22:16:32,675 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-08 22:16:32,675 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2025-01-08 22:16:32,676 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=69, Invalid=237, Unknown=0, NotChecked=0, Total=306 [2025-01-08 22:16:32,676 INFO L87 Difference]: Start difference. First operand 25 states and 28 transitions. Second operand has 18 states, 18 states have (on average 2.6666666666666665) internal successors, (48), 18 states have internal predecessors, (48), 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 22:16:32,829 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-08 22:16:32,829 INFO L93 Difference]: Finished difference Result 41 states and 45 transitions. [2025-01-08 22:16:32,830 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2025-01-08 22:16:32,830 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 2.6666666666666665) internal successors, (48), 18 states have internal predecessors, (48), 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 24 [2025-01-08 22:16:32,830 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-08 22:16:32,830 INFO L225 Difference]: With dead ends: 41 [2025-01-08 22:16:32,830 INFO L226 Difference]: Without dead ends: 39 [2025-01-08 22:16:32,831 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 40 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 109 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=107, Invalid=355, Unknown=0, NotChecked=0, Total=462 [2025-01-08 22:16:32,831 INFO L435 NwaCegarLoop]: 13 mSDtfsCounter, 32 mSDsluCounter, 55 mSDsCounter, 0 mSdLazyCounter, 131 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 32 SdHoareTripleChecker+Valid, 68 SdHoareTripleChecker+Invalid, 137 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 131 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-01-08 22:16:32,831 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [32 Valid, 68 Invalid, 137 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 131 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-01-08 22:16:32,832 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39 states. [2025-01-08 22:16:32,838 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 30. [2025-01-08 22:16:32,839 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 30 states, 29 states have (on average 1.1724137931034482) internal successors, (34), 29 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 22:16:32,839 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 34 transitions. [2025-01-08 22:16:32,839 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 34 transitions. Word has length 24 [2025-01-08 22:16:32,842 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-08 22:16:32,842 INFO L471 AbstractCegarLoop]: Abstraction has 30 states and 34 transitions. [2025-01-08 22:16:32,842 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 2.6666666666666665) internal successors, (48), 18 states have internal predecessors, (48), 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 22:16:32,842 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 34 transitions. [2025-01-08 22:16:32,842 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2025-01-08 22:16:32,842 INFO L210 NwaCegarLoop]: Found error trace [2025-01-08 22:16:32,842 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] [2025-01-08 22:16:32,850 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 22:16:33,043 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 22:16:33,043 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-01-08 22:16:33,043 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-08 22:16:33,043 INFO L85 PathProgramCache]: Analyzing trace with hash -761476771, now seen corresponding path program 2 times [2025-01-08 22:16:33,044 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-08 22:16:33,044 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1798730332] [2025-01-08 22:16:33,044 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-01-08 22:16:33,044 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-08 22:16:33,056 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 29 statements into 2 equivalence classes. [2025-01-08 22:16:33,070 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 29 of 29 statements. [2025-01-08 22:16:33,071 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-01-08 22:16:33,071 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-08 22:16:33,305 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 7 proven. 7 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-01-08 22:16:33,306 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-08 22:16:33,306 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1798730332] [2025-01-08 22:16:33,306 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1798730332] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-08 22:16:33,306 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1199806214] [2025-01-08 22:16:33,306 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-01-08 22:16:33,306 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-08 22:16:33,306 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-08 22:16:33,308 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 22:16:33,311 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 22:16:33,351 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 29 statements into 2 equivalence classes. [2025-01-08 22:16:33,372 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 29 of 29 statements. [2025-01-08 22:16:33,372 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-01-08 22:16:33,372 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-08 22:16:33,373 INFO L256 TraceCheckSpWp]: Trace formula consists of 138 conjuncts, 9 conjuncts are in the unsatisfiable core [2025-01-08 22:16:33,375 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-08 22:16:33,660 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 13 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-01-08 22:16:33,660 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-01-08 22:16:33,800 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 13 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-01-08 22:16:33,800 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1199806214] provided 0 perfect and 2 imperfect interpolant sequences [2025-01-08 22:16:33,800 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-01-08 22:16:33,800 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 9] total 25 [2025-01-08 22:16:33,800 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1880904103] [2025-01-08 22:16:33,800 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-01-08 22:16:33,801 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2025-01-08 22:16:33,801 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-08 22:16:33,802 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2025-01-08 22:16:33,802 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=158, Invalid=442, Unknown=0, NotChecked=0, Total=600 [2025-01-08 22:16:33,802 INFO L87 Difference]: Start difference. First operand 30 states and 34 transitions. Second operand has 25 states, 25 states have (on average 3.0) internal successors, (75), 25 states have internal predecessors, (75), 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 22:16:34,032 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-08 22:16:34,032 INFO L93 Difference]: Finished difference Result 77 states and 88 transitions. [2025-01-08 22:16:34,032 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2025-01-08 22:16:34,033 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 3.0) internal successors, (75), 25 states have internal predecessors, (75), 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 29 [2025-01-08 22:16:34,033 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-08 22:16:34,033 INFO L225 Difference]: With dead ends: 77 [2025-01-08 22:16:34,033 INFO L226 Difference]: Without dead ends: 43 [2025-01-08 22:16:34,034 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 71 GetRequests, 43 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 230 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=251, Invalid=619, Unknown=0, NotChecked=0, Total=870 [2025-01-08 22:16:34,035 INFO L435 NwaCegarLoop]: 13 mSDtfsCounter, 171 mSDsluCounter, 60 mSDsCounter, 0 mSdLazyCounter, 166 mSolverCounterSat, 39 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 171 SdHoareTripleChecker+Valid, 73 SdHoareTripleChecker+Invalid, 205 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 39 IncrementalHoareTripleChecker+Valid, 166 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-01-08 22:16:34,035 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [171 Valid, 73 Invalid, 205 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [39 Valid, 166 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-01-08 22:16:34,036 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43 states. [2025-01-08 22:16:34,041 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43 to 36. [2025-01-08 22:16:34,042 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 36 states, 35 states have (on average 1.1428571428571428) internal successors, (40), 35 states have internal predecessors, (40), 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 22:16:34,042 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 40 transitions. [2025-01-08 22:16:34,043 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 40 transitions. Word has length 29 [2025-01-08 22:16:34,043 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-08 22:16:34,043 INFO L471 AbstractCegarLoop]: Abstraction has 36 states and 40 transitions. [2025-01-08 22:16:34,043 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 3.0) internal successors, (75), 25 states have internal predecessors, (75), 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 22:16:34,043 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 40 transitions. [2025-01-08 22:16:34,043 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2025-01-08 22:16:34,043 INFO L210 NwaCegarLoop]: Found error trace [2025-01-08 22:16:34,043 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-08 22:16:34,051 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 22:16:34,244 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 22:16:34,244 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-01-08 22:16:34,245 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-08 22:16:34,245 INFO L85 PathProgramCache]: Analyzing trace with hash -234297444, now seen corresponding path program 3 times [2025-01-08 22:16:34,245 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-08 22:16:34,245 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1484788799] [2025-01-08 22:16:34,245 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-01-08 22:16:34,245 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-08 22:16:34,255 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 35 statements into 3 equivalence classes. [2025-01-08 22:16:34,273 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) and asserted 35 of 35 statements. [2025-01-08 22:16:34,273 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2025-01-08 22:16:34,273 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-08 22:16:34,877 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 4 proven. 14 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2025-01-08 22:16:34,878 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-08 22:16:34,878 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1484788799] [2025-01-08 22:16:34,878 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1484788799] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-08 22:16:34,878 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [861758118] [2025-01-08 22:16:34,878 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-01-08 22:16:34,878 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-08 22:16:34,878 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-08 22:16:34,880 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 22:16:34,882 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 22:16:34,926 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 35 statements into 3 equivalence classes. [2025-01-08 22:16:34,954 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) and asserted 35 of 35 statements. [2025-01-08 22:16:34,954 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2025-01-08 22:16:34,954 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-08 22:16:34,955 INFO L256 TraceCheckSpWp]: Trace formula consists of 162 conjuncts, 21 conjuncts are in the unsatisfiable core [2025-01-08 22:16:34,957 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-08 22:16:35,017 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 22:16:35,048 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-01-08 22:16:35,048 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 23 treesize of output 18 [2025-01-08 22:16:35,078 INFO L190 IndexEqualityManager]: detected not equals via solver [2025-01-08 22:16:35,079 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 22 [2025-01-08 22:16:35,116 INFO L190 IndexEqualityManager]: detected not equals via solver [2025-01-08 22:16:35,118 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-01-08 22:16:35,118 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 42 treesize of output 36 [2025-01-08 22:16:35,340 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 9 proven. 7 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2025-01-08 22:16:35,340 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-01-08 22:16:35,491 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 42 treesize of output 38 [2025-01-08 22:16:35,494 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 46 treesize of output 42 [2025-01-08 22:16:35,556 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 9 proven. 7 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2025-01-08 22:16:35,557 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [861758118] provided 0 perfect and 2 imperfect interpolant sequences [2025-01-08 22:16:35,557 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-01-08 22:16:35,557 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 11, 10] total 26 [2025-01-08 22:16:35,557 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [698357211] [2025-01-08 22:16:35,557 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-01-08 22:16:35,558 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2025-01-08 22:16:35,558 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-08 22:16:35,558 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2025-01-08 22:16:35,559 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=124, Invalid=526, Unknown=0, NotChecked=0, Total=650 [2025-01-08 22:16:35,559 INFO L87 Difference]: Start difference. First operand 36 states and 40 transitions. Second operand has 26 states, 26 states have (on average 3.0384615384615383) internal successors, (79), 26 states have internal predecessors, (79), 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 22:16:36,128 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-08 22:16:36,128 INFO L93 Difference]: Finished difference Result 60 states and 67 transitions. [2025-01-08 22:16:36,128 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2025-01-08 22:16:36,129 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 26 states have (on average 3.0384615384615383) internal successors, (79), 26 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 35 [2025-01-08 22:16:36,129 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-08 22:16:36,129 INFO L225 Difference]: With dead ends: 60 [2025-01-08 22:16:36,129 INFO L226 Difference]: Without dead ends: 51 [2025-01-08 22:16:36,130 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 99 GetRequests, 60 SyntacticMatches, 0 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 344 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=352, Invalid=1288, Unknown=0, NotChecked=0, Total=1640 [2025-01-08 22:16:36,131 INFO L435 NwaCegarLoop]: 16 mSDtfsCounter, 110 mSDsluCounter, 107 mSDsCounter, 0 mSdLazyCounter, 321 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 110 SdHoareTripleChecker+Valid, 123 SdHoareTripleChecker+Invalid, 340 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 321 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2025-01-08 22:16:36,131 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [110 Valid, 123 Invalid, 340 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 321 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2025-01-08 22:16:36,132 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51 states. [2025-01-08 22:16:36,137 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51 to 41. [2025-01-08 22:16:36,138 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 41 states, 40 states have (on average 1.1) internal successors, (44), 40 states have internal predecessors, (44), 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 22:16:36,138 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 44 transitions. [2025-01-08 22:16:36,138 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 44 transitions. Word has length 35 [2025-01-08 22:16:36,138 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-08 22:16:36,138 INFO L471 AbstractCegarLoop]: Abstraction has 41 states and 44 transitions. [2025-01-08 22:16:36,139 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 3.0384615384615383) internal successors, (79), 26 states have internal predecessors, (79), 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 22:16:36,139 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 44 transitions. [2025-01-08 22:16:36,139 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2025-01-08 22:16:36,139 INFO L210 NwaCegarLoop]: Found error trace [2025-01-08 22:16:36,140 INFO L218 NwaCegarLoop]: trace histogram [4, 4, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-08 22:16:36,147 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 22:16:36,340 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 22:16:36,342 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-01-08 22:16:36,342 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-08 22:16:36,342 INFO L85 PathProgramCache]: Analyzing trace with hash -74688429, now seen corresponding path program 4 times [2025-01-08 22:16:36,342 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-08 22:16:36,343 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1480958290] [2025-01-08 22:16:36,343 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-01-08 22:16:36,343 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-08 22:16:36,352 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 40 statements into 2 equivalence classes. [2025-01-08 22:16:36,368 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 1 check-sat command(s) and asserted 37 of 40 statements. [2025-01-08 22:16:36,370 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 1 check-sat command(s) [2025-01-08 22:16:36,370 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-08 22:16:37,025 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 0 proven. 37 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-08 22:16:37,026 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-08 22:16:37,026 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1480958290] [2025-01-08 22:16:37,027 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1480958290] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-08 22:16:37,027 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [679206688] [2025-01-08 22:16:37,027 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-01-08 22:16:37,027 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-08 22:16:37,027 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-08 22:16:37,030 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 22:16:37,032 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 22:16:37,089 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 40 statements into 2 equivalence classes. [2025-01-08 22:16:37,106 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 1 check-sat command(s) and asserted 37 of 40 statements. [2025-01-08 22:16:37,107 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 1 check-sat command(s) [2025-01-08 22:16:37,107 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-08 22:16:37,108 INFO L256 TraceCheckSpWp]: Trace formula consists of 119 conjuncts, 26 conjuncts are in the unsatisfiable core [2025-01-08 22:16:37,110 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-08 22:16:37,154 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2025-01-08 22:16:37,181 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-01-08 22:16:37,181 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 29 treesize of output 22 [2025-01-08 22:16:37,340 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-01-08 22:16:37,340 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-01-08 22:16:37,462 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 22:16:37,464 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 22:16:37,471 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 0 proven. 32 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2025-01-08 22:16:37,471 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [679206688] provided 0 perfect and 2 imperfect interpolant sequences [2025-01-08 22:16:37,471 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-01-08 22:16:37,471 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 11, 11] total 29 [2025-01-08 22:16:37,471 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2017206366] [2025-01-08 22:16:37,471 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-01-08 22:16:37,471 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2025-01-08 22:16:37,471 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-08 22:16:37,472 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2025-01-08 22:16:37,473 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=111, Invalid=701, Unknown=0, NotChecked=0, Total=812 [2025-01-08 22:16:37,473 INFO L87 Difference]: Start difference. First operand 41 states and 44 transitions. Second operand has 29 states, 29 states have (on average 3.310344827586207) internal successors, (96), 29 states have internal predecessors, (96), 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 22:16:39,134 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-08 22:16:39,134 INFO L93 Difference]: Finished difference Result 152 states and 172 transitions. [2025-01-08 22:16:39,135 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 53 states. [2025-01-08 22:16:39,135 INFO L78 Accepts]: Start accepts. Automaton has has 29 states, 29 states have (on average 3.310344827586207) internal successors, (96), 29 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 40 [2025-01-08 22:16:39,135 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-08 22:16:39,136 INFO L225 Difference]: With dead ends: 152 [2025-01-08 22:16:39,136 INFO L226 Difference]: Without dead ends: 128 [2025-01-08 22:16:39,139 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 150 GetRequests, 72 SyntacticMatches, 1 SemanticMatches, 77 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1841 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=965, Invalid=5197, Unknown=0, NotChecked=0, Total=6162 [2025-01-08 22:16:39,141 INFO L435 NwaCegarLoop]: 15 mSDtfsCounter, 382 mSDsluCounter, 136 mSDsCounter, 0 mSdLazyCounter, 638 mSolverCounterSat, 79 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 382 SdHoareTripleChecker+Valid, 151 SdHoareTripleChecker+Invalid, 717 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 79 IncrementalHoareTripleChecker+Valid, 638 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2025-01-08 22:16:39,141 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [382 Valid, 151 Invalid, 717 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [79 Valid, 638 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2025-01-08 22:16:39,143 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 128 states. [2025-01-08 22:16:39,156 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 128 to 88. [2025-01-08 22:16:39,156 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 88 states, 87 states have (on average 1.1264367816091954) internal successors, (98), 87 states have internal predecessors, (98), 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 22:16:39,157 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 88 states to 88 states and 98 transitions. [2025-01-08 22:16:39,157 INFO L78 Accepts]: Start accepts. Automaton has 88 states and 98 transitions. Word has length 40 [2025-01-08 22:16:39,157 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-08 22:16:39,157 INFO L471 AbstractCegarLoop]: Abstraction has 88 states and 98 transitions. [2025-01-08 22:16:39,158 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 29 states, 29 states have (on average 3.310344827586207) internal successors, (96), 29 states have internal predecessors, (96), 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 22:16:39,158 INFO L276 IsEmpty]: Start isEmpty. Operand 88 states and 98 transitions. [2025-01-08 22:16:39,160 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2025-01-08 22:16:39,160 INFO L210 NwaCegarLoop]: Found error trace [2025-01-08 22:16:39,160 INFO L218 NwaCegarLoop]: trace histogram [5, 5, 4, 4, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-08 22:16:39,168 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2025-01-08 22:16:39,360 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 22:16:39,361 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-01-08 22:16:39,361 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-08 22:16:39,361 INFO L85 PathProgramCache]: Analyzing trace with hash -12964162, now seen corresponding path program 5 times [2025-01-08 22:16:39,361 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-08 22:16:39,361 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1914154454] [2025-01-08 22:16:39,361 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2025-01-08 22:16:39,361 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-08 22:16:39,372 INFO L108 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 partitioned 45 statements into 5 equivalence classes. [2025-01-08 22:16:39,383 INFO L111 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 5 check-sat command(s) and asserted 45 of 45 statements. [2025-01-08 22:16:39,383 INFO L114 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 5 check-sat command(s) [2025-01-08 22:16:39,384 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-08 22:16:39,747 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 28 proven. 23 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2025-01-08 22:16:39,747 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-08 22:16:39,747 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1914154454] [2025-01-08 22:16:39,747 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1914154454] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-08 22:16:39,747 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [26246883] [2025-01-08 22:16:39,747 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2025-01-08 22:16:39,747 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-08 22:16:39,747 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-08 22:16:39,751 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 22:16:39,752 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2025-01-08 22:16:39,798 INFO L108 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 partitioned 45 statements into 5 equivalence classes. [2025-01-08 22:16:39,850 INFO L111 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 5 check-sat command(s) and asserted 45 of 45 statements. [2025-01-08 22:16:39,851 INFO L114 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 5 check-sat command(s) [2025-01-08 22:16:39,851 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-08 22:16:39,852 INFO L256 TraceCheckSpWp]: Trace formula consists of 189 conjuncts, 12 conjuncts are in the unsatisfiable core [2025-01-08 22:16:39,854 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-08 22:16:40,261 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 46 proven. 5 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2025-01-08 22:16:40,261 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-01-08 22:16:40,438 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 46 proven. 5 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2025-01-08 22:16:40,438 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [26246883] provided 0 perfect and 2 imperfect interpolant sequences [2025-01-08 22:16:40,438 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-01-08 22:16:40,439 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 13, 12] total 33 [2025-01-08 22:16:40,439 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [806548320] [2025-01-08 22:16:40,439 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-01-08 22:16:40,439 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2025-01-08 22:16:40,439 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-08 22:16:40,440 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2025-01-08 22:16:40,440 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=260, Invalid=796, Unknown=0, NotChecked=0, Total=1056 [2025-01-08 22:16:40,441 INFO L87 Difference]: Start difference. First operand 88 states and 98 transitions. Second operand has 33 states, 33 states have (on average 3.0606060606060606) internal successors, (101), 33 states have internal predecessors, (101), 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 22:16:40,693 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-08 22:16:40,694 INFO L93 Difference]: Finished difference Result 106 states and 118 transitions. [2025-01-08 22:16:40,694 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2025-01-08 22:16:40,694 INFO L78 Accepts]: Start accepts. Automaton has has 33 states, 33 states have (on average 3.0606060606060606) internal successors, (101), 33 states have internal predecessors, (101), 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 45 [2025-01-08 22:16:40,695 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-08 22:16:40,695 INFO L225 Difference]: With dead ends: 106 [2025-01-08 22:16:40,695 INFO L226 Difference]: Without dead ends: 56 [2025-01-08 22:16:40,696 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 113 GetRequests, 71 SyntacticMatches, 4 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 574 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=439, Invalid=1121, Unknown=0, NotChecked=0, Total=1560 [2025-01-08 22:16:40,697 INFO L435 NwaCegarLoop]: 18 mSDtfsCounter, 169 mSDsluCounter, 126 mSDsCounter, 0 mSdLazyCounter, 321 mSolverCounterSat, 38 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 169 SdHoareTripleChecker+Valid, 144 SdHoareTripleChecker+Invalid, 359 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 38 IncrementalHoareTripleChecker+Valid, 321 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2025-01-08 22:16:40,697 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [169 Valid, 144 Invalid, 359 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [38 Valid, 321 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2025-01-08 22:16:40,699 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56 states. [2025-01-08 22:16:40,705 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56 to 52. [2025-01-08 22:16:40,706 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 52 states, 51 states have (on average 1.0980392156862746) internal successors, (56), 51 states have internal predecessors, (56), 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 22:16:40,706 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 56 transitions. [2025-01-08 22:16:40,707 INFO L78 Accepts]: Start accepts. Automaton has 52 states and 56 transitions. Word has length 45 [2025-01-08 22:16:40,707 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-08 22:16:40,707 INFO L471 AbstractCegarLoop]: Abstraction has 52 states and 56 transitions. [2025-01-08 22:16:40,707 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 33 states, 33 states have (on average 3.0606060606060606) internal successors, (101), 33 states have internal predecessors, (101), 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 22:16:40,707 INFO L276 IsEmpty]: Start isEmpty. Operand 52 states and 56 transitions. [2025-01-08 22:16:40,707 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2025-01-08 22:16:40,707 INFO L210 NwaCegarLoop]: Found error trace [2025-01-08 22:16:40,707 INFO L218 NwaCegarLoop]: trace histogram [5, 5, 4, 4, 3, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-08 22:16:40,716 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 22:16:40,908 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 22:16:40,908 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-01-08 22:16:40,908 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-08 22:16:40,909 INFO L85 PathProgramCache]: Analyzing trace with hash -157640929, now seen corresponding path program 6 times [2025-01-08 22:16:40,909 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-08 22:16:40,909 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [851459952] [2025-01-08 22:16:40,909 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2025-01-08 22:16:40,909 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-08 22:16:40,927 INFO L108 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE partitioned 51 statements into 5 equivalence classes. [2025-01-08 22:16:40,958 INFO L111 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 5 check-sat command(s) and asserted 51 of 51 statements. [2025-01-08 22:16:40,960 INFO L114 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 5 check-sat command(s) [2025-01-08 22:16:40,960 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-08 22:16:41,651 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 24 proven. 43 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2025-01-08 22:16:41,654 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-08 22:16:41,654 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [851459952] [2025-01-08 22:16:41,655 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [851459952] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-08 22:16:41,655 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1970788670] [2025-01-08 22:16:41,655 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2025-01-08 22:16:41,655 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-08 22:16:41,655 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-08 22:16:41,657 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 22:16:41,659 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 22:16:41,710 INFO L108 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE partitioned 51 statements into 5 equivalence classes. [2025-01-08 22:16:41,754 INFO L111 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 5 check-sat command(s) and asserted 51 of 51 statements. [2025-01-08 22:16:41,755 INFO L114 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 5 check-sat command(s) [2025-01-08 22:16:41,755 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-08 22:16:41,756 INFO L256 TraceCheckSpWp]: Trace formula consists of 213 conjuncts, 27 conjuncts are in the unsatisfiable core [2025-01-08 22:16:41,759 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-08 22:16:41,839 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 22:16:41,864 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-01-08 22:16:41,865 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 23 treesize of output 18 [2025-01-08 22:16:41,896 INFO L190 IndexEqualityManager]: detected not equals via solver [2025-01-08 22:16:41,897 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 22 [2025-01-08 22:16:41,928 INFO L190 IndexEqualityManager]: detected not equals via solver [2025-01-08 22:16:41,930 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-01-08 22:16:41,930 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 42 treesize of output 36 [2025-01-08 22:16:42,281 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 23 proven. 33 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2025-01-08 22:16:42,281 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-01-08 22:16:42,452 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 42 treesize of output 38 [2025-01-08 22:16:42,455 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 46 treesize of output 42 [2025-01-08 22:16:42,524 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 23 proven. 33 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2025-01-08 22:16:42,524 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1970788670] provided 0 perfect and 2 imperfect interpolant sequences [2025-01-08 22:16:42,524 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-01-08 22:16:42,524 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 14, 13] total 34 [2025-01-08 22:16:42,525 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1190861286] [2025-01-08 22:16:42,525 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-01-08 22:16:42,525 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2025-01-08 22:16:42,525 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-08 22:16:42,526 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2025-01-08 22:16:42,526 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=209, Invalid=913, Unknown=0, NotChecked=0, Total=1122 [2025-01-08 22:16:42,526 INFO L87 Difference]: Start difference. First operand 52 states and 56 transitions. Second operand has 34 states, 34 states have (on average 3.5) internal successors, (119), 34 states have internal predecessors, (119), 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 22:16:43,000 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-08 22:16:43,000 INFO L93 Difference]: Finished difference Result 72 states and 79 transitions. [2025-01-08 22:16:43,000 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2025-01-08 22:16:43,001 INFO L78 Accepts]: Start accepts. Automaton has has 34 states, 34 states have (on average 3.5) internal successors, (119), 34 states have internal predecessors, (119), 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 51 [2025-01-08 22:16:43,001 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-08 22:16:43,001 INFO L225 Difference]: With dead ends: 72 [2025-01-08 22:16:43,001 INFO L226 Difference]: Without dead ends: 63 [2025-01-08 22:16:43,002 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 133 GetRequests, 88 SyntacticMatches, 0 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 706 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=414, Invalid=1748, Unknown=0, NotChecked=0, Total=2162 [2025-01-08 22:16:43,002 INFO L435 NwaCegarLoop]: 20 mSDtfsCounter, 55 mSDsluCounter, 216 mSDsCounter, 0 mSdLazyCounter, 541 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 55 SdHoareTripleChecker+Valid, 236 SdHoareTripleChecker+Invalid, 556 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 541 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2025-01-08 22:16:43,002 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [55 Valid, 236 Invalid, 556 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 541 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2025-01-08 22:16:43,003 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 63 states. [2025-01-08 22:16:43,013 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 63 to 52. [2025-01-08 22:16:43,013 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 52 states, 51 states have (on average 1.0784313725490196) internal successors, (55), 51 states have internal predecessors, (55), 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 22:16:43,014 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 55 transitions. [2025-01-08 22:16:43,014 INFO L78 Accepts]: Start accepts. Automaton has 52 states and 55 transitions. Word has length 51 [2025-01-08 22:16:43,014 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-08 22:16:43,014 INFO L471 AbstractCegarLoop]: Abstraction has 52 states and 55 transitions. [2025-01-08 22:16:43,014 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 34 states have (on average 3.5) internal successors, (119), 34 states have internal predecessors, (119), 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 22:16:43,015 INFO L276 IsEmpty]: Start isEmpty. Operand 52 states and 55 transitions. [2025-01-08 22:16:43,015 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2025-01-08 22:16:43,015 INFO L210 NwaCegarLoop]: Found error trace [2025-01-08 22:16:43,015 INFO L218 NwaCegarLoop]: trace histogram [5, 5, 4, 4, 3, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-08 22:16:43,021 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 22:16:43,217 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 22:16:43,218 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-01-08 22:16:43,218 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-08 22:16:43,218 INFO L85 PathProgramCache]: Analyzing trace with hash 522417441, now seen corresponding path program 7 times [2025-01-08 22:16:43,218 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-08 22:16:43,218 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [182704603] [2025-01-08 22:16:43,218 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2025-01-08 22:16:43,218 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-08 22:16:43,228 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 51 statements into 1 equivalence classes. [2025-01-08 22:16:43,246 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 51 of 51 statements. [2025-01-08 22:16:43,246 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-08 22:16:43,246 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-08 22:16:43,943 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 8 proven. 50 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2025-01-08 22:16:43,944 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-08 22:16:43,944 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [182704603] [2025-01-08 22:16:43,944 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [182704603] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-08 22:16:43,944 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [980361059] [2025-01-08 22:16:43,944 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2025-01-08 22:16:43,944 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-08 22:16:43,944 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-08 22:16:43,946 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 22:16:43,949 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 22:16:43,998 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 51 statements into 1 equivalence classes. [2025-01-08 22:16:44,025 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 51 of 51 statements. [2025-01-08 22:16:44,025 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-08 22:16:44,025 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-08 22:16:44,027 INFO L256 TraceCheckSpWp]: Trace formula consists of 216 conjuncts, 45 conjuncts are in the unsatisfiable core [2025-01-08 22:16:44,030 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-08 22:16:44,166 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 22:16:44,198 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 22:16:44,253 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 22:16:44,311 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-01-08 22:16:44,312 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 28 [2025-01-08 22:16:44,357 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-01-08 22:16:44,358 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 26 treesize of output 28 [2025-01-08 22:16:44,410 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-01-08 22:16:44,410 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 38 [2025-01-08 22:16:44,466 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-01-08 22:16:44,466 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 22:16:44,522 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-01-08 22:16:44,523 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 41 [2025-01-08 22:16:44,928 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-01-08 22:16:44,929 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 22:16:44,933 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 8 proven. 62 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-08 22:16:44,933 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-01-08 22:16:45,150 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 22:16:45,151 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 22:16:45,254 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 8 proven. 50 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2025-01-08 22:16:45,255 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [980361059] provided 0 perfect and 2 imperfect interpolant sequences [2025-01-08 22:16:45,255 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-01-08 22:16:45,255 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 20, 13] total 41 [2025-01-08 22:16:45,255 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1471291777] [2025-01-08 22:16:45,255 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-01-08 22:16:45,255 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 41 states [2025-01-08 22:16:45,255 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-08 22:16:45,256 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 41 interpolants. [2025-01-08 22:16:45,256 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=164, Invalid=1476, Unknown=0, NotChecked=0, Total=1640 [2025-01-08 22:16:45,256 INFO L87 Difference]: Start difference. First operand 52 states and 55 transitions. Second operand has 41 states, 41 states have (on average 3.1463414634146343) internal successors, (129), 41 states have internal predecessors, (129), 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 22:16:46,210 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-08 22:16:46,210 INFO L93 Difference]: Finished difference Result 79 states and 86 transitions. [2025-01-08 22:16:46,211 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2025-01-08 22:16:46,211 INFO L78 Accepts]: Start accepts. Automaton has has 41 states, 41 states have (on average 3.1463414634146343) internal successors, (129), 41 states have internal predecessors, (129), 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 51 [2025-01-08 22:16:46,211 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-08 22:16:46,212 INFO L225 Difference]: With dead ends: 79 [2025-01-08 22:16:46,212 INFO L226 Difference]: Without dead ends: 70 [2025-01-08 22:16:46,213 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 146 GetRequests, 79 SyntacticMatches, 3 SemanticMatches, 64 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1005 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=580, Invalid=3710, Unknown=0, NotChecked=0, Total=4290 [2025-01-08 22:16:46,213 INFO L435 NwaCegarLoop]: 15 mSDtfsCounter, 211 mSDsluCounter, 205 mSDsCounter, 0 mSdLazyCounter, 806 mSolverCounterSat, 55 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 211 SdHoareTripleChecker+Valid, 220 SdHoareTripleChecker+Invalid, 861 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 55 IncrementalHoareTripleChecker+Valid, 806 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2025-01-08 22:16:46,213 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [211 Valid, 220 Invalid, 861 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [55 Valid, 806 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2025-01-08 22:16:46,214 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 70 states. [2025-01-08 22:16:46,221 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 70 to 57. [2025-01-08 22:16:46,221 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 57 states, 56 states have (on average 1.0714285714285714) internal successors, (60), 56 states have internal predecessors, (60), 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 22:16:46,221 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57 states to 57 states and 60 transitions. [2025-01-08 22:16:46,221 INFO L78 Accepts]: Start accepts. Automaton has 57 states and 60 transitions. Word has length 51 [2025-01-08 22:16:46,222 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-08 22:16:46,222 INFO L471 AbstractCegarLoop]: Abstraction has 57 states and 60 transitions. [2025-01-08 22:16:46,222 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 41 states, 41 states have (on average 3.1463414634146343) internal successors, (129), 41 states have internal predecessors, (129), 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 22:16:46,222 INFO L276 IsEmpty]: Start isEmpty. Operand 57 states and 60 transitions. [2025-01-08 22:16:46,223 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2025-01-08 22:16:46,223 INFO L210 NwaCegarLoop]: Found error trace [2025-01-08 22:16:46,223 INFO L218 NwaCegarLoop]: trace histogram [6, 6, 5, 5, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-08 22:16:46,231 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 22:16:46,423 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 22:16:46,424 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-01-08 22:16:46,424 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-08 22:16:46,424 INFO L85 PathProgramCache]: Analyzing trace with hash -1455758672, now seen corresponding path program 8 times [2025-01-08 22:16:46,424 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-08 22:16:46,424 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1948109983] [2025-01-08 22:16:46,424 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-01-08 22:16:46,424 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-08 22:16:46,435 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 56 statements into 2 equivalence classes. [2025-01-08 22:16:46,456 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 56 of 56 statements. [2025-01-08 22:16:46,458 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-01-08 22:16:46,458 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-08 22:16:47,200 INFO L134 CoverageAnalysis]: Checked inductivity of 94 backedges. 30 proven. 64 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-08 22:16:47,200 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-08 22:16:47,201 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1948109983] [2025-01-08 22:16:47,201 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1948109983] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-08 22:16:47,201 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [270286307] [2025-01-08 22:16:47,201 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-01-08 22:16:47,201 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-08 22:16:47,201 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-08 22:16:47,203 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 22:16:47,205 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 22:16:47,279 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 56 statements into 2 equivalence classes. [2025-01-08 22:16:47,310 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 56 of 56 statements. [2025-01-08 22:16:47,310 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-01-08 22:16:47,310 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-08 22:16:47,312 INFO L256 TraceCheckSpWp]: Trace formula consists of 228 conjuncts, 45 conjuncts are in the unsatisfiable core [2025-01-08 22:16:47,316 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-08 22:16:47,419 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 22:16:47,446 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-01-08 22:16:47,447 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 23 treesize of output 18 [2025-01-08 22:16:47,683 INFO L134 CoverageAnalysis]: Checked inductivity of 94 backedges. 0 proven. 93 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-01-08 22:16:47,683 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-01-08 22:16:47,854 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 22:16:47,856 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 22:16:47,912 INFO L134 CoverageAnalysis]: Checked inductivity of 94 backedges. 0 proven. 82 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2025-01-08 22:16:47,912 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [270286307] provided 0 perfect and 2 imperfect interpolant sequences [2025-01-08 22:16:47,912 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-01-08 22:16:47,912 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 17, 16] total 47 [2025-01-08 22:16:47,912 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1790939754] [2025-01-08 22:16:47,912 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-01-08 22:16:47,912 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 47 states [2025-01-08 22:16:47,913 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-08 22:16:47,913 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 47 interpolants. [2025-01-08 22:16:47,914 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=204, Invalid=1958, Unknown=0, NotChecked=0, Total=2162 [2025-01-08 22:16:47,914 INFO L87 Difference]: Start difference. First operand 57 states and 60 transitions. Second operand has 47 states, 47 states have (on average 3.25531914893617) internal successors, (153), 47 states have internal predecessors, (153), 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 22:16:50,050 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-08 22:16:50,050 INFO L93 Difference]: Finished difference Result 175 states and 194 transitions. [2025-01-08 22:16:50,050 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 61 states. [2025-01-08 22:16:50,050 INFO L78 Accepts]: Start accepts. Automaton has has 47 states, 47 states have (on average 3.25531914893617) internal successors, (153), 47 states have internal predecessors, (153), 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 56 [2025-01-08 22:16:50,050 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-08 22:16:50,052 INFO L225 Difference]: With dead ends: 175 [2025-01-08 22:16:50,052 INFO L226 Difference]: Without dead ends: 92 [2025-01-08 22:16:50,055 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 192 GetRequests, 89 SyntacticMatches, 0 SemanticMatches, 103 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3247 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=1294, Invalid=9626, Unknown=0, NotChecked=0, Total=10920 [2025-01-08 22:16:50,056 INFO L435 NwaCegarLoop]: 15 mSDtfsCounter, 432 mSDsluCounter, 284 mSDsCounter, 0 mSdLazyCounter, 1546 mSolverCounterSat, 86 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 432 SdHoareTripleChecker+Valid, 299 SdHoareTripleChecker+Invalid, 1632 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 86 IncrementalHoareTripleChecker+Valid, 1546 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2025-01-08 22:16:50,057 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [432 Valid, 299 Invalid, 1632 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [86 Valid, 1546 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2025-01-08 22:16:50,057 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 92 states. [2025-01-08 22:16:50,069 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 92 to 68. [2025-01-08 22:16:50,069 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 68 states, 67 states have (on average 1.0746268656716418) internal successors, (72), 67 states have internal predecessors, (72), 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 22:16:50,069 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 68 states to 68 states and 72 transitions. [2025-01-08 22:16:50,070 INFO L78 Accepts]: Start accepts. Automaton has 68 states and 72 transitions. Word has length 56 [2025-01-08 22:16:50,070 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-08 22:16:50,070 INFO L471 AbstractCegarLoop]: Abstraction has 68 states and 72 transitions. [2025-01-08 22:16:50,070 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 47 states, 47 states have (on average 3.25531914893617) internal successors, (153), 47 states have internal predecessors, (153), 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 22:16:50,070 INFO L276 IsEmpty]: Start isEmpty. Operand 68 states and 72 transitions. [2025-01-08 22:16:50,073 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2025-01-08 22:16:50,073 INFO L210 NwaCegarLoop]: Found error trace [2025-01-08 22:16:50,073 INFO L218 NwaCegarLoop]: trace histogram [7, 7, 6, 6, 4, 4, 4, 4, 4, 4, 4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-08 22:16:50,080 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 22:16:50,273 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 22:16:50,273 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-01-08 22:16:50,274 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-08 22:16:50,274 INFO L85 PathProgramCache]: Analyzing trace with hash 949304320, now seen corresponding path program 9 times [2025-01-08 22:16:50,274 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-08 22:16:50,274 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1239135674] [2025-01-08 22:16:50,274 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-01-08 22:16:50,274 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-08 22:16:50,285 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 67 statements into 7 equivalence classes. [2025-01-08 22:16:50,317 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 7 check-sat command(s) and asserted 67 of 67 statements. [2025-01-08 22:16:50,317 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 7 check-sat command(s) [2025-01-08 22:16:50,317 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-08 22:16:51,851 INFO L134 CoverageAnalysis]: Checked inductivity of 143 backedges. 15 proven. 116 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2025-01-08 22:16:51,852 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-08 22:16:51,852 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1239135674] [2025-01-08 22:16:51,853 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1239135674] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-08 22:16:51,853 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [340068168] [2025-01-08 22:16:51,853 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-01-08 22:16:51,853 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-08 22:16:51,853 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-08 22:16:51,855 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 22:16:51,857 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 22:16:51,927 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 67 statements into 7 equivalence classes. [2025-01-08 22:16:52,160 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 7 check-sat command(s) and asserted 67 of 67 statements. [2025-01-08 22:16:52,161 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 7 check-sat command(s) [2025-01-08 22:16:52,161 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-08 22:16:52,164 INFO L256 TraceCheckSpWp]: Trace formula consists of 264 conjuncts, 31 conjuncts are in the unsatisfiable core [2025-01-08 22:16:52,168 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-08 22:16:52,317 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 22:16:52,357 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-01-08 22:16:52,358 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 29 treesize of output 22 [2025-01-08 22:16:52,410 INFO L349 Elim1Store]: treesize reduction 19, result has 32.1 percent of original size [2025-01-08 22:16:52,410 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 26 treesize of output 25 [2025-01-08 22:16:52,458 INFO L349 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2025-01-08 22:16:52,458 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 47 treesize of output 40 [2025-01-08 22:16:53,100 INFO L134 CoverageAnalysis]: Checked inductivity of 143 backedges. 37 proven. 82 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2025-01-08 22:16:53,100 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-01-08 22:16:53,422 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 42 treesize of output 38 [2025-01-08 22:16:53,424 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 46 treesize of output 42 [2025-01-08 22:16:53,599 INFO L134 CoverageAnalysis]: Checked inductivity of 143 backedges. 37 proven. 82 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2025-01-08 22:16:53,599 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [340068168] provided 0 perfect and 2 imperfect interpolant sequences [2025-01-08 22:16:53,599 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-01-08 22:16:53,599 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 17, 16] total 50 [2025-01-08 22:16:53,599 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [693813865] [2025-01-08 22:16:53,599 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-01-08 22:16:53,600 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 50 states [2025-01-08 22:16:53,600 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-08 22:16:53,600 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 50 interpolants. [2025-01-08 22:16:53,601 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=245, Invalid=2205, Unknown=0, NotChecked=0, Total=2450 [2025-01-08 22:16:53,601 INFO L87 Difference]: Start difference. First operand 68 states and 72 transitions. Second operand has 50 states, 50 states have (on average 3.2) internal successors, (160), 50 states have internal predecessors, (160), 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 22:16:57,254 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-08 22:16:57,254 INFO L93 Difference]: Finished difference Result 134 states and 146 transitions. [2025-01-08 22:16:57,255 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 74 states. [2025-01-08 22:16:57,255 INFO L78 Accepts]: Start accepts. Automaton has has 50 states, 50 states have (on average 3.2) internal successors, (160), 50 states have internal predecessors, (160), 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 67 [2025-01-08 22:16:57,255 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-08 22:16:57,256 INFO L225 Difference]: With dead ends: 134 [2025-01-08 22:16:57,256 INFO L226 Difference]: Without dead ends: 125 [2025-01-08 22:16:57,258 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 229 GetRequests, 110 SyntacticMatches, 0 SemanticMatches, 119 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3504 ImplicationChecksByTransitivity, 4.1s TimeCoverageRelationStatistics Valid=1594, Invalid=12926, Unknown=0, NotChecked=0, Total=14520 [2025-01-08 22:16:57,259 INFO L435 NwaCegarLoop]: 19 mSDtfsCounter, 316 mSDsluCounter, 425 mSDsCounter, 0 mSdLazyCounter, 1648 mSolverCounterSat, 82 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 316 SdHoareTripleChecker+Valid, 444 SdHoareTripleChecker+Invalid, 1730 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 82 IncrementalHoareTripleChecker+Valid, 1648 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2025-01-08 22:16:57,259 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [316 Valid, 444 Invalid, 1730 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [82 Valid, 1648 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2025-01-08 22:16:57,259 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 125 states. [2025-01-08 22:16:57,272 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 125 to 103. [2025-01-08 22:16:57,273 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 103 states, 102 states have (on average 1.0490196078431373) internal successors, (107), 102 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-08 22:16:57,273 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 103 states to 103 states and 107 transitions. [2025-01-08 22:16:57,274 INFO L78 Accepts]: Start accepts. Automaton has 103 states and 107 transitions. Word has length 67 [2025-01-08 22:16:57,274 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-08 22:16:57,274 INFO L471 AbstractCegarLoop]: Abstraction has 103 states and 107 transitions. [2025-01-08 22:16:57,274 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 50 states, 50 states have (on average 3.2) internal successors, (160), 50 states have internal predecessors, (160), 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 22:16:57,274 INFO L276 IsEmpty]: Start isEmpty. Operand 103 states and 107 transitions. [2025-01-08 22:16:57,275 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2025-01-08 22:16:57,275 INFO L210 NwaCegarLoop]: Found error trace [2025-01-08 22:16:57,275 INFO L218 NwaCegarLoop]: trace histogram [7, 7, 6, 6, 5, 5, 5, 4, 4, 4, 4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-08 22:16:57,283 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 22:16:57,475 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 22:16:57,476 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-01-08 22:16:57,476 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-08 22:16:57,476 INFO L85 PathProgramCache]: Analyzing trace with hash 834482654, now seen corresponding path program 10 times [2025-01-08 22:16:57,476 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-08 22:16:57,476 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [93284535] [2025-01-08 22:16:57,476 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-01-08 22:16:57,476 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-08 22:16:57,488 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 70 statements into 2 equivalence classes. [2025-01-08 22:16:57,496 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 1 check-sat command(s) and asserted 67 of 70 statements. [2025-01-08 22:16:57,496 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 1 check-sat command(s) [2025-01-08 22:16:57,496 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-08 22:16:57,837 INFO L134 CoverageAnalysis]: Checked inductivity of 156 backedges. 31 proven. 26 refuted. 0 times theorem prover too weak. 99 trivial. 0 not checked. [2025-01-08 22:16:57,838 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-08 22:16:57,838 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [93284535] [2025-01-08 22:16:57,838 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [93284535] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-08 22:16:57,838 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [946255817] [2025-01-08 22:16:57,838 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-01-08 22:16:57,838 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-08 22:16:57,839 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-08 22:16:57,841 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 22:16:57,843 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 22:16:57,916 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 70 statements into 2 equivalence classes. [2025-01-08 22:16:57,946 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 1 check-sat command(s) and asserted 67 of 70 statements. [2025-01-08 22:16:57,946 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 1 check-sat command(s) [2025-01-08 22:16:57,946 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-08 22:16:57,948 INFO L256 TraceCheckSpWp]: Trace formula consists of 221 conjuncts, 20 conjuncts are in the unsatisfiable core [2025-01-08 22:16:57,951 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-08 22:16:58,156 INFO L134 CoverageAnalysis]: Checked inductivity of 156 backedges. 35 proven. 22 refuted. 0 times theorem prover too weak. 99 trivial. 0 not checked. [2025-01-08 22:16:58,157 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-01-08 22:16:58,456 INFO L134 CoverageAnalysis]: Checked inductivity of 156 backedges. 134 proven. 22 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-08 22:16:58,457 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [946255817] provided 0 perfect and 2 imperfect interpolant sequences [2025-01-08 22:16:58,457 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-01-08 22:16:58,457 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 12, 20] total 37 [2025-01-08 22:16:58,457 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [493112445] [2025-01-08 22:16:58,457 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-01-08 22:16:58,457 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 37 states [2025-01-08 22:16:58,457 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-08 22:16:58,458 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2025-01-08 22:16:58,458 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=250, Invalid=1082, Unknown=0, NotChecked=0, Total=1332 [2025-01-08 22:16:58,458 INFO L87 Difference]: Start difference. First operand 103 states and 107 transitions. Second operand has 37 states, 37 states have (on average 3.2432432432432434) internal successors, (120), 37 states have internal predecessors, (120), 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 22:16:58,719 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-08 22:16:58,719 INFO L93 Difference]: Finished difference Result 162 states and 170 transitions. [2025-01-08 22:16:58,720 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2025-01-08 22:16:58,720 INFO L78 Accepts]: Start accepts. Automaton has has 37 states, 37 states have (on average 3.2432432432432434) internal successors, (120), 37 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 70 [2025-01-08 22:16:58,720 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-08 22:16:58,721 INFO L225 Difference]: With dead ends: 162 [2025-01-08 22:16:58,721 INFO L226 Difference]: Without dead ends: 123 [2025-01-08 22:16:58,721 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 159 GetRequests, 113 SyntacticMatches, 5 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 737 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=360, Invalid=1446, Unknown=0, NotChecked=0, Total=1806 [2025-01-08 22:16:58,722 INFO L435 NwaCegarLoop]: 10 mSDtfsCounter, 115 mSDsluCounter, 73 mSDsCounter, 0 mSdLazyCounter, 256 mSolverCounterSat, 49 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 115 SdHoareTripleChecker+Valid, 83 SdHoareTripleChecker+Invalid, 305 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 49 IncrementalHoareTripleChecker+Valid, 256 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-01-08 22:16:58,722 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [115 Valid, 83 Invalid, 305 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [49 Valid, 256 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-01-08 22:16:58,722 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 123 states. [2025-01-08 22:16:58,739 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 123 to 119. [2025-01-08 22:16:58,740 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 119 states, 118 states have (on average 1.0508474576271187) internal successors, (124), 118 states have internal predecessors, (124), 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 22:16:58,740 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 119 states to 119 states and 124 transitions. [2025-01-08 22:16:58,741 INFO L78 Accepts]: Start accepts. Automaton has 119 states and 124 transitions. Word has length 70 [2025-01-08 22:16:58,741 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-08 22:16:58,741 INFO L471 AbstractCegarLoop]: Abstraction has 119 states and 124 transitions. [2025-01-08 22:16:58,741 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 37 states, 37 states have (on average 3.2432432432432434) internal successors, (120), 37 states have internal predecessors, (120), 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 22:16:58,741 INFO L276 IsEmpty]: Start isEmpty. Operand 119 states and 124 transitions. [2025-01-08 22:16:58,742 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2025-01-08 22:16:58,742 INFO L210 NwaCegarLoop]: Found error trace [2025-01-08 22:16:58,742 INFO L218 NwaCegarLoop]: trace histogram [8, 8, 7, 7, 4, 4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-08 22:16:58,750 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 22:16:58,946 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 22:16:58,946 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-01-08 22:16:58,946 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-08 22:16:58,946 INFO L85 PathProgramCache]: Analyzing trace with hash -298245521, now seen corresponding path program 11 times [2025-01-08 22:16:58,946 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-08 22:16:58,946 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1367954673] [2025-01-08 22:16:58,946 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2025-01-08 22:16:58,947 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-08 22:16:58,957 INFO L108 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 partitioned 72 statements into 8 equivalence classes. [2025-01-08 22:16:58,977 INFO L111 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 8 check-sat command(s) and asserted 72 of 72 statements. [2025-01-08 22:16:58,978 INFO L114 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 8 check-sat command(s) [2025-01-08 22:16:58,978 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-08 22:16:59,544 INFO L134 CoverageAnalysis]: Checked inductivity of 177 backedges. 0 proven. 177 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-08 22:16:59,544 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-08 22:16:59,544 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1367954673] [2025-01-08 22:16:59,544 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1367954673] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-08 22:16:59,544 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [839835426] [2025-01-08 22:16:59,544 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2025-01-08 22:16:59,544 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-08 22:16:59,545 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-08 22:16:59,548 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 22:16:59,551 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 22:16:59,625 INFO L108 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 partitioned 72 statements into 8 equivalence classes. [2025-01-08 22:16:59,764 INFO L111 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 8 check-sat command(s) and asserted 72 of 72 statements. [2025-01-08 22:16:59,765 INFO L114 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 8 check-sat command(s) [2025-01-08 22:16:59,765 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-08 22:16:59,767 INFO L256 TraceCheckSpWp]: Trace formula consists of 279 conjuncts, 36 conjuncts are in the unsatisfiable core [2025-01-08 22:16:59,769 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-08 22:16:59,899 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 22:16:59,930 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-01-08 22:16:59,930 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 23 treesize of output 18 [2025-01-08 22:17:00,232 INFO L134 CoverageAnalysis]: Checked inductivity of 177 backedges. 0 proven. 155 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2025-01-08 22:17:00,232 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-01-08 22:17:00,302 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 22:17:00,303 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 22:17:00,313 INFO L134 CoverageAnalysis]: Checked inductivity of 177 backedges. 0 proven. 155 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2025-01-08 22:17:00,313 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [839835426] provided 0 perfect and 2 imperfect interpolant sequences [2025-01-08 22:17:00,313 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-01-08 22:17:00,313 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 18, 17] total 33 [2025-01-08 22:17:00,313 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1044148300] [2025-01-08 22:17:00,313 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-01-08 22:17:00,314 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2025-01-08 22:17:00,314 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-08 22:17:00,314 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2025-01-08 22:17:00,314 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=118, Invalid=938, Unknown=0, NotChecked=0, Total=1056 [2025-01-08 22:17:00,314 INFO L87 Difference]: Start difference. First operand 119 states and 124 transitions. Second operand has 33 states, 33 states have (on average 4.181818181818182) internal successors, (138), 33 states have internal predecessors, (138), 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 22:17:01,339 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-08 22:17:01,340 INFO L93 Difference]: Finished difference Result 166 states and 181 transitions. [2025-01-08 22:17:01,340 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 58 states. [2025-01-08 22:17:01,340 INFO L78 Accepts]: Start accepts. Automaton has has 33 states, 33 states have (on average 4.181818181818182) internal successors, (138), 33 states have internal predecessors, (138), 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 72 [2025-01-08 22:17:01,340 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-08 22:17:01,341 INFO L225 Difference]: With dead ends: 166 [2025-01-08 22:17:01,341 INFO L226 Difference]: Without dead ends: 164 [2025-01-08 22:17:01,342 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 207 GetRequests, 133 SyntacticMatches, 1 SemanticMatches, 73 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1540 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=564, Invalid=4986, Unknown=0, NotChecked=0, Total=5550 [2025-01-08 22:17:01,343 INFO L435 NwaCegarLoop]: 18 mSDtfsCounter, 130 mSDsluCounter, 273 mSDsCounter, 0 mSdLazyCounter, 1552 mSolverCounterSat, 92 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 130 SdHoareTripleChecker+Valid, 291 SdHoareTripleChecker+Invalid, 1644 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 92 IncrementalHoareTripleChecker+Valid, 1552 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2025-01-08 22:17:01,343 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [130 Valid, 291 Invalid, 1644 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [92 Valid, 1552 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2025-01-08 22:17:01,343 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 164 states. [2025-01-08 22:17:01,361 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 164 to 131. [2025-01-08 22:17:01,361 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 131 states, 130 states have (on average 1.0692307692307692) internal successors, (139), 130 states have internal predecessors, (139), 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 22:17:01,362 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 131 states to 131 states and 139 transitions. [2025-01-08 22:17:01,362 INFO L78 Accepts]: Start accepts. Automaton has 131 states and 139 transitions. Word has length 72 [2025-01-08 22:17:01,362 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-08 22:17:01,362 INFO L471 AbstractCegarLoop]: Abstraction has 131 states and 139 transitions. [2025-01-08 22:17:01,363 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 33 states, 33 states have (on average 4.181818181818182) internal successors, (138), 33 states have internal predecessors, (138), 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 22:17:01,363 INFO L276 IsEmpty]: Start isEmpty. Operand 131 states and 139 transitions. [2025-01-08 22:17:01,363 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2025-01-08 22:17:01,363 INFO L210 NwaCegarLoop]: Found error trace [2025-01-08 22:17:01,363 INFO L218 NwaCegarLoop]: trace histogram [7, 7, 6, 6, 5, 5, 5, 5, 5, 5, 4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-08 22:17:01,369 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 22:17:01,563 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 22:17:01,564 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-01-08 22:17:01,564 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-08 22:17:01,564 INFO L85 PathProgramCache]: Analyzing trace with hash 817399907, now seen corresponding path program 12 times [2025-01-08 22:17:01,564 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-08 22:17:01,564 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [480842960] [2025-01-08 22:17:01,564 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2025-01-08 22:17:01,564 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-08 22:17:01,577 INFO L108 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE partitioned 73 statements into 7 equivalence classes. [2025-01-08 22:17:01,604 INFO L111 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 7 check-sat command(s) and asserted 73 of 73 statements. [2025-01-08 22:17:01,604 INFO L114 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 7 check-sat command(s) [2025-01-08 22:17:01,604 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-08 22:17:02,980 INFO L134 CoverageAnalysis]: Checked inductivity of 169 backedges. 12 proven. 135 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2025-01-08 22:17:02,981 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-08 22:17:02,981 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [480842960] [2025-01-08 22:17:02,981 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [480842960] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-08 22:17:02,981 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [634925238] [2025-01-08 22:17:02,981 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2025-01-08 22:17:02,981 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-08 22:17:02,981 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-08 22:17:02,984 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 22:17:02,985 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 22:17:03,063 INFO L108 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE partitioned 73 statements into 7 equivalence classes. [2025-01-08 22:17:03,206 INFO L111 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 7 check-sat command(s) and asserted 73 of 73 statements. [2025-01-08 22:17:03,206 INFO L114 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 7 check-sat command(s) [2025-01-08 22:17:03,206 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-08 22:17:03,209 INFO L256 TraceCheckSpWp]: Trace formula consists of 291 conjuncts, 69 conjuncts are in the unsatisfiable core [2025-01-08 22:17:03,212 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-08 22:17:03,350 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 22:17:03,377 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 22:17:03,406 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 18 [2025-01-08 22:17:03,435 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-01-08 22:17:03,435 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 34 treesize of output 21 [2025-01-08 22:17:03,489 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-01-08 22:17:03,490 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 28 [2025-01-08 22:17:03,525 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-01-08 22:17:03,525 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 41 treesize of output 38 [2025-01-08 22:17:03,565 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-01-08 22:17:03,565 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 37 treesize of output 38 [2025-01-08 22:17:03,606 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-01-08 22:17:03,606 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 48 treesize of output 48 [2025-01-08 22:17:03,662 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-01-08 22:17:03,662 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 44 treesize of output 48 [2025-01-08 22:17:03,724 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-01-08 22:17:03,724 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 55 treesize of output 58 [2025-01-08 22:17:03,786 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-01-08 22:17:03,787 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 51 treesize of output 58 [2025-01-08 22:17:03,840 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-01-08 22:17:03,841 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 62 treesize of output 61 [2025-01-08 22:17:03,914 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-01-08 22:17:03,915 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 6 select indices, 6 select index equivalence classes, 21 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 15 case distinctions, treesize of input 58 treesize of output 68 [2025-01-08 22:17:03,976 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-01-08 22:17:03,976 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 69 treesize of output 71 [2025-01-08 22:17:04,828 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-01-08 22:17:04,828 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 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 61 treesize of output 25 [2025-01-08 22:17:04,861 INFO L134 CoverageAnalysis]: Checked inductivity of 169 backedges. 12 proven. 157 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-08 22:17:04,861 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-01-08 22:17:05,273 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 34 treesize of output 32 [2025-01-08 22:17:05,275 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 54 treesize of output 50 [2025-01-08 22:17:05,482 INFO L134 CoverageAnalysis]: Checked inductivity of 169 backedges. 12 proven. 122 refuted. 0 times theorem prover too weak. 35 trivial. 0 not checked. [2025-01-08 22:17:05,482 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [634925238] provided 0 perfect and 2 imperfect interpolant sequences [2025-01-08 22:17:05,482 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-01-08 22:17:05,482 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 29, 18] total 61 [2025-01-08 22:17:05,482 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [114048091] [2025-01-08 22:17:05,482 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-01-08 22:17:05,482 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 61 states [2025-01-08 22:17:05,482 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-08 22:17:05,483 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 61 interpolants. [2025-01-08 22:17:05,483 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=327, Invalid=3333, Unknown=0, NotChecked=0, Total=3660 [2025-01-08 22:17:05,484 INFO L87 Difference]: Start difference. First operand 131 states and 139 transitions. Second operand has 61 states, 61 states have (on average 3.0655737704918034) internal successors, (187), 61 states have internal predecessors, (187), 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 22:17:08,926 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-08 22:17:08,926 INFO L93 Difference]: Finished difference Result 244 states and 266 transitions. [2025-01-08 22:17:08,926 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 68 states. [2025-01-08 22:17:08,927 INFO L78 Accepts]: Start accepts. Automaton has has 61 states, 61 states have (on average 3.0655737704918034) internal successors, (187), 61 states have internal predecessors, (187), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 73 [2025-01-08 22:17:08,927 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-08 22:17:08,928 INFO L225 Difference]: With dead ends: 244 [2025-01-08 22:17:08,928 INFO L226 Difference]: Without dead ends: 230 [2025-01-08 22:17:08,929 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 236 GetRequests, 109 SyntacticMatches, 6 SemanticMatches, 121 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4436 ImplicationChecksByTransitivity, 3.5s TimeCoverageRelationStatistics Valid=1703, Invalid=13303, Unknown=0, NotChecked=0, Total=15006 [2025-01-08 22:17:08,930 INFO L435 NwaCegarLoop]: 50 mSDtfsCounter, 452 mSDsluCounter, 1194 mSDsCounter, 0 mSdLazyCounter, 3391 mSolverCounterSat, 190 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 452 SdHoareTripleChecker+Valid, 1244 SdHoareTripleChecker+Invalid, 3581 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 190 IncrementalHoareTripleChecker+Valid, 3391 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2025-01-08 22:17:08,930 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [452 Valid, 1244 Invalid, 3581 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [190 Valid, 3391 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2025-01-08 22:17:08,930 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 230 states. [2025-01-08 22:17:08,945 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 230 to 136. [2025-01-08 22:17:08,946 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 136 states, 135 states have (on average 1.0518518518518518) internal successors, (142), 135 states have internal predecessors, (142), 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 22:17:08,946 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 136 states to 136 states and 142 transitions. [2025-01-08 22:17:08,947 INFO L78 Accepts]: Start accepts. Automaton has 136 states and 142 transitions. Word has length 73 [2025-01-08 22:17:08,947 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-08 22:17:08,947 INFO L471 AbstractCegarLoop]: Abstraction has 136 states and 142 transitions. [2025-01-08 22:17:08,947 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 61 states, 61 states have (on average 3.0655737704918034) internal successors, (187), 61 states have internal predecessors, (187), 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 22:17:08,947 INFO L276 IsEmpty]: Start isEmpty. Operand 136 states and 142 transitions. [2025-01-08 22:17:08,948 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2025-01-08 22:17:08,948 INFO L210 NwaCegarLoop]: Found error trace [2025-01-08 22:17:08,948 INFO L218 NwaCegarLoop]: trace histogram [9, 9, 8, 8, 5, 4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-08 22:17:08,957 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2025-01-08 22:17:09,152 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 22:17:09,152 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-01-08 22:17:09,153 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-08 22:17:09,153 INFO L85 PathProgramCache]: Analyzing trace with hash -1161603550, now seen corresponding path program 13 times [2025-01-08 22:17:09,153 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-08 22:17:09,153 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [479075329] [2025-01-08 22:17:09,153 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2025-01-08 22:17:09,153 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-08 22:17:09,165 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 77 statements into 1 equivalence classes. [2025-01-08 22:17:09,172 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 77 of 77 statements. [2025-01-08 22:17:09,172 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-08 22:17:09,173 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-08 22:17:09,586 INFO L134 CoverageAnalysis]: Checked inductivity of 216 backedges. 136 proven. 58 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2025-01-08 22:17:09,586 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-08 22:17:09,586 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [479075329] [2025-01-08 22:17:09,586 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [479075329] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-08 22:17:09,586 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [269783322] [2025-01-08 22:17:09,586 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2025-01-08 22:17:09,586 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-08 22:17:09,587 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-08 22:17:09,589 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 22:17:09,591 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 22:17:09,681 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 77 statements into 1 equivalence classes. [2025-01-08 22:17:09,719 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 77 of 77 statements. [2025-01-08 22:17:09,719 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-08 22:17:09,719 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-08 22:17:09,721 INFO L256 TraceCheckSpWp]: Trace formula consists of 291 conjuncts, 18 conjuncts are in the unsatisfiable core [2025-01-08 22:17:09,722 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-08 22:17:10,275 INFO L134 CoverageAnalysis]: Checked inductivity of 216 backedges. 172 proven. 22 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2025-01-08 22:17:10,276 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-01-08 22:17:10,573 INFO L134 CoverageAnalysis]: Checked inductivity of 216 backedges. 172 proven. 22 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2025-01-08 22:17:10,573 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [269783322] provided 0 perfect and 2 imperfect interpolant sequences [2025-01-08 22:17:10,573 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-01-08 22:17:10,573 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 19, 18] total 52 [2025-01-08 22:17:10,573 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1689396401] [2025-01-08 22:17:10,573 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-01-08 22:17:10,574 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 52 states [2025-01-08 22:17:10,574 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-08 22:17:10,574 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 52 interpolants. [2025-01-08 22:17:10,575 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=614, Invalid=2038, Unknown=0, NotChecked=0, Total=2652 [2025-01-08 22:17:10,575 INFO L87 Difference]: Start difference. First operand 136 states and 142 transitions. Second operand has 52 states, 52 states have (on average 3.6923076923076925) internal successors, (192), 52 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 22:17:10,893 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-08 22:17:10,893 INFO L93 Difference]: Finished difference Result 198 states and 207 transitions. [2025-01-08 22:17:10,893 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2025-01-08 22:17:10,894 INFO L78 Accepts]: Start accepts. Automaton has has 52 states, 52 states have (on average 3.6923076923076925) internal successors, (192), 52 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 77 [2025-01-08 22:17:10,894 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-08 22:17:10,894 INFO L225 Difference]: With dead ends: 198 [2025-01-08 22:17:10,894 INFO L226 Difference]: Without dead ends: 93 [2025-01-08 22:17:10,897 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 180 GetRequests, 122 SyntacticMatches, 0 SemanticMatches, 58 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1354 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=854, Invalid=2686, Unknown=0, NotChecked=0, Total=3540 [2025-01-08 22:17:10,897 INFO L435 NwaCegarLoop]: 28 mSDtfsCounter, 253 mSDsluCounter, 189 mSDsCounter, 0 mSdLazyCounter, 436 mSolverCounterSat, 86 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 253 SdHoareTripleChecker+Valid, 217 SdHoareTripleChecker+Invalid, 522 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 86 IncrementalHoareTripleChecker+Valid, 436 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2025-01-08 22:17:10,897 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [253 Valid, 217 Invalid, 522 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [86 Valid, 436 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2025-01-08 22:17:10,897 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 93 states. [2025-01-08 22:17:10,911 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 93 to 89. [2025-01-08 22:17:10,911 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 89 states, 88 states have (on average 1.0568181818181819) internal successors, (93), 88 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-08 22:17:10,911 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 89 states to 89 states and 93 transitions. [2025-01-08 22:17:10,912 INFO L78 Accepts]: Start accepts. Automaton has 89 states and 93 transitions. Word has length 77 [2025-01-08 22:17:10,912 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-08 22:17:10,912 INFO L471 AbstractCegarLoop]: Abstraction has 89 states and 93 transitions. [2025-01-08 22:17:10,912 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 52 states, 52 states have (on average 3.6923076923076925) internal successors, (192), 52 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 22:17:10,912 INFO L276 IsEmpty]: Start isEmpty. Operand 89 states and 93 transitions. [2025-01-08 22:17:10,913 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2025-01-08 22:17:10,913 INFO L210 NwaCegarLoop]: Found error trace [2025-01-08 22:17:10,913 INFO L218 NwaCegarLoop]: trace histogram [10, 10, 9, 9, 6, 5, 5, 5, 5, 5, 5, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-08 22:17:10,920 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2025-01-08 22:17:11,113 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 22:17:11,113 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-01-08 22:17:11,114 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-08 22:17:11,114 INFO L85 PathProgramCache]: Analyzing trace with hash 1540709838, now seen corresponding path program 14 times [2025-01-08 22:17:11,114 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-08 22:17:11,114 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1466642530] [2025-01-08 22:17:11,114 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-01-08 22:17:11,114 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-08 22:17:11,129 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 88 statements into 2 equivalence classes. [2025-01-08 22:17:11,147 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 88 of 88 statements. [2025-01-08 22:17:11,147 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-01-08 22:17:11,147 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-08 22:17:11,673 INFO L134 CoverageAnalysis]: Checked inductivity of 286 backedges. 0 proven. 251 refuted. 0 times theorem prover too weak. 35 trivial. 0 not checked. [2025-01-08 22:17:11,673 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-08 22:17:11,673 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1466642530] [2025-01-08 22:17:11,673 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1466642530] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-08 22:17:11,673 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1057791869] [2025-01-08 22:17:11,673 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-01-08 22:17:11,673 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-08 22:17:11,673 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-08 22:17:11,675 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 22:17:11,676 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 22:17:11,760 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 88 statements into 2 equivalence classes. [2025-01-08 22:17:11,792 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 88 of 88 statements. [2025-01-08 22:17:11,793 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-01-08 22:17:11,793 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-08 22:17:11,794 INFO L256 TraceCheckSpWp]: Trace formula consists of 327 conjuncts, 61 conjuncts are in the unsatisfiable core [2025-01-08 22:17:11,796 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-08 22:17:11,936 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 22:17:11,959 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-01-08 22:17:11,959 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 23 treesize of output 18 [2025-01-08 22:17:12,381 INFO L134 CoverageAnalysis]: Checked inductivity of 286 backedges. 0 proven. 285 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-01-08 22:17:12,381 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-01-08 22:17:12,517 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 22:17:12,518 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 22:17:12,529 INFO L134 CoverageAnalysis]: Checked inductivity of 286 backedges. 0 proven. 251 refuted. 0 times theorem prover too weak. 35 trivial. 0 not checked. [2025-01-08 22:17:12,529 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1057791869] provided 0 perfect and 2 imperfect interpolant sequences [2025-01-08 22:17:12,530 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-01-08 22:17:12,530 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 23, 22] total 44 [2025-01-08 22:17:12,530 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1012092761] [2025-01-08 22:17:12,530 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-01-08 22:17:12,530 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 44 states [2025-01-08 22:17:12,530 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-08 22:17:12,531 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 44 interpolants. [2025-01-08 22:17:12,531 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=180, Invalid=1712, Unknown=0, NotChecked=0, Total=1892 [2025-01-08 22:17:12,531 INFO L87 Difference]: Start difference. First operand 89 states and 93 transitions. Second operand has 44 states, 44 states have (on average 3.840909090909091) internal successors, (169), 44 states have internal predecessors, (169), 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 22:17:14,109 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-08 22:17:14,109 INFO L93 Difference]: Finished difference Result 183 states and 201 transitions. [2025-01-08 22:17:14,109 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 76 states. [2025-01-08 22:17:14,110 INFO L78 Accepts]: Start accepts. Automaton has has 44 states, 44 states have (on average 3.840909090909091) internal successors, (169), 44 states have internal predecessors, (169), 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 88 [2025-01-08 22:17:14,110 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-08 22:17:14,111 INFO L225 Difference]: With dead ends: 183 [2025-01-08 22:17:14,111 INFO L226 Difference]: Without dead ends: 181 [2025-01-08 22:17:14,112 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 250 GetRequests, 153 SyntacticMatches, 0 SemanticMatches, 97 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2782 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=787, Invalid=8915, Unknown=0, NotChecked=0, Total=9702 [2025-01-08 22:17:14,112 INFO L435 NwaCegarLoop]: 22 mSDtfsCounter, 145 mSDsluCounter, 406 mSDsCounter, 0 mSdLazyCounter, 2348 mSolverCounterSat, 124 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 145 SdHoareTripleChecker+Valid, 428 SdHoareTripleChecker+Invalid, 2472 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 124 IncrementalHoareTripleChecker+Valid, 2348 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2025-01-08 22:17:14,112 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [145 Valid, 428 Invalid, 2472 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [124 Valid, 2348 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2025-01-08 22:17:14,113 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 181 states. [2025-01-08 22:17:14,127 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 181 to 94. [2025-01-08 22:17:14,127 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 94 states, 93 states have (on average 1.064516129032258) internal successors, (99), 93 states have internal predecessors, (99), 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 22:17:14,128 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 94 states to 94 states and 99 transitions. [2025-01-08 22:17:14,128 INFO L78 Accepts]: Start accepts. Automaton has 94 states and 99 transitions. Word has length 88 [2025-01-08 22:17:14,128 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-08 22:17:14,128 INFO L471 AbstractCegarLoop]: Abstraction has 94 states and 99 transitions. [2025-01-08 22:17:14,129 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 44 states, 44 states have (on average 3.840909090909091) internal successors, (169), 44 states have internal predecessors, (169), 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 22:17:14,129 INFO L276 IsEmpty]: Start isEmpty. Operand 94 states and 99 transitions. [2025-01-08 22:17:14,129 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2025-01-08 22:17:14,129 INFO L210 NwaCegarLoop]: Found error trace [2025-01-08 22:17:14,129 INFO L218 NwaCegarLoop]: trace histogram [11, 11, 10, 10, 7, 5, 5, 5, 5, 5, 5, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-08 22:17:14,138 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Ended with exit code 0 [2025-01-08 22:17:14,330 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 22:17:14,330 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-01-08 22:17:14,330 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-08 22:17:14,330 INFO L85 PathProgramCache]: Analyzing trace with hash -1095737821, now seen corresponding path program 15 times [2025-01-08 22:17:14,331 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-08 22:17:14,331 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [838892854] [2025-01-08 22:17:14,331 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-01-08 22:17:14,331 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-08 22:17:14,343 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 93 statements into 11 equivalence classes. [2025-01-08 22:17:14,374 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 11 check-sat command(s) and asserted 93 of 93 statements. [2025-01-08 22:17:14,374 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 11 check-sat command(s) [2025-01-08 22:17:14,374 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-08 22:17:14,874 INFO L134 CoverageAnalysis]: Checked inductivity of 335 backedges. 219 proven. 81 refuted. 0 times theorem prover too weak. 35 trivial. 0 not checked. [2025-01-08 22:17:14,874 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-08 22:17:14,874 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [838892854] [2025-01-08 22:17:14,874 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [838892854] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-08 22:17:14,874 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1995331629] [2025-01-08 22:17:14,875 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-01-08 22:17:14,875 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-08 22:17:14,875 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-08 22:17:14,877 INFO L229 MonitoredProcess]: Starting monitored process 17 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-01-08 22:17:14,879 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2025-01-08 22:17:14,985 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 93 statements into 11 equivalence classes. [2025-01-08 22:17:15,358 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 11 check-sat command(s) and asserted 93 of 93 statements. [2025-01-08 22:17:15,358 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 11 check-sat command(s) [2025-01-08 22:17:15,358 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-08 22:17:15,361 INFO L256 TraceCheckSpWp]: Trace formula consists of 339 conjuncts, 38 conjuncts are in the unsatisfiable core [2025-01-08 22:17:15,362 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-08 22:17:15,470 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2025-01-08 22:17:15,492 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-01-08 22:17:15,493 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 29 treesize of output 22 [2025-01-08 22:17:15,851 INFO L134 CoverageAnalysis]: Checked inductivity of 335 backedges. 65 proven. 233 refuted. 0 times theorem prover too weak. 37 trivial. 0 not checked. [2025-01-08 22:17:15,851 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-01-08 22:17:16,124 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 22:17:16,125 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 20 treesize of output 16 [2025-01-08 22:17:16,289 INFO L134 CoverageAnalysis]: Checked inductivity of 335 backedges. 65 proven. 233 refuted. 0 times theorem prover too weak. 37 trivial. 0 not checked. [2025-01-08 22:17:16,289 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1995331629] provided 0 perfect and 2 imperfect interpolant sequences [2025-01-08 22:17:16,289 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-01-08 22:17:16,289 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 20, 20] total 57 [2025-01-08 22:17:16,289 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1852349013] [2025-01-08 22:17:16,290 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-01-08 22:17:16,290 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 57 states [2025-01-08 22:17:16,290 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-08 22:17:16,291 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 57 interpolants. [2025-01-08 22:17:16,291 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=279, Invalid=2913, Unknown=0, NotChecked=0, Total=3192 [2025-01-08 22:17:16,291 INFO L87 Difference]: Start difference. First operand 94 states and 99 transitions. Second operand has 57 states, 57 states have (on average 3.9473684210526314) internal successors, (225), 57 states have internal predecessors, (225), 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 22:17:19,072 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-08 22:17:19,072 INFO L93 Difference]: Finished difference Result 306 states and 332 transitions. [2025-01-08 22:17:19,073 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 78 states. [2025-01-08 22:17:19,073 INFO L78 Accepts]: Start accepts. Automaton has has 57 states, 57 states have (on average 3.9473684210526314) internal successors, (225), 57 states have internal predecessors, (225), 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 93 [2025-01-08 22:17:19,073 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-08 22:17:19,074 INFO L225 Difference]: With dead ends: 306 [2025-01-08 22:17:19,074 INFO L226 Difference]: Without dead ends: 180 [2025-01-08 22:17:19,075 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 281 GetRequests, 151 SyntacticMatches, 0 SemanticMatches, 130 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5070 ImplicationChecksByTransitivity, 2.7s TimeCoverageRelationStatistics Valid=1778, Invalid=15514, Unknown=0, NotChecked=0, Total=17292 [2025-01-08 22:17:19,076 INFO L435 NwaCegarLoop]: 33 mSDtfsCounter, 781 mSDsluCounter, 725 mSDsCounter, 0 mSdLazyCounter, 1970 mSolverCounterSat, 240 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 781 SdHoareTripleChecker+Valid, 758 SdHoareTripleChecker+Invalid, 2210 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 240 IncrementalHoareTripleChecker+Valid, 1970 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2025-01-08 22:17:19,076 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [781 Valid, 758 Invalid, 2210 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [240 Valid, 1970 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2025-01-08 22:17:19,076 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 180 states. [2025-01-08 22:17:19,100 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 180 to 140. [2025-01-08 22:17:19,100 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 140 states, 139 states have (on average 1.0431654676258992) internal successors, (145), 139 states have internal predecessors, (145), 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 22:17:19,101 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 140 states to 140 states and 145 transitions. [2025-01-08 22:17:19,101 INFO L78 Accepts]: Start accepts. Automaton has 140 states and 145 transitions. Word has length 93 [2025-01-08 22:17:19,101 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-08 22:17:19,101 INFO L471 AbstractCegarLoop]: Abstraction has 140 states and 145 transitions. [2025-01-08 22:17:19,102 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 57 states, 57 states have (on average 3.9473684210526314) internal successors, (225), 57 states have internal predecessors, (225), 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 22:17:19,102 INFO L276 IsEmpty]: Start isEmpty. Operand 140 states and 145 transitions. [2025-01-08 22:17:19,102 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2025-01-08 22:17:19,102 INFO L210 NwaCegarLoop]: Found error trace [2025-01-08 22:17:19,102 INFO L218 NwaCegarLoop]: trace histogram [11, 11, 10, 10, 6, 6, 6, 6, 6, 6, 6, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-08 22:17:19,111 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Ended with exit code 0 [2025-01-08 22:17:19,303 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,17 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-08 22:17:19,303 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-01-08 22:17:19,303 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-08 22:17:19,304 INFO L85 PathProgramCache]: Analyzing trace with hash 977050726, now seen corresponding path program 16 times [2025-01-08 22:17:19,304 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-08 22:17:19,304 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [335328272] [2025-01-08 22:17:19,304 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-01-08 22:17:19,304 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-08 22:17:19,316 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 99 statements into 2 equivalence classes. [2025-01-08 22:17:19,328 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 1 check-sat command(s) and asserted 96 of 99 statements. [2025-01-08 22:17:19,329 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 1 check-sat command(s) [2025-01-08 22:17:19,329 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-08 22:17:20,412 INFO L134 CoverageAnalysis]: Checked inductivity of 367 backedges. 20 proven. 296 refuted. 0 times theorem prover too weak. 51 trivial. 0 not checked. [2025-01-08 22:17:20,412 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-08 22:17:20,412 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [335328272] [2025-01-08 22:17:20,412 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [335328272] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-08 22:17:20,413 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1210061957] [2025-01-08 22:17:20,413 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-01-08 22:17:20,414 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-08 22:17:20,414 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-08 22:17:20,416 INFO L229 MonitoredProcess]: Starting monitored process 18 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-01-08 22:17:20,418 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2025-01-08 22:17:20,528 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 99 statements into 2 equivalence classes. [2025-01-08 22:17:20,571 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 1 check-sat command(s) and asserted 96 of 99 statements. [2025-01-08 22:17:20,571 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 1 check-sat command(s) [2025-01-08 22:17:20,571 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-08 22:17:20,573 INFO L256 TraceCheckSpWp]: Trace formula consists of 311 conjuncts, 78 conjuncts are in the unsatisfiable core [2025-01-08 22:17:20,576 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-08 22:17:20,627 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 19 treesize of output 1 [2025-01-08 22:17:20,630 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 13 [2025-01-08 22:17:20,667 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 22 [2025-01-08 22:17:20,709 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-01-08 22:17:20,709 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 34 treesize of output 32 [2025-01-08 22:17:20,743 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-01-08 22:17:20,743 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 32 treesize of output 34 [2025-01-08 22:17:20,780 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-01-08 22:17:20,780 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 47 treesize of output 46 [2025-01-08 22:17:20,817 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-01-08 22:17:20,818 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 41 treesize of output 46 [2025-01-08 22:17:20,858 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-01-08 22:17:20,858 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 56 treesize of output 58 [2025-01-08 22:17:20,903 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-01-08 22:17:20,903 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 50 treesize of output 58 [2025-01-08 22:17:20,947 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-01-08 22:17:20,947 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 15 case distinctions, treesize of input 65 treesize of output 70 [2025-01-08 22:17:21,001 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-01-08 22:17:21,001 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 59 treesize of output 70 [2025-01-08 22:17:21,057 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-01-08 22:17:21,057 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 7 select indices, 7 select index equivalence classes, 0 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 21 case distinctions, treesize of input 74 treesize of output 82 [2025-01-08 22:17:21,121 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-01-08 22:17:21,121 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 15 case distinctions, treesize of input 68 treesize of output 82 [2025-01-08 22:17:21,178 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-01-08 22:17:21,178 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 7 select indices, 7 select index equivalence classes, 0 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 21 case distinctions, treesize of input 83 treesize of output 85 [2025-01-08 22:17:22,272 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-01-08 22:17:22,272 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 7 select indices, 7 select index equivalence classes, 0 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 21 case distinctions, treesize of input 73 treesize of output 25 [2025-01-08 22:17:22,279 INFO L134 CoverageAnalysis]: Checked inductivity of 367 backedges. 20 proven. 347 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-08 22:17:22,280 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-01-08 22:17:22,642 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 17 [2025-01-08 22:17:22,644 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 22:17:22,676 INFO L134 CoverageAnalysis]: Checked inductivity of 367 backedges. 20 proven. 296 refuted. 0 times theorem prover too weak. 51 trivial. 0 not checked. [2025-01-08 22:17:22,676 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1210061957] provided 0 perfect and 2 imperfect interpolant sequences [2025-01-08 22:17:22,676 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-01-08 22:17:22,676 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 35, 22] total 47 [2025-01-08 22:17:22,676 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1244619618] [2025-01-08 22:17:22,676 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-01-08 22:17:22,676 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 47 states [2025-01-08 22:17:22,676 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-08 22:17:22,677 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 47 interpolants. [2025-01-08 22:17:22,677 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=174, Invalid=1988, Unknown=0, NotChecked=0, Total=2162 [2025-01-08 22:17:22,677 INFO L87 Difference]: Start difference. First operand 140 states and 145 transitions. Second operand has 47 states, 47 states have (on average 3.4680851063829787) internal successors, (163), 47 states have internal predecessors, (163), 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 22:17:24,222 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-08 22:17:24,222 INFO L93 Difference]: Finished difference Result 182 states and 196 transitions. [2025-01-08 22:17:24,222 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 54 states. [2025-01-08 22:17:24,222 INFO L78 Accepts]: Start accepts. Automaton has has 47 states, 47 states have (on average 3.4680851063829787) internal successors, (163), 47 states have internal predecessors, (163), 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 99 [2025-01-08 22:17:24,223 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-08 22:17:24,223 INFO L225 Difference]: With dead ends: 182 [2025-01-08 22:17:24,223 INFO L226 Difference]: Without dead ends: 173 [2025-01-08 22:17:24,224 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 256 GetRequests, 162 SyntacticMatches, 25 SemanticMatches, 69 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1934 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=349, Invalid=4621, Unknown=0, NotChecked=0, Total=4970 [2025-01-08 22:17:24,224 INFO L435 NwaCegarLoop]: 25 mSDtfsCounter, 43 mSDsluCounter, 581 mSDsCounter, 0 mSdLazyCounter, 2747 mSolverCounterSat, 61 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 43 SdHoareTripleChecker+Valid, 606 SdHoareTripleChecker+Invalid, 2808 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 61 IncrementalHoareTripleChecker+Valid, 2747 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2025-01-08 22:17:24,224 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [43 Valid, 606 Invalid, 2808 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [61 Valid, 2747 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2025-01-08 22:17:24,225 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 173 states. [2025-01-08 22:17:24,245 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 173 to 145. [2025-01-08 22:17:24,246 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 145 states, 144 states have (on average 1.0416666666666667) internal successors, (150), 144 states have internal predecessors, (150), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-08 22:17:24,246 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 145 states to 145 states and 150 transitions. [2025-01-08 22:17:24,246 INFO L78 Accepts]: Start accepts. Automaton has 145 states and 150 transitions. Word has length 99 [2025-01-08 22:17:24,246 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-08 22:17:24,246 INFO L471 AbstractCegarLoop]: Abstraction has 145 states and 150 transitions. [2025-01-08 22:17:24,247 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 47 states, 47 states have (on average 3.4680851063829787) internal successors, (163), 47 states have internal predecessors, (163), 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 22:17:24,247 INFO L276 IsEmpty]: Start isEmpty. Operand 145 states and 150 transitions. [2025-01-08 22:17:24,247 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2025-01-08 22:17:24,247 INFO L210 NwaCegarLoop]: Found error trace [2025-01-08 22:17:24,247 INFO L218 NwaCegarLoop]: trace histogram [12, 12, 11, 11, 6, 6, 6, 6, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-08 22:17:24,257 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Ended with exit code 0 [2025-01-08 22:17:24,448 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,18 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-08 22:17:24,448 INFO L396 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-01-08 22:17:24,448 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-08 22:17:24,448 INFO L85 PathProgramCache]: Analyzing trace with hash -1736409461, now seen corresponding path program 17 times [2025-01-08 22:17:24,448 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-08 22:17:24,448 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1244904236] [2025-01-08 22:17:24,449 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2025-01-08 22:17:24,449 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-08 22:17:24,461 INFO L108 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 partitioned 104 statements into 12 equivalence classes. [2025-01-08 22:17:24,500 INFO L111 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 12 check-sat command(s) and asserted 104 of 104 statements. [2025-01-08 22:17:24,500 INFO L114 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 12 check-sat command(s) [2025-01-08 22:17:24,500 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-08 22:17:25,396 INFO L134 CoverageAnalysis]: Checked inductivity of 421 backedges. 0 proven. 421 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-08 22:17:25,396 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-08 22:17:25,396 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1244904236] [2025-01-08 22:17:25,397 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1244904236] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-08 22:17:25,397 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1076147494] [2025-01-08 22:17:25,397 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2025-01-08 22:17:25,397 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-08 22:17:25,397 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-08 22:17:25,398 INFO L229 MonitoredProcess]: Starting monitored process 19 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-01-08 22:17:25,399 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2025-01-08 22:17:25,504 INFO L108 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 partitioned 104 statements into 12 equivalence classes. [2025-01-08 22:17:26,053 INFO L111 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 12 check-sat command(s) and asserted 104 of 104 statements. [2025-01-08 22:17:26,054 INFO L114 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 12 check-sat command(s) [2025-01-08 22:17:26,054 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-08 22:17:26,057 INFO L256 TraceCheckSpWp]: Trace formula consists of 381 conjuncts, 48 conjuncts are in the unsatisfiable core [2025-01-08 22:17:26,060 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-08 22:17:26,285 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 22:17:26,312 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-01-08 22:17:26,313 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 23 treesize of output 18 [2025-01-08 22:17:26,806 INFO L134 CoverageAnalysis]: Checked inductivity of 421 backedges. 0 proven. 370 refuted. 0 times theorem prover too weak. 51 trivial. 0 not checked. [2025-01-08 22:17:26,806 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-01-08 22:17:26,895 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 22:17:26,897 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 22:17:26,911 INFO L134 CoverageAnalysis]: Checked inductivity of 421 backedges. 0 proven. 370 refuted. 0 times theorem prover too weak. 51 trivial. 0 not checked. [2025-01-08 22:17:26,912 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1076147494] provided 0 perfect and 2 imperfect interpolant sequences [2025-01-08 22:17:26,912 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-01-08 22:17:26,912 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [26, 24, 23] total 47 [2025-01-08 22:17:26,912 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [129565775] [2025-01-08 22:17:26,912 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-01-08 22:17:26,912 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 47 states [2025-01-08 22:17:26,912 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-08 22:17:26,913 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 47 interpolants. [2025-01-08 22:17:26,913 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=174, Invalid=1988, Unknown=0, NotChecked=0, Total=2162 [2025-01-08 22:17:26,913 INFO L87 Difference]: Start difference. First operand 145 states and 150 transitions. Second operand has 47 states, 47 states have (on average 4.23404255319149) internal successors, (199), 47 states have internal predecessors, (199), 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 22:17:29,412 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-08 22:17:29,412 INFO L93 Difference]: Finished difference Result 260 states and 281 transitions. [2025-01-08 22:17:29,413 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 110 states. [2025-01-08 22:17:29,413 INFO L78 Accepts]: Start accepts. Automaton has has 47 states, 47 states have (on average 4.23404255319149) internal successors, (199), 47 states have internal predecessors, (199), 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 104 [2025-01-08 22:17:29,413 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-08 22:17:29,414 INFO L225 Difference]: With dead ends: 260 [2025-01-08 22:17:29,414 INFO L226 Difference]: Without dead ends: 258 [2025-01-08 22:17:29,415 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 329 GetRequests, 195 SyntacticMatches, 1 SemanticMatches, 133 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5759 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=1256, Invalid=16834, Unknown=0, NotChecked=0, Total=18090 [2025-01-08 22:17:29,417 INFO L435 NwaCegarLoop]: 23 mSDtfsCounter, 206 mSDsluCounter, 421 mSDsCounter, 0 mSdLazyCounter, 2698 mSolverCounterSat, 203 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 206 SdHoareTripleChecker+Valid, 444 SdHoareTripleChecker+Invalid, 2901 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 203 IncrementalHoareTripleChecker+Valid, 2698 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2025-01-08 22:17:29,417 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [206 Valid, 444 Invalid, 2901 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [203 Valid, 2698 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2025-01-08 22:17:29,417 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 258 states. [2025-01-08 22:17:29,439 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 258 to 150. [2025-01-08 22:17:29,439 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 150 states, 149 states have (on average 1.0469798657718121) internal successors, (156), 149 states have internal predecessors, (156), 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 22:17:29,440 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 150 states to 150 states and 156 transitions. [2025-01-08 22:17:29,440 INFO L78 Accepts]: Start accepts. Automaton has 150 states and 156 transitions. Word has length 104 [2025-01-08 22:17:29,440 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-08 22:17:29,440 INFO L471 AbstractCegarLoop]: Abstraction has 150 states and 156 transitions. [2025-01-08 22:17:29,440 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 47 states, 47 states have (on average 4.23404255319149) internal successors, (199), 47 states have internal predecessors, (199), 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 22:17:29,440 INFO L276 IsEmpty]: Start isEmpty. Operand 150 states and 156 transitions. [2025-01-08 22:17:29,441 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2025-01-08 22:17:29,441 INFO L210 NwaCegarLoop]: Found error trace [2025-01-08 22:17:29,441 INFO L218 NwaCegarLoop]: trace histogram [13, 13, 12, 12, 7, 6, 6, 6, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-08 22:17:29,450 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Ended with exit code 0 [2025-01-08 22:17:29,641 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21,19 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-08 22:17:29,641 INFO L396 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-01-08 22:17:29,642 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-08 22:17:29,642 INFO L85 PathProgramCache]: Analyzing trace with hash -1837290618, now seen corresponding path program 18 times [2025-01-08 22:17:29,642 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-08 22:17:29,642 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1006905095] [2025-01-08 22:17:29,642 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2025-01-08 22:17:29,642 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-08 22:17:29,656 INFO L108 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE partitioned 109 statements into 13 equivalence classes. [2025-01-08 22:17:29,688 INFO L111 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 13 check-sat command(s) and asserted 109 of 109 statements. [2025-01-08 22:17:29,688 INFO L114 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 13 check-sat command(s) [2025-01-08 22:17:29,689 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-08 22:17:30,380 INFO L134 CoverageAnalysis]: Checked inductivity of 480 backedges. 322 proven. 107 refuted. 0 times theorem prover too weak. 51 trivial. 0 not checked. [2025-01-08 22:17:30,381 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-08 22:17:30,381 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1006905095] [2025-01-08 22:17:30,381 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1006905095] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-08 22:17:30,381 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1248405233] [2025-01-08 22:17:30,381 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2025-01-08 22:17:30,381 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-08 22:17:30,381 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-08 22:17:30,383 INFO L229 MonitoredProcess]: Starting monitored process 20 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-01-08 22:17:30,385 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2025-01-08 22:17:30,520 INFO L108 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE partitioned 109 statements into 13 equivalence classes. [2025-01-08 22:17:30,929 INFO L111 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 13 check-sat command(s) and asserted 109 of 109 statements. [2025-01-08 22:17:30,929 INFO L114 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 13 check-sat command(s) [2025-01-08 22:17:30,929 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-08 22:17:30,931 INFO L256 TraceCheckSpWp]: Trace formula consists of 393 conjuncts, 55 conjuncts are in the unsatisfiable core [2025-01-08 22:17:30,933 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-08 22:17:31,309 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 11 [2025-01-08 22:17:31,346 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-01-08 22:17:31,347 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 35 treesize of output 26 [2025-01-08 22:17:31,952 INFO L134 CoverageAnalysis]: Checked inductivity of 480 backedges. 79 proven. 399 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2025-01-08 22:17:31,952 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-01-08 22:17:32,431 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 22:17:32,433 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 20 treesize of output 16 [2025-01-08 22:17:33,407 INFO L134 CoverageAnalysis]: Checked inductivity of 480 backedges. 114 proven. 364 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2025-01-08 22:17:33,407 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1248405233] provided 0 perfect and 2 imperfect interpolant sequences [2025-01-08 22:17:33,407 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-01-08 22:17:33,407 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 31, 31] total 82 [2025-01-08 22:17:33,407 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1875118094] [2025-01-08 22:17:33,407 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-01-08 22:17:33,408 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 82 states [2025-01-08 22:17:33,408 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-08 22:17:33,409 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 82 interpolants. [2025-01-08 22:17:33,409 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=568, Invalid=6074, Unknown=0, NotChecked=0, Total=6642 [2025-01-08 22:17:33,409 INFO L87 Difference]: Start difference. First operand 150 states and 156 transitions. Second operand has 82 states, 82 states have (on average 3.5853658536585367) internal successors, (294), 82 states have internal predecessors, (294), 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 22:17:40,241 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-08 22:17:40,241 INFO L93 Difference]: Finished difference Result 508 states and 543 transitions. [2025-01-08 22:17:40,241 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 133 states. [2025-01-08 22:17:40,241 INFO L78 Accepts]: Start accepts. Automaton has has 82 states, 82 states have (on average 3.5853658536585367) internal successors, (294), 82 states have internal predecessors, (294), 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 109 [2025-01-08 22:17:40,242 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-08 22:17:40,243 INFO L225 Difference]: With dead ends: 508 [2025-01-08 22:17:40,243 INFO L226 Difference]: Without dead ends: 359 [2025-01-08 22:17:40,245 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 371 GetRequests, 161 SyntacticMatches, 0 SemanticMatches, 210 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14189 ImplicationChecksByTransitivity, 6.9s TimeCoverageRelationStatistics Valid=4928, Invalid=39804, Unknown=0, NotChecked=0, Total=44732 [2025-01-08 22:17:40,246 INFO L435 NwaCegarLoop]: 38 mSDtfsCounter, 1527 mSDsluCounter, 1301 mSDsCounter, 0 mSdLazyCounter, 3437 mSolverCounterSat, 474 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1527 SdHoareTripleChecker+Valid, 1339 SdHoareTripleChecker+Invalid, 3911 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 474 IncrementalHoareTripleChecker+Valid, 3437 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2025-01-08 22:17:40,246 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1527 Valid, 1339 Invalid, 3911 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [474 Valid, 3437 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2025-01-08 22:17:40,247 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 359 states. [2025-01-08 22:17:40,280 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 359 to 191. [2025-01-08 22:17:40,281 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 191 states, 190 states have (on average 1.068421052631579) internal successors, (203), 190 states have internal predecessors, (203), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-08 22:17:40,281 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 191 states to 191 states and 203 transitions. [2025-01-08 22:17:40,281 INFO L78 Accepts]: Start accepts. Automaton has 191 states and 203 transitions. Word has length 109 [2025-01-08 22:17:40,282 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-08 22:17:40,282 INFO L471 AbstractCegarLoop]: Abstraction has 191 states and 203 transitions. [2025-01-08 22:17:40,282 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 82 states, 82 states have (on average 3.5853658536585367) internal successors, (294), 82 states have internal predecessors, (294), 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 22:17:40,282 INFO L276 IsEmpty]: Start isEmpty. Operand 191 states and 203 transitions. [2025-01-08 22:17:40,282 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2025-01-08 22:17:40,283 INFO L210 NwaCegarLoop]: Found error trace [2025-01-08 22:17:40,283 INFO L218 NwaCegarLoop]: trace histogram [13, 13, 12, 12, 7, 7, 7, 7, 7, 7, 7, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-08 22:17:40,291 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Forceful destruction successful, exit code 0 [2025-01-08 22:17:40,483 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22,20 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-08 22:17:40,483 INFO L396 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-01-08 22:17:40,484 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-08 22:17:40,484 INFO L85 PathProgramCache]: Analyzing trace with hash -41698713, now seen corresponding path program 19 times [2025-01-08 22:17:40,484 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-08 22:17:40,484 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1356076452] [2025-01-08 22:17:40,484 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2025-01-08 22:17:40,484 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-08 22:17:40,498 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 115 statements into 1 equivalence classes. [2025-01-08 22:17:40,514 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 115 of 115 statements. [2025-01-08 22:17:40,514 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-08 22:17:40,514 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-08 22:17:42,087 INFO L134 CoverageAnalysis]: Checked inductivity of 518 backedges. 204 proven. 254 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2025-01-08 22:17:42,087 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-08 22:17:42,087 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1356076452] [2025-01-08 22:17:42,087 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1356076452] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-08 22:17:42,087 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [717429729] [2025-01-08 22:17:42,087 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2025-01-08 22:17:42,087 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-08 22:17:42,087 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-08 22:17:42,089 INFO L229 MonitoredProcess]: Starting monitored process 21 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-01-08 22:17:42,090 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2025-01-08 22:17:42,212 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 115 statements into 1 equivalence classes. [2025-01-08 22:17:42,254 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 115 of 115 statements. [2025-01-08 22:17:42,255 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-08 22:17:42,255 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-08 22:17:42,257 INFO L256 TraceCheckSpWp]: Trace formula consists of 417 conjuncts, 60 conjuncts are in the unsatisfiable core [2025-01-08 22:17:42,259 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-08 22:17:42,420 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 22:17:42,446 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-01-08 22:17:42,446 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 23 treesize of output 18 [2025-01-08 22:17:42,474 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 22:17:42,505 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-01-08 22:17:42,505 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 28 [2025-01-08 22:17:42,539 INFO L190 IndexEqualityManager]: detected not equals via solver [2025-01-08 22:17:42,540 INFO L190 IndexEqualityManager]: detected not equals via solver [2025-01-08 22:17:42,542 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-01-08 22:17:42,542 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 22:17:42,580 INFO L190 IndexEqualityManager]: detected not equals via solver [2025-01-08 22:17:42,581 INFO L190 IndexEqualityManager]: detected not equals via solver [2025-01-08 22:17:42,582 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-01-08 22:17:42,582 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 49 treesize of output 46 [2025-01-08 22:17:42,639 INFO L190 IndexEqualityManager]: detected not equals via solver [2025-01-08 22:17:42,640 INFO L190 IndexEqualityManager]: detected not equals via solver [2025-01-08 22:17:42,640 INFO L190 IndexEqualityManager]: detected not equals via solver [2025-01-08 22:17:42,641 INFO L190 IndexEqualityManager]: detected not equals via solver [2025-01-08 22:17:42,642 INFO L190 IndexEqualityManager]: detected not equals via solver [2025-01-08 22:17:42,643 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-01-08 22:17:42,643 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 41 treesize of output 46 [2025-01-08 22:17:42,715 INFO L190 IndexEqualityManager]: detected not equals via solver [2025-01-08 22:17:42,716 INFO L190 IndexEqualityManager]: detected not equals via solver [2025-01-08 22:17:42,717 INFO L190 IndexEqualityManager]: detected not equals via solver [2025-01-08 22:17:42,717 INFO L190 IndexEqualityManager]: detected not equals via solver [2025-01-08 22:17:42,719 INFO L190 IndexEqualityManager]: detected not equals via solver [2025-01-08 22:17:42,720 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-01-08 22:17:42,720 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 60 treesize of output 60