./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/array-crafted/zero_sum5.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-crafted/zero_sum5.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 1caf94d5755d978efe1a3e5e557e469a697b8b845c60d509025c0b6bf4eae4ae --- Real Ultimate output --- This is Ultimate 0.3.0-?-551b009-m [2025-01-08 22:25:49,121 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-01-08 22:25:49,192 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2025-01-08 22:25:49,196 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-01-08 22:25:49,197 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-01-08 22:25:49,225 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-01-08 22:25:49,226 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-01-08 22:25:49,226 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-01-08 22:25:49,227 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-01-08 22:25:49,227 INFO L153 SettingsManager]: * Use memory slicer=true [2025-01-08 22:25:49,228 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-01-08 22:25:49,228 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-01-08 22:25:49,228 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-01-08 22:25:49,228 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-01-08 22:25:49,229 INFO L153 SettingsManager]: * Use SBE=true [2025-01-08 22:25:49,229 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-01-08 22:25:49,229 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2025-01-08 22:25:49,229 INFO L153 SettingsManager]: * sizeof long=4 [2025-01-08 22:25:49,229 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-01-08 22:25:49,230 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-01-08 22:25:49,230 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-01-08 22:25:49,230 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2025-01-08 22:25:49,230 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-01-08 22:25:49,230 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2025-01-08 22:25:49,230 INFO L153 SettingsManager]: * sizeof long double=12 [2025-01-08 22:25:49,230 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2025-01-08 22:25:49,230 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-01-08 22:25:49,230 INFO L153 SettingsManager]: * Use constant arrays=true [2025-01-08 22:25:49,230 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-01-08 22:25:49,230 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-01-08 22:25:49,230 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-01-08 22:25:49,230 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-01-08 22:25:49,231 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-01-08 22:25:49,231 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2025-01-08 22:25:49,231 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-01-08 22:25:49,231 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-01-08 22:25:49,231 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-01-08 22:25:49,231 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-01-08 22:25:49,231 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-01-08 22:25:49,231 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-01-08 22:25:49,231 INFO L153 SettingsManager]: * Compute procedure contracts=false [2025-01-08 22:25:49,231 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2025-01-08 22:25:49,231 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-01-08 22:25:49,231 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2025-01-08 22:25:49,231 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2025-01-08 22:25:49,231 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-01-08 22:25:49,231 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-01-08 22:25:49,232 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-01-08 22:25:49,232 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 -> 1caf94d5755d978efe1a3e5e557e469a697b8b845c60d509025c0b6bf4eae4ae [2025-01-08 22:25:49,513 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-01-08 22:25:49,523 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-01-08 22:25:49,526 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-01-08 22:25:49,527 INFO L270 PluginConnector]: Initializing CDTParser... [2025-01-08 22:25:49,527 INFO L274 PluginConnector]: CDTParser initialized [2025-01-08 22:25:49,528 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/array-crafted/zero_sum5.c [2025-01-08 22:25:50,748 INFO L533 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/459b9b038/ca7cf4f28e854d75ad29a44ee0882e06/FLAGbeff42e50 [2025-01-08 22:25:51,015 INFO L384 CDTParser]: Found 1 translation units. [2025-01-08 22:25:51,016 INFO L180 CDTParser]: Scanning /storage/repos/ultimate-jdk21/releaseScripts/default/sv-benchmarks/c/array-crafted/zero_sum5.c [2025-01-08 22:25:51,039 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/459b9b038/ca7cf4f28e854d75ad29a44ee0882e06/FLAGbeff42e50 [2025-01-08 22:25:51,328 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/459b9b038/ca7cf4f28e854d75ad29a44ee0882e06 [2025-01-08 22:25:51,330 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-01-08 22:25:51,331 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2025-01-08 22:25:51,332 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-01-08 22:25:51,332 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-01-08 22:25:51,335 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-01-08 22:25:51,336 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.01 10:25:51" (1/1) ... [2025-01-08 22:25:51,337 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@340f9b2f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.01 10:25:51, skipping insertion in model container [2025-01-08 22:25:51,337 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.01 10:25:51" (1/1) ... [2025-01-08 22:25:51,350 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-01-08 22:25:51,466 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-crafted/zero_sum5.c[400,413] [2025-01-08 22:25:51,496 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-01-08 22:25:51,504 INFO L200 MainTranslator]: Completed pre-run [2025-01-08 22:25:51,513 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-crafted/zero_sum5.c[400,413] [2025-01-08 22:25:51,528 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-01-08 22:25:51,543 INFO L204 MainTranslator]: Completed translation [2025-01-08 22:25:51,544 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.01 10:25:51 WrapperNode [2025-01-08 22:25:51,545 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-01-08 22:25:51,547 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-01-08 22:25:51,547 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-01-08 22:25:51,547 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-01-08 22:25:51,552 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.01 10:25:51" (1/1) ... [2025-01-08 22:25:51,558 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.01 10:25:51" (1/1) ... [2025-01-08 22:25:51,574 INFO L138 Inliner]: procedures = 15, calls = 21, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 119 [2025-01-08 22:25:51,574 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-01-08 22:25:51,574 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-01-08 22:25:51,574 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-01-08 22:25:51,575 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-01-08 22:25:51,581 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.01 10:25:51" (1/1) ... [2025-01-08 22:25:51,581 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.01 10:25:51" (1/1) ... [2025-01-08 22:25:51,583 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.01 10:25:51" (1/1) ... [2025-01-08 22:25:51,593 INFO L175 MemorySlicer]: Split 13 memory accesses to 2 slices as follows [2, 11]. 85 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0]. The 1 writes are split as follows [0, 1]. [2025-01-08 22:25:51,594 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.01 10:25:51" (1/1) ... [2025-01-08 22:25:51,594 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.01 10:25:51" (1/1) ... [2025-01-08 22:25:51,599 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.01 10:25:51" (1/1) ... [2025-01-08 22:25:51,600 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.01 10:25:51" (1/1) ... [2025-01-08 22:25:51,605 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.01 10:25:51" (1/1) ... [2025-01-08 22:25:51,606 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.01 10:25:51" (1/1) ... [2025-01-08 22:25:51,607 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.01 10:25:51" (1/1) ... [2025-01-08 22:25:51,608 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-01-08 22:25:51,609 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2025-01-08 22:25:51,609 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2025-01-08 22:25:51,609 INFO L274 PluginConnector]: RCFGBuilder initialized [2025-01-08 22:25:51,610 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.01 10:25:51" (1/1) ... [2025-01-08 22:25:51,614 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-01-08 22:25:51,624 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-08 22:25:51,635 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 22:25:51,637 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 22:25:51,654 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2025-01-08 22:25:51,654 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2025-01-08 22:25:51,654 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2025-01-08 22:25:51,654 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2025-01-08 22:25:51,654 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2025-01-08 22:25:51,654 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2025-01-08 22:25:51,655 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-01-08 22:25:51,655 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-01-08 22:25:51,655 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2025-01-08 22:25:51,655 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2025-01-08 22:25:51,655 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2025-01-08 22:25:51,709 INFO L234 CfgBuilder]: Building ICFG [2025-01-08 22:25:51,711 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2025-01-08 22:25:51,878 INFO L? ?]: Removed 7 outVars from TransFormulas that were not future-live. [2025-01-08 22:25:51,879 INFO L283 CfgBuilder]: Performing block encoding [2025-01-08 22:25:51,885 INFO L307 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-01-08 22:25:51,885 INFO L312 CfgBuilder]: Removed 0 assume(true) statements. [2025-01-08 22:25:51,886 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 08.01 10:25:51 BoogieIcfgContainer [2025-01-08 22:25:51,886 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2025-01-08 22:25:51,887 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2025-01-08 22:25:51,887 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2025-01-08 22:25:51,890 INFO L274 PluginConnector]: TraceAbstraction initialized [2025-01-08 22:25:51,891 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 08.01 10:25:51" (1/3) ... [2025-01-08 22:25:51,891 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@641ca6e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.01 10:25:51, skipping insertion in model container [2025-01-08 22:25:51,891 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.01 10:25:51" (2/3) ... [2025-01-08 22:25:51,891 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@641ca6e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.01 10:25:51, skipping insertion in model container [2025-01-08 22:25:51,891 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 08.01 10:25:51" (3/3) ... [2025-01-08 22:25:51,892 INFO L128 eAbstractionObserver]: Analyzing ICFG zero_sum5.c [2025-01-08 22:25:51,905 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2025-01-08 22:25:51,906 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG zero_sum5.c that has 1 procedures, 22 locations, 1 initial locations, 11 loop locations, and 1 error locations. [2025-01-08 22:25:51,958 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-01-08 22:25:51,972 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;@6091c444, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-01-08 22:25:51,972 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2025-01-08 22:25:51,975 INFO L276 IsEmpty]: Start isEmpty. Operand has 22 states, 20 states have (on average 1.7) internal successors, (34), 21 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 22:25:51,980 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2025-01-08 22:25:51,980 INFO L210 NwaCegarLoop]: Found error trace [2025-01-08 22:25:51,981 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-08 22:25:51,981 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-01-08 22:25:51,985 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-08 22:25:51,986 INFO L85 PathProgramCache]: Analyzing trace with hash 964683433, now seen corresponding path program 1 times [2025-01-08 22:25:51,992 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-08 22:25:51,994 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1270757061] [2025-01-08 22:25:51,996 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-08 22:25:51,996 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-08 22:25:52,052 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 16 statements into 1 equivalence classes. [2025-01-08 22:25:52,074 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 16 of 16 statements. [2025-01-08 22:25:52,074 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-08 22:25:52,074 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-08 22:25:52,207 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 22:25:52,207 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-08 22:25:52,207 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1270757061] [2025-01-08 22:25:52,208 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1270757061] provided 1 perfect and 0 imperfect interpolant sequences [2025-01-08 22:25:52,208 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-01-08 22:25:52,208 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-01-08 22:25:52,209 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1554537007] [2025-01-08 22:25:52,210 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-01-08 22:25:52,213 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-01-08 22:25:52,213 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-08 22:25:52,229 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-01-08 22:25:52,230 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-01-08 22:25:52,232 INFO L87 Difference]: Start difference. First operand has 22 states, 20 states have (on average 1.7) internal successors, (34), 21 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) Second operand has 3 states, 3 states have (on average 5.333333333333333) internal successors, (16), 3 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-08 22:25:52,311 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-08 22:25:52,312 INFO L93 Difference]: Finished difference Result 41 states and 64 transitions. [2025-01-08 22:25:52,314 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-01-08 22:25:52,315 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 5.333333333333333) internal successors, (16), 3 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 16 [2025-01-08 22:25:52,315 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-08 22:25:52,322 INFO L225 Difference]: With dead ends: 41 [2025-01-08 22:25:52,322 INFO L226 Difference]: Without dead ends: 18 [2025-01-08 22:25:52,324 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-01-08 22:25:52,328 INFO L435 NwaCegarLoop]: 32 mSDtfsCounter, 0 mSDsluCounter, 6 mSDsCounter, 0 mSdLazyCounter, 27 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 38 SdHoareTripleChecker+Invalid, 27 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 27 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-01-08 22:25:52,330 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 38 Invalid, 27 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 27 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-01-08 22:25:52,343 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18 states. [2025-01-08 22:25:52,352 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18 to 18. [2025-01-08 22:25:52,354 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18 states, 17 states have (on average 1.6470588235294117) internal successors, (28), 17 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 22:25:52,357 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 28 transitions. [2025-01-08 22:25:52,359 INFO L78 Accepts]: Start accepts. Automaton has 18 states and 28 transitions. Word has length 16 [2025-01-08 22:25:52,359 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-08 22:25:52,359 INFO L471 AbstractCegarLoop]: Abstraction has 18 states and 28 transitions. [2025-01-08 22:25:52,359 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 5.333333333333333) internal successors, (16), 3 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-08 22:25:52,359 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 28 transitions. [2025-01-08 22:25:52,360 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2025-01-08 22:25:52,360 INFO L210 NwaCegarLoop]: Found error trace [2025-01-08 22:25:52,360 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-08 22:25:52,360 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2025-01-08 22:25:52,360 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-01-08 22:25:52,361 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-08 22:25:52,361 INFO L85 PathProgramCache]: Analyzing trace with hash 93653956, now seen corresponding path program 1 times [2025-01-08 22:25:52,361 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-08 22:25:52,361 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [948829480] [2025-01-08 22:25:52,361 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-08 22:25:52,361 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-08 22:25:52,372 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 17 statements into 1 equivalence classes. [2025-01-08 22:25:52,385 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 17 of 17 statements. [2025-01-08 22:25:52,387 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-08 22:25:52,387 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-08 22:25:52,502 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-01-08 22:25:52,502 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-08 22:25:52,502 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [948829480] [2025-01-08 22:25:52,503 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [948829480] provided 1 perfect and 0 imperfect interpolant sequences [2025-01-08 22:25:52,503 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-01-08 22:25:52,503 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-01-08 22:25:52,503 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [937053318] [2025-01-08 22:25:52,503 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-01-08 22:25:52,505 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-01-08 22:25:52,505 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-08 22:25:52,506 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-01-08 22:25:52,506 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2025-01-08 22:25:52,506 INFO L87 Difference]: Start difference. First operand 18 states and 28 transitions. Second operand has 4 states, 4 states have (on average 4.25) internal successors, (17), 4 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-08 22:25:52,590 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-08 22:25:52,591 INFO L93 Difference]: Finished difference Result 40 states and 68 transitions. [2025-01-08 22:25:52,591 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-01-08 22:25:52,591 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 4.25) internal successors, (17), 4 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 17 [2025-01-08 22:25:52,591 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-08 22:25:52,592 INFO L225 Difference]: With dead ends: 40 [2025-01-08 22:25:52,592 INFO L226 Difference]: Without dead ends: 28 [2025-01-08 22:25:52,593 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2025-01-08 22:25:52,594 INFO L435 NwaCegarLoop]: 5 mSDtfsCounter, 23 mSDsluCounter, 2 mSDsCounter, 0 mSdLazyCounter, 39 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 23 SdHoareTripleChecker+Valid, 7 SdHoareTripleChecker+Invalid, 57 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 39 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-01-08 22:25:52,594 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [23 Valid, 7 Invalid, 57 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 39 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-01-08 22:25:52,595 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states. [2025-01-08 22:25:52,603 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 28. [2025-01-08 22:25:52,604 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 28 states, 27 states have (on average 1.4074074074074074) internal successors, (38), 27 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-08 22:25:52,604 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 38 transitions. [2025-01-08 22:25:52,604 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 38 transitions. Word has length 17 [2025-01-08 22:25:52,604 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-08 22:25:52,605 INFO L471 AbstractCegarLoop]: Abstraction has 28 states and 38 transitions. [2025-01-08 22:25:52,605 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 4.25) internal successors, (17), 4 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-08 22:25:52,605 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 38 transitions. [2025-01-08 22:25:52,605 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2025-01-08 22:25:52,605 INFO L210 NwaCegarLoop]: Found error trace [2025-01-08 22:25:52,605 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-08 22:25:52,605 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2025-01-08 22:25:52,605 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-01-08 22:25:52,606 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-08 22:25:52,606 INFO L85 PathProgramCache]: Analyzing trace with hash 1842875546, now seen corresponding path program 1 times [2025-01-08 22:25:52,606 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-08 22:25:52,606 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1528474541] [2025-01-08 22:25:52,606 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-08 22:25:52,606 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-08 22:25:52,627 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 27 statements into 1 equivalence classes. [2025-01-08 22:25:52,660 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 27 of 27 statements. [2025-01-08 22:25:52,660 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-08 22:25:52,661 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-08 22:25:52,760 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2025-01-08 22:25:52,760 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-08 22:25:52,760 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1528474541] [2025-01-08 22:25:52,760 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1528474541] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-08 22:25:52,760 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1075996348] [2025-01-08 22:25:52,760 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-08 22:25:52,761 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-08 22:25:52,761 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-08 22:25:52,763 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 22:25:52,766 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 22:25:52,808 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 27 statements into 1 equivalence classes. [2025-01-08 22:25:52,832 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 27 of 27 statements. [2025-01-08 22:25:52,833 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-08 22:25:52,833 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-08 22:25:52,835 INFO L256 TraceCheckSpWp]: Trace formula consists of 139 conjuncts, 4 conjuncts are in the unsatisfiable core [2025-01-08 22:25:52,838 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-08 22:25:52,884 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2025-01-08 22:25:52,885 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-01-08 22:25:52,910 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2025-01-08 22:25:52,912 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1075996348] provided 0 perfect and 2 imperfect interpolant sequences [2025-01-08 22:25:52,912 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-01-08 22:25:52,912 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 7 [2025-01-08 22:25:52,913 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2104289350] [2025-01-08 22:25:52,913 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-01-08 22:25:52,913 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2025-01-08 22:25:52,913 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-08 22:25:52,914 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2025-01-08 22:25:52,914 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=22, Unknown=0, NotChecked=0, Total=42 [2025-01-08 22:25:52,914 INFO L87 Difference]: Start difference. First operand 28 states and 38 transitions. Second operand has 7 states, 7 states have (on average 4.571428571428571) internal successors, (32), 7 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 22:25:52,992 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-08 22:25:52,993 INFO L93 Difference]: Finished difference Result 52 states and 72 transitions. [2025-01-08 22:25:52,993 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-01-08 22:25:52,993 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 4.571428571428571) internal successors, (32), 7 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 27 [2025-01-08 22:25:52,993 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-08 22:25:52,994 INFO L225 Difference]: With dead ends: 52 [2025-01-08 22:25:52,994 INFO L226 Difference]: Without dead ends: 29 [2025-01-08 22:25:52,995 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 50 SyntacticMatches, 1 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=20, Invalid=22, Unknown=0, NotChecked=0, Total=42 [2025-01-08 22:25:52,996 INFO L435 NwaCegarLoop]: 26 mSDtfsCounter, 0 mSDsluCounter, 4 mSDsCounter, 0 mSdLazyCounter, 50 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 30 SdHoareTripleChecker+Invalid, 50 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 50 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-01-08 22:25:52,997 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 30 Invalid, 50 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 50 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-01-08 22:25:52,997 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2025-01-08 22:25:53,002 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 29. [2025-01-08 22:25:53,003 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 29 states, 28 states have (on average 1.3928571428571428) internal successors, (39), 28 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-08 22:25:53,005 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 39 transitions. [2025-01-08 22:25:53,005 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 39 transitions. Word has length 27 [2025-01-08 22:25:53,006 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-08 22:25:53,007 INFO L471 AbstractCegarLoop]: Abstraction has 29 states and 39 transitions. [2025-01-08 22:25:53,007 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 4.571428571428571) internal successors, (32), 7 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 22:25:53,007 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 39 transitions. [2025-01-08 22:25:53,007 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2025-01-08 22:25:53,007 INFO L210 NwaCegarLoop]: Found error trace [2025-01-08 22:25:53,008 INFO L218 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-08 22:25:53,016 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 22:25:53,208 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-08 22:25:53,208 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-01-08 22:25:53,209 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-08 22:25:53,209 INFO L85 PathProgramCache]: Analyzing trace with hash 793131167, now seen corresponding path program 2 times [2025-01-08 22:25:53,209 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-08 22:25:53,209 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1907839039] [2025-01-08 22:25:53,209 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-01-08 22:25:53,209 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-08 22:25:53,223 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 28 statements into 2 equivalence classes. [2025-01-08 22:25:53,250 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 28 of 28 statements. [2025-01-08 22:25:53,251 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-01-08 22:25:53,253 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-08 22:25:53,357 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2025-01-08 22:25:53,357 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-08 22:25:53,357 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1907839039] [2025-01-08 22:25:53,358 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1907839039] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-08 22:25:53,358 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2110830403] [2025-01-08 22:25:53,358 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-01-08 22:25:53,358 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-08 22:25:53,358 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-08 22:25:53,361 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 22:25:53,363 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 22:25:53,404 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 28 statements into 2 equivalence classes. [2025-01-08 22:25:53,432 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 28 of 28 statements. [2025-01-08 22:25:53,433 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-01-08 22:25:53,433 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-08 22:25:53,434 INFO L256 TraceCheckSpWp]: Trace formula consists of 148 conjuncts, 4 conjuncts are in the unsatisfiable core [2025-01-08 22:25:53,435 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-08 22:25:53,497 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2025-01-08 22:25:53,497 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-01-08 22:25:53,540 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2025-01-08 22:25:53,541 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2110830403] provided 0 perfect and 2 imperfect interpolant sequences [2025-01-08 22:25:53,541 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-01-08 22:25:53,541 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 8 [2025-01-08 22:25:53,542 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1125141333] [2025-01-08 22:25:53,542 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-01-08 22:25:53,542 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2025-01-08 22:25:53,542 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-08 22:25:53,543 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2025-01-08 22:25:53,543 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=31, Unknown=0, NotChecked=0, Total=56 [2025-01-08 22:25:53,544 INFO L87 Difference]: Start difference. First operand 29 states and 39 transitions. Second operand has 8 states, 8 states have (on average 4.0) internal successors, (32), 8 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 22:25:53,651 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-08 22:25:53,652 INFO L93 Difference]: Finished difference Result 60 states and 88 transitions. [2025-01-08 22:25:53,652 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-01-08 22:25:53,652 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 4.0) internal successors, (32), 8 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 28 [2025-01-08 22:25:53,653 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-08 22:25:53,653 INFO L225 Difference]: With dead ends: 60 [2025-01-08 22:25:53,654 INFO L226 Difference]: Without dead ends: 39 [2025-01-08 22:25:53,655 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 50 SyntacticMatches, 3 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=25, Invalid=31, Unknown=0, NotChecked=0, Total=56 [2025-01-08 22:25:53,655 INFO L435 NwaCegarLoop]: 5 mSDtfsCounter, 21 mSDsluCounter, 6 mSDsCounter, 0 mSdLazyCounter, 67 mSolverCounterSat, 45 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 21 SdHoareTripleChecker+Valid, 11 SdHoareTripleChecker+Invalid, 112 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 45 IncrementalHoareTripleChecker+Valid, 67 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-01-08 22:25:53,655 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [21 Valid, 11 Invalid, 112 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [45 Valid, 67 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-01-08 22:25:53,656 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39 states. [2025-01-08 22:25:53,662 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 39. [2025-01-08 22:25:53,663 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 39 states, 38 states have (on average 1.2894736842105263) internal successors, (49), 38 states have internal predecessors, (49), 0 states have call successors, (0), 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 22:25:53,664 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 49 transitions. [2025-01-08 22:25:53,664 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 49 transitions. Word has length 28 [2025-01-08 22:25:53,664 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-08 22:25:53,664 INFO L471 AbstractCegarLoop]: Abstraction has 39 states and 49 transitions. [2025-01-08 22:25:53,665 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 4.0) internal successors, (32), 8 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 22:25:53,666 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 49 transitions. [2025-01-08 22:25:53,666 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2025-01-08 22:25:53,666 INFO L210 NwaCegarLoop]: Found error trace [2025-01-08 22:25:53,666 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-08 22:25:53,675 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2025-01-08 22:25:53,867 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,3 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-08 22:25:53,867 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-01-08 22:25:53,868 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-08 22:25:53,868 INFO L85 PathProgramCache]: Analyzing trace with hash -2080467703, now seen corresponding path program 3 times [2025-01-08 22:25:53,868 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-08 22:25:53,868 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1026448618] [2025-01-08 22:25:53,868 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-01-08 22:25:53,868 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-08 22:25:53,882 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 38 statements into 2 equivalence classes. [2025-01-08 22:25:53,925 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) and asserted 38 of 38 statements. [2025-01-08 22:25:53,925 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2025-01-08 22:25:53,925 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-08 22:25:56,387 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 0 proven. 33 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-08 22:25:56,388 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-08 22:25:56,388 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1026448618] [2025-01-08 22:25:56,388 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1026448618] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-08 22:25:56,389 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [28821399] [2025-01-08 22:25:56,389 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-01-08 22:25:56,389 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-08 22:25:56,389 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-08 22:25:56,393 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 22:25:56,396 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 22:25:56,437 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 38 statements into 2 equivalence classes. [2025-01-08 22:25:56,467 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) and asserted 38 of 38 statements. [2025-01-08 22:25:56,467 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2025-01-08 22:25:56,468 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-08 22:25:56,470 INFO L256 TraceCheckSpWp]: Trace formula consists of 198 conjuncts, 87 conjuncts are in the unsatisfiable core [2025-01-08 22:25:56,474 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-08 22:25:56,769 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2025-01-08 22:25:56,771 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-01-08 22:25:57,010 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-01-08 22:25:57,011 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 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 35 treesize of output 43 [2025-01-08 22:25:57,095 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2025-01-08 22:25:57,095 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [28821399] provided 0 perfect and 2 imperfect interpolant sequences [2025-01-08 22:25:57,095 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-01-08 22:25:57,095 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 10, 10] total 21 [2025-01-08 22:25:57,096 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1318911459] [2025-01-08 22:25:57,096 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-01-08 22:25:57,096 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2025-01-08 22:25:57,096 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-08 22:25:57,097 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2025-01-08 22:25:57,097 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=61, Invalid=359, Unknown=0, NotChecked=0, Total=420 [2025-01-08 22:25:57,097 INFO L87 Difference]: Start difference. First operand 39 states and 49 transitions. Second operand has 21 states, 21 states have (on average 4.476190476190476) internal successors, (94), 21 states have internal predecessors, (94), 0 states have call successors, (0), 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 22:25:57,415 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-08 22:25:57,415 INFO L93 Difference]: Finished difference Result 70 states and 89 transitions. [2025-01-08 22:25:57,416 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2025-01-08 22:25:57,416 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 4.476190476190476) internal successors, (94), 21 states have internal predecessors, (94), 0 states have call successors, (0), 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 38 [2025-01-08 22:25:57,417 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-08 22:25:57,417 INFO L225 Difference]: With dead ends: 70 [2025-01-08 22:25:57,417 INFO L226 Difference]: Without dead ends: 67 [2025-01-08 22:25:57,418 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 110 GetRequests, 90 SyntacticMatches, 1 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 96 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=61, Invalid=359, Unknown=0, NotChecked=0, Total=420 [2025-01-08 22:25:57,418 INFO L435 NwaCegarLoop]: 15 mSDtfsCounter, 0 mSDsluCounter, 100 mSDsCounter, 0 mSdLazyCounter, 496 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 115 SdHoareTripleChecker+Invalid, 497 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 496 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2025-01-08 22:25:57,418 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 115 Invalid, 497 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 496 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2025-01-08 22:25:57,419 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 67 states. [2025-01-08 22:25:57,431 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 67 to 65. [2025-01-08 22:25:57,433 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 65 states, 64 states have (on average 1.3125) internal successors, (84), 64 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-08 22:25:57,435 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65 states to 65 states and 84 transitions. [2025-01-08 22:25:57,436 INFO L78 Accepts]: Start accepts. Automaton has 65 states and 84 transitions. Word has length 38 [2025-01-08 22:25:57,437 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-08 22:25:57,437 INFO L471 AbstractCegarLoop]: Abstraction has 65 states and 84 transitions. [2025-01-08 22:25:57,437 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 4.476190476190476) internal successors, (94), 21 states have internal predecessors, (94), 0 states have call successors, (0), 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 22:25:57,437 INFO L276 IsEmpty]: Start isEmpty. Operand 65 states and 84 transitions. [2025-01-08 22:25:57,438 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2025-01-08 22:25:57,438 INFO L210 NwaCegarLoop]: Found error trace [2025-01-08 22:25:57,438 INFO L218 NwaCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-08 22:25:57,447 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 22:25:57,643 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-08 22:25:57,643 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-01-08 22:25:57,643 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-08 22:25:57,644 INFO L85 PathProgramCache]: Analyzing trace with hash 2128075556, now seen corresponding path program 4 times [2025-01-08 22:25:57,644 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-08 22:25:57,644 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2086386058] [2025-01-08 22:25:57,644 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-01-08 22:25:57,644 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-08 22:25:57,654 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 39 statements into 2 equivalence classes. [2025-01-08 22:25:57,661 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 1 check-sat command(s) and asserted 34 of 39 statements. [2025-01-08 22:25:57,661 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 1 check-sat command(s) [2025-01-08 22:25:57,662 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-08 22:25:57,737 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 6 proven. 3 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2025-01-08 22:25:57,737 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-08 22:25:57,737 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2086386058] [2025-01-08 22:25:57,737 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2086386058] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-08 22:25:57,737 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [876806395] [2025-01-08 22:25:57,737 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-01-08 22:25:57,737 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-08 22:25:57,738 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-08 22:25:57,740 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 22:25:57,742 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 22:25:57,781 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 39 statements into 2 equivalence classes. [2025-01-08 22:25:57,799 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 1 check-sat command(s) and asserted 34 of 39 statements. [2025-01-08 22:25:57,800 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 1 check-sat command(s) [2025-01-08 22:25:57,800 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-08 22:25:57,801 INFO L256 TraceCheckSpWp]: Trace formula consists of 145 conjuncts, 8 conjuncts are in the unsatisfiable core [2025-01-08 22:25:57,802 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-08 22:25:57,847 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 6 proven. 3 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2025-01-08 22:25:57,848 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-01-08 22:25:57,881 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 6 proven. 3 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2025-01-08 22:25:57,881 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [876806395] provided 0 perfect and 2 imperfect interpolant sequences [2025-01-08 22:25:57,881 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-01-08 22:25:57,881 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 11 [2025-01-08 22:25:57,881 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [408213174] [2025-01-08 22:25:57,881 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-01-08 22:25:57,882 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2025-01-08 22:25:57,882 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-08 22:25:57,882 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2025-01-08 22:25:57,882 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=76, Unknown=0, NotChecked=0, Total=110 [2025-01-08 22:25:57,883 INFO L87 Difference]: Start difference. First operand 65 states and 84 transitions. Second operand has 11 states, 11 states have (on average 3.090909090909091) internal successors, (34), 11 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 22:25:58,090 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-08 22:25:58,090 INFO L93 Difference]: Finished difference Result 128 states and 172 transitions. [2025-01-08 22:25:58,090 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2025-01-08 22:25:58,091 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 3.090909090909091) internal successors, (34), 11 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) Word has length 39 [2025-01-08 22:25:58,091 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-08 22:25:58,091 INFO L225 Difference]: With dead ends: 128 [2025-01-08 22:25:58,091 INFO L226 Difference]: Without dead ends: 73 [2025-01-08 22:25:58,092 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 87 GetRequests, 70 SyntacticMatches, 5 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 35 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=58, Invalid=124, Unknown=0, NotChecked=0, Total=182 [2025-01-08 22:25:58,092 INFO L435 NwaCegarLoop]: 7 mSDtfsCounter, 0 mSDsluCounter, 12 mSDsCounter, 0 mSdLazyCounter, 133 mSolverCounterSat, 160 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 19 SdHoareTripleChecker+Invalid, 293 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 160 IncrementalHoareTripleChecker+Valid, 133 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2025-01-08 22:25:58,093 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 19 Invalid, 293 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [160 Valid, 133 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2025-01-08 22:25:58,094 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 73 states. [2025-01-08 22:25:58,102 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 73 to 72. [2025-01-08 22:25:58,103 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 72 states, 71 states have (on average 1.267605633802817) internal successors, (90), 71 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-08 22:25:58,103 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 72 states to 72 states and 90 transitions. [2025-01-08 22:25:58,103 INFO L78 Accepts]: Start accepts. Automaton has 72 states and 90 transitions. Word has length 39 [2025-01-08 22:25:58,103 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-08 22:25:58,103 INFO L471 AbstractCegarLoop]: Abstraction has 72 states and 90 transitions. [2025-01-08 22:25:58,104 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 3.090909090909091) internal successors, (34), 11 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 22:25:58,104 INFO L276 IsEmpty]: Start isEmpty. Operand 72 states and 90 transitions. [2025-01-08 22:25:58,104 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2025-01-08 22:25:58,105 INFO L210 NwaCegarLoop]: Found error trace [2025-01-08 22:25:58,105 INFO L218 NwaCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-08 22:25:58,112 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 22:25:58,305 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,SelfDestructingSolverStorable5 [2025-01-08 22:25:58,305 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-01-08 22:25:58,306 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-08 22:25:58,306 INFO L85 PathProgramCache]: Analyzing trace with hash 1381211174, now seen corresponding path program 5 times [2025-01-08 22:25:58,306 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-08 22:25:58,306 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [912736095] [2025-01-08 22:25:58,306 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2025-01-08 22:25:58,306 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-08 22:25:58,315 INFO L108 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 partitioned 39 statements into 3 equivalence classes. [2025-01-08 22:25:58,333 INFO L111 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) and asserted 39 of 39 statements. [2025-01-08 22:25:58,333 INFO L114 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2025-01-08 22:25:58,333 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-08 22:25:58,441 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2025-01-08 22:25:58,442 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-08 22:25:58,442 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [912736095] [2025-01-08 22:25:58,442 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [912736095] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-08 22:25:58,442 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [886856673] [2025-01-08 22:25:58,442 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2025-01-08 22:25:58,442 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-08 22:25:58,442 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-08 22:25:58,445 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 22:25:58,448 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 22:25:58,488 INFO L108 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 partitioned 39 statements into 3 equivalence classes. [2025-01-08 22:25:58,572 INFO L111 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) and asserted 39 of 39 statements. [2025-01-08 22:25:58,572 INFO L114 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2025-01-08 22:25:58,573 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-08 22:25:58,574 INFO L256 TraceCheckSpWp]: Trace formula consists of 203 conjuncts, 8 conjuncts are in the unsatisfiable core [2025-01-08 22:25:58,576 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-08 22:25:58,649 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2025-01-08 22:25:58,650 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-01-08 22:25:58,724 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2025-01-08 22:25:58,725 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [886856673] provided 0 perfect and 2 imperfect interpolant sequences [2025-01-08 22:25:58,725 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-01-08 22:25:58,725 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 12 [2025-01-08 22:25:58,725 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [340769266] [2025-01-08 22:25:58,725 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-01-08 22:25:58,725 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2025-01-08 22:25:58,725 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-08 22:25:58,726 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2025-01-08 22:25:58,726 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=93, Unknown=0, NotChecked=0, Total=132 [2025-01-08 22:25:58,727 INFO L87 Difference]: Start difference. First operand 72 states and 90 transitions. Second operand has 12 states, 12 states have (on average 2.8333333333333335) internal successors, (34), 12 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 22:25:58,904 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-08 22:25:58,904 INFO L93 Difference]: Finished difference Result 76 states and 94 transitions. [2025-01-08 22:25:58,905 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2025-01-08 22:25:58,905 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 2.8333333333333335) internal successors, (34), 12 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) Word has length 39 [2025-01-08 22:25:58,905 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-08 22:25:58,906 INFO L225 Difference]: With dead ends: 76 [2025-01-08 22:25:58,907 INFO L226 Difference]: Without dead ends: 49 [2025-01-08 22:25:58,908 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 89 GetRequests, 68 SyntacticMatches, 7 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 70 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=73, Invalid=167, Unknown=0, NotChecked=0, Total=240 [2025-01-08 22:25:58,908 INFO L435 NwaCegarLoop]: 7 mSDtfsCounter, 8 mSDsluCounter, 12 mSDsCounter, 0 mSdLazyCounter, 149 mSolverCounterSat, 118 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 19 SdHoareTripleChecker+Invalid, 267 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 118 IncrementalHoareTripleChecker+Valid, 149 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-01-08 22:25:58,908 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 19 Invalid, 267 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [118 Valid, 149 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-01-08 22:25:58,909 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49 states. [2025-01-08 22:25:58,919 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49 to 49. [2025-01-08 22:25:58,919 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 49 states, 48 states have (on average 1.2291666666666667) internal successors, (59), 48 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-08 22:25:58,920 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49 states to 49 states and 59 transitions. [2025-01-08 22:25:58,921 INFO L78 Accepts]: Start accepts. Automaton has 49 states and 59 transitions. Word has length 39 [2025-01-08 22:25:58,921 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-08 22:25:58,921 INFO L471 AbstractCegarLoop]: Abstraction has 49 states and 59 transitions. [2025-01-08 22:25:58,921 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 2.8333333333333335) internal successors, (34), 12 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 22:25:58,922 INFO L276 IsEmpty]: Start isEmpty. Operand 49 states and 59 transitions. [2025-01-08 22:25:58,922 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2025-01-08 22:25:58,922 INFO L210 NwaCegarLoop]: Found error trace [2025-01-08 22:25:58,922 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-08 22:25:58,930 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2025-01-08 22:25:59,126 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,6 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-08 22:25:59,126 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-01-08 22:25:59,126 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-08 22:25:59,127 INFO L85 PathProgramCache]: Analyzing trace with hash 948205599, now seen corresponding path program 6 times [2025-01-08 22:25:59,127 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-08 22:25:59,127 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1449389089] [2025-01-08 22:25:59,127 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2025-01-08 22:25:59,127 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-08 22:25:59,137 INFO L108 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE partitioned 48 statements into 3 equivalence classes. [2025-01-08 22:25:59,156 INFO L111 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) and asserted 48 of 48 statements. [2025-01-08 22:25:59,157 INFO L114 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2025-01-08 22:25:59,157 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-08 22:25:59,271 INFO L134 CoverageAnalysis]: Checked inductivity of 63 backedges. 4 proven. 5 refuted. 0 times theorem prover too weak. 54 trivial. 0 not checked. [2025-01-08 22:25:59,271 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-08 22:25:59,271 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1449389089] [2025-01-08 22:25:59,271 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1449389089] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-08 22:25:59,271 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [331070278] [2025-01-08 22:25:59,271 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2025-01-08 22:25:59,272 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-08 22:25:59,272 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-08 22:25:59,274 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 22:25:59,276 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 22:25:59,318 INFO L108 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE partitioned 48 statements into 3 equivalence classes. [2025-01-08 22:25:59,350 INFO L111 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) and asserted 48 of 48 statements. [2025-01-08 22:25:59,350 INFO L114 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2025-01-08 22:25:59,350 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-08 22:25:59,352 INFO L256 TraceCheckSpWp]: Trace formula consists of 248 conjuncts, 8 conjuncts are in the unsatisfiable core [2025-01-08 22:25:59,353 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-08 22:25:59,435 INFO L134 CoverageAnalysis]: Checked inductivity of 63 backedges. 6 proven. 3 refuted. 0 times theorem prover too weak. 54 trivial. 0 not checked. [2025-01-08 22:25:59,435 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-01-08 22:25:59,508 INFO L134 CoverageAnalysis]: Checked inductivity of 63 backedges. 6 proven. 3 refuted. 0 times theorem prover too weak. 54 trivial. 0 not checked. [2025-01-08 22:25:59,509 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [331070278] provided 0 perfect and 2 imperfect interpolant sequences [2025-01-08 22:25:59,509 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-01-08 22:25:59,509 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 14 [2025-01-08 22:25:59,509 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1434386774] [2025-01-08 22:25:59,509 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-01-08 22:25:59,510 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2025-01-08 22:25:59,510 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-08 22:25:59,510 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2025-01-08 22:25:59,510 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=133, Unknown=0, NotChecked=0, Total=182 [2025-01-08 22:25:59,510 INFO L87 Difference]: Start difference. First operand 49 states and 59 transitions. Second operand has 14 states, 14 states have (on average 2.7142857142857144) internal successors, (38), 14 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-08 22:25:59,592 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-08 22:25:59,593 INFO L93 Difference]: Finished difference Result 93 states and 113 transitions. [2025-01-08 22:25:59,593 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2025-01-08 22:25:59,593 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 2.7142857142857144) internal successors, (38), 14 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 48 [2025-01-08 22:25:59,593 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-08 22:25:59,594 INFO L225 Difference]: With dead ends: 93 [2025-01-08 22:25:59,596 INFO L226 Difference]: Without dead ends: 50 [2025-01-08 22:25:59,596 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 103 GetRequests, 86 SyntacticMatches, 5 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 74 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=49, Invalid=133, Unknown=0, NotChecked=0, Total=182 [2025-01-08 22:25:59,597 INFO L435 NwaCegarLoop]: 24 mSDtfsCounter, 0 mSDsluCounter, 54 mSDsCounter, 0 mSdLazyCounter, 143 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 78 SdHoareTripleChecker+Invalid, 150 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 143 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-01-08 22:25:59,597 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 78 Invalid, 150 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 143 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-01-08 22:25:59,598 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50 states. [2025-01-08 22:25:59,605 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50 to 50. [2025-01-08 22:25:59,606 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 50 states, 49 states have (on average 1.2244897959183674) internal successors, (60), 49 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 22:25:59,606 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 60 transitions. [2025-01-08 22:25:59,606 INFO L78 Accepts]: Start accepts. Automaton has 50 states and 60 transitions. Word has length 48 [2025-01-08 22:25:59,606 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-08 22:25:59,606 INFO L471 AbstractCegarLoop]: Abstraction has 50 states and 60 transitions. [2025-01-08 22:25:59,606 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 2.7142857142857144) internal successors, (38), 14 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-08 22:25:59,607 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 60 transitions. [2025-01-08 22:25:59,607 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2025-01-08 22:25:59,607 INFO L210 NwaCegarLoop]: Found error trace [2025-01-08 22:25:59,607 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-08 22:25:59,635 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 22:25:59,807 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,SelfDestructingSolverStorable7 [2025-01-08 22:25:59,808 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-01-08 22:25:59,809 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-08 22:25:59,809 INFO L85 PathProgramCache]: Analyzing trace with hash -460951238, now seen corresponding path program 7 times [2025-01-08 22:25:59,809 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-08 22:25:59,809 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [578157382] [2025-01-08 22:25:59,809 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2025-01-08 22:25:59,809 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-08 22:25:59,817 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 49 statements into 1 equivalence classes. [2025-01-08 22:25:59,935 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 49 of 49 statements. [2025-01-08 22:25:59,935 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-08 22:25:59,936 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-08 22:26:03,903 INFO L134 CoverageAnalysis]: Checked inductivity of 66 backedges. 0 proven. 66 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-08 22:26:03,904 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-08 22:26:03,904 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [578157382] [2025-01-08 22:26:03,904 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [578157382] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-08 22:26:03,904 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1137240947] [2025-01-08 22:26:03,904 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2025-01-08 22:26:03,904 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-08 22:26:03,904 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-08 22:26:03,906 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 22:26:03,908 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 22:26:03,955 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 49 statements into 1 equivalence classes. [2025-01-08 22:26:03,992 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 49 of 49 statements. [2025-01-08 22:26:03,993 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-08 22:26:03,993 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-08 22:26:03,997 WARN L254 TraceCheckSpWp]: Trace formula consists of 257 conjuncts, 138 conjuncts are in the unsatisfiable core [2025-01-08 22:26:04,002 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-08 22:26:04,033 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 22:26:04,467 INFO L134 CoverageAnalysis]: Checked inductivity of 66 backedges. 0 proven. 66 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-08 22:26:04,467 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-01-08 22:26:04,922 INFO L134 CoverageAnalysis]: Checked inductivity of 66 backedges. 0 proven. 60 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2025-01-08 22:26:04,922 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1137240947] provided 0 perfect and 2 imperfect interpolant sequences [2025-01-08 22:26:04,922 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-01-08 22:26:04,922 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [35, 15, 11] total 47 [2025-01-08 22:26:04,922 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1249579061] [2025-01-08 22:26:04,923 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-01-08 22:26:04,923 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 47 states [2025-01-08 22:26:04,923 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-08 22:26:04,924 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 47 interpolants. [2025-01-08 22:26:04,925 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=174, Invalid=1988, Unknown=0, NotChecked=0, Total=2162 [2025-01-08 22:26:04,925 INFO L87 Difference]: Start difference. First operand 50 states and 60 transitions. Second operand has 47 states, 47 states have (on average 2.765957446808511) internal successors, (130), 47 states have internal predecessors, (130), 0 states have call successors, (0), 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 22:26:07,507 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-08 22:26:07,507 INFO L93 Difference]: Finished difference Result 204 states and 266 transitions. [2025-01-08 22:26:07,507 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2025-01-08 22:26:07,507 INFO L78 Accepts]: Start accepts. Automaton has has 47 states, 47 states have (on average 2.765957446808511) internal successors, (130), 47 states have internal predecessors, (130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 49 [2025-01-08 22:26:07,507 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-08 22:26:07,508 INFO L225 Difference]: With dead ends: 204 [2025-01-08 22:26:07,508 INFO L226 Difference]: Without dead ends: 142 [2025-01-08 22:26:07,510 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 168 GetRequests, 97 SyntacticMatches, 1 SemanticMatches, 70 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1097 ImplicationChecksByTransitivity, 2.3s TimeCoverageRelationStatistics Valid=490, Invalid=4622, Unknown=0, NotChecked=0, Total=5112 [2025-01-08 22:26:07,511 INFO L435 NwaCegarLoop]: 5 mSDtfsCounter, 49 mSDsluCounter, 71 mSDsCounter, 0 mSdLazyCounter, 2242 mSolverCounterSat, 658 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 49 SdHoareTripleChecker+Valid, 76 SdHoareTripleChecker+Invalid, 2900 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 658 IncrementalHoareTripleChecker+Valid, 2242 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2025-01-08 22:26:07,511 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [49 Valid, 76 Invalid, 2900 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [658 Valid, 2242 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2025-01-08 22:26:07,512 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 142 states. [2025-01-08 22:26:07,533 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 142 to 101. [2025-01-08 22:26:07,534 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 101 states, 100 states have (on average 1.27) internal successors, (127), 100 states have internal predecessors, (127), 0 states have call successors, (0), 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 22:26:07,534 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 101 states to 101 states and 127 transitions. [2025-01-08 22:26:07,534 INFO L78 Accepts]: Start accepts. Automaton has 101 states and 127 transitions. Word has length 49 [2025-01-08 22:26:07,535 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-08 22:26:07,535 INFO L471 AbstractCegarLoop]: Abstraction has 101 states and 127 transitions. [2025-01-08 22:26:07,535 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 47 states, 47 states have (on average 2.765957446808511) internal successors, (130), 47 states have internal predecessors, (130), 0 states have call successors, (0), 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 22:26:07,535 INFO L276 IsEmpty]: Start isEmpty. Operand 101 states and 127 transitions. [2025-01-08 22:26:07,538 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2025-01-08 22:26:07,538 INFO L210 NwaCegarLoop]: Found error trace [2025-01-08 22:26:07,539 INFO L218 NwaCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-08 22:26:07,547 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2025-01-08 22:26:07,740 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,8 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-08 22:26:07,740 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-01-08 22:26:07,741 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-08 22:26:07,741 INFO L85 PathProgramCache]: Analyzing trace with hash 1605296238, now seen corresponding path program 8 times [2025-01-08 22:26:07,741 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-08 22:26:07,741 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [908212762] [2025-01-08 22:26:07,741 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-01-08 22:26:07,741 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-08 22:26:07,749 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 51 statements into 2 equivalence classes. [2025-01-08 22:26:07,757 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 51 of 51 statements. [2025-01-08 22:26:07,758 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-01-08 22:26:07,758 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-08 22:26:07,873 INFO L134 CoverageAnalysis]: Checked inductivity of 74 backedges. 3 proven. 13 refuted. 0 times theorem prover too weak. 58 trivial. 0 not checked. [2025-01-08 22:26:07,873 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-08 22:26:07,873 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [908212762] [2025-01-08 22:26:07,873 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [908212762] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-08 22:26:07,873 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1115913383] [2025-01-08 22:26:07,873 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-01-08 22:26:07,874 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-08 22:26:07,874 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-08 22:26:07,876 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 22:26:07,878 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 22:26:07,932 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 51 statements into 2 equivalence classes. [2025-01-08 22:26:07,965 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 51 of 51 statements. [2025-01-08 22:26:07,966 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-01-08 22:26:07,966 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-08 22:26:07,967 INFO L256 TraceCheckSpWp]: Trace formula consists of 271 conjuncts, 10 conjuncts are in the unsatisfiable core [2025-01-08 22:26:07,969 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-08 22:26:08,042 INFO L134 CoverageAnalysis]: Checked inductivity of 74 backedges. 6 proven. 10 refuted. 0 times theorem prover too weak. 58 trivial. 0 not checked. [2025-01-08 22:26:08,043 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-01-08 22:26:08,110 INFO L134 CoverageAnalysis]: Checked inductivity of 74 backedges. 6 proven. 10 refuted. 0 times theorem prover too weak. 58 trivial. 0 not checked. [2025-01-08 22:26:08,111 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1115913383] provided 0 perfect and 2 imperfect interpolant sequences [2025-01-08 22:26:08,111 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-01-08 22:26:08,111 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 17 [2025-01-08 22:26:08,111 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [506386721] [2025-01-08 22:26:08,111 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-01-08 22:26:08,111 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2025-01-08 22:26:08,112 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-08 22:26:08,112 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2025-01-08 22:26:08,112 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2025-01-08 22:26:08,112 INFO L87 Difference]: Start difference. First operand 101 states and 127 transitions. Second operand has 17 states, 17 states have (on average 2.411764705882353) internal successors, (41), 17 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-08 22:26:08,260 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-08 22:26:08,260 INFO L93 Difference]: Finished difference Result 140 states and 180 transitions. [2025-01-08 22:26:08,260 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2025-01-08 22:26:08,260 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.411764705882353) internal successors, (41), 17 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 51 [2025-01-08 22:26:08,261 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-08 22:26:08,261 INFO L225 Difference]: With dead ends: 140 [2025-01-08 22:26:08,261 INFO L226 Difference]: Without dead ends: 61 [2025-01-08 22:26:08,262 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 112 GetRequests, 88 SyntacticMatches, 8 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 141 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=80, Invalid=226, Unknown=0, NotChecked=0, Total=306 [2025-01-08 22:26:08,262 INFO L435 NwaCegarLoop]: 5 mSDtfsCounter, 59 mSDsluCounter, 8 mSDsCounter, 0 mSdLazyCounter, 143 mSolverCounterSat, 117 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 59 SdHoareTripleChecker+Valid, 13 SdHoareTripleChecker+Invalid, 260 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 117 IncrementalHoareTripleChecker+Valid, 143 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-01-08 22:26:08,262 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [59 Valid, 13 Invalid, 260 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [117 Valid, 143 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-01-08 22:26:08,263 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61 states. [2025-01-08 22:26:08,273 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61 to 61. [2025-01-08 22:26:08,277 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 61 states, 60 states have (on average 1.1833333333333333) internal successors, (71), 60 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-08 22:26:08,277 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61 states to 61 states and 71 transitions. [2025-01-08 22:26:08,277 INFO L78 Accepts]: Start accepts. Automaton has 61 states and 71 transitions. Word has length 51 [2025-01-08 22:26:08,278 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-08 22:26:08,278 INFO L471 AbstractCegarLoop]: Abstraction has 61 states and 71 transitions. [2025-01-08 22:26:08,278 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 2.411764705882353) internal successors, (41), 17 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-08 22:26:08,278 INFO L276 IsEmpty]: Start isEmpty. Operand 61 states and 71 transitions. [2025-01-08 22:26:08,278 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2025-01-08 22:26:08,278 INFO L210 NwaCegarLoop]: Found error trace [2025-01-08 22:26:08,278 INFO L218 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-08 22:26:08,287 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2025-01-08 22:26:08,479 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,9 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-08 22:26:08,480 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-01-08 22:26:08,480 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-08 22:26:08,480 INFO L85 PathProgramCache]: Analyzing trace with hash 1347173225, now seen corresponding path program 9 times [2025-01-08 22:26:08,480 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-08 22:26:08,481 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1302981441] [2025-01-08 22:26:08,481 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-01-08 22:26:08,481 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-08 22:26:08,489 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 60 statements into 3 equivalence classes. [2025-01-08 22:26:08,574 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) and asserted 60 of 60 statements. [2025-01-08 22:26:08,574 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2025-01-08 22:26:08,575 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-08 22:26:13,160 INFO L134 CoverageAnalysis]: Checked inductivity of 110 backedges. 0 proven. 104 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2025-01-08 22:26:13,160 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-08 22:26:13,160 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1302981441] [2025-01-08 22:26:13,160 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1302981441] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-08 22:26:13,160 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1753012014] [2025-01-08 22:26:13,160 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-01-08 22:26:13,161 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-08 22:26:13,161 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-08 22:26:13,163 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 22:26:13,165 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 22:26:13,216 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 60 statements into 3 equivalence classes. [2025-01-08 22:26:13,262 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) and asserted 60 of 60 statements. [2025-01-08 22:26:13,262 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2025-01-08 22:26:13,262 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-08 22:26:13,268 WARN L254 TraceCheckSpWp]: Trace formula consists of 316 conjuncts, 185 conjuncts are in the unsatisfiable core [2025-01-08 22:26:13,272 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-08 22:26:13,297 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 22:26:14,722 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-01-08 22:26:14,722 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 15 treesize of output 14 [2025-01-08 22:26:14,809 INFO L134 CoverageAnalysis]: Checked inductivity of 110 backedges. 4 proven. 100 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2025-01-08 22:26:14,809 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-01-08 22:26:16,146 INFO L134 CoverageAnalysis]: Checked inductivity of 110 backedges. 0 proven. 104 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2025-01-08 22:26:16,146 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1753012014] provided 0 perfect and 2 imperfect interpolant sequences [2025-01-08 22:26:16,147 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-01-08 22:26:16,147 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [45, 28, 29] total 91 [2025-01-08 22:26:16,147 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [876675763] [2025-01-08 22:26:16,147 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-01-08 22:26:16,147 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 91 states [2025-01-08 22:26:16,147 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-08 22:26:16,148 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 91 interpolants. [2025-01-08 22:26:16,150 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=693, Invalid=7497, Unknown=0, NotChecked=0, Total=8190 [2025-01-08 22:26:16,150 INFO L87 Difference]: Start difference. First operand 61 states and 71 transitions. Second operand has 91 states, 91 states have (on average 1.7802197802197801) internal successors, (162), 91 states have internal predecessors, (162), 0 states have call successors, (0), 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 22:26:20,921 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-08 22:26:20,921 INFO L93 Difference]: Finished difference Result 316 states and 400 transitions. [2025-01-08 22:26:20,921 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 65 states. [2025-01-08 22:26:20,921 INFO L78 Accepts]: Start accepts. Automaton has has 91 states, 91 states have (on average 1.7802197802197801) internal successors, (162), 91 states have internal predecessors, (162), 0 states have call successors, (0), 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 60 [2025-01-08 22:26:20,922 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-08 22:26:20,924 INFO L225 Difference]: With dead ends: 316 [2025-01-08 22:26:20,924 INFO L226 Difference]: Without dead ends: 271 [2025-01-08 22:26:20,926 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 210 GetRequests, 79 SyntacticMatches, 5 SemanticMatches, 126 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5541 ImplicationChecksByTransitivity, 5.1s TimeCoverageRelationStatistics Valid=1569, Invalid=14687, Unknown=0, NotChecked=0, Total=16256 [2025-01-08 22:26:20,927 INFO L435 NwaCegarLoop]: 5 mSDtfsCounter, 63 mSDsluCounter, 85 mSDsCounter, 0 mSdLazyCounter, 4823 mSolverCounterSat, 1023 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 63 SdHoareTripleChecker+Valid, 90 SdHoareTripleChecker+Invalid, 5846 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1023 IncrementalHoareTripleChecker+Valid, 4823 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.7s IncrementalHoareTripleChecker+Time [2025-01-08 22:26:20,927 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [63 Valid, 90 Invalid, 5846 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1023 Valid, 4823 Invalid, 0 Unknown, 0 Unchecked, 2.7s Time] [2025-01-08 22:26:20,928 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 271 states. [2025-01-08 22:26:20,977 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 271 to 225. [2025-01-08 22:26:20,978 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 225 states, 224 states have (on average 1.2455357142857142) internal successors, (279), 224 states have internal predecessors, (279), 0 states have call successors, (0), 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 22:26:20,978 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 225 states to 225 states and 279 transitions. [2025-01-08 22:26:20,979 INFO L78 Accepts]: Start accepts. Automaton has 225 states and 279 transitions. Word has length 60 [2025-01-08 22:26:20,979 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-08 22:26:20,979 INFO L471 AbstractCegarLoop]: Abstraction has 225 states and 279 transitions. [2025-01-08 22:26:20,979 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 91 states, 91 states have (on average 1.7802197802197801) internal successors, (162), 91 states have internal predecessors, (162), 0 states have call successors, (0), 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 22:26:20,979 INFO L276 IsEmpty]: Start isEmpty. Operand 225 states and 279 transitions. [2025-01-08 22:26:20,980 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2025-01-08 22:26:20,980 INFO L210 NwaCegarLoop]: Found error trace [2025-01-08 22:26:20,980 INFO L218 NwaCegarLoop]: trace histogram [5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-08 22:26:20,987 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 22:26:21,185 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,10 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-08 22:26:21,185 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-01-08 22:26:21,185 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-08 22:26:21,185 INFO L85 PathProgramCache]: Analyzing trace with hash 103837830, now seen corresponding path program 10 times [2025-01-08 22:26:21,185 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-08 22:26:21,185 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [830137228] [2025-01-08 22:26:21,185 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-01-08 22:26:21,185 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-08 22:26:21,192 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 61 statements into 2 equivalence classes. [2025-01-08 22:26:21,199 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 1 check-sat command(s) and asserted 54 of 61 statements. [2025-01-08 22:26:21,199 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 1 check-sat command(s) [2025-01-08 22:26:21,199 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-08 22:26:21,320 INFO L134 CoverageAnalysis]: Checked inductivity of 115 backedges. 15 proven. 10 refuted. 0 times theorem prover too weak. 90 trivial. 0 not checked. [2025-01-08 22:26:21,321 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-08 22:26:21,321 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [830137228] [2025-01-08 22:26:21,321 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [830137228] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-08 22:26:21,321 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [680567785] [2025-01-08 22:26:21,321 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-01-08 22:26:21,321 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-08 22:26:21,322 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-08 22:26:21,324 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 22:26:21,326 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 22:26:21,377 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 61 statements into 2 equivalence classes. [2025-01-08 22:26:21,407 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 1 check-sat command(s) and asserted 54 of 61 statements. [2025-01-08 22:26:21,408 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 1 check-sat command(s) [2025-01-08 22:26:21,408 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-08 22:26:21,409 INFO L256 TraceCheckSpWp]: Trace formula consists of 245 conjuncts, 12 conjuncts are in the unsatisfiable core [2025-01-08 22:26:21,412 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-08 22:26:21,509 INFO L134 CoverageAnalysis]: Checked inductivity of 115 backedges. 15 proven. 10 refuted. 0 times theorem prover too weak. 90 trivial. 0 not checked. [2025-01-08 22:26:21,509 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-01-08 22:26:21,568 INFO L134 CoverageAnalysis]: Checked inductivity of 115 backedges. 15 proven. 10 refuted. 0 times theorem prover too weak. 90 trivial. 0 not checked. [2025-01-08 22:26:21,569 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [680567785] provided 0 perfect and 2 imperfect interpolant sequences [2025-01-08 22:26:21,569 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-01-08 22:26:21,569 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13, 13] total 18 [2025-01-08 22:26:21,569 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1553661428] [2025-01-08 22:26:21,569 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-01-08 22:26:21,569 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2025-01-08 22:26:21,569 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-08 22:26:21,570 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2025-01-08 22:26:21,570 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=83, Invalid=223, Unknown=0, NotChecked=0, Total=306 [2025-01-08 22:26:21,570 INFO L87 Difference]: Start difference. First operand 225 states and 279 transitions. Second operand has 18 states, 18 states have (on average 2.2222222222222223) internal successors, (40), 18 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 22:26:21,835 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-08 22:26:21,835 INFO L93 Difference]: Finished difference Result 346 states and 426 transitions. [2025-01-08 22:26:21,835 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2025-01-08 22:26:21,835 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 2.2222222222222223) internal successors, (40), 18 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) Word has length 61 [2025-01-08 22:26:21,835 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-08 22:26:21,836 INFO L225 Difference]: With dead ends: 346 [2025-01-08 22:26:21,836 INFO L226 Difference]: Without dead ends: 114 [2025-01-08 22:26:21,837 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 138 GetRequests, 107 SyntacticMatches, 10 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 155 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=143, Invalid=363, Unknown=0, NotChecked=0, Total=506 [2025-01-08 22:26:21,837 INFO L435 NwaCegarLoop]: 7 mSDtfsCounter, 3 mSDsluCounter, 22 mSDsCounter, 0 mSdLazyCounter, 264 mSolverCounterSat, 262 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 29 SdHoareTripleChecker+Invalid, 526 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 262 IncrementalHoareTripleChecker+Valid, 264 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2025-01-08 22:26:21,838 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 29 Invalid, 526 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [262 Valid, 264 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2025-01-08 22:26:21,838 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 114 states. [2025-01-08 22:26:21,859 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 114 to 110. [2025-01-08 22:26:21,859 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 110 states, 109 states have (on average 1.1743119266055047) internal successors, (128), 109 states have internal predecessors, (128), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-08 22:26:21,860 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 110 states to 110 states and 128 transitions. [2025-01-08 22:26:21,860 INFO L78 Accepts]: Start accepts. Automaton has 110 states and 128 transitions. Word has length 61 [2025-01-08 22:26:21,860 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-08 22:26:21,860 INFO L471 AbstractCegarLoop]: Abstraction has 110 states and 128 transitions. [2025-01-08 22:26:21,860 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 2.2222222222222223) internal successors, (40), 18 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 22:26:21,860 INFO L276 IsEmpty]: Start isEmpty. Operand 110 states and 128 transitions. [2025-01-08 22:26:21,861 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2025-01-08 22:26:21,861 INFO L210 NwaCegarLoop]: Found error trace [2025-01-08 22:26:21,861 INFO L218 NwaCegarLoop]: trace histogram [5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-08 22:26:21,867 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 22:26:22,061 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,SelfDestructingSolverStorable11 [2025-01-08 22:26:22,061 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-01-08 22:26:22,062 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-08 22:26:22,062 INFO L85 PathProgramCache]: Analyzing trace with hash 85206854, now seen corresponding path program 11 times [2025-01-08 22:26:22,062 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-08 22:26:22,062 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [578679955] [2025-01-08 22:26:22,062 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2025-01-08 22:26:22,062 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-08 22:26:22,070 INFO L108 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 partitioned 61 statements into 4 equivalence classes. [2025-01-08 22:26:22,086 INFO L111 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) and asserted 61 of 61 statements. [2025-01-08 22:26:22,087 INFO L114 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2025-01-08 22:26:22,087 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-08 22:26:22,219 INFO L134 CoverageAnalysis]: Checked inductivity of 115 backedges. 10 proven. 15 refuted. 0 times theorem prover too weak. 90 trivial. 0 not checked. [2025-01-08 22:26:22,219 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-08 22:26:22,219 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [578679955] [2025-01-08 22:26:22,219 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [578679955] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-08 22:26:22,219 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [399166456] [2025-01-08 22:26:22,220 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2025-01-08 22:26:22,220 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-08 22:26:22,220 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-08 22:26:22,222 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 22:26:22,223 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 22:26:22,278 INFO L108 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 partitioned 61 statements into 4 equivalence classes. [2025-01-08 22:26:22,329 INFO L111 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) and asserted 61 of 61 statements. [2025-01-08 22:26:22,330 INFO L114 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2025-01-08 22:26:22,330 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-08 22:26:22,331 INFO L256 TraceCheckSpWp]: Trace formula consists of 321 conjuncts, 12 conjuncts are in the unsatisfiable core [2025-01-08 22:26:22,332 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-08 22:26:22,397 INFO L134 CoverageAnalysis]: Checked inductivity of 115 backedges. 10 proven. 15 refuted. 0 times theorem prover too weak. 90 trivial. 0 not checked. [2025-01-08 22:26:22,397 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-01-08 22:26:22,483 INFO L134 CoverageAnalysis]: Checked inductivity of 115 backedges. 10 proven. 15 refuted. 0 times theorem prover too weak. 90 trivial. 0 not checked. [2025-01-08 22:26:22,484 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [399166456] provided 0 perfect and 2 imperfect interpolant sequences [2025-01-08 22:26:22,484 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-01-08 22:26:22,484 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13, 13] total 18 [2025-01-08 22:26:22,484 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1156491126] [2025-01-08 22:26:22,484 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-01-08 22:26:22,484 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2025-01-08 22:26:22,484 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-08 22:26:22,485 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2025-01-08 22:26:22,485 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=83, Invalid=223, Unknown=0, NotChecked=0, Total=306 [2025-01-08 22:26:22,485 INFO L87 Difference]: Start difference. First operand 110 states and 128 transitions. Second operand has 18 states, 18 states have (on average 2.2222222222222223) internal successors, (40), 18 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 22:26:22,687 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-08 22:26:22,688 INFO L93 Difference]: Finished difference Result 114 states and 132 transitions. [2025-01-08 22:26:22,688 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2025-01-08 22:26:22,688 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 2.2222222222222223) internal successors, (40), 18 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) Word has length 61 [2025-01-08 22:26:22,688 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-08 22:26:22,689 INFO L225 Difference]: With dead ends: 114 [2025-01-08 22:26:22,689 INFO L226 Difference]: Without dead ends: 71 [2025-01-08 22:26:22,689 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 139 GetRequests, 106 SyntacticMatches, 11 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 208 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=152, Invalid=400, Unknown=0, NotChecked=0, Total=552 [2025-01-08 22:26:22,690 INFO L435 NwaCegarLoop]: 7 mSDtfsCounter, 15 mSDsluCounter, 20 mSDsCounter, 0 mSdLazyCounter, 287 mSolverCounterSat, 218 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15 SdHoareTripleChecker+Valid, 27 SdHoareTripleChecker+Invalid, 505 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 218 IncrementalHoareTripleChecker+Valid, 287 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2025-01-08 22:26:22,690 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [15 Valid, 27 Invalid, 505 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [218 Valid, 287 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2025-01-08 22:26:22,690 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 71 states. [2025-01-08 22:26:22,708 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 71 to 71. [2025-01-08 22:26:22,708 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 71 states, 70 states have (on average 1.1571428571428573) internal successors, (81), 70 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-08 22:26:22,708 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 71 states to 71 states and 81 transitions. [2025-01-08 22:26:22,709 INFO L78 Accepts]: Start accepts. Automaton has 71 states and 81 transitions. Word has length 61 [2025-01-08 22:26:22,709 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-08 22:26:22,709 INFO L471 AbstractCegarLoop]: Abstraction has 71 states and 81 transitions. [2025-01-08 22:26:22,709 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 2.2222222222222223) internal successors, (40), 18 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 22:26:22,709 INFO L276 IsEmpty]: Start isEmpty. Operand 71 states and 81 transitions. [2025-01-08 22:26:22,709 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2025-01-08 22:26:22,710 INFO L210 NwaCegarLoop]: Found error trace [2025-01-08 22:26:22,710 INFO L218 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-08 22:26:22,718 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 22:26:22,910 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,SelfDestructingSolverStorable12 [2025-01-08 22:26:22,910 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-01-08 22:26:22,911 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-08 22:26:22,911 INFO L85 PathProgramCache]: Analyzing trace with hash 397867775, now seen corresponding path program 12 times [2025-01-08 22:26:22,911 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-08 22:26:22,911 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [296094067] [2025-01-08 22:26:22,911 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2025-01-08 22:26:22,911 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-08 22:26:22,919 INFO L108 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE partitioned 70 statements into 4 equivalence classes. [2025-01-08 22:26:22,956 INFO L111 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) and asserted 70 of 70 statements. [2025-01-08 22:26:22,957 INFO L114 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) [2025-01-08 22:26:22,957 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-08 22:26:23,103 INFO L134 CoverageAnalysis]: Checked inductivity of 160 backedges. 11 proven. 14 refuted. 0 times theorem prover too weak. 135 trivial. 0 not checked. [2025-01-08 22:26:23,103 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-08 22:26:23,103 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [296094067] [2025-01-08 22:26:23,104 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [296094067] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-08 22:26:23,104 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [802546258] [2025-01-08 22:26:23,104 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2025-01-08 22:26:23,104 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-08 22:26:23,104 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-08 22:26:23,106 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 22:26:23,109 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 22:26:23,161 INFO L108 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE partitioned 70 statements into 4 equivalence classes. [2025-01-08 22:26:23,211 INFO L111 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) and asserted 70 of 70 statements. [2025-01-08 22:26:23,212 INFO L114 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) [2025-01-08 22:26:23,212 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-08 22:26:23,214 INFO L256 TraceCheckSpWp]: Trace formula consists of 366 conjuncts, 12 conjuncts are in the unsatisfiable core [2025-01-08 22:26:23,215 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-08 22:26:23,327 INFO L134 CoverageAnalysis]: Checked inductivity of 160 backedges. 15 proven. 10 refuted. 0 times theorem prover too weak. 135 trivial. 0 not checked. [2025-01-08 22:26:23,327 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-01-08 22:26:23,423 INFO L134 CoverageAnalysis]: Checked inductivity of 160 backedges. 15 proven. 10 refuted. 0 times theorem prover too weak. 135 trivial. 0 not checked. [2025-01-08 22:26:23,423 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [802546258] provided 0 perfect and 2 imperfect interpolant sequences [2025-01-08 22:26:23,423 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-01-08 22:26:23,423 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13, 13] total 20 [2025-01-08 22:26:23,423 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1032838806] [2025-01-08 22:26:23,424 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-01-08 22:26:23,424 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2025-01-08 22:26:23,424 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-08 22:26:23,424 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2025-01-08 22:26:23,425 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=95, Invalid=285, Unknown=0, NotChecked=0, Total=380 [2025-01-08 22:26:23,425 INFO L87 Difference]: Start difference. First operand 71 states and 81 transitions. Second operand has 20 states, 20 states have (on average 2.2) internal successors, (44), 20 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 22:26:23,510 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-08 22:26:23,510 INFO L93 Difference]: Finished difference Result 135 states and 155 transitions. [2025-01-08 22:26:23,510 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2025-01-08 22:26:23,511 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 2.2) internal successors, (44), 20 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) Word has length 70 [2025-01-08 22:26:23,511 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-08 22:26:23,511 INFO L225 Difference]: With dead ends: 135 [2025-01-08 22:26:23,511 INFO L226 Difference]: Without dead ends: 72 [2025-01-08 22:26:23,512 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 151 GetRequests, 124 SyntacticMatches, 9 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 196 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=95, Invalid=285, Unknown=0, NotChecked=0, Total=380 [2025-01-08 22:26:23,512 INFO L435 NwaCegarLoop]: 24 mSDtfsCounter, 0 mSDsluCounter, 72 mSDsCounter, 0 mSdLazyCounter, 113 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 96 SdHoareTripleChecker+Invalid, 130 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 113 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-01-08 22:26:23,512 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 96 Invalid, 130 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 113 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-01-08 22:26:23,513 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 72 states. [2025-01-08 22:26:23,524 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 72 to 72. [2025-01-08 22:26:23,524 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 72 states, 71 states have (on average 1.1549295774647887) internal successors, (82), 71 states have internal predecessors, (82), 0 states have call successors, (0), 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 22:26:23,525 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 72 states to 72 states and 82 transitions. [2025-01-08 22:26:23,525 INFO L78 Accepts]: Start accepts. Automaton has 72 states and 82 transitions. Word has length 70 [2025-01-08 22:26:23,525 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-08 22:26:23,525 INFO L471 AbstractCegarLoop]: Abstraction has 72 states and 82 transitions. [2025-01-08 22:26:23,526 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 2.2) internal successors, (44), 20 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 22:26:23,526 INFO L276 IsEmpty]: Start isEmpty. Operand 72 states and 82 transitions. [2025-01-08 22:26:23,526 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2025-01-08 22:26:23,526 INFO L210 NwaCegarLoop]: Found error trace [2025-01-08 22:26:23,526 INFO L218 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-08 22:26:23,534 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2025-01-08 22:26:23,731 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13,13 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-08 22:26:23,731 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-01-08 22:26:23,731 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-08 22:26:23,731 INFO L85 PathProgramCache]: Analyzing trace with hash 1849908698, now seen corresponding path program 13 times [2025-01-08 22:26:23,731 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-08 22:26:23,731 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1943625680] [2025-01-08 22:26:23,731 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2025-01-08 22:26:23,731 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-08 22:26:23,738 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 71 statements into 1 equivalence classes. [2025-01-08 22:26:23,882 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 71 of 71 statements. [2025-01-08 22:26:23,882 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-08 22:26:23,883 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-08 22:26:30,607 INFO L134 CoverageAnalysis]: Checked inductivity of 165 backedges. 7 proven. 158 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-08 22:26:30,607 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-08 22:26:30,607 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1943625680] [2025-01-08 22:26:30,607 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1943625680] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-08 22:26:30,607 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [118981953] [2025-01-08 22:26:30,607 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2025-01-08 22:26:30,607 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-08 22:26:30,607 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-08 22:26:30,609 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 22:26:30,611 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 22:26:30,666 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 71 statements into 1 equivalence classes. [2025-01-08 22:26:30,717 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 71 of 71 statements. [2025-01-08 22:26:30,717 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-08 22:26:30,718 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-08 22:26:30,722 WARN L254 TraceCheckSpWp]: Trace formula consists of 375 conjuncts, 222 conjuncts are in the unsatisfiable core [2025-01-08 22:26:30,725 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-08 22:26:30,745 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 22:26:31,226 INFO L134 CoverageAnalysis]: Checked inductivity of 165 backedges. 0 proven. 165 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-08 22:26:31,226 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-01-08 22:26:31,857 INFO L134 CoverageAnalysis]: Checked inductivity of 165 backedges. 0 proven. 150 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2025-01-08 22:26:31,857 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [118981953] provided 0 perfect and 2 imperfect interpolant sequences [2025-01-08 22:26:31,857 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-01-08 22:26:31,857 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [51, 21, 15] total 68 [2025-01-08 22:26:31,857 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [796527898] [2025-01-08 22:26:31,857 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-01-08 22:26:31,858 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 68 states [2025-01-08 22:26:31,858 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-08 22:26:31,858 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 68 interpolants. [2025-01-08 22:26:31,860 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=269, Invalid=4287, Unknown=0, NotChecked=0, Total=4556 [2025-01-08 22:26:31,860 INFO L87 Difference]: Start difference. First operand 72 states and 82 transitions. Second operand has 68 states, 68 states have (on average 2.7794117647058822) internal successors, (189), 68 states have internal predecessors, (189), 0 states have call successors, (0), 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 22:26:35,203 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-08 22:26:35,203 INFO L93 Difference]: Finished difference Result 158 states and 196 transitions. [2025-01-08 22:26:35,204 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2025-01-08 22:26:35,204 INFO L78 Accepts]: Start accepts. Automaton has has 68 states, 68 states have (on average 2.7794117647058822) internal successors, (189), 68 states have internal predecessors, (189), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 71 [2025-01-08 22:26:35,204 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-08 22:26:35,205 INFO L225 Difference]: With dead ends: 158 [2025-01-08 22:26:35,205 INFO L226 Difference]: Without dead ends: 155 [2025-01-08 22:26:35,207 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 237 GetRequests, 140 SyntacticMatches, 3 SemanticMatches, 94 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2149 ImplicationChecksByTransitivity, 3.3s TimeCoverageRelationStatistics Valid=660, Invalid=8460, Unknown=0, NotChecked=0, Total=9120 [2025-01-08 22:26:35,207 INFO L435 NwaCegarLoop]: 5 mSDtfsCounter, 7 mSDsluCounter, 86 mSDsCounter, 0 mSdLazyCounter, 3427 mSolverCounterSat, 822 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 91 SdHoareTripleChecker+Invalid, 4249 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 822 IncrementalHoareTripleChecker+Valid, 3427 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2025-01-08 22:26:35,207 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 91 Invalid, 4249 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [822 Valid, 3427 Invalid, 0 Unknown, 0 Unchecked, 1.9s Time] [2025-01-08 22:26:35,208 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 155 states. [2025-01-08 22:26:35,232 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 155 to 74. [2025-01-08 22:26:35,232 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 74 states, 73 states have (on average 1.1643835616438356) internal successors, (85), 73 states have internal predecessors, (85), 0 states have call successors, (0), 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 22:26:35,232 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 74 states to 74 states and 85 transitions. [2025-01-08 22:26:35,233 INFO L78 Accepts]: Start accepts. Automaton has 74 states and 85 transitions. Word has length 71 [2025-01-08 22:26:35,233 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-08 22:26:35,233 INFO L471 AbstractCegarLoop]: Abstraction has 74 states and 85 transitions. [2025-01-08 22:26:35,233 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 68 states, 68 states have (on average 2.7794117647058822) internal successors, (189), 68 states have internal predecessors, (189), 0 states have call successors, (0), 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 22:26:35,234 INFO L276 IsEmpty]: Start isEmpty. Operand 74 states and 85 transitions. [2025-01-08 22:26:35,234 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2025-01-08 22:26:35,234 INFO L210 NwaCegarLoop]: Found error trace [2025-01-08 22:26:35,234 INFO L218 NwaCegarLoop]: trace histogram [6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-08 22:26:35,241 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Ended with exit code 0 [2025-01-08 22:26:35,434 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14,14 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-08 22:26:35,435 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-01-08 22:26:35,435 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-08 22:26:35,435 INFO L85 PathProgramCache]: Analyzing trace with hash 1512532339, now seen corresponding path program 14 times [2025-01-08 22:26:35,435 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-08 22:26:35,435 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1556626330] [2025-01-08 22:26:35,435 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-01-08 22:26:35,435 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-08 22:26:35,444 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 72 statements into 2 equivalence classes. [2025-01-08 22:26:35,453 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 72 of 72 statements. [2025-01-08 22:26:35,453 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-01-08 22:26:35,453 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-08 22:26:35,652 INFO L134 CoverageAnalysis]: Checked inductivity of 171 backedges. 16 proven. 20 refuted. 0 times theorem prover too weak. 135 trivial. 0 not checked. [2025-01-08 22:26:35,652 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-08 22:26:35,652 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1556626330] [2025-01-08 22:26:35,652 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1556626330] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-08 22:26:35,652 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1322838238] [2025-01-08 22:26:35,652 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-01-08 22:26:35,652 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-08 22:26:35,653 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-08 22:26:35,655 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 22:26:35,658 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 22:26:35,715 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 72 statements into 2 equivalence classes. [2025-01-08 22:26:35,760 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 72 of 72 statements. [2025-01-08 22:26:35,761 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-01-08 22:26:35,761 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-08 22:26:35,766 INFO L256 TraceCheckSpWp]: Trace formula consists of 380 conjuncts, 14 conjuncts are in the unsatisfiable core [2025-01-08 22:26:35,767 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-08 22:26:35,937 INFO L134 CoverageAnalysis]: Checked inductivity of 171 backedges. 21 proven. 15 refuted. 0 times theorem prover too weak. 135 trivial. 0 not checked. [2025-01-08 22:26:35,937 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-01-08 22:26:36,084 INFO L134 CoverageAnalysis]: Checked inductivity of 171 backedges. 21 proven. 15 refuted. 0 times theorem prover too weak. 135 trivial. 0 not checked. [2025-01-08 22:26:36,084 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1322838238] provided 0 perfect and 2 imperfect interpolant sequences [2025-01-08 22:26:36,084 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-01-08 22:26:36,084 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15, 15] total 23 [2025-01-08 22:26:36,084 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [534923040] [2025-01-08 22:26:36,084 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-01-08 22:26:36,084 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2025-01-08 22:26:36,084 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-08 22:26:36,085 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2025-01-08 22:26:36,085 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=124, Invalid=382, Unknown=0, NotChecked=0, Total=506 [2025-01-08 22:26:36,085 INFO L87 Difference]: Start difference. First operand 74 states and 85 transitions. Second operand has 23 states, 23 states have (on average 2.0434782608695654) internal successors, (47), 23 states have internal predecessors, (47), 0 states have call successors, (0), 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 22:26:36,304 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-08 22:26:36,304 INFO L93 Difference]: Finished difference Result 195 states and 226 transitions. [2025-01-08 22:26:36,304 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2025-01-08 22:26:36,304 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 23 states have (on average 2.0434782608695654) internal successors, (47), 23 states have internal predecessors, (47), 0 states have call successors, (0), 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 22:26:36,304 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-08 22:26:36,305 INFO L225 Difference]: With dead ends: 195 [2025-01-08 22:26:36,305 INFO L226 Difference]: Without dead ends: 75 [2025-01-08 22:26:36,305 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 157 GetRequests, 125 SyntacticMatches, 11 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 275 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=124, Invalid=382, Unknown=0, NotChecked=0, Total=506 [2025-01-08 22:26:36,306 INFO L435 NwaCegarLoop]: 6 mSDtfsCounter, 0 mSDsluCounter, 12 mSDsCounter, 0 mSdLazyCounter, 448 mSolverCounterSat, 118 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 18 SdHoareTripleChecker+Invalid, 566 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 118 IncrementalHoareTripleChecker+Valid, 448 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2025-01-08 22:26:36,306 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 18 Invalid, 566 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [118 Valid, 448 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2025-01-08 22:26:36,307 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 75 states. [2025-01-08 22:26:36,325 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 75 to 75. [2025-01-08 22:26:36,325 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 75 states, 74 states have (on average 1.162162162162162) internal successors, (86), 74 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-08 22:26:36,326 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 75 states to 75 states and 86 transitions. [2025-01-08 22:26:36,326 INFO L78 Accepts]: Start accepts. Automaton has 75 states and 86 transitions. Word has length 72 [2025-01-08 22:26:36,326 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-08 22:26:36,326 INFO L471 AbstractCegarLoop]: Abstraction has 75 states and 86 transitions. [2025-01-08 22:26:36,327 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 2.0434782608695654) internal successors, (47), 23 states have internal predecessors, (47), 0 states have call successors, (0), 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 22:26:36,327 INFO L276 IsEmpty]: Start isEmpty. Operand 75 states and 86 transitions. [2025-01-08 22:26:36,327 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2025-01-08 22:26:36,327 INFO L210 NwaCegarLoop]: Found error trace [2025-01-08 22:26:36,327 INFO L218 NwaCegarLoop]: trace histogram [6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-08 22:26:36,335 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Ended with exit code 0 [2025-01-08 22:26:36,527 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,SelfDestructingSolverStorable15 [2025-01-08 22:26:36,528 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-01-08 22:26:36,528 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-08 22:26:36,528 INFO L85 PathProgramCache]: Analyzing trace with hash 1059488142, now seen corresponding path program 15 times [2025-01-08 22:26:36,528 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-08 22:26:36,528 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1155331880] [2025-01-08 22:26:36,528 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-01-08 22:26:36,528 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-08 22:26:36,535 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 73 statements into 4 equivalence classes. [2025-01-08 22:26:36,558 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) and asserted 73 of 73 statements. [2025-01-08 22:26:36,558 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2025-01-08 22:26:36,558 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-08 22:26:36,754 INFO L134 CoverageAnalysis]: Checked inductivity of 177 backedges. 16 proven. 20 refuted. 0 times theorem prover too weak. 141 trivial. 0 not checked. [2025-01-08 22:26:36,754 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-08 22:26:36,754 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1155331880] [2025-01-08 22:26:36,755 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1155331880] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-08 22:26:36,755 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1021792435] [2025-01-08 22:26:36,755 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-01-08 22:26:36,755 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-08 22:26:36,755 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-08 22:26:36,757 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 22:26:36,759 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 22:26:36,820 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 73 statements into 4 equivalence classes. [2025-01-08 22:26:36,880 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) and asserted 73 of 73 statements. [2025-01-08 22:26:36,880 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2025-01-08 22:26:36,880 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-08 22:26:36,883 INFO L256 TraceCheckSpWp]: Trace formula consists of 389 conjuncts, 14 conjuncts are in the unsatisfiable core [2025-01-08 22:26:36,885 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-08 22:26:37,008 INFO L134 CoverageAnalysis]: Checked inductivity of 177 backedges. 21 proven. 15 refuted. 0 times theorem prover too weak. 141 trivial. 0 not checked. [2025-01-08 22:26:37,008 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-01-08 22:26:37,094 INFO L134 CoverageAnalysis]: Checked inductivity of 177 backedges. 21 proven. 15 refuted. 0 times theorem prover too weak. 141 trivial. 0 not checked. [2025-01-08 22:26:37,095 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1021792435] provided 0 perfect and 2 imperfect interpolant sequences [2025-01-08 22:26:37,095 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-01-08 22:26:37,095 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15, 15] total 23 [2025-01-08 22:26:37,095 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [459685826] [2025-01-08 22:26:37,095 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-01-08 22:26:37,095 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2025-01-08 22:26:37,095 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-08 22:26:37,096 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2025-01-08 22:26:37,096 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=131, Invalid=375, Unknown=0, NotChecked=0, Total=506 [2025-01-08 22:26:37,096 INFO L87 Difference]: Start difference. First operand 75 states and 86 transitions. Second operand has 23 states, 23 states have (on average 2.0434782608695654) internal successors, (47), 23 states have internal predecessors, (47), 0 states have call successors, (0), 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 22:26:37,445 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-08 22:26:37,445 INFO L93 Difference]: Finished difference Result 194 states and 230 transitions. [2025-01-08 22:26:37,445 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2025-01-08 22:26:37,445 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 23 states have (on average 2.0434782608695654) internal successors, (47), 23 states have internal predecessors, (47), 0 states have call successors, (0), 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 22:26:37,445 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-08 22:26:37,446 INFO L225 Difference]: With dead ends: 194 [2025-01-08 22:26:37,446 INFO L226 Difference]: Without dead ends: 86 [2025-01-08 22:26:37,446 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 169 GetRequests, 132 SyntacticMatches, 11 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 333 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=201, Invalid=555, Unknown=0, NotChecked=0, Total=756 [2025-01-08 22:26:37,447 INFO L435 NwaCegarLoop]: 7 mSDtfsCounter, 2 mSDsluCounter, 14 mSDsCounter, 0 mSdLazyCounter, 380 mSolverCounterSat, 421 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 21 SdHoareTripleChecker+Invalid, 801 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 421 IncrementalHoareTripleChecker+Valid, 380 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2025-01-08 22:26:37,447 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 21 Invalid, 801 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [421 Valid, 380 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2025-01-08 22:26:37,447 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 86 states. [2025-01-08 22:26:37,468 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 86 to 82. [2025-01-08 22:26:37,469 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 82 states, 81 states have (on average 1.1358024691358024) internal successors, (92), 81 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-08 22:26:37,469 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 82 states to 82 states and 92 transitions. [2025-01-08 22:26:37,470 INFO L78 Accepts]: Start accepts. Automaton has 82 states and 92 transitions. Word has length 73 [2025-01-08 22:26:37,470 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-08 22:26:37,470 INFO L471 AbstractCegarLoop]: Abstraction has 82 states and 92 transitions. [2025-01-08 22:26:37,470 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 2.0434782608695654) internal successors, (47), 23 states have internal predecessors, (47), 0 states have call successors, (0), 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 22:26:37,470 INFO L276 IsEmpty]: Start isEmpty. Operand 82 states and 92 transitions. [2025-01-08 22:26:37,470 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2025-01-08 22:26:37,470 INFO L210 NwaCegarLoop]: Found error trace [2025-01-08 22:26:37,471 INFO L218 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-08 22:26:37,479 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2025-01-08 22:26:37,671 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2025-01-08 22:26:37,671 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-01-08 22:26:37,671 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-08 22:26:37,672 INFO L85 PathProgramCache]: Analyzing trace with hash -1958114620, now seen corresponding path program 16 times [2025-01-08 22:26:37,672 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-08 22:26:37,672 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1165973717] [2025-01-08 22:26:37,672 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-01-08 22:26:37,672 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-08 22:26:37,682 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 81 statements into 2 equivalence classes. [2025-01-08 22:26:37,692 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 1 check-sat command(s) and asserted 72 of 81 statements. [2025-01-08 22:26:37,692 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 1 check-sat command(s) [2025-01-08 22:26:37,692 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-08 22:26:37,860 INFO L134 CoverageAnalysis]: Checked inductivity of 225 backedges. 15 proven. 21 refuted. 0 times theorem prover too weak. 189 trivial. 0 not checked. [2025-01-08 22:26:37,860 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-08 22:26:37,861 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1165973717] [2025-01-08 22:26:37,861 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1165973717] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-08 22:26:37,861 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [747571342] [2025-01-08 22:26:37,861 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-01-08 22:26:37,861 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-08 22:26:37,861 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-08 22:26:37,863 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 22:26:37,865 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 22:26:37,930 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 81 statements into 2 equivalence classes. [2025-01-08 22:26:37,972 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 1 check-sat command(s) and asserted 72 of 81 statements. [2025-01-08 22:26:37,972 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 1 check-sat command(s) [2025-01-08 22:26:37,972 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-08 22:26:37,974 INFO L256 TraceCheckSpWp]: Trace formula consists of 335 conjuncts, 14 conjuncts are in the unsatisfiable core [2025-01-08 22:26:37,976 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-08 22:26:38,128 INFO L134 CoverageAnalysis]: Checked inductivity of 225 backedges. 15 proven. 21 refuted. 0 times theorem prover too weak. 189 trivial. 0 not checked. [2025-01-08 22:26:38,128 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-01-08 22:26:38,272 INFO L134 CoverageAnalysis]: Checked inductivity of 225 backedges. 15 proven. 21 refuted. 0 times theorem prover too weak. 189 trivial. 0 not checked. [2025-01-08 22:26:38,272 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [747571342] provided 0 perfect and 2 imperfect interpolant sequences [2025-01-08 22:26:38,272 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-01-08 22:26:38,272 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15, 15] total 21 [2025-01-08 22:26:38,272 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1369938071] [2025-01-08 22:26:38,272 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-01-08 22:26:38,273 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2025-01-08 22:26:38,273 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-08 22:26:38,273 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2025-01-08 22:26:38,273 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=111, Invalid=309, Unknown=0, NotChecked=0, Total=420 [2025-01-08 22:26:38,273 INFO L87 Difference]: Start difference. First operand 82 states and 92 transitions. Second operand has 21 states, 21 states have (on average 2.0476190476190474) internal successors, (43), 21 states have internal predecessors, (43), 0 states have call successors, (0), 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 22:26:38,516 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-08 22:26:38,517 INFO L93 Difference]: Finished difference Result 86 states and 96 transitions. [2025-01-08 22:26:38,517 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2025-01-08 22:26:38,517 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 2.0476190476190474) internal successors, (43), 21 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 81 [2025-01-08 22:26:38,517 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-08 22:26:38,518 INFO L225 Difference]: With dead ends: 86 [2025-01-08 22:26:38,518 INFO L226 Difference]: Without dead ends: 83 [2025-01-08 22:26:38,518 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 182 GetRequests, 143 SyntacticMatches, 13 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 304 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=202, Invalid=554, Unknown=0, NotChecked=0, Total=756 [2025-01-08 22:26:38,518 INFO L435 NwaCegarLoop]: 7 mSDtfsCounter, 5 mSDsluCounter, 12 mSDsCounter, 0 mSdLazyCounter, 283 mSolverCounterSat, 331 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 19 SdHoareTripleChecker+Invalid, 614 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 331 IncrementalHoareTripleChecker+Valid, 283 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2025-01-08 22:26:38,519 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [5 Valid, 19 Invalid, 614 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [331 Valid, 283 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2025-01-08 22:26:38,519 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 83 states. [2025-01-08 22:26:38,539 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 83 to 83. [2025-01-08 22:26:38,539 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 83 states, 82 states have (on average 1.1341463414634145) internal successors, (93), 82 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 22:26:38,540 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 83 states to 83 states and 93 transitions. [2025-01-08 22:26:38,540 INFO L78 Accepts]: Start accepts. Automaton has 83 states and 93 transitions. Word has length 81 [2025-01-08 22:26:38,541 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-08 22:26:38,541 INFO L471 AbstractCegarLoop]: Abstraction has 83 states and 93 transitions. [2025-01-08 22:26:38,541 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 2.0476190476190474) internal successors, (43), 21 states have internal predecessors, (43), 0 states have call successors, (0), 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 22:26:38,541 INFO L276 IsEmpty]: Start isEmpty. Operand 83 states and 93 transitions. [2025-01-08 22:26:38,541 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2025-01-08 22:26:38,541 INFO L210 NwaCegarLoop]: Found error trace [2025-01-08 22:26:38,541 INFO L218 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-08 22:26:38,549 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 22:26:38,742 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2025-01-08 22:26:38,742 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-01-08 22:26:38,743 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-08 22:26:38,743 INFO L85 PathProgramCache]: Analyzing trace with hash -572073527, now seen corresponding path program 17 times [2025-01-08 22:26:38,743 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-08 22:26:38,743 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [381303650] [2025-01-08 22:26:38,743 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2025-01-08 22:26:38,743 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-08 22:26:38,751 INFO L108 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 partitioned 82 statements into 4 equivalence classes. [2025-01-08 22:26:39,089 INFO L111 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) and asserted 82 of 82 statements. [2025-01-08 22:26:39,089 INFO L114 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2025-01-08 22:26:39,089 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-08 22:26:45,766 INFO L134 CoverageAnalysis]: Checked inductivity of 231 backedges. 0 proven. 231 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-08 22:26:45,766 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-08 22:26:45,766 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [381303650] [2025-01-08 22:26:45,766 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [381303650] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-08 22:26:45,766 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1383868377] [2025-01-08 22:26:45,766 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2025-01-08 22:26:45,767 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-08 22:26:45,767 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-08 22:26:45,769 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 22:26:45,771 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 22:26:45,840 INFO L108 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 partitioned 82 statements into 4 equivalence classes. [2025-01-08 22:26:46,138 INFO L111 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) and asserted 82 of 82 statements. [2025-01-08 22:26:46,138 INFO L114 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2025-01-08 22:26:46,138 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-08 22:26:46,146 WARN L254 TraceCheckSpWp]: Trace formula consists of 434 conjuncts, 265 conjuncts are in the unsatisfiable core [2025-01-08 22:26:46,151 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-08 22:26:46,173 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 22:26:46,184 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 22:26:46,189 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 22:26:46,614 INFO L134 CoverageAnalysis]: Checked inductivity of 231 backedges. 0 proven. 231 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-08 22:26:46,614 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-01-08 22:26:47,094 INFO L134 CoverageAnalysis]: Checked inductivity of 231 backedges. 0 proven. 210 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2025-01-08 22:26:47,094 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1383868377] provided 0 perfect and 2 imperfect interpolant sequences [2025-01-08 22:26:47,094 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-01-08 22:26:47,094 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [32, 24, 17] total 42 [2025-01-08 22:26:47,094 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [875116681] [2025-01-08 22:26:47,094 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-01-08 22:26:47,095 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 42 states [2025-01-08 22:26:47,095 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-08 22:26:47,095 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 42 interpolants. [2025-01-08 22:26:47,096 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=120, Invalid=1602, Unknown=0, NotChecked=0, Total=1722 [2025-01-08 22:26:47,096 INFO L87 Difference]: Start difference. First operand 83 states and 93 transitions. Second operand has 42 states, 42 states have (on average 4.119047619047619) internal successors, (173), 42 states have internal predecessors, (173), 0 states have call successors, (0), 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 22:26:48,114 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-08 22:26:48,115 INFO L93 Difference]: Finished difference Result 150 states and 169 transitions. [2025-01-08 22:26:48,115 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2025-01-08 22:26:48,115 INFO L78 Accepts]: Start accepts. Automaton has has 42 states, 42 states have (on average 4.119047619047619) internal successors, (173), 42 states have internal predecessors, (173), 0 states have call successors, (0), 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 82 [2025-01-08 22:26:48,115 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-08 22:26:48,117 INFO L225 Difference]: With dead ends: 150 [2025-01-08 22:26:48,117 INFO L226 Difference]: Without dead ends: 147 [2025-01-08 22:26:48,117 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 242 GetRequests, 201 SyntacticMatches, 1 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 283 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=120, Invalid=1602, Unknown=0, NotChecked=0, Total=1722 [2025-01-08 22:26:48,118 INFO L435 NwaCegarLoop]: 15 mSDtfsCounter, 1 mSDsluCounter, 123 mSDsCounter, 0 mSdLazyCounter, 2065 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 138 SdHoareTripleChecker+Invalid, 2066 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 2065 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2025-01-08 22:26:48,118 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 138 Invalid, 2066 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 2065 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2025-01-08 22:26:48,118 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 147 states. [2025-01-08 22:26:48,161 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 147 to 141. [2025-01-08 22:26:48,161 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 141 states, 140 states have (on average 1.1428571428571428) internal successors, (160), 140 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 22:26:48,162 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 141 states to 141 states and 160 transitions. [2025-01-08 22:26:48,162 INFO L78 Accepts]: Start accepts. Automaton has 141 states and 160 transitions. Word has length 82 [2025-01-08 22:26:48,162 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-08 22:26:48,162 INFO L471 AbstractCegarLoop]: Abstraction has 141 states and 160 transitions. [2025-01-08 22:26:48,163 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 42 states, 42 states have (on average 4.119047619047619) internal successors, (173), 42 states have internal predecessors, (173), 0 states have call successors, (0), 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 22:26:48,163 INFO L276 IsEmpty]: Start isEmpty. Operand 141 states and 160 transitions. [2025-01-08 22:26:48,163 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2025-01-08 22:26:48,163 INFO L210 NwaCegarLoop]: Found error trace [2025-01-08 22:26:48,163 INFO L218 NwaCegarLoop]: trace histogram [7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-08 22:26:48,172 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 22:26:48,364 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,18 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-08 22:26:48,364 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-01-08 22:26:48,364 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-08 22:26:48,364 INFO L85 PathProgramCache]: Analyzing trace with hash -1504087452, now seen corresponding path program 18 times [2025-01-08 22:26:48,364 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-08 22:26:48,365 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1575375256] [2025-01-08 22:26:48,365 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2025-01-08 22:26:48,365 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-08 22:26:48,375 INFO L108 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE partitioned 83 statements into 5 equivalence classes. [2025-01-08 22:26:48,399 INFO L111 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 5 check-sat command(s) and asserted 83 of 83 statements. [2025-01-08 22:26:48,400 INFO L114 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 5 check-sat command(s) [2025-01-08 22:26:48,400 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-08 22:26:48,612 INFO L134 CoverageAnalysis]: Checked inductivity of 238 backedges. 15 proven. 34 refuted. 0 times theorem prover too weak. 189 trivial. 0 not checked. [2025-01-08 22:26:48,612 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-08 22:26:48,612 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1575375256] [2025-01-08 22:26:48,612 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1575375256] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-08 22:26:48,612 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1880788667] [2025-01-08 22:26:48,613 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2025-01-08 22:26:48,613 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-08 22:26:48,613 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-08 22:26:48,615 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 22:26:48,617 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 22:26:48,686 INFO L108 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE partitioned 83 statements into 5 equivalence classes. [2025-01-08 22:26:48,751 INFO L111 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 5 check-sat command(s) and asserted 83 of 83 statements. [2025-01-08 22:26:48,751 INFO L114 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 5 check-sat command(s) [2025-01-08 22:26:48,751 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-08 22:26:48,754 INFO L256 TraceCheckSpWp]: Trace formula consists of 439 conjuncts, 16 conjuncts are in the unsatisfiable core [2025-01-08 22:26:48,756 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-08 22:26:48,877 INFO L134 CoverageAnalysis]: Checked inductivity of 238 backedges. 21 proven. 28 refuted. 0 times theorem prover too weak. 189 trivial. 0 not checked. [2025-01-08 22:26:48,878 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-01-08 22:26:48,979 INFO L134 CoverageAnalysis]: Checked inductivity of 238 backedges. 21 proven. 28 refuted. 0 times theorem prover too weak. 189 trivial. 0 not checked. [2025-01-08 22:26:48,979 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1880788667] provided 0 perfect and 2 imperfect interpolant sequences [2025-01-08 22:26:48,979 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-01-08 22:26:48,979 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17, 17] total 26 [2025-01-08 22:26:48,979 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [623750223] [2025-01-08 22:26:48,980 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-01-08 22:26:48,980 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2025-01-08 22:26:48,980 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-08 22:26:48,980 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2025-01-08 22:26:48,980 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=165, Invalid=485, Unknown=0, NotChecked=0, Total=650 [2025-01-08 22:26:48,981 INFO L87 Difference]: Start difference. First operand 141 states and 160 transitions. Second operand has 26 states, 26 states have (on average 2.5384615384615383) internal successors, (66), 26 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-08 22:26:49,453 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-08 22:26:49,453 INFO L93 Difference]: Finished difference Result 215 states and 250 transitions. [2025-01-08 22:26:49,454 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2025-01-08 22:26:49,454 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 26 states have (on average 2.5384615384615383) internal successors, (66), 26 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 83 [2025-01-08 22:26:49,454 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-08 22:26:49,455 INFO L225 Difference]: With dead ends: 215 [2025-01-08 22:26:49,455 INFO L226 Difference]: Without dead ends: 156 [2025-01-08 22:26:49,455 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 189 GetRequests, 144 SyntacticMatches, 14 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 485 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=263, Invalid=793, Unknown=0, NotChecked=0, Total=1056 [2025-01-08 22:26:49,456 INFO L435 NwaCegarLoop]: 7 mSDtfsCounter, 3 mSDsluCounter, 12 mSDsCounter, 0 mSdLazyCounter, 881 mSolverCounterSat, 288 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 19 SdHoareTripleChecker+Invalid, 1169 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 288 IncrementalHoareTripleChecker+Valid, 881 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2025-01-08 22:26:49,456 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 19 Invalid, 1169 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [288 Valid, 881 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2025-01-08 22:26:49,456 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 156 states. [2025-01-08 22:26:49,492 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 156 to 142. [2025-01-08 22:26:49,493 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 142 states, 141 states have (on average 1.1347517730496455) internal successors, (160), 141 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 22:26:49,493 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 142 states to 142 states and 160 transitions. [2025-01-08 22:26:49,494 INFO L78 Accepts]: Start accepts. Automaton has 142 states and 160 transitions. Word has length 83 [2025-01-08 22:26:49,494 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-08 22:26:49,494 INFO L471 AbstractCegarLoop]: Abstraction has 142 states and 160 transitions. [2025-01-08 22:26:49,494 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 2.5384615384615383) internal successors, (66), 26 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-08 22:26:49,494 INFO L276 IsEmpty]: Start isEmpty. Operand 142 states and 160 transitions. [2025-01-08 22:26:49,495 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2025-01-08 22:26:49,495 INFO L210 NwaCegarLoop]: Found error trace [2025-01-08 22:26:49,495 INFO L218 NwaCegarLoop]: trace histogram [7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-08 22:26:49,504 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 22:26:49,695 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,19 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-08 22:26:49,696 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-01-08 22:26:49,696 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-08 22:26:49,696 INFO L85 PathProgramCache]: Analyzing trace with hash -554472604, now seen corresponding path program 19 times [2025-01-08 22:26:49,696 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-08 22:26:49,696 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [261221207] [2025-01-08 22:26:49,696 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2025-01-08 22:26:49,696 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-08 22:26:49,703 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 83 statements into 1 equivalence classes. [2025-01-08 22:26:49,712 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 83 of 83 statements. [2025-01-08 22:26:49,712 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-08 22:26:49,712 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-08 22:26:49,881 INFO L134 CoverageAnalysis]: Checked inductivity of 238 backedges. 22 proven. 27 refuted. 0 times theorem prover too weak. 189 trivial. 0 not checked. [2025-01-08 22:26:49,881 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-08 22:26:49,881 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [261221207] [2025-01-08 22:26:49,881 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [261221207] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-08 22:26:49,881 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1190062256] [2025-01-08 22:26:49,881 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2025-01-08 22:26:49,881 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-08 22:26:49,881 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-08 22:26:49,883 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 22:26:49,884 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 22:26:49,946 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 83 statements into 1 equivalence classes. [2025-01-08 22:26:49,999 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 83 of 83 statements. [2025-01-08 22:26:49,999 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-08 22:26:49,999 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-08 22:26:50,001 INFO L256 TraceCheckSpWp]: Trace formula consists of 439 conjuncts, 16 conjuncts are in the unsatisfiable core [2025-01-08 22:26:50,003 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-08 22:26:50,167 INFO L134 CoverageAnalysis]: Checked inductivity of 238 backedges. 28 proven. 21 refuted. 0 times theorem prover too weak. 189 trivial. 0 not checked. [2025-01-08 22:26:50,167 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-01-08 22:26:50,341 INFO L134 CoverageAnalysis]: Checked inductivity of 238 backedges. 28 proven. 21 refuted. 0 times theorem prover too weak. 189 trivial. 0 not checked. [2025-01-08 22:26:50,341 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1190062256] provided 0 perfect and 2 imperfect interpolant sequences [2025-01-08 22:26:50,341 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-01-08 22:26:50,341 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17, 17] total 26 [2025-01-08 22:26:50,342 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1364927895] [2025-01-08 22:26:50,342 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-01-08 22:26:50,342 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2025-01-08 22:26:50,342 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-08 22:26:50,342 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2025-01-08 22:26:50,343 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=157, Invalid=493, Unknown=0, NotChecked=0, Total=650 [2025-01-08 22:26:50,343 INFO L87 Difference]: Start difference. First operand 142 states and 160 transitions. Second operand has 26 states, 26 states have (on average 1.9230769230769231) internal successors, (50), 26 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-08 22:26:50,696 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-08 22:26:50,696 INFO L93 Difference]: Finished difference Result 289 states and 326 transitions. [2025-01-08 22:26:50,696 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2025-01-08 22:26:50,696 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 26 states have (on average 1.9230769230769231) internal successors, (50), 26 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 83 [2025-01-08 22:26:50,696 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-08 22:26:50,697 INFO L225 Difference]: With dead ends: 289 [2025-01-08 22:26:50,697 INFO L226 Difference]: Without dead ends: 143 [2025-01-08 22:26:50,698 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 181 GetRequests, 144 SyntacticMatches, 13 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 366 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=157, Invalid=493, Unknown=0, NotChecked=0, Total=650 [2025-01-08 22:26:50,698 INFO L435 NwaCegarLoop]: 6 mSDtfsCounter, 0 mSDsluCounter, 28 mSDsCounter, 0 mSdLazyCounter, 702 mSolverCounterSat, 136 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 34 SdHoareTripleChecker+Invalid, 838 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 136 IncrementalHoareTripleChecker+Valid, 702 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2025-01-08 22:26:50,698 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 34 Invalid, 838 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [136 Valid, 702 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2025-01-08 22:26:50,699 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 143 states. [2025-01-08 22:26:50,738 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 143 to 143. [2025-01-08 22:26:50,739 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 143 states, 142 states have (on average 1.1338028169014085) internal successors, (161), 142 states have internal predecessors, (161), 0 states have call successors, (0), 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 22:26:50,739 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 143 states to 143 states and 161 transitions. [2025-01-08 22:26:50,739 INFO L78 Accepts]: Start accepts. Automaton has 143 states and 161 transitions. Word has length 83 [2025-01-08 22:26:50,739 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-08 22:26:50,739 INFO L471 AbstractCegarLoop]: Abstraction has 143 states and 161 transitions. [2025-01-08 22:26:50,740 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 1.9230769230769231) internal successors, (50), 26 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-08 22:26:50,740 INFO L276 IsEmpty]: Start isEmpty. Operand 143 states and 161 transitions. [2025-01-08 22:26:50,740 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2025-01-08 22:26:50,740 INFO L210 NwaCegarLoop]: Found error trace [2025-01-08 22:26:50,740 INFO L218 NwaCegarLoop]: trace histogram [7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-08 22:26:50,749 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Ended with exit code 0 [2025-01-08 22:26:50,941 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,20 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-08 22:26:50,941 INFO L396 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-01-08 22:26:50,941 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-08 22:26:50,941 INFO L85 PathProgramCache]: Analyzing trace with hash -1412316055, now seen corresponding path program 20 times [2025-01-08 22:26:50,941 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-08 22:26:50,941 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [638484427] [2025-01-08 22:26:50,942 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-01-08 22:26:50,942 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-08 22:26:50,949 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 84 statements into 2 equivalence classes. [2025-01-08 22:26:50,956 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 84 of 84 statements. [2025-01-08 22:26:50,956 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-01-08 22:26:50,956 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-08 22:26:51,157 INFO L134 CoverageAnalysis]: Checked inductivity of 245 backedges. 15 proven. 34 refuted. 0 times theorem prover too weak. 196 trivial. 0 not checked. [2025-01-08 22:26:51,158 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-08 22:26:51,158 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [638484427] [2025-01-08 22:26:51,158 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [638484427] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-08 22:26:51,158 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [675668972] [2025-01-08 22:26:51,158 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-01-08 22:26:51,158 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-08 22:26:51,158 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-08 22:26:51,160 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 22:26:51,161 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 22:26:51,230 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 84 statements into 2 equivalence classes. [2025-01-08 22:26:51,272 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 84 of 84 statements. [2025-01-08 22:26:51,272 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-01-08 22:26:51,272 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-08 22:26:51,274 INFO L256 TraceCheckSpWp]: Trace formula consists of 448 conjuncts, 16 conjuncts are in the unsatisfiable core [2025-01-08 22:26:51,275 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-08 22:26:51,370 INFO L134 CoverageAnalysis]: Checked inductivity of 245 backedges. 21 proven. 28 refuted. 0 times theorem prover too weak. 196 trivial. 0 not checked. [2025-01-08 22:26:51,370 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-01-08 22:26:51,481 INFO L134 CoverageAnalysis]: Checked inductivity of 245 backedges. 21 proven. 28 refuted. 0 times theorem prover too weak. 196 trivial. 0 not checked. [2025-01-08 22:26:51,481 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [675668972] provided 0 perfect and 2 imperfect interpolant sequences [2025-01-08 22:26:51,481 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-01-08 22:26:51,481 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17, 17] total 26 [2025-01-08 22:26:51,481 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [719065363] [2025-01-08 22:26:51,481 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-01-08 22:26:51,482 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2025-01-08 22:26:51,482 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-08 22:26:51,482 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2025-01-08 22:26:51,482 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=163, Invalid=487, Unknown=0, NotChecked=0, Total=650 [2025-01-08 22:26:51,482 INFO L87 Difference]: Start difference. First operand 143 states and 161 transitions. Second operand has 26 states, 26 states have (on average 1.9230769230769231) internal successors, (50), 26 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-08 22:26:51,779 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-08 22:26:51,779 INFO L93 Difference]: Finished difference Result 211 states and 237 transitions. [2025-01-08 22:26:51,780 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2025-01-08 22:26:51,780 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 26 states have (on average 1.9230769230769231) internal successors, (50), 26 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 84 [2025-01-08 22:26:51,780 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-08 22:26:51,781 INFO L225 Difference]: With dead ends: 211 [2025-01-08 22:26:51,781 INFO L226 Difference]: Without dead ends: 94 [2025-01-08 22:26:51,782 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 184 GetRequests, 145 SyntacticMatches, 14 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 417 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=173, Invalid=529, Unknown=0, NotChecked=0, Total=702 [2025-01-08 22:26:51,783 INFO L435 NwaCegarLoop]: 5 mSDtfsCounter, 23 mSDsluCounter, 12 mSDsCounter, 0 mSdLazyCounter, 228 mSolverCounterSat, 261 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 23 SdHoareTripleChecker+Valid, 17 SdHoareTripleChecker+Invalid, 489 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 261 IncrementalHoareTripleChecker+Valid, 228 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2025-01-08 22:26:51,783 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [23 Valid, 17 Invalid, 489 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [261 Valid, 228 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2025-01-08 22:26:51,783 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 94 states. [2025-01-08 22:26:51,823 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 94 to 94. [2025-01-08 22:26:51,824 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 94 states, 93 states have (on average 1.118279569892473) internal successors, (104), 93 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-08 22:26:51,824 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 94 states to 94 states and 104 transitions. [2025-01-08 22:26:51,825 INFO L78 Accepts]: Start accepts. Automaton has 94 states and 104 transitions. Word has length 84 [2025-01-08 22:26:51,825 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-08 22:26:51,825 INFO L471 AbstractCegarLoop]: Abstraction has 94 states and 104 transitions. [2025-01-08 22:26:51,825 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 1.9230769230769231) internal successors, (50), 26 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-08 22:26:51,825 INFO L276 IsEmpty]: Start isEmpty. Operand 94 states and 104 transitions. [2025-01-08 22:26:51,826 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2025-01-08 22:26:51,826 INFO L210 NwaCegarLoop]: Found error trace [2025-01-08 22:26:51,826 INFO L218 NwaCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-08 22:26:51,834 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Forceful destruction successful, exit code 0 [2025-01-08 22:26:52,026 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21,21 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-08 22:26:52,027 INFO L396 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-01-08 22:26:52,027 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-08 22:26:52,027 INFO L85 PathProgramCache]: Analyzing trace with hash -871312774, now seen corresponding path program 21 times [2025-01-08 22:26:52,027 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-08 22:26:52,027 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [773619789] [2025-01-08 22:26:52,027 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-01-08 22:26:52,027 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-08 22:26:52,035 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 93 statements into 5 equivalence classes. [2025-01-08 22:26:52,122 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) and asserted 93 of 93 statements. [2025-01-08 22:26:52,122 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) [2025-01-08 22:26:52,122 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-08 22:27:02,474 INFO L134 CoverageAnalysis]: Checked inductivity of 308 backedges. 1 proven. 307 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-08 22:27:02,475 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-08 22:27:02,475 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [773619789] [2025-01-08 22:27:02,475 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [773619789] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-08 22:27:02,475 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [53252516] [2025-01-08 22:27:02,475 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-01-08 22:27:02,475 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-08 22:27:02,475 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-08 22:27:02,477 INFO L229 MonitoredProcess]: Starting monitored process 22 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-01-08 22:27:02,478 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process [2025-01-08 22:27:02,543 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 93 statements into 5 equivalence classes. [2025-01-08 22:27:02,667 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) and asserted 93 of 93 statements. [2025-01-08 22:27:02,667 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) [2025-01-08 22:27:02,667 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-08 22:27:02,673 WARN L254 TraceCheckSpWp]: Trace formula consists of 493 conjuncts, 319 conjuncts are in the unsatisfiable core [2025-01-08 22:27:02,678 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-08 22:27:02,806 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