./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/array-examples/standard_vararg_ground.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 551b0097 Calling Ultimate with: /root/.sdkman/candidates/java/21.0.5-tem/bin/java -Dosgi.configuration.area=/storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/array-examples/standard_vararg_ground.i -s /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 28ac72543f751666908cbd68a77fa11ffe4dd886016c3996df45b97bb42d5078 --- Real Ultimate output --- This is Ultimate 0.3.0-?-551b009-m [2025-01-08 22:11:09,634 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-01-08 22:11:09,685 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2025-01-08 22:11:09,688 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-01-08 22:11:09,689 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-01-08 22:11:09,702 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-01-08 22:11:09,702 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-01-08 22:11:09,702 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-01-08 22:11:09,702 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-01-08 22:11:09,702 INFO L153 SettingsManager]: * Use memory slicer=true [2025-01-08 22:11:09,702 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-01-08 22:11:09,703 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-01-08 22:11:09,703 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-01-08 22:11:09,703 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-01-08 22:11:09,703 INFO L153 SettingsManager]: * Use SBE=true [2025-01-08 22:11:09,703 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-01-08 22:11:09,703 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2025-01-08 22:11:09,703 INFO L153 SettingsManager]: * sizeof long=4 [2025-01-08 22:11:09,703 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-01-08 22:11:09,703 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-01-08 22:11:09,703 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-01-08 22:11:09,704 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2025-01-08 22:11:09,704 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-01-08 22:11:09,704 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2025-01-08 22:11:09,704 INFO L153 SettingsManager]: * sizeof long double=12 [2025-01-08 22:11:09,704 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2025-01-08 22:11:09,704 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-01-08 22:11:09,704 INFO L153 SettingsManager]: * Use constant arrays=true [2025-01-08 22:11:09,704 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-01-08 22:11:09,704 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-01-08 22:11:09,704 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-01-08 22:11:09,704 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-01-08 22:11:09,705 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-01-08 22:11:09,705 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2025-01-08 22:11:09,705 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-01-08 22:11:09,705 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-01-08 22:11:09,705 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-01-08 22:11:09,705 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-01-08 22:11:09,705 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-01-08 22:11:09,705 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-01-08 22:11:09,705 INFO L153 SettingsManager]: * Compute procedure contracts=false [2025-01-08 22:11:09,705 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2025-01-08 22:11:09,705 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-01-08 22:11:09,705 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2025-01-08 22:11:09,705 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2025-01-08 22:11:09,705 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-01-08 22:11:09,705 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-01-08 22:11:09,705 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-01-08 22:11:09,705 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 -> 28ac72543f751666908cbd68a77fa11ffe4dd886016c3996df45b97bb42d5078 [2025-01-08 22:11:09,899 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-01-08 22:11:09,903 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-01-08 22:11:09,905 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-01-08 22:11:09,905 INFO L270 PluginConnector]: Initializing CDTParser... [2025-01-08 22:11:09,906 INFO L274 PluginConnector]: CDTParser initialized [2025-01-08 22:11:09,906 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/array-examples/standard_vararg_ground.i [2025-01-08 22:11:11,055 INFO L533 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/87aa18bb7/c8d22fefe06945d7bfcf1d464a5153b3/FLAG481d5da7d [2025-01-08 22:11:11,284 INFO L384 CDTParser]: Found 1 translation units. [2025-01-08 22:11:11,286 INFO L180 CDTParser]: Scanning /storage/repos/ultimate-jdk21/releaseScripts/default/sv-benchmarks/c/array-examples/standard_vararg_ground.i [2025-01-08 22:11:11,302 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/87aa18bb7/c8d22fefe06945d7bfcf1d464a5153b3/FLAG481d5da7d [2025-01-08 22:11:11,614 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/87aa18bb7/c8d22fefe06945d7bfcf1d464a5153b3 [2025-01-08 22:11:11,616 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-01-08 22:11:11,616 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2025-01-08 22:11:11,617 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-01-08 22:11:11,617 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-01-08 22:11:11,620 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-01-08 22:11:11,621 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.01 10:11:11" (1/1) ... [2025-01-08 22:11:11,621 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4caea517 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.01 10:11:11, skipping insertion in model container [2025-01-08 22:11:11,621 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.01 10:11:11" (1/1) ... [2025-01-08 22:11:11,629 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-01-08 22:11:11,733 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate-jdk21/releaseScripts/default/sv-benchmarks/c/array-examples/standard_vararg_ground.i[815,828] [2025-01-08 22:11:11,740 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-01-08 22:11:11,745 INFO L200 MainTranslator]: Completed pre-run [2025-01-08 22:11:11,751 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate-jdk21/releaseScripts/default/sv-benchmarks/c/array-examples/standard_vararg_ground.i[815,828] [2025-01-08 22:11:11,753 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-01-08 22:11:11,761 INFO L204 MainTranslator]: Completed translation [2025-01-08 22:11:11,761 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.01 10:11:11 WrapperNode [2025-01-08 22:11:11,761 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-01-08 22:11:11,762 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-01-08 22:11:11,762 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-01-08 22:11:11,762 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-01-08 22:11:11,766 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.01 10:11:11" (1/1) ... [2025-01-08 22:11:11,769 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.01 10:11:11" (1/1) ... [2025-01-08 22:11:11,777 INFO L138 Inliner]: procedures = 16, calls = 13, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 49 [2025-01-08 22:11:11,777 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-01-08 22:11:11,777 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-01-08 22:11:11,777 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-01-08 22:11:11,777 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-01-08 22:11:11,782 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.01 10:11:11" (1/1) ... [2025-01-08 22:11:11,782 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.01 10:11:11" (1/1) ... [2025-01-08 22:11:11,782 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.01 10:11:11" (1/1) ... [2025-01-08 22:11:11,788 INFO L175 MemorySlicer]: Split 5 memory accesses to 2 slices as follows [2, 3]. 60 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 22:11:11,788 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.01 10:11:11" (1/1) ... [2025-01-08 22:11:11,788 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.01 10:11:11" (1/1) ... [2025-01-08 22:11:11,790 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.01 10:11:11" (1/1) ... [2025-01-08 22:11:11,791 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.01 10:11:11" (1/1) ... [2025-01-08 22:11:11,792 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.01 10:11:11" (1/1) ... [2025-01-08 22:11:11,793 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.01 10:11:11" (1/1) ... [2025-01-08 22:11:11,793 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.01 10:11:11" (1/1) ... [2025-01-08 22:11:11,794 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-01-08 22:11:11,794 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2025-01-08 22:11:11,794 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2025-01-08 22:11:11,794 INFO L274 PluginConnector]: RCFGBuilder initialized [2025-01-08 22:11:11,795 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.01 10:11:11" (1/1) ... [2025-01-08 22:11:11,798 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-01-08 22:11:11,805 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-08 22:11:11,813 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 22:11:11,819 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 22:11:11,832 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2025-01-08 22:11:11,832 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2025-01-08 22:11:11,833 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2025-01-08 22:11:11,833 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2025-01-08 22:11:11,833 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2025-01-08 22:11:11,833 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2025-01-08 22:11:11,833 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-01-08 22:11:11,833 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-01-08 22:11:11,833 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2025-01-08 22:11:11,833 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2025-01-08 22:11:11,833 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2025-01-08 22:11:11,872 INFO L234 CfgBuilder]: Building ICFG [2025-01-08 22:11:11,874 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2025-01-08 22:11:11,925 INFO L? ?]: Removed 8 outVars from TransFormulas that were not future-live. [2025-01-08 22:11:11,926 INFO L283 CfgBuilder]: Performing block encoding [2025-01-08 22:11:11,931 INFO L307 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-01-08 22:11:11,931 INFO L312 CfgBuilder]: Removed 1 assume(true) statements. [2025-01-08 22:11:11,931 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 08.01 10:11:11 BoogieIcfgContainer [2025-01-08 22:11:11,931 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2025-01-08 22:11:11,932 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2025-01-08 22:11:11,932 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2025-01-08 22:11:11,935 INFO L274 PluginConnector]: TraceAbstraction initialized [2025-01-08 22:11:11,936 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 08.01 10:11:11" (1/3) ... [2025-01-08 22:11:11,936 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3e4ea4f3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.01 10:11:11, skipping insertion in model container [2025-01-08 22:11:11,936 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.01 10:11:11" (2/3) ... [2025-01-08 22:11:11,936 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3e4ea4f3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.01 10:11:11, skipping insertion in model container [2025-01-08 22:11:11,936 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 08.01 10:11:11" (3/3) ... [2025-01-08 22:11:11,937 INFO L128 eAbstractionObserver]: Analyzing ICFG standard_vararg_ground.i [2025-01-08 22:11:11,946 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2025-01-08 22:11:11,947 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG standard_vararg_ground.i that has 1 procedures, 15 locations, 1 initial locations, 3 loop locations, and 1 error locations. [2025-01-08 22:11:11,973 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-01-08 22:11:11,979 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;@6bc9bbd, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-01-08 22:11:11,980 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2025-01-08 22:11:11,981 INFO L276 IsEmpty]: Start isEmpty. Operand has 15 states, 13 states have (on average 1.4615384615384615) internal successors, (19), 14 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-08 22:11:11,984 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2025-01-08 22:11:11,984 INFO L210 NwaCegarLoop]: Found error trace [2025-01-08 22:11:11,984 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2025-01-08 22:11:11,985 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-01-08 22:11:11,987 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-08 22:11:11,987 INFO L85 PathProgramCache]: Analyzing trace with hash 216692150, now seen corresponding path program 1 times [2025-01-08 22:11:11,992 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-08 22:11:11,992 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [581923699] [2025-01-08 22:11:11,992 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-08 22:11:11,992 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-08 22:11:12,037 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 8 statements into 1 equivalence classes. [2025-01-08 22:11:12,046 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 8 of 8 statements. [2025-01-08 22:11:12,046 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-08 22:11:12,046 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-08 22:11:12,097 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 22:11:12,097 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-08 22:11:12,098 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [581923699] [2025-01-08 22:11:12,098 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [581923699] provided 1 perfect and 0 imperfect interpolant sequences [2025-01-08 22:11:12,098 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-01-08 22:11:12,098 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-01-08 22:11:12,099 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [939147894] [2025-01-08 22:11:12,099 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-01-08 22:11:12,101 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-01-08 22:11:12,102 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-08 22:11:12,113 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-01-08 22:11:12,113 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-01-08 22:11:12,116 INFO L87 Difference]: Start difference. First operand has 15 states, 13 states have (on average 1.4615384615384615) internal successors, (19), 14 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-08 22:11:12,128 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-08 22:11:12,129 INFO L93 Difference]: Finished difference Result 28 states and 36 transitions. [2025-01-08 22:11:12,129 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-01-08 22:11:12,130 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8 [2025-01-08 22:11:12,130 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-08 22:11:12,133 INFO L225 Difference]: With dead ends: 28 [2025-01-08 22:11:12,134 INFO L226 Difference]: Without dead ends: 13 [2025-01-08 22:11:12,135 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 22:11:12,137 INFO L435 NwaCegarLoop]: 16 mSDtfsCounter, 0 mSDsluCounter, 13 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 29 SdHoareTripleChecker+Invalid, 4 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-01-08 22:11:12,137 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 29 Invalid, 4 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-01-08 22:11:12,145 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13 states. [2025-01-08 22:11:12,150 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13 to 13. [2025-01-08 22:11:12,151 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13 states, 12 states have (on average 1.25) internal successors, (15), 12 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-08 22:11:12,153 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 15 transitions. [2025-01-08 22:11:12,154 INFO L78 Accepts]: Start accepts. Automaton has 13 states and 15 transitions. Word has length 8 [2025-01-08 22:11:12,154 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-08 22:11:12,156 INFO L471 AbstractCegarLoop]: Abstraction has 13 states and 15 transitions. [2025-01-08 22:11:12,156 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-08 22:11:12,157 INFO L276 IsEmpty]: Start isEmpty. Operand 13 states and 15 transitions. [2025-01-08 22:11:12,157 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2025-01-08 22:11:12,157 INFO L210 NwaCegarLoop]: Found error trace [2025-01-08 22:11:12,157 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-08 22:11:12,157 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2025-01-08 22:11:12,157 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-01-08 22:11:12,158 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-08 22:11:12,158 INFO L85 PathProgramCache]: Analyzing trace with hash -379908944, now seen corresponding path program 1 times [2025-01-08 22:11:12,158 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-08 22:11:12,158 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1617771722] [2025-01-08 22:11:12,158 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-08 22:11:12,158 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-08 22:11:12,172 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 10 statements into 1 equivalence classes. [2025-01-08 22:11:12,183 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 10 of 10 statements. [2025-01-08 22:11:12,183 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-08 22:11:12,183 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-08 22:11:12,264 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-08 22:11:12,264 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-08 22:11:12,265 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1617771722] [2025-01-08 22:11:12,265 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1617771722] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-08 22:11:12,265 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [134921608] [2025-01-08 22:11:12,265 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-08 22:11:12,265 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-08 22:11:12,265 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-08 22:11:12,267 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 22:11:12,269 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 22:11:12,307 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 10 statements into 1 equivalence classes. [2025-01-08 22:11:12,321 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 10 of 10 statements. [2025-01-08 22:11:12,321 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-08 22:11:12,321 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-08 22:11:12,326 INFO L256 TraceCheckSpWp]: Trace formula consists of 58 conjuncts, 3 conjuncts are in the unsatisfiable core [2025-01-08 22:11:12,329 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-08 22:11:12,358 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-08 22:11:12,360 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-01-08 22:11:12,381 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-08 22:11:12,382 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [134921608] provided 0 perfect and 2 imperfect interpolant sequences [2025-01-08 22:11:12,382 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-01-08 22:11:12,383 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 7 [2025-01-08 22:11:12,383 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1646912291] [2025-01-08 22:11:12,383 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-01-08 22:11:12,383 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2025-01-08 22:11:12,383 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-08 22:11:12,384 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2025-01-08 22:11:12,384 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2025-01-08 22:11:12,384 INFO L87 Difference]: Start difference. First operand 13 states and 15 transitions. Second operand has 7 states, 7 states have (on average 2.142857142857143) internal successors, (15), 7 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-08 22:11:12,403 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-08 22:11:12,403 INFO L93 Difference]: Finished difference Result 25 states and 31 transitions. [2025-01-08 22:11:12,404 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-01-08 22:11:12,404 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 2.142857142857143) internal successors, (15), 7 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 10 [2025-01-08 22:11:12,404 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-08 22:11:12,404 INFO L225 Difference]: With dead ends: 25 [2025-01-08 22:11:12,405 INFO L226 Difference]: Without dead ends: 16 [2025-01-08 22:11:12,405 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2025-01-08 22:11:12,406 INFO L435 NwaCegarLoop]: 13 mSDtfsCounter, 0 mSDsluCounter, 33 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 46 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-01-08 22:11:12,406 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 46 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-01-08 22:11:12,407 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16 states. [2025-01-08 22:11:12,410 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16 to 16. [2025-01-08 22:11:12,410 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16 states, 15 states have (on average 1.2) internal successors, (18), 15 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-08 22:11:12,410 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 18 transitions. [2025-01-08 22:11:12,411 INFO L78 Accepts]: Start accepts. Automaton has 16 states and 18 transitions. Word has length 10 [2025-01-08 22:11:12,411 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-08 22:11:12,411 INFO L471 AbstractCegarLoop]: Abstraction has 16 states and 18 transitions. [2025-01-08 22:11:12,411 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 2.142857142857143) internal successors, (15), 7 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-08 22:11:12,411 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states and 18 transitions. [2025-01-08 22:11:12,411 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2025-01-08 22:11:12,411 INFO L210 NwaCegarLoop]: Found error trace [2025-01-08 22:11:12,411 INFO L218 NwaCegarLoop]: trace histogram [4, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-08 22:11:12,418 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2025-01-08 22:11:12,612 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-08 22:11:12,612 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-01-08 22:11:12,613 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-08 22:11:12,613 INFO L85 PathProgramCache]: Analyzing trace with hash -841088624, now seen corresponding path program 2 times [2025-01-08 22:11:12,613 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-08 22:11:12,613 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1884448781] [2025-01-08 22:11:12,613 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-01-08 22:11:12,613 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-08 22:11:12,622 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 13 statements into 2 equivalence classes. [2025-01-08 22:11:12,625 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) and asserted 9 of 13 statements. [2025-01-08 22:11:12,625 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2025-01-08 22:11:12,625 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-08 22:11:12,661 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2025-01-08 22:11:12,661 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-08 22:11:12,661 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1884448781] [2025-01-08 22:11:12,662 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1884448781] provided 1 perfect and 0 imperfect interpolant sequences [2025-01-08 22:11:12,662 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-01-08 22:11:12,662 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-01-08 22:11:12,662 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1190398478] [2025-01-08 22:11:12,662 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-01-08 22:11:12,662 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-01-08 22:11:12,662 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-08 22:11:12,663 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-01-08 22:11:12,663 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2025-01-08 22:11:12,663 INFO L87 Difference]: Start difference. First operand 16 states and 18 transitions. Second operand has 4 states, 4 states have (on average 2.5) internal successors, (10), 4 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-08 22:11:12,677 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-08 22:11:12,677 INFO L93 Difference]: Finished difference Result 26 states and 29 transitions. [2025-01-08 22:11:12,678 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-01-08 22:11:12,678 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 2.5) internal successors, (10), 4 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 13 [2025-01-08 22:11:12,678 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-08 22:11:12,678 INFO L225 Difference]: With dead ends: 26 [2025-01-08 22:11:12,678 INFO L226 Difference]: Without dead ends: 19 [2025-01-08 22:11:12,678 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 22:11:12,679 INFO L435 NwaCegarLoop]: 12 mSDtfsCounter, 1 mSDsluCounter, 12 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 24 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-01-08 22:11:12,679 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 24 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-01-08 22:11:12,679 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19 states. [2025-01-08 22:11:12,681 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19 to 18. [2025-01-08 22:11:12,681 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18 states, 17 states have (on average 1.1764705882352942) internal successors, (20), 17 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-08 22:11:12,682 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 20 transitions. [2025-01-08 22:11:12,682 INFO L78 Accepts]: Start accepts. Automaton has 18 states and 20 transitions. Word has length 13 [2025-01-08 22:11:12,682 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-08 22:11:12,682 INFO L471 AbstractCegarLoop]: Abstraction has 18 states and 20 transitions. [2025-01-08 22:11:12,682 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 2.5) internal successors, (10), 4 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-08 22:11:12,682 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 20 transitions. [2025-01-08 22:11:12,682 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2025-01-08 22:11:12,683 INFO L210 NwaCegarLoop]: Found error trace [2025-01-08 22:11:12,683 INFO L218 NwaCegarLoop]: trace histogram [4, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-08 22:11:12,683 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2025-01-08 22:11:12,683 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-01-08 22:11:12,683 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-08 22:11:12,683 INFO L85 PathProgramCache]: Analyzing trace with hash 1080622230, now seen corresponding path program 1 times [2025-01-08 22:11:12,683 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-08 22:11:12,683 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1780071420] [2025-01-08 22:11:12,683 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-08 22:11:12,684 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-08 22:11:12,694 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 16 statements into 1 equivalence classes. [2025-01-08 22:11:12,714 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 16 of 16 statements. [2025-01-08 22:11:12,714 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-08 22:11:12,714 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-08 22:11:12,848 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2025-01-08 22:11:12,848 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-08 22:11:12,848 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1780071420] [2025-01-08 22:11:12,849 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1780071420] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-08 22:11:12,849 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [925421734] [2025-01-08 22:11:12,849 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-08 22:11:12,849 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-08 22:11:12,849 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-08 22:11:12,855 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 22:11:12,856 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 22:11:12,889 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 16 statements into 1 equivalence classes. [2025-01-08 22:11:12,901 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 16 of 16 statements. [2025-01-08 22:11:12,901 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-08 22:11:12,901 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-08 22:11:12,902 INFO L256 TraceCheckSpWp]: Trace formula consists of 90 conjuncts, 6 conjuncts are in the unsatisfiable core [2025-01-08 22:11:12,903 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-08 22:11:12,915 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2025-01-08 22:11:12,915 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-01-08 22:11:12,972 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2025-01-08 22:11:12,972 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [925421734] provided 0 perfect and 2 imperfect interpolant sequences [2025-01-08 22:11:12,972 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-01-08 22:11:12,972 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 13 [2025-01-08 22:11:12,972 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [868398989] [2025-01-08 22:11:12,972 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-01-08 22:11:12,973 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2025-01-08 22:11:12,973 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-08 22:11:12,973 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2025-01-08 22:11:12,973 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=78, Unknown=0, NotChecked=0, Total=156 [2025-01-08 22:11:12,974 INFO L87 Difference]: Start difference. First operand 18 states and 20 transitions. Second operand has 13 states, 13 states have (on average 1.7692307692307692) internal successors, (23), 13 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-08 22:11:12,990 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-08 22:11:12,990 INFO L93 Difference]: Finished difference Result 35 states and 44 transitions. [2025-01-08 22:11:12,990 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2025-01-08 22:11:12,991 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 1.7692307692307692) internal successors, (23), 13 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 16 [2025-01-08 22:11:12,991 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-08 22:11:12,991 INFO L225 Difference]: With dead ends: 35 [2025-01-08 22:11:12,991 INFO L226 Difference]: Without dead ends: 24 [2025-01-08 22:11:12,991 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=78, Invalid=78, Unknown=0, NotChecked=0, Total=156 [2025-01-08 22:11:12,992 INFO L435 NwaCegarLoop]: 13 mSDtfsCounter, 0 mSDsluCounter, 55 mSDsCounter, 0 mSdLazyCounter, 17 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 68 SdHoareTripleChecker+Invalid, 18 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 17 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-01-08 22:11:12,992 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 68 Invalid, 18 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 17 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-01-08 22:11:12,992 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24 states. [2025-01-08 22:11:12,994 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24 to 24. [2025-01-08 22:11:12,995 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24 states, 23 states have (on average 1.1304347826086956) internal successors, (26), 23 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-08 22:11:12,995 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 26 transitions. [2025-01-08 22:11:12,995 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 26 transitions. Word has length 16 [2025-01-08 22:11:12,995 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-08 22:11:12,995 INFO L471 AbstractCegarLoop]: Abstraction has 24 states and 26 transitions. [2025-01-08 22:11:12,995 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 1.7692307692307692) internal successors, (23), 13 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-08 22:11:12,996 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 26 transitions. [2025-01-08 22:11:12,996 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2025-01-08 22:11:12,996 INFO L210 NwaCegarLoop]: Found error trace [2025-01-08 22:11:12,996 INFO L218 NwaCegarLoop]: trace histogram [10, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-08 22:11:13,005 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 22:11:13,200 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 22:11:13,200 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-01-08 22:11:13,201 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-08 22:11:13,201 INFO L85 PathProgramCache]: Analyzing trace with hash -1020571498, now seen corresponding path program 2 times [2025-01-08 22:11:13,201 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-08 22:11:13,202 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [901566609] [2025-01-08 22:11:13,202 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-01-08 22:11:13,202 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-08 22:11:13,219 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 22 statements into 2 equivalence classes. [2025-01-08 22:11:13,230 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 22 of 22 statements. [2025-01-08 22:11:13,230 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-01-08 22:11:13,230 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-08 22:11:13,404 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2025-01-08 22:11:13,405 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-08 22:11:13,405 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [901566609] [2025-01-08 22:11:13,405 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [901566609] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-08 22:11:13,405 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [553257686] [2025-01-08 22:11:13,405 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-01-08 22:11:13,405 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-08 22:11:13,405 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-08 22:11:13,407 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 22:11:13,408 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 22:11:13,448 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 22 statements into 2 equivalence classes. [2025-01-08 22:11:13,470 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 22 of 22 statements. [2025-01-08 22:11:13,470 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-01-08 22:11:13,470 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-08 22:11:13,471 INFO L256 TraceCheckSpWp]: Trace formula consists of 144 conjuncts, 12 conjuncts are in the unsatisfiable core [2025-01-08 22:11:13,472 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-08 22:11:13,506 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2025-01-08 22:11:13,507 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-01-08 22:11:13,707 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2025-01-08 22:11:13,710 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [553257686] provided 0 perfect and 2 imperfect interpolant sequences [2025-01-08 22:11:13,710 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-01-08 22:11:13,710 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13, 13] total 25 [2025-01-08 22:11:13,710 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [489294340] [2025-01-08 22:11:13,710 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-01-08 22:11:13,710 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2025-01-08 22:11:13,710 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-08 22:11:13,711 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2025-01-08 22:11:13,711 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=300, Invalid=300, Unknown=0, NotChecked=0, Total=600 [2025-01-08 22:11:13,711 INFO L87 Difference]: Start difference. First operand 24 states and 26 transitions. Second operand has 25 states, 25 states have (on average 1.4) internal successors, (35), 25 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-08 22:11:13,741 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-08 22:11:13,742 INFO L93 Difference]: Finished difference Result 47 states and 62 transitions. [2025-01-08 22:11:13,742 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2025-01-08 22:11:13,742 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 1.4) internal successors, (35), 25 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2025-01-08 22:11:13,743 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-08 22:11:13,743 INFO L225 Difference]: With dead ends: 47 [2025-01-08 22:11:13,743 INFO L226 Difference]: Without dead ends: 36 [2025-01-08 22:11:13,743 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 40 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=300, Invalid=300, Unknown=0, NotChecked=0, Total=600 [2025-01-08 22:11:13,744 INFO L435 NwaCegarLoop]: 13 mSDtfsCounter, 0 mSDsluCounter, 22 mSDsCounter, 0 mSdLazyCounter, 25 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 35 SdHoareTripleChecker+Invalid, 26 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 25 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-01-08 22:11:13,745 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 35 Invalid, 26 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 25 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-01-08 22:11:13,745 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2025-01-08 22:11:13,749 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 36. [2025-01-08 22:11:13,751 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 36 states, 35 states have (on average 1.0857142857142856) internal successors, (38), 35 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 22:11:13,751 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 38 transitions. [2025-01-08 22:11:13,751 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 38 transitions. Word has length 22 [2025-01-08 22:11:13,751 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-08 22:11:13,751 INFO L471 AbstractCegarLoop]: Abstraction has 36 states and 38 transitions. [2025-01-08 22:11:13,751 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 1.4) internal successors, (35), 25 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-08 22:11:13,751 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 38 transitions. [2025-01-08 22:11:13,752 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2025-01-08 22:11:13,752 INFO L210 NwaCegarLoop]: Found error trace [2025-01-08 22:11:13,752 INFO L218 NwaCegarLoop]: trace histogram [22, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-08 22:11:13,760 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2025-01-08 22:11:13,956 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 22:11:13,956 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-01-08 22:11:13,956 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-08 22:11:13,957 INFO L85 PathProgramCache]: Analyzing trace with hash -1513949034, now seen corresponding path program 3 times [2025-01-08 22:11:13,957 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-08 22:11:13,957 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1082740160] [2025-01-08 22:11:13,957 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-01-08 22:11:13,957 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-08 22:11:13,970 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 34 statements into 12 equivalence classes. [2025-01-08 22:11:13,974 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) and asserted 14 of 34 statements. [2025-01-08 22:11:13,975 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2025-01-08 22:11:13,975 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-08 22:11:14,099 INFO L134 CoverageAnalysis]: Checked inductivity of 255 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 253 trivial. 0 not checked. [2025-01-08 22:11:14,100 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-08 22:11:14,100 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1082740160] [2025-01-08 22:11:14,100 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1082740160] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-08 22:11:14,100 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [853337299] [2025-01-08 22:11:14,100 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-01-08 22:11:14,100 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-08 22:11:14,100 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-08 22:11:14,102 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 22:11:14,106 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 22:11:14,147 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 34 statements into 12 equivalence classes. [2025-01-08 22:11:14,155 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) and asserted 14 of 34 statements. [2025-01-08 22:11:14,155 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2025-01-08 22:11:14,155 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-08 22:11:14,156 INFO L256 TraceCheckSpWp]: Trace formula consists of 72 conjuncts, 12 conjuncts are in the unsatisfiable core [2025-01-08 22:11:14,157 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-08 22:11:14,278 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2025-01-08 22:11:14,288 INFO L134 CoverageAnalysis]: Checked inductivity of 255 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 253 trivial. 0 not checked. [2025-01-08 22:11:14,288 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-01-08 22:11:14,341 INFO L349 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2025-01-08 22:11:14,342 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 21 treesize of output 12 [2025-01-08 22:11:14,372 INFO L134 CoverageAnalysis]: Checked inductivity of 255 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 253 trivial. 0 not checked. [2025-01-08 22:11:14,373 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [853337299] provided 0 perfect and 2 imperfect interpolant sequences [2025-01-08 22:11:14,373 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-01-08 22:11:14,373 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 7, 7] total 14 [2025-01-08 22:11:14,373 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1901750492] [2025-01-08 22:11:14,373 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-01-08 22:11:14,373 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2025-01-08 22:11:14,373 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-08 22:11:14,374 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2025-01-08 22:11:14,374 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=138, Unknown=0, NotChecked=0, Total=182 [2025-01-08 22:11:14,374 INFO L87 Difference]: Start difference. First operand 36 states and 38 transitions. Second operand has 14 states, 14 states have (on average 2.0) internal successors, (28), 14 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 22:11:14,416 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-08 22:11:14,416 INFO L93 Difference]: Finished difference Result 42 states and 44 transitions. [2025-01-08 22:11:14,417 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2025-01-08 22:11:14,417 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 2.0) internal successors, (28), 14 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) Word has length 34 [2025-01-08 22:11:14,417 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-08 22:11:14,417 INFO L225 Difference]: With dead ends: 42 [2025-01-08 22:11:14,417 INFO L226 Difference]: Without dead ends: 40 [2025-01-08 22:11:14,418 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 75 GetRequests, 61 SyntacticMatches, 1 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 51 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=53, Invalid=157, Unknown=0, NotChecked=0, Total=210 [2025-01-08 22:11:14,418 INFO L435 NwaCegarLoop]: 8 mSDtfsCounter, 17 mSDsluCounter, 42 mSDsCounter, 0 mSdLazyCounter, 62 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 17 SdHoareTripleChecker+Valid, 50 SdHoareTripleChecker+Invalid, 62 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 62 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-01-08 22:11:14,418 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [17 Valid, 50 Invalid, 62 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 62 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-01-08 22:11:14,419 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40 states. [2025-01-08 22:11:14,422 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40 to 38. [2025-01-08 22:11:14,422 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 38 states, 37 states have (on average 1.0810810810810811) internal successors, (40), 37 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 22:11:14,422 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 40 transitions. [2025-01-08 22:11:14,422 INFO L78 Accepts]: Start accepts. Automaton has 38 states and 40 transitions. Word has length 34 [2025-01-08 22:11:14,422 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-08 22:11:14,422 INFO L471 AbstractCegarLoop]: Abstraction has 38 states and 40 transitions. [2025-01-08 22:11:14,422 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 2.0) internal successors, (28), 14 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 22:11:14,423 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 40 transitions. [2025-01-08 22:11:14,423 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2025-01-08 22:11:14,423 INFO L210 NwaCegarLoop]: Found error trace [2025-01-08 22:11:14,423 INFO L218 NwaCegarLoop]: trace histogram [22, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-08 22:11:14,429 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2025-01-08 22:11:14,623 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 22:11:14,624 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-01-08 22:11:14,624 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-08 22:11:14,624 INFO L85 PathProgramCache]: Analyzing trace with hash -599303129, now seen corresponding path program 1 times [2025-01-08 22:11:14,624 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-08 22:11:14,624 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [684483838] [2025-01-08 22:11:14,625 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-08 22:11:14,625 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-08 22:11:14,636 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 37 statements into 1 equivalence classes. [2025-01-08 22:11:14,649 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 37 of 37 statements. [2025-01-08 22:11:14,649 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-08 22:11:14,649 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-08 22:11:15,048 INFO L134 CoverageAnalysis]: Checked inductivity of 257 backedges. 0 proven. 253 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2025-01-08 22:11:15,048 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-08 22:11:15,048 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [684483838] [2025-01-08 22:11:15,048 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [684483838] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-08 22:11:15,048 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1057277969] [2025-01-08 22:11:15,052 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-08 22:11:15,052 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-08 22:11:15,053 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-08 22:11:15,054 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 22:11:15,055 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 22:11:15,114 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 37 statements into 1 equivalence classes. [2025-01-08 22:11:15,140 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 37 of 37 statements. [2025-01-08 22:11:15,141 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-08 22:11:15,141 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-08 22:11:15,141 INFO L256 TraceCheckSpWp]: Trace formula consists of 262 conjuncts, 24 conjuncts are in the unsatisfiable core [2025-01-08 22:11:15,143 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-08 22:11:15,204 INFO L134 CoverageAnalysis]: Checked inductivity of 257 backedges. 0 proven. 253 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2025-01-08 22:11:15,206 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-01-08 22:11:15,853 INFO L134 CoverageAnalysis]: Checked inductivity of 257 backedges. 0 proven. 253 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2025-01-08 22:11:15,853 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1057277969] provided 0 perfect and 2 imperfect interpolant sequences [2025-01-08 22:11:15,853 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-01-08 22:11:15,854 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 25, 25] total 49 [2025-01-08 22:11:15,854 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2006224822] [2025-01-08 22:11:15,854 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-01-08 22:11:15,855 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 49 states [2025-01-08 22:11:15,855 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-08 22:11:15,856 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 49 interpolants. [2025-01-08 22:11:15,859 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=1176, Invalid=1176, Unknown=0, NotChecked=0, Total=2352 [2025-01-08 22:11:15,859 INFO L87 Difference]: Start difference. First operand 38 states and 40 transitions. Second operand has 49 states, 49 states have (on average 1.2448979591836735) internal successors, (61), 49 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-08 22:11:15,912 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-08 22:11:15,913 INFO L93 Difference]: Finished difference Result 75 states and 102 transitions. [2025-01-08 22:11:15,914 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2025-01-08 22:11:15,914 INFO L78 Accepts]: Start accepts. Automaton has has 49 states, 49 states have (on average 1.2448979591836735) internal successors, (61), 49 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 37 [2025-01-08 22:11:15,914 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-08 22:11:15,914 INFO L225 Difference]: With dead ends: 75 [2025-01-08 22:11:15,915 INFO L226 Difference]: Without dead ends: 62 [2025-01-08 22:11:15,916 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 97 GetRequests, 50 SyntacticMatches, 0 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 88 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=1176, Invalid=1176, Unknown=0, NotChecked=0, Total=2352 [2025-01-08 22:11:15,917 INFO L435 NwaCegarLoop]: 13 mSDtfsCounter, 0 mSDsluCounter, 77 mSDsCounter, 0 mSdLazyCounter, 54 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 90 SdHoareTripleChecker+Invalid, 55 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 54 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-01-08 22:11:15,918 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 90 Invalid, 55 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 54 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-01-08 22:11:15,918 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 62 states. [2025-01-08 22:11:15,927 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 62 to 62. [2025-01-08 22:11:15,927 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 62 states, 61 states have (on average 1.0491803278688525) internal successors, (64), 61 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-08 22:11:15,928 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 62 states to 62 states and 64 transitions. [2025-01-08 22:11:15,928 INFO L78 Accepts]: Start accepts. Automaton has 62 states and 64 transitions. Word has length 37 [2025-01-08 22:11:15,928 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-08 22:11:15,928 INFO L471 AbstractCegarLoop]: Abstraction has 62 states and 64 transitions. [2025-01-08 22:11:15,929 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 49 states, 49 states have (on average 1.2448979591836735) internal successors, (61), 49 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-08 22:11:15,929 INFO L276 IsEmpty]: Start isEmpty. Operand 62 states and 64 transitions. [2025-01-08 22:11:15,930 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2025-01-08 22:11:15,930 INFO L210 NwaCegarLoop]: Found error trace [2025-01-08 22:11:15,930 INFO L218 NwaCegarLoop]: trace histogram [46, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-08 22:11:15,938 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 22:11:16,134 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 22:11:16,135 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-01-08 22:11:16,136 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-08 22:11:16,136 INFO L85 PathProgramCache]: Analyzing trace with hash -1236661209, now seen corresponding path program 2 times [2025-01-08 22:11:16,136 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-08 22:11:16,136 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [865944148] [2025-01-08 22:11:16,136 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-01-08 22:11:16,136 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-08 22:11:16,157 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 61 statements into 2 equivalence classes. [2025-01-08 22:11:16,184 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 61 of 61 statements. [2025-01-08 22:11:16,184 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-01-08 22:11:16,184 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-08 22:11:17,468 INFO L134 CoverageAnalysis]: Checked inductivity of 1085 backedges. 0 proven. 1081 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2025-01-08 22:11:17,468 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-08 22:11:17,468 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [865944148] [2025-01-08 22:11:17,468 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [865944148] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-08 22:11:17,468 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1520097614] [2025-01-08 22:11:17,468 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-01-08 22:11:17,469 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-08 22:11:17,469 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-08 22:11:17,470 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 22:11:17,473 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 22:11:17,540 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 61 statements into 2 equivalence classes. [2025-01-08 22:11:17,581 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 61 of 61 statements. [2025-01-08 22:11:17,581 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-01-08 22:11:17,581 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-08 22:11:17,586 INFO L256 TraceCheckSpWp]: Trace formula consists of 478 conjuncts, 48 conjuncts are in the unsatisfiable core [2025-01-08 22:11:17,589 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-08 22:11:17,657 INFO L134 CoverageAnalysis]: Checked inductivity of 1085 backedges. 0 proven. 1081 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2025-01-08 22:11:17,657 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-01-08 22:11:19,566 INFO L134 CoverageAnalysis]: Checked inductivity of 1085 backedges. 0 proven. 1081 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2025-01-08 22:11:19,566 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1520097614] provided 0 perfect and 2 imperfect interpolant sequences [2025-01-08 22:11:19,566 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-01-08 22:11:19,566 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [49, 49, 49] total 97 [2025-01-08 22:11:19,566 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1239676119] [2025-01-08 22:11:19,567 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-01-08 22:11:19,567 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 97 states [2025-01-08 22:11:19,567 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-08 22:11:19,568 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 97 interpolants. [2025-01-08 22:11:19,576 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=4656, Invalid=4656, Unknown=0, NotChecked=0, Total=9312 [2025-01-08 22:11:19,576 INFO L87 Difference]: Start difference. First operand 62 states and 64 transitions. Second operand has 97 states, 97 states have (on average 1.1237113402061856) internal successors, (109), 97 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-08 22:11:19,668 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-08 22:11:19,669 INFO L93 Difference]: Finished difference Result 123 states and 174 transitions. [2025-01-08 22:11:19,669 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 96 states. [2025-01-08 22:11:19,669 INFO L78 Accepts]: Start accepts. Automaton has has 97 states, 97 states have (on average 1.1237113402061856) internal successors, (109), 97 states have internal predecessors, (109), 0 states have call successors, (0), 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 22:11:19,670 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-08 22:11:19,671 INFO L225 Difference]: With dead ends: 123 [2025-01-08 22:11:19,671 INFO L226 Difference]: Without dead ends: 110 [2025-01-08 22:11:19,673 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 169 GetRequests, 74 SyntacticMatches, 0 SemanticMatches, 95 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 184 ImplicationChecksByTransitivity, 2.5s TimeCoverageRelationStatistics Valid=4656, Invalid=4656, Unknown=0, NotChecked=0, Total=9312 [2025-01-08 22:11:19,673 INFO L435 NwaCegarLoop]: 13 mSDtfsCounter, 0 mSDsluCounter, 66 mSDsCounter, 0 mSdLazyCounter, 101 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 79 SdHoareTripleChecker+Invalid, 102 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 101 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-01-08 22:11:19,675 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 79 Invalid, 102 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 101 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-01-08 22:11:19,675 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 110 states. [2025-01-08 22:11:19,685 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 110 to 110. [2025-01-08 22:11:19,686 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 110 states, 109 states have (on average 1.0275229357798166) internal successors, (112), 109 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-08 22:11:19,688 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 110 states to 110 states and 112 transitions. [2025-01-08 22:11:19,688 INFO L78 Accepts]: Start accepts. Automaton has 110 states and 112 transitions. Word has length 61 [2025-01-08 22:11:19,689 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-08 22:11:19,689 INFO L471 AbstractCegarLoop]: Abstraction has 110 states and 112 transitions. [2025-01-08 22:11:19,689 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 97 states, 97 states have (on average 1.1237113402061856) internal successors, (109), 97 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-08 22:11:19,689 INFO L276 IsEmpty]: Start isEmpty. Operand 110 states and 112 transitions. [2025-01-08 22:11:19,690 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2025-01-08 22:11:19,690 INFO L210 NwaCegarLoop]: Found error trace [2025-01-08 22:11:19,691 INFO L218 NwaCegarLoop]: trace histogram [94, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-08 22:11:19,698 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2025-01-08 22:11:19,895 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 22:11:19,895 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-01-08 22:11:19,895 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-08 22:11:19,896 INFO L85 PathProgramCache]: Analyzing trace with hash 119499815, now seen corresponding path program 3 times [2025-01-08 22:11:19,896 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-08 22:11:19,896 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2040921127] [2025-01-08 22:11:19,896 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-01-08 22:11:19,896 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-08 22:11:19,953 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 109 statements into 48 equivalence classes. [2025-01-08 22:11:19,956 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) and asserted 17 of 109 statements. [2025-01-08 22:11:19,957 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2025-01-08 22:11:19,957 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-08 22:11:19,990 INFO L134 CoverageAnalysis]: Checked inductivity of 4469 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 4465 trivial. 0 not checked. [2025-01-08 22:11:19,990 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-08 22:11:19,991 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2040921127] [2025-01-08 22:11:19,991 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2040921127] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-08 22:11:19,991 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1821523656] [2025-01-08 22:11:19,991 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-01-08 22:11:19,991 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-08 22:11:19,991 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-08 22:11:19,992 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 22:11:19,996 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 22:11:20,106 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 109 statements into 48 equivalence classes. [2025-01-08 22:11:20,115 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) and asserted 17 of 109 statements. [2025-01-08 22:11:20,115 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2025-01-08 22:11:20,115 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-08 22:11:20,116 INFO L256 TraceCheckSpWp]: Trace formula consists of 82 conjuncts, 5 conjuncts are in the unsatisfiable core [2025-01-08 22:11:20,119 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-08 22:11:20,255 INFO L134 CoverageAnalysis]: Checked inductivity of 4469 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 4465 trivial. 0 not checked. [2025-01-08 22:11:20,255 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-01-08 22:11:20,390 INFO L134 CoverageAnalysis]: Checked inductivity of 4469 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 4465 trivial. 0 not checked. [2025-01-08 22:11:20,391 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1821523656] provided 0 perfect and 2 imperfect interpolant sequences [2025-01-08 22:11:20,391 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-01-08 22:11:20,391 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 10 [2025-01-08 22:11:20,391 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1590192376] [2025-01-08 22:11:20,391 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-01-08 22:11:20,391 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2025-01-08 22:11:20,391 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-08 22:11:20,391 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2025-01-08 22:11:20,392 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2025-01-08 22:11:20,392 INFO L87 Difference]: Start difference. First operand 110 states and 112 transitions. Second operand has 10 states, 10 states have (on average 3.1) internal successors, (31), 10 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-08 22:11:20,437 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-08 22:11:20,437 INFO L93 Difference]: Finished difference Result 124 states and 127 transitions. [2025-01-08 22:11:20,440 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-01-08 22:11:20,441 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 3.1) internal successors, (31), 10 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 109 [2025-01-08 22:11:20,441 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-08 22:11:20,442 INFO L225 Difference]: With dead ends: 124 [2025-01-08 22:11:20,442 INFO L226 Difference]: Without dead ends: 114 [2025-01-08 22:11:20,442 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 222 GetRequests, 212 SyntacticMatches, 2 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2025-01-08 22:11:20,442 INFO L435 NwaCegarLoop]: 10 mSDtfsCounter, 1 mSDsluCounter, 40 mSDsCounter, 0 mSdLazyCounter, 33 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 50 SdHoareTripleChecker+Invalid, 33 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 33 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-01-08 22:11:20,443 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 50 Invalid, 33 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 33 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-01-08 22:11:20,443 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 114 states. [2025-01-08 22:11:20,455 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 114 to 113. [2025-01-08 22:11:20,455 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 113 states, 112 states have (on average 1.0267857142857142) internal successors, (115), 112 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-08 22:11:20,456 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 113 states to 113 states and 115 transitions. [2025-01-08 22:11:20,456 INFO L78 Accepts]: Start accepts. Automaton has 113 states and 115 transitions. Word has length 109 [2025-01-08 22:11:20,456 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-08 22:11:20,456 INFO L471 AbstractCegarLoop]: Abstraction has 113 states and 115 transitions. [2025-01-08 22:11:20,456 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 3.1) internal successors, (31), 10 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-08 22:11:20,456 INFO L276 IsEmpty]: Start isEmpty. Operand 113 states and 115 transitions. [2025-01-08 22:11:20,457 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2025-01-08 22:11:20,457 INFO L210 NwaCegarLoop]: Found error trace [2025-01-08 22:11:20,457 INFO L218 NwaCegarLoop]: trace histogram [94, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-08 22:11:20,466 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2025-01-08 22:11:20,658 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 22:11:20,658 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-01-08 22:11:20,658 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-08 22:11:20,658 INFO L85 PathProgramCache]: Analyzing trace with hash 76931757, now seen corresponding path program 4 times [2025-01-08 22:11:20,658 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-08 22:11:20,658 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [80553472] [2025-01-08 22:11:20,658 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-01-08 22:11:20,658 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-08 22:11:20,687 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 112 statements into 2 equivalence classes. [2025-01-08 22:11:20,724 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) and asserted 112 of 112 statements. [2025-01-08 22:11:20,724 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) [2025-01-08 22:11:20,724 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-08 22:11:25,203 INFO L134 CoverageAnalysis]: Checked inductivity of 4474 backedges. 0 proven. 4466 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2025-01-08 22:11:25,204 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-08 22:11:25,204 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [80553472] [2025-01-08 22:11:25,204 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [80553472] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-08 22:11:25,204 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1902882065] [2025-01-08 22:11:25,204 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-01-08 22:11:25,204 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-08 22:11:25,204 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-08 22:11:25,206 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 22:11:25,207 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 22:11:25,343 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 112 statements into 2 equivalence classes. [2025-01-08 22:11:25,425 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) and asserted 112 of 112 statements. [2025-01-08 22:11:25,425 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) [2025-01-08 22:11:25,425 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-08 22:11:25,429 INFO L256 TraceCheckSpWp]: Trace formula consists of 915 conjuncts, 96 conjuncts are in the unsatisfiable core [2025-01-08 22:11:25,432 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-08 22:11:25,606 INFO L134 CoverageAnalysis]: Checked inductivity of 4474 backedges. 0 proven. 4465 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2025-01-08 22:11:25,608 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-01-08 22:11:33,269 INFO L134 CoverageAnalysis]: Checked inductivity of 4474 backedges. 0 proven. 4465 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2025-01-08 22:11:33,269 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1902882065] provided 0 perfect and 2 imperfect interpolant sequences [2025-01-08 22:11:33,269 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-01-08 22:11:33,270 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [98, 97, 97] total 194 [2025-01-08 22:11:33,270 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [530980176] [2025-01-08 22:11:33,270 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-01-08 22:11:33,270 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 194 states [2025-01-08 22:11:33,270 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-08 22:11:33,273 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 194 interpolants. [2025-01-08 22:11:33,278 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=18530, Invalid=18912, Unknown=0, NotChecked=0, Total=37442 [2025-01-08 22:11:33,278 INFO L87 Difference]: Start difference. First operand 113 states and 115 transitions. Second operand has 194 states, 194 states have (on average 1.0670103092783505) internal successors, (207), 194 states have internal predecessors, (207), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-08 22:11:33,527 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-08 22:11:33,527 INFO L93 Difference]: Finished difference Result 225 states and 324 transitions. [2025-01-08 22:11:33,527 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 192 states. [2025-01-08 22:11:33,527 INFO L78 Accepts]: Start accepts. Automaton has has 194 states, 194 states have (on average 1.0670103092783505) internal successors, (207), 194 states have internal predecessors, (207), 0 states have call successors, (0), 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 112 [2025-01-08 22:11:33,528 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-08 22:11:33,528 INFO L225 Difference]: With dead ends: 225 [2025-01-08 22:11:33,529 INFO L226 Difference]: Without dead ends: 209 [2025-01-08 22:11:33,531 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 321 GetRequests, 129 SyntacticMatches, 0 SemanticMatches, 192 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 470 ImplicationChecksByTransitivity, 10.3s TimeCoverageRelationStatistics Valid=18530, Invalid=18912, Unknown=0, NotChecked=0, Total=37442 [2025-01-08 22:11:33,531 INFO L435 NwaCegarLoop]: 13 mSDtfsCounter, 0 mSDsluCounter, 86 mSDsCounter, 0 mSdLazyCounter, 203 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 99 SdHoareTripleChecker+Invalid, 204 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 203 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-01-08 22:11:33,531 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 99 Invalid, 204 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 203 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-01-08 22:11:33,532 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 209 states. [2025-01-08 22:11:33,540 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 209 to 209. [2025-01-08 22:11:33,540 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 209 states, 208 states have (on average 1.0144230769230769) internal successors, (211), 208 states have internal predecessors, (211), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-08 22:11:33,541 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 209 states to 209 states and 211 transitions. [2025-01-08 22:11:33,541 INFO L78 Accepts]: Start accepts. Automaton has 209 states and 211 transitions. Word has length 112 [2025-01-08 22:11:33,541 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-08 22:11:33,541 INFO L471 AbstractCegarLoop]: Abstraction has 209 states and 211 transitions. [2025-01-08 22:11:33,542 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 194 states, 194 states have (on average 1.0670103092783505) internal successors, (207), 194 states have internal predecessors, (207), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-08 22:11:33,542 INFO L276 IsEmpty]: Start isEmpty. Operand 209 states and 211 transitions. [2025-01-08 22:11:33,543 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 209 [2025-01-08 22:11:33,543 INFO L210 NwaCegarLoop]: Found error trace [2025-01-08 22:11:33,543 INFO L218 NwaCegarLoop]: trace histogram [190, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-08 22:11:33,550 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 22:11:33,747 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 22:11:33,747 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-01-08 22:11:33,748 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-08 22:11:33,748 INFO L85 PathProgramCache]: Analyzing trace with hash -424467795, now seen corresponding path program 5 times [2025-01-08 22:11:33,748 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-08 22:11:33,748 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1314644272] [2025-01-08 22:11:33,748 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2025-01-08 22:11:33,748 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-08 22:11:33,803 INFO L108 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 partitioned 208 statements into 96 equivalence classes. [2025-01-08 22:11:36,780 INFO L111 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 96 check-sat command(s) and asserted 208 of 208 statements. [2025-01-08 22:11:36,780 INFO L114 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 96 check-sat command(s) [2025-01-08 22:11:36,780 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-08 22:11:50,796 INFO L134 CoverageAnalysis]: Checked inductivity of 18154 backedges. 0 proven. 18145 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2025-01-08 22:11:50,796 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-08 22:11:50,797 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1314644272] [2025-01-08 22:11:50,797 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1314644272] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-08 22:11:50,797 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1397458453] [2025-01-08 22:11:50,797 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2025-01-08 22:11:50,797 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-08 22:11:50,797 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-08 22:11:50,799 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 22:11:50,800 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 22:11:50,999 INFO L108 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 partitioned 208 statements into 96 equivalence classes.