./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/array-lopstr16/flag_loopdep_simple.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-lopstr16/flag_loopdep_simple.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 2e1c46549da470f14361a9b2a5fb79d079bbffb4006138f4fef05b9b152f9be7 --- Real Ultimate output --- This is Ultimate 0.3.0-?-551b009-m [2025-01-08 22:36:36,497 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-01-08 22:36:36,548 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2025-01-08 22:36:36,551 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-01-08 22:36:36,552 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-01-08 22:36:36,577 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-01-08 22:36:36,579 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-01-08 22:36:36,579 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-01-08 22:36:36,579 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-01-08 22:36:36,579 INFO L153 SettingsManager]: * Use memory slicer=true [2025-01-08 22:36:36,580 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-01-08 22:36:36,580 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-01-08 22:36:36,580 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-01-08 22:36:36,580 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-01-08 22:36:36,580 INFO L153 SettingsManager]: * Use SBE=true [2025-01-08 22:36:36,581 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-01-08 22:36:36,581 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2025-01-08 22:36:36,581 INFO L153 SettingsManager]: * sizeof long=4 [2025-01-08 22:36:36,581 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-01-08 22:36:36,581 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-01-08 22:36:36,581 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-01-08 22:36:36,581 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2025-01-08 22:36:36,581 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-01-08 22:36:36,581 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2025-01-08 22:36:36,582 INFO L153 SettingsManager]: * sizeof long double=12 [2025-01-08 22:36:36,582 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2025-01-08 22:36:36,582 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-01-08 22:36:36,582 INFO L153 SettingsManager]: * Use constant arrays=true [2025-01-08 22:36:36,582 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-01-08 22:36:36,582 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-01-08 22:36:36,582 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-01-08 22:36:36,582 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-01-08 22:36:36,582 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-01-08 22:36:36,583 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2025-01-08 22:36:36,583 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-01-08 22:36:36,583 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-01-08 22:36:36,583 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-01-08 22:36:36,583 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-01-08 22:36:36,583 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-01-08 22:36:36,583 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-01-08 22:36:36,583 INFO L153 SettingsManager]: * Compute procedure contracts=false [2025-01-08 22:36:36,583 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2025-01-08 22:36:36,583 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-01-08 22:36:36,583 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2025-01-08 22:36:36,583 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2025-01-08 22:36:36,583 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-01-08 22:36:36,584 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-01-08 22:36:36,584 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-01-08 22:36:36,584 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 -> 2e1c46549da470f14361a9b2a5fb79d079bbffb4006138f4fef05b9b152f9be7 [2025-01-08 22:36:36,828 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-01-08 22:36:36,837 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-01-08 22:36:36,839 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-01-08 22:36:36,840 INFO L270 PluginConnector]: Initializing CDTParser... [2025-01-08 22:36:36,841 INFO L274 PluginConnector]: CDTParser initialized [2025-01-08 22:36:36,841 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/array-lopstr16/flag_loopdep_simple.i [2025-01-08 22:36:38,092 INFO L533 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/e28a33a4a/b14dbc6ea8ec442ca80ef0bcac1aebb4/FLAGfa7a7c5be [2025-01-08 22:36:38,326 INFO L384 CDTParser]: Found 1 translation units. [2025-01-08 22:36:38,326 INFO L180 CDTParser]: Scanning /storage/repos/ultimate-jdk21/releaseScripts/default/sv-benchmarks/c/array-lopstr16/flag_loopdep_simple.i [2025-01-08 22:36:38,332 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/e28a33a4a/b14dbc6ea8ec442ca80ef0bcac1aebb4/FLAGfa7a7c5be [2025-01-08 22:36:38,342 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/e28a33a4a/b14dbc6ea8ec442ca80ef0bcac1aebb4 [2025-01-08 22:36:38,343 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-01-08 22:36:38,344 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2025-01-08 22:36:38,345 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-01-08 22:36:38,345 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-01-08 22:36:38,348 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-01-08 22:36:38,349 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.01 10:36:38" (1/1) ... [2025-01-08 22:36:38,349 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6da76ceb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.01 10:36:38, skipping insertion in model container [2025-01-08 22:36:38,349 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.01 10:36:38" (1/1) ... [2025-01-08 22:36:38,358 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-01-08 22:36:38,458 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-lopstr16/flag_loopdep_simple.i[812,825] [2025-01-08 22:36:38,473 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-01-08 22:36:38,480 INFO L200 MainTranslator]: Completed pre-run [2025-01-08 22:36:38,488 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-lopstr16/flag_loopdep_simple.i[812,825] [2025-01-08 22:36:38,494 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-01-08 22:36:38,507 INFO L204 MainTranslator]: Completed translation [2025-01-08 22:36:38,508 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.01 10:36:38 WrapperNode [2025-01-08 22:36:38,509 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-01-08 22:36:38,509 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-01-08 22:36:38,510 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-01-08 22:36:38,510 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-01-08 22:36:38,515 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.01 10:36:38" (1/1) ... [2025-01-08 22:36:38,519 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.01 10:36:38" (1/1) ... [2025-01-08 22:36:38,529 INFO L138 Inliner]: procedures = 17, calls = 14, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 54 [2025-01-08 22:36:38,530 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-01-08 22:36:38,531 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-01-08 22:36:38,531 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-01-08 22:36:38,532 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-01-08 22:36:38,537 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.01 10:36:38" (1/1) ... [2025-01-08 22:36:38,537 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.01 10:36:38" (1/1) ... [2025-01-08 22:36:38,542 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.01 10:36:38" (1/1) ... [2025-01-08 22:36:38,549 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 22:36:38,552 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.01 10:36:38" (1/1) ... [2025-01-08 22:36:38,552 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.01 10:36:38" (1/1) ... [2025-01-08 22:36:38,555 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.01 10:36:38" (1/1) ... [2025-01-08 22:36:38,557 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.01 10:36:38" (1/1) ... [2025-01-08 22:36:38,562 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.01 10:36:38" (1/1) ... [2025-01-08 22:36:38,563 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.01 10:36:38" (1/1) ... [2025-01-08 22:36:38,567 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.01 10:36:38" (1/1) ... [2025-01-08 22:36:38,568 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-01-08 22:36:38,568 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2025-01-08 22:36:38,568 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2025-01-08 22:36:38,568 INFO L274 PluginConnector]: RCFGBuilder initialized [2025-01-08 22:36:38,569 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.01 10:36:38" (1/1) ... [2025-01-08 22:36:38,574 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-01-08 22:36:38,583 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-08 22:36:38,599 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 22:36:38,601 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 22:36:38,617 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2025-01-08 22:36:38,617 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2025-01-08 22:36:38,617 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2025-01-08 22:36:38,617 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2025-01-08 22:36:38,617 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2025-01-08 22:36:38,617 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2025-01-08 22:36:38,617 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-01-08 22:36:38,618 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-01-08 22:36:38,618 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2025-01-08 22:36:38,618 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2025-01-08 22:36:38,618 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2025-01-08 22:36:38,660 INFO L234 CfgBuilder]: Building ICFG [2025-01-08 22:36:38,661 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2025-01-08 22:36:38,741 INFO L? ?]: Removed 12 outVars from TransFormulas that were not future-live. [2025-01-08 22:36:38,742 INFO L283 CfgBuilder]: Performing block encoding [2025-01-08 22:36:38,748 INFO L307 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-01-08 22:36:38,748 INFO L312 CfgBuilder]: Removed 0 assume(true) statements. [2025-01-08 22:36:38,748 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 08.01 10:36:38 BoogieIcfgContainer [2025-01-08 22:36:38,748 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2025-01-08 22:36:38,750 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2025-01-08 22:36:38,750 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2025-01-08 22:36:38,753 INFO L274 PluginConnector]: TraceAbstraction initialized [2025-01-08 22:36:38,753 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 08.01 10:36:38" (1/3) ... [2025-01-08 22:36:38,754 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@77c09c55 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.01 10:36:38, skipping insertion in model container [2025-01-08 22:36:38,754 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.01 10:36:38" (2/3) ... [2025-01-08 22:36:38,754 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@77c09c55 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.01 10:36:38, skipping insertion in model container [2025-01-08 22:36:38,754 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 08.01 10:36:38" (3/3) ... [2025-01-08 22:36:38,755 INFO L128 eAbstractionObserver]: Analyzing ICFG flag_loopdep_simple.i [2025-01-08 22:36:38,764 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2025-01-08 22:36:38,765 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG flag_loopdep_simple.i that has 1 procedures, 17 locations, 1 initial locations, 3 loop locations, and 1 error locations. [2025-01-08 22:36:38,815 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-01-08 22:36:38,830 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;@501d1c11, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-01-08 22:36:38,831 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2025-01-08 22:36:38,834 INFO L276 IsEmpty]: Start isEmpty. Operand has 17 states, 15 states have (on average 1.4666666666666666) internal successors, (22), 16 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-08 22:36:38,837 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2025-01-08 22:36:38,837 INFO L210 NwaCegarLoop]: Found error trace [2025-01-08 22:36:38,841 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-08 22:36:38,841 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-01-08 22:36:38,845 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-08 22:36:38,845 INFO L85 PathProgramCache]: Analyzing trace with hash 2107568759, now seen corresponding path program 1 times [2025-01-08 22:36:38,852 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-08 22:36:38,852 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1352783546] [2025-01-08 22:36:38,853 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-08 22:36:38,853 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-08 22:36:38,917 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 9 statements into 1 equivalence classes. [2025-01-08 22:36:38,947 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 9 of 9 statements. [2025-01-08 22:36:38,948 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-08 22:36:38,948 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-08 22:36:39,094 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 22:36:39,096 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-08 22:36:39,096 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1352783546] [2025-01-08 22:36:39,097 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1352783546] provided 1 perfect and 0 imperfect interpolant sequences [2025-01-08 22:36:39,097 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-01-08 22:36:39,097 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-01-08 22:36:39,098 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1637078998] [2025-01-08 22:36:39,099 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-01-08 22:36:39,101 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-01-08 22:36:39,101 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-08 22:36:39,114 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-01-08 22:36:39,114 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-01-08 22:36:39,116 INFO L87 Difference]: Start difference. First operand has 17 states, 15 states have (on average 1.4666666666666666) internal successors, (22), 16 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 3 states have (on average 3.0) internal successors, (9), 3 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-08 22:36:39,137 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-08 22:36:39,139 INFO L93 Difference]: Finished difference Result 32 states and 42 transitions. [2025-01-08 22:36:39,142 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-01-08 22:36:39,143 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 3.0) internal successors, (9), 3 states have internal predecessors, (9), 0 states have call successors, (0), 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 9 [2025-01-08 22:36:39,143 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-08 22:36:39,147 INFO L225 Difference]: With dead ends: 32 [2025-01-08 22:36:39,148 INFO L226 Difference]: Without dead ends: 15 [2025-01-08 22:36:39,150 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 22:36:39,153 INFO L435 NwaCegarLoop]: 20 mSDtfsCounter, 0 mSDsluCounter, 17 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 37 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 22:36:39,155 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 37 Invalid, 4 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-01-08 22:36:39,163 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15 states. [2025-01-08 22:36:39,171 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15 to 15. [2025-01-08 22:36:39,173 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15 states, 14 states have (on average 1.3571428571428572) 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 22:36:39,175 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 19 transitions. [2025-01-08 22:36:39,176 INFO L78 Accepts]: Start accepts. Automaton has 15 states and 19 transitions. Word has length 9 [2025-01-08 22:36:39,176 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-08 22:36:39,177 INFO L471 AbstractCegarLoop]: Abstraction has 15 states and 19 transitions. [2025-01-08 22:36:39,177 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 3.0) internal successors, (9), 3 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-08 22:36:39,178 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states and 19 transitions. [2025-01-08 22:36:39,178 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2025-01-08 22:36:39,178 INFO L210 NwaCegarLoop]: Found error trace [2025-01-08 22:36:39,178 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-08 22:36:39,179 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2025-01-08 22:36:39,179 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-01-08 22:36:39,179 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-08 22:36:39,180 INFO L85 PathProgramCache]: Analyzing trace with hash -431503977, now seen corresponding path program 1 times [2025-01-08 22:36:39,180 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-08 22:36:39,180 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1925534199] [2025-01-08 22:36:39,180 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-08 22:36:39,180 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-08 22:36:39,193 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 10 statements into 1 equivalence classes. [2025-01-08 22:36:39,199 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 10 of 10 statements. [2025-01-08 22:36:39,200 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-08 22:36:39,201 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-08 22:36:39,252 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-01-08 22:36:39,252 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-08 22:36:39,252 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1925534199] [2025-01-08 22:36:39,252 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1925534199] provided 1 perfect and 0 imperfect interpolant sequences [2025-01-08 22:36:39,252 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-01-08 22:36:39,252 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-01-08 22:36:39,252 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [136195532] [2025-01-08 22:36:39,252 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-01-08 22:36:39,253 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-01-08 22:36:39,253 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-08 22:36:39,253 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-01-08 22:36:39,253 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-01-08 22:36:39,253 INFO L87 Difference]: Start difference. First operand 15 states and 19 transitions. Second operand has 3 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 3 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 22:36:39,280 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-08 22:36:39,280 INFO L93 Difference]: Finished difference Result 32 states and 40 transitions. [2025-01-08 22:36:39,280 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-01-08 22:36:39,280 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 3 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 10 [2025-01-08 22:36:39,280 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-08 22:36:39,281 INFO L225 Difference]: With dead ends: 32 [2025-01-08 22:36:39,281 INFO L226 Difference]: Without dead ends: 25 [2025-01-08 22:36:39,281 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 22:36:39,282 INFO L435 NwaCegarLoop]: 13 mSDtfsCounter, 10 mSDsluCounter, 10 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 23 SdHoareTripleChecker+Invalid, 12 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-01-08 22:36:39,282 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [10 Valid, 23 Invalid, 12 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-01-08 22:36:39,283 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25 states. [2025-01-08 22:36:39,285 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25 to 16. [2025-01-08 22:36:39,285 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16 states, 15 states have (on average 1.3333333333333333) internal successors, (20), 15 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 22:36:39,285 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 20 transitions. [2025-01-08 22:36:39,285 INFO L78 Accepts]: Start accepts. Automaton has 16 states and 20 transitions. Word has length 10 [2025-01-08 22:36:39,285 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-08 22:36:39,286 INFO L471 AbstractCegarLoop]: Abstraction has 16 states and 20 transitions. [2025-01-08 22:36:39,286 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 3 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 22:36:39,286 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states and 20 transitions. [2025-01-08 22:36:39,286 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2025-01-08 22:36:39,286 INFO L210 NwaCegarLoop]: Found error trace [2025-01-08 22:36:39,286 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-08 22:36:39,286 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2025-01-08 22:36:39,286 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-01-08 22:36:39,287 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-08 22:36:39,287 INFO L85 PathProgramCache]: Analyzing trace with hash 844506063, now seen corresponding path program 1 times [2025-01-08 22:36:39,287 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-08 22:36:39,287 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [397701359] [2025-01-08 22:36:39,287 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-08 22:36:39,287 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-08 22:36:39,301 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 13 statements into 1 equivalence classes. [2025-01-08 22:36:39,312 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 13 of 13 statements. [2025-01-08 22:36:39,314 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-08 22:36:39,315 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-08 22:36:39,353 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-01-08 22:36:39,353 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-08 22:36:39,354 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [397701359] [2025-01-08 22:36:39,354 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [397701359] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-08 22:36:39,354 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1169632826] [2025-01-08 22:36:39,354 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-08 22:36:39,354 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-08 22:36:39,354 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-08 22:36:39,362 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 22:36:39,363 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 22:36:39,408 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 13 statements into 1 equivalence classes. [2025-01-08 22:36:39,422 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 13 of 13 statements. [2025-01-08 22:36:39,422 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-08 22:36:39,422 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-08 22:36:39,423 INFO L256 TraceCheckSpWp]: Trace formula consists of 80 conjuncts, 2 conjuncts are in the unsatisfiable core [2025-01-08 22:36:39,425 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-08 22:36:39,442 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-01-08 22:36:39,443 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-01-08 22:36:39,443 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1169632826] provided 1 perfect and 0 imperfect interpolant sequences [2025-01-08 22:36:39,443 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-01-08 22:36:39,444 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 5 [2025-01-08 22:36:39,444 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [329842998] [2025-01-08 22:36:39,444 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-01-08 22:36:39,444 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-01-08 22:36:39,444 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-08 22:36:39,445 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-01-08 22:36:39,445 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2025-01-08 22:36:39,446 INFO L87 Difference]: Start difference. First operand 16 states and 20 transitions. Second operand has 3 states, 3 states have (on average 4.333333333333333) internal successors, (13), 3 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-08 22:36:39,456 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-08 22:36:39,456 INFO L93 Difference]: Finished difference Result 29 states and 37 transitions. [2025-01-08 22:36:39,457 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-01-08 22:36:39,457 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 4.333333333333333) internal successors, (13), 3 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 13 [2025-01-08 22:36:39,457 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-08 22:36:39,458 INFO L225 Difference]: With dead ends: 29 [2025-01-08 22:36:39,458 INFO L226 Difference]: Without dead ends: 16 [2025-01-08 22:36:39,458 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2025-01-08 22:36:39,458 INFO L435 NwaCegarLoop]: 20 mSDtfsCounter, 4 mSDsluCounter, 14 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 34 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 22:36:39,459 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 34 Invalid, 4 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-01-08 22:36:39,459 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16 states. [2025-01-08 22:36:39,460 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16 to 16. [2025-01-08 22:36:39,460 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16 states, 15 states have (on average 1.2666666666666666) internal successors, (19), 15 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 22:36:39,461 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 19 transitions. [2025-01-08 22:36:39,461 INFO L78 Accepts]: Start accepts. Automaton has 16 states and 19 transitions. Word has length 13 [2025-01-08 22:36:39,461 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-08 22:36:39,461 INFO L471 AbstractCegarLoop]: Abstraction has 16 states and 19 transitions. [2025-01-08 22:36:39,461 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 4.333333333333333) internal successors, (13), 3 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-08 22:36:39,461 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states and 19 transitions. [2025-01-08 22:36:39,461 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2025-01-08 22:36:39,461 INFO L210 NwaCegarLoop]: Found error trace [2025-01-08 22:36:39,461 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-08 22:36:39,467 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2025-01-08 22:36:39,666 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-08 22:36:39,666 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-01-08 22:36:39,667 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-08 22:36:39,667 INFO L85 PathProgramCache]: Analyzing trace with hash -1675453871, now seen corresponding path program 1 times [2025-01-08 22:36:39,667 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-08 22:36:39,667 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1364423382] [2025-01-08 22:36:39,667 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-08 22:36:39,667 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-08 22:36:39,675 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 13 statements into 1 equivalence classes. [2025-01-08 22:36:39,682 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 13 of 13 statements. [2025-01-08 22:36:39,683 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-08 22:36:39,683 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-08 22:36:39,732 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-01-08 22:36:39,732 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-08 22:36:39,732 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1364423382] [2025-01-08 22:36:39,733 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1364423382] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-08 22:36:39,733 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1432561008] [2025-01-08 22:36:39,733 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-08 22:36:39,733 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-08 22:36:39,733 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-08 22:36:39,738 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 22:36:39,742 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 22:36:39,778 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 13 statements into 1 equivalence classes. [2025-01-08 22:36:39,789 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 13 of 13 statements. [2025-01-08 22:36:39,789 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-08 22:36:39,789 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-08 22:36:39,790 INFO L256 TraceCheckSpWp]: Trace formula consists of 79 conjuncts, 5 conjuncts are in the unsatisfiable core [2025-01-08 22:36:39,791 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-08 22:36:39,829 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-01-08 22:36:39,829 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-01-08 22:36:39,850 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-01-08 22:36:39,850 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1432561008] provided 0 perfect and 2 imperfect interpolant sequences [2025-01-08 22:36:39,850 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-01-08 22:36:39,850 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 8 [2025-01-08 22:36:39,850 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [507133351] [2025-01-08 22:36:39,850 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-01-08 22:36:39,850 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2025-01-08 22:36:39,851 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-08 22:36:39,851 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2025-01-08 22:36:39,851 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2025-01-08 22:36:39,851 INFO L87 Difference]: Start difference. First operand 16 states and 19 transitions. Second operand has 8 states, 8 states have (on average 3.0) internal successors, (24), 8 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-08 22:36:39,882 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-08 22:36:39,882 INFO L93 Difference]: Finished difference Result 50 states and 61 transitions. [2025-01-08 22:36:39,882 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2025-01-08 22:36:39,882 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 3.0) internal successors, (24), 8 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 13 [2025-01-08 22:36:39,883 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-08 22:36:39,883 INFO L225 Difference]: With dead ends: 50 [2025-01-08 22:36:39,883 INFO L226 Difference]: Without dead ends: 38 [2025-01-08 22:36:39,883 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2025-01-08 22:36:39,884 INFO L435 NwaCegarLoop]: 11 mSDtfsCounter, 23 mSDsluCounter, 22 mSDsCounter, 0 mSdLazyCounter, 29 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 23 SdHoareTripleChecker+Valid, 33 SdHoareTripleChecker+Invalid, 33 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 29 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-01-08 22:36:39,884 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [23 Valid, 33 Invalid, 33 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 29 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-01-08 22:36:39,884 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states. [2025-01-08 22:36:39,886 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 22. [2025-01-08 22:36:39,886 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22 states, 21 states have (on average 1.1904761904761905) internal successors, (25), 21 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-08 22:36:39,887 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 25 transitions. [2025-01-08 22:36:39,887 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 25 transitions. Word has length 13 [2025-01-08 22:36:39,887 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-08 22:36:39,887 INFO L471 AbstractCegarLoop]: Abstraction has 22 states and 25 transitions. [2025-01-08 22:36:39,887 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 3.0) internal successors, (24), 8 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-08 22:36:39,887 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 25 transitions. [2025-01-08 22:36:39,887 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2025-01-08 22:36:39,887 INFO L210 NwaCegarLoop]: Found error trace [2025-01-08 22:36:39,887 INFO L218 NwaCegarLoop]: trace histogram [4, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-08 22:36:39,896 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 22:36:40,088 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 22:36:40,088 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-01-08 22:36:40,088 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-08 22:36:40,088 INFO L85 PathProgramCache]: Analyzing trace with hash -173301705, now seen corresponding path program 2 times [2025-01-08 22:36:40,089 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-08 22:36:40,089 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [732917782] [2025-01-08 22:36:40,089 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-01-08 22:36:40,089 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-08 22:36:40,105 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 19 statements into 2 equivalence classes. [2025-01-08 22:36:40,113 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 19 of 19 statements. [2025-01-08 22:36:40,114 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-01-08 22:36:40,114 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-08 22:36:40,266 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2025-01-08 22:36:40,266 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-08 22:36:40,266 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [732917782] [2025-01-08 22:36:40,266 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [732917782] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-08 22:36:40,266 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1005950954] [2025-01-08 22:36:40,267 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-01-08 22:36:40,267 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-08 22:36:40,267 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-08 22:36:40,269 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 22:36:40,274 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 22:36:40,308 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 19 statements into 2 equivalence classes. [2025-01-08 22:36:40,325 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 19 of 19 statements. [2025-01-08 22:36:40,325 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-01-08 22:36:40,325 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-08 22:36:40,326 INFO L256 TraceCheckSpWp]: Trace formula consists of 113 conjuncts, 8 conjuncts are in the unsatisfiable core [2025-01-08 22:36:40,328 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-08 22:36:40,394 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2025-01-08 22:36:40,394 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-01-08 22:36:40,478 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2025-01-08 22:36:40,478 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1005950954] provided 0 perfect and 2 imperfect interpolant sequences [2025-01-08 22:36:40,478 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-01-08 22:36:40,478 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 17 [2025-01-08 22:36:40,478 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1447309707] [2025-01-08 22:36:40,478 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-01-08 22:36:40,479 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2025-01-08 22:36:40,479 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-08 22:36:40,479 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2025-01-08 22:36:40,479 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=126, Invalid=146, Unknown=0, NotChecked=0, Total=272 [2025-01-08 22:36:40,479 INFO L87 Difference]: Start difference. First operand 22 states and 25 transitions. Second operand has 17 states, 17 states have (on average 1.6470588235294117) internal successors, (28), 17 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-08 22:36:40,498 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-08 22:36:40,498 INFO L93 Difference]: Finished difference Result 43 states and 54 transitions. [2025-01-08 22:36:40,498 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2025-01-08 22:36:40,498 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 1.6470588235294117) internal successors, (28), 17 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2025-01-08 22:36:40,498 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-08 22:36:40,498 INFO L225 Difference]: With dead ends: 43 [2025-01-08 22:36:40,498 INFO L226 Difference]: Without dead ends: 28 [2025-01-08 22:36:40,499 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=126, Invalid=146, Unknown=0, NotChecked=0, Total=272 [2025-01-08 22:36:40,499 INFO L435 NwaCegarLoop]: 16 mSDtfsCounter, 0 mSDsluCounter, 78 mSDsCounter, 0 mSdLazyCounter, 25 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 94 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 22:36:40,499 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 94 Invalid, 26 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 25 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-01-08 22:36:40,500 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states. [2025-01-08 22:36:40,502 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 28. [2025-01-08 22:36:40,502 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 28 states, 27 states have (on average 1.1481481481481481) internal successors, (31), 27 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 22:36:40,502 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 31 transitions. [2025-01-08 22:36:40,502 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 31 transitions. Word has length 19 [2025-01-08 22:36:40,502 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-08 22:36:40,502 INFO L471 AbstractCegarLoop]: Abstraction has 28 states and 31 transitions. [2025-01-08 22:36:40,503 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 1.6470588235294117) internal successors, (28), 17 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-08 22:36:40,503 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 31 transitions. [2025-01-08 22:36:40,503 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2025-01-08 22:36:40,503 INFO L210 NwaCegarLoop]: Found error trace [2025-01-08 22:36:40,503 INFO L218 NwaCegarLoop]: trace histogram [10, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-08 22:36:40,510 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 22:36:40,707 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 22:36:40,707 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-01-08 22:36:40,708 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-08 22:36:40,708 INFO L85 PathProgramCache]: Analyzing trace with hash -1982280649, now seen corresponding path program 3 times [2025-01-08 22:36:40,708 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-08 22:36:40,708 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1238307654] [2025-01-08 22:36:40,708 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-01-08 22:36:40,708 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-08 22:36:40,718 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 25 statements into 6 equivalence classes. [2025-01-08 22:36:40,726 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) and asserted 19 of 25 statements. [2025-01-08 22:36:40,726 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2025-01-08 22:36:40,726 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-08 22:36:40,784 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2025-01-08 22:36:40,785 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-08 22:36:40,785 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1238307654] [2025-01-08 22:36:40,785 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1238307654] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-08 22:36:40,785 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1384974312] [2025-01-08 22:36:40,785 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-01-08 22:36:40,785 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-08 22:36:40,785 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-08 22:36:40,786 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 22:36:40,788 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 22:36:40,830 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 25 statements into 6 equivalence classes. [2025-01-08 22:36:40,859 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) and asserted 19 of 25 statements. [2025-01-08 22:36:40,859 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2025-01-08 22:36:40,859 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-08 22:36:40,860 INFO L256 TraceCheckSpWp]: Trace formula consists of 113 conjuncts, 4 conjuncts are in the unsatisfiable core [2025-01-08 22:36:40,861 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-08 22:36:40,887 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2025-01-08 22:36:40,887 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-01-08 22:36:40,925 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2025-01-08 22:36:40,925 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1384974312] provided 0 perfect and 2 imperfect interpolant sequences [2025-01-08 22:36:40,925 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-01-08 22:36:40,925 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 9 [2025-01-08 22:36:40,925 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [838075902] [2025-01-08 22:36:40,925 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-01-08 22:36:40,925 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2025-01-08 22:36:40,925 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-08 22:36:40,926 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2025-01-08 22:36:40,926 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=36, Unknown=0, NotChecked=0, Total=72 [2025-01-08 22:36:40,926 INFO L87 Difference]: Start difference. First operand 28 states and 31 transitions. Second operand has 9 states, 9 states have (on average 3.111111111111111) internal successors, (28), 9 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 22:36:40,995 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-08 22:36:40,996 INFO L93 Difference]: Finished difference Result 83 states and 96 transitions. [2025-01-08 22:36:40,996 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2025-01-08 22:36:40,996 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 3.111111111111111) internal successors, (28), 9 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 25 [2025-01-08 22:36:40,996 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-08 22:36:40,996 INFO L225 Difference]: With dead ends: 83 [2025-01-08 22:36:40,996 INFO L226 Difference]: Without dead ends: 76 [2025-01-08 22:36:40,997 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 46 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=36, Invalid=36, Unknown=0, NotChecked=0, Total=72 [2025-01-08 22:36:40,997 INFO L435 NwaCegarLoop]: 12 mSDtfsCounter, 60 mSDsluCounter, 48 mSDsCounter, 0 mSdLazyCounter, 41 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 60 SdHoareTripleChecker+Valid, 60 SdHoareTripleChecker+Invalid, 52 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 41 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-01-08 22:36:40,997 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [60 Valid, 60 Invalid, 52 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 41 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-01-08 22:36:40,998 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 76 states. [2025-01-08 22:36:41,004 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 76 to 40. [2025-01-08 22:36:41,004 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 40 states, 39 states have (on average 1.1025641025641026) internal successors, (43), 39 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-08 22:36:41,004 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 43 transitions. [2025-01-08 22:36:41,004 INFO L78 Accepts]: Start accepts. Automaton has 40 states and 43 transitions. Word has length 25 [2025-01-08 22:36:41,004 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-08 22:36:41,004 INFO L471 AbstractCegarLoop]: Abstraction has 40 states and 43 transitions. [2025-01-08 22:36:41,005 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 3.111111111111111) internal successors, (28), 9 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 22:36:41,005 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 43 transitions. [2025-01-08 22:36:41,005 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2025-01-08 22:36:41,005 INFO L210 NwaCegarLoop]: Found error trace [2025-01-08 22:36:41,005 INFO L218 NwaCegarLoop]: trace histogram [10, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-08 22:36:41,013 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2025-01-08 22:36:41,205 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 22:36:41,206 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-01-08 22:36:41,206 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-08 22:36:41,206 INFO L85 PathProgramCache]: Analyzing trace with hash 1207609271, now seen corresponding path program 4 times [2025-01-08 22:36:41,206 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-08 22:36:41,206 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1647443629] [2025-01-08 22:36:41,206 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-01-08 22:36:41,207 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-08 22:36:41,226 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 37 statements into 2 equivalence classes. [2025-01-08 22:36:41,240 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) and asserted 37 of 37 statements. [2025-01-08 22:36:41,240 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) [2025-01-08 22:36:41,240 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-08 22:36:41,548 INFO L134 CoverageAnalysis]: Checked inductivity of 106 backedges. 0 proven. 51 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2025-01-08 22:36:41,549 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-08 22:36:41,549 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1647443629] [2025-01-08 22:36:41,549 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1647443629] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-08 22:36:41,549 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [748392285] [2025-01-08 22:36:41,549 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-01-08 22:36:41,549 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-08 22:36:41,549 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-08 22:36:41,551 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 22:36:41,557 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 22:36:41,611 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 37 statements into 2 equivalence classes. [2025-01-08 22:36:41,631 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) and asserted 37 of 37 statements. [2025-01-08 22:36:41,631 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) [2025-01-08 22:36:41,631 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-08 22:36:41,632 INFO L256 TraceCheckSpWp]: Trace formula consists of 195 conjuncts, 8 conjuncts are in the unsatisfiable core [2025-01-08 22:36:41,633 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-08 22:36:41,668 INFO L134 CoverageAnalysis]: Checked inductivity of 106 backedges. 0 proven. 51 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2025-01-08 22:36:41,669 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-01-08 22:36:41,811 INFO L134 CoverageAnalysis]: Checked inductivity of 106 backedges. 0 proven. 51 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2025-01-08 22:36:41,811 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [748392285] provided 0 perfect and 2 imperfect interpolant sequences [2025-01-08 22:36:41,811 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-01-08 22:36:41,811 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 9, 9] total 18 [2025-01-08 22:36:41,811 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [796887452] [2025-01-08 22:36:41,811 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-01-08 22:36:41,811 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2025-01-08 22:36:41,811 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-08 22:36:41,812 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2025-01-08 22:36:41,812 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=138, Invalid=168, Unknown=0, NotChecked=0, Total=306 [2025-01-08 22:36:41,812 INFO L87 Difference]: Start difference. First operand 40 states and 43 transitions. Second operand has 18 states, 18 states have (on average 3.0) internal successors, (54), 18 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-08 22:36:41,936 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-08 22:36:41,936 INFO L93 Difference]: Finished difference Result 163 states and 188 transitions. [2025-01-08 22:36:41,936 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2025-01-08 22:36:41,936 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 3.0) internal successors, (54), 18 states have internal predecessors, (54), 0 states have call successors, (0), 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 22:36:41,937 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-08 22:36:41,937 INFO L225 Difference]: With dead ends: 163 [2025-01-08 22:36:41,938 INFO L226 Difference]: Without dead ends: 156 [2025-01-08 22:36:41,939 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 83 GetRequests, 67 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=138, Invalid=168, Unknown=0, NotChecked=0, Total=306 [2025-01-08 22:36:41,939 INFO L435 NwaCegarLoop]: 12 mSDtfsCounter, 235 mSDsluCounter, 96 mSDsCounter, 0 mSdLazyCounter, 83 mSolverCounterSat, 36 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 235 SdHoareTripleChecker+Valid, 108 SdHoareTripleChecker+Invalid, 119 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 36 IncrementalHoareTripleChecker+Valid, 83 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-01-08 22:36:41,939 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [235 Valid, 108 Invalid, 119 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [36 Valid, 83 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-01-08 22:36:41,940 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 156 states. [2025-01-08 22:36:41,944 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 156 to 64. [2025-01-08 22:36:41,944 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 64 states, 63 states have (on average 1.0634920634920635) internal successors, (67), 63 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-08 22:36:41,945 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 64 states to 64 states and 67 transitions. [2025-01-08 22:36:41,945 INFO L78 Accepts]: Start accepts. Automaton has 64 states and 67 transitions. Word has length 37 [2025-01-08 22:36:41,945 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-08 22:36:41,945 INFO L471 AbstractCegarLoop]: Abstraction has 64 states and 67 transitions. [2025-01-08 22:36:41,945 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 3.0) internal successors, (54), 18 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-08 22:36:41,945 INFO L276 IsEmpty]: Start isEmpty. Operand 64 states and 67 transitions. [2025-01-08 22:36:41,946 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2025-01-08 22:36:41,946 INFO L210 NwaCegarLoop]: Found error trace [2025-01-08 22:36:41,946 INFO L218 NwaCegarLoop]: trace histogram [14, 14, 14, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-08 22:36:41,952 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2025-01-08 22:36:42,147 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 22:36:42,147 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-01-08 22:36:42,147 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-08 22:36:42,147 INFO L85 PathProgramCache]: Analyzing trace with hash 1238802103, now seen corresponding path program 5 times [2025-01-08 22:36:42,147 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-08 22:36:42,147 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [451925112] [2025-01-08 22:36:42,147 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2025-01-08 22:36:42,147 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-08 22:36:42,158 INFO L108 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 partitioned 61 statements into 15 equivalence classes. [2025-01-08 22:36:42,180 INFO L111 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 15 check-sat command(s) and asserted 61 of 61 statements. [2025-01-08 22:36:42,180 INFO L114 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 15 check-sat command(s) [2025-01-08 22:36:42,181 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-08 22:36:42,459 INFO L134 CoverageAnalysis]: Checked inductivity of 342 backedges. 0 proven. 287 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2025-01-08 22:36:42,460 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-08 22:36:42,460 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [451925112] [2025-01-08 22:36:42,460 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [451925112] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-08 22:36:42,460 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [967654695] [2025-01-08 22:36:42,460 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2025-01-08 22:36:42,460 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-08 22:36:42,460 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-08 22:36:42,463 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 22:36:42,465 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 22:36:42,506 INFO L108 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 partitioned 61 statements into 15 equivalence classes. [2025-01-08 22:36:42,552 INFO L111 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 15 check-sat command(s) and asserted 61 of 61 statements. [2025-01-08 22:36:42,552 INFO L114 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 15 check-sat command(s) [2025-01-08 22:36:42,552 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-08 22:36:42,554 INFO L256 TraceCheckSpWp]: Trace formula consists of 251 conjuncts, 16 conjuncts are in the unsatisfiable core [2025-01-08 22:36:42,555 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-08 22:36:42,613 INFO L134 CoverageAnalysis]: Checked inductivity of 342 backedges. 0 proven. 287 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2025-01-08 22:36:42,613 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-01-08 22:36:42,944 INFO L134 CoverageAnalysis]: Checked inductivity of 342 backedges. 0 proven. 287 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2025-01-08 22:36:42,945 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [967654695] provided 0 perfect and 2 imperfect interpolant sequences [2025-01-08 22:36:42,945 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-01-08 22:36:42,945 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17, 17] total 32 [2025-01-08 22:36:42,945 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [539948949] [2025-01-08 22:36:42,945 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-01-08 22:36:42,945 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2025-01-08 22:36:42,945 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-08 22:36:42,946 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2025-01-08 22:36:42,946 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=496, Invalid=496, Unknown=0, NotChecked=0, Total=992 [2025-01-08 22:36:42,947 INFO L87 Difference]: Start difference. First operand 64 states and 67 transitions. Second operand has 32 states, 32 states have (on average 3.0) internal successors, (96), 32 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-08 22:36:43,165 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-08 22:36:43,165 INFO L93 Difference]: Finished difference Result 323 states and 372 transitions. [2025-01-08 22:36:43,165 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2025-01-08 22:36:43,165 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 32 states have (on average 3.0) internal successors, (96), 32 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 61 [2025-01-08 22:36:43,166 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-08 22:36:43,167 INFO L225 Difference]: With dead ends: 323 [2025-01-08 22:36:43,167 INFO L226 Difference]: Without dead ends: 316 [2025-01-08 22:36:43,168 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 137 GetRequests, 107 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=496, Invalid=496, Unknown=0, NotChecked=0, Total=992 [2025-01-08 22:36:43,168 INFO L435 NwaCegarLoop]: 12 mSDtfsCounter, 550 mSDsluCounter, 189 mSDsCounter, 0 mSdLazyCounter, 157 mSolverCounterSat, 81 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 550 SdHoareTripleChecker+Valid, 201 SdHoareTripleChecker+Invalid, 238 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 81 IncrementalHoareTripleChecker+Valid, 157 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2025-01-08 22:36:43,168 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [550 Valid, 201 Invalid, 238 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [81 Valid, 157 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2025-01-08 22:36:43,169 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 316 states. [2025-01-08 22:36:43,175 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 316 to 112. [2025-01-08 22:36:43,175 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 112 states, 111 states have (on average 1.0360360360360361) internal successors, (115), 111 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 22:36:43,176 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 112 states to 112 states and 115 transitions. [2025-01-08 22:36:43,176 INFO L78 Accepts]: Start accepts. Automaton has 112 states and 115 transitions. Word has length 61 [2025-01-08 22:36:43,176 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-08 22:36:43,176 INFO L471 AbstractCegarLoop]: Abstraction has 112 states and 115 transitions. [2025-01-08 22:36:43,177 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 32 states have (on average 3.0) internal successors, (96), 32 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-08 22:36:43,177 INFO L276 IsEmpty]: Start isEmpty. Operand 112 states and 115 transitions. [2025-01-08 22:36:43,178 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2025-01-08 22:36:43,178 INFO L210 NwaCegarLoop]: Found error trace [2025-01-08 22:36:43,178 INFO L218 NwaCegarLoop]: trace histogram [30, 30, 30, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-08 22:36:43,187 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 22:36:43,378 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 22:36:43,379 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-01-08 22:36:43,380 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-08 22:36:43,380 INFO L85 PathProgramCache]: Analyzing trace with hash 1215270071, now seen corresponding path program 6 times [2025-01-08 22:36:43,380 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-08 22:36:43,380 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [284228652] [2025-01-08 22:36:43,380 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2025-01-08 22:36:43,380 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-08 22:36:43,413 INFO L108 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE partitioned 109 statements into 31 equivalence classes. [2025-01-08 22:36:43,421 INFO L111 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 5 check-sat command(s) and asserted 25 of 109 statements. [2025-01-08 22:36:43,421 INFO L114 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 5 check-sat command(s) [2025-01-08 22:36:43,421 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-08 22:36:43,595 INFO L134 CoverageAnalysis]: Checked inductivity of 1390 backedges. 0 proven. 59 refuted. 0 times theorem prover too weak. 1331 trivial. 0 not checked. [2025-01-08 22:36:43,596 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-08 22:36:43,596 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [284228652] [2025-01-08 22:36:43,596 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [284228652] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-08 22:36:43,596 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1915758643] [2025-01-08 22:36:43,596 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2025-01-08 22:36:43,596 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-08 22:36:43,596 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-08 22:36:43,598 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 22:36:43,602 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 22:36:43,649 INFO L108 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE partitioned 109 statements into 31 equivalence classes. [2025-01-08 22:36:43,667 INFO L111 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 5 check-sat command(s) and asserted 25 of 109 statements. [2025-01-08 22:36:43,667 INFO L114 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 5 check-sat command(s) [2025-01-08 22:36:43,667 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-08 22:36:43,668 INFO L256 TraceCheckSpWp]: Trace formula consists of 127 conjuncts, 18 conjuncts are in the unsatisfiable core [2025-01-08 22:36:43,671 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-08 22:36:44,059 INFO L134 CoverageAnalysis]: Checked inductivity of 1390 backedges. 0 proven. 59 refuted. 0 times theorem prover too weak. 1331 trivial. 0 not checked. [2025-01-08 22:36:44,060 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-01-08 22:36:44,222 INFO L349 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2025-01-08 22:36:44,223 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 20 treesize of output 11 [2025-01-08 22:36:44,233 INFO L134 CoverageAnalysis]: Checked inductivity of 1390 backedges. 29 proven. 30 refuted. 0 times theorem prover too weak. 1331 trivial. 0 not checked. [2025-01-08 22:36:44,234 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1915758643] provided 0 perfect and 2 imperfect interpolant sequences [2025-01-08 22:36:44,234 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-01-08 22:36:44,234 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 7] total 13 [2025-01-08 22:36:44,234 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [917970624] [2025-01-08 22:36:44,234 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-01-08 22:36:44,234 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2025-01-08 22:36:44,234 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-08 22:36:44,235 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2025-01-08 22:36:44,235 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=117, Unknown=0, NotChecked=0, Total=156 [2025-01-08 22:36:44,235 INFO L87 Difference]: Start difference. First operand 112 states and 115 transitions. Second operand has 13 states, 13 states have (on average 2.230769230769231) internal successors, (29), 13 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-08 22:36:44,289 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-08 22:36:44,289 INFO L93 Difference]: Finished difference Result 119 states and 123 transitions. [2025-01-08 22:36:44,290 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2025-01-08 22:36:44,290 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 2.230769230769231) internal successors, (29), 13 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 109 [2025-01-08 22:36:44,290 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-08 22:36:44,291 INFO L225 Difference]: With dead ends: 119 [2025-01-08 22:36:44,291 INFO L226 Difference]: Without dead ends: 117 [2025-01-08 22:36:44,291 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 226 GetRequests, 213 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=58, Invalid=152, Unknown=0, NotChecked=0, Total=210 [2025-01-08 22:36:44,291 INFO L435 NwaCegarLoop]: 11 mSDtfsCounter, 27 mSDsluCounter, 47 mSDsCounter, 0 mSdLazyCounter, 53 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 27 SdHoareTripleChecker+Valid, 58 SdHoareTripleChecker+Invalid, 55 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 53 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-01-08 22:36:44,292 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [27 Valid, 58 Invalid, 55 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 53 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-01-08 22:36:44,292 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 117 states. [2025-01-08 22:36:44,299 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 117 to 115. [2025-01-08 22:36:44,299 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 115 states, 114 states have (on average 1.043859649122807) internal successors, (119), 114 states have internal predecessors, (119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-08 22:36:44,300 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 115 states to 115 states and 119 transitions. [2025-01-08 22:36:44,300 INFO L78 Accepts]: Start accepts. Automaton has 115 states and 119 transitions. Word has length 109 [2025-01-08 22:36:44,300 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-08 22:36:44,300 INFO L471 AbstractCegarLoop]: Abstraction has 115 states and 119 transitions. [2025-01-08 22:36:44,301 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 2.230769230769231) internal successors, (29), 13 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-08 22:36:44,301 INFO L276 IsEmpty]: Start isEmpty. Operand 115 states and 119 transitions. [2025-01-08 22:36:44,302 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2025-01-08 22:36:44,302 INFO L210 NwaCegarLoop]: Found error trace [2025-01-08 22:36:44,302 INFO L218 NwaCegarLoop]: trace histogram [30, 30, 30, 10, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-08 22:36:44,309 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2025-01-08 22:36:44,507 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 22:36:44,507 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-01-08 22:36:44,508 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-08 22:36:44,508 INFO L85 PathProgramCache]: Analyzing trace with hash -2110120016, now seen corresponding path program 1 times [2025-01-08 22:36:44,508 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-08 22:36:44,508 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2100659305] [2025-01-08 22:36:44,508 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-08 22:36:44,508 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-08 22:36:44,520 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 112 statements into 1 equivalence classes. [2025-01-08 22:36:44,529 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 112 of 112 statements. [2025-01-08 22:36:44,529 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-08 22:36:44,529 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-08 22:36:44,585 INFO L134 CoverageAnalysis]: Checked inductivity of 1392 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 1390 trivial. 0 not checked. [2025-01-08 22:36:44,585 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-08 22:36:44,585 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2100659305] [2025-01-08 22:36:44,586 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2100659305] provided 1 perfect and 0 imperfect interpolant sequences [2025-01-08 22:36:44,586 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-01-08 22:36:44,586 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-01-08 22:36:44,586 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [609818218] [2025-01-08 22:36:44,586 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-01-08 22:36:44,586 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-01-08 22:36:44,586 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-08 22:36:44,587 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-01-08 22:36:44,587 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-01-08 22:36:44,587 INFO L87 Difference]: Start difference. First operand 115 states and 119 transitions. Second operand has 3 states, 3 states have (on average 5.333333333333333) internal successors, (16), 3 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-08 22:36:44,593 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-08 22:36:44,593 INFO L93 Difference]: Finished difference Result 122 states and 127 transitions. [2025-01-08 22:36:44,593 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-01-08 22:36:44,594 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 5.333333333333333) internal successors, (16), 3 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 112 [2025-01-08 22:36:44,594 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-08 22:36:44,594 INFO L225 Difference]: With dead ends: 122 [2025-01-08 22:36:44,594 INFO L226 Difference]: Without dead ends: 115 [2025-01-08 22:36:44,595 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 22:36:44,595 INFO L435 NwaCegarLoop]: 15 mSDtfsCounter, 6 mSDsluCounter, 1 mSDsCounter, 0 mSdLazyCounter, 1 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 16 SdHoareTripleChecker+Invalid, 1 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 1 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-01-08 22:36:44,595 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 16 Invalid, 1 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 1 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-01-08 22:36:44,596 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 115 states. [2025-01-08 22:36:44,603 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 115 to 115. [2025-01-08 22:36:44,604 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 115 states, 114 states have (on average 1.0263157894736843) internal successors, (117), 114 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-08 22:36:44,604 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 115 states to 115 states and 117 transitions. [2025-01-08 22:36:44,604 INFO L78 Accepts]: Start accepts. Automaton has 115 states and 117 transitions. Word has length 112 [2025-01-08 22:36:44,605 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-08 22:36:44,605 INFO L471 AbstractCegarLoop]: Abstraction has 115 states and 117 transitions. [2025-01-08 22:36:44,605 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 5.333333333333333) internal successors, (16), 3 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-08 22:36:44,605 INFO L276 IsEmpty]: Start isEmpty. Operand 115 states and 117 transitions. [2025-01-08 22:36:44,606 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2025-01-08 22:36:44,606 INFO L210 NwaCegarLoop]: Found error trace [2025-01-08 22:36:44,606 INFO L218 NwaCegarLoop]: trace histogram [30, 30, 30, 10, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-08 22:36:44,606 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2025-01-08 22:36:44,606 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-01-08 22:36:44,606 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-08 22:36:44,606 INFO L85 PathProgramCache]: Analyzing trace with hash -684788230, now seen corresponding path program 1 times [2025-01-08 22:36:44,607 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-08 22:36:44,607 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [595045774] [2025-01-08 22:36:44,607 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-08 22:36:44,607 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-08 22:36:44,623 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 114 statements into 1 equivalence classes. [2025-01-08 22:36:44,633 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 114 of 114 statements. [2025-01-08 22:36:44,633 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-08 22:36:44,633 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-08 22:36:44,953 INFO L134 CoverageAnalysis]: Checked inductivity of 1393 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 1338 trivial. 0 not checked. [2025-01-08 22:36:44,954 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-08 22:36:44,954 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [595045774] [2025-01-08 22:36:44,954 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [595045774] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-08 22:36:44,954 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [718138388] [2025-01-08 22:36:44,954 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-08 22:36:44,954 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-08 22:36:44,954 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-08 22:36:44,956 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 22:36:44,961 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 22:36:45,012 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 114 statements into 1 equivalence classes. [2025-01-08 22:36:45,051 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 114 of 114 statements. [2025-01-08 22:36:45,051 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-08 22:36:45,051 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-08 22:36:45,052 INFO L256 TraceCheckSpWp]: Trace formula consists of 376 conjuncts, 14 conjuncts are in the unsatisfiable core [2025-01-08 22:36:45,054 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-08 22:36:45,249 INFO L134 CoverageAnalysis]: Checked inductivity of 1393 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 1338 trivial. 0 not checked. [2025-01-08 22:36:45,252 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-01-08 22:36:45,600 INFO L134 CoverageAnalysis]: Checked inductivity of 1393 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 1338 trivial. 0 not checked. [2025-01-08 22:36:45,600 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [718138388] provided 0 perfect and 2 imperfect interpolant sequences [2025-01-08 22:36:45,600 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-01-08 22:36:45,601 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13, 13] total 35 [2025-01-08 22:36:45,601 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1939550089] [2025-01-08 22:36:45,601 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-01-08 22:36:45,601 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 35 states [2025-01-08 22:36:45,601 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-08 22:36:45,602 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2025-01-08 22:36:45,602 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=540, Invalid=650, Unknown=0, NotChecked=0, Total=1190 [2025-01-08 22:36:45,602 INFO L87 Difference]: Start difference. First operand 115 states and 117 transitions. Second operand has 35 states, 35 states have (on average 1.4) internal successors, (49), 35 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-08 22:36:45,629 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-08 22:36:45,629 INFO L93 Difference]: Finished difference Result 229 states and 244 transitions. [2025-01-08 22:36:45,629 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2025-01-08 22:36:45,629 INFO L78 Accepts]: Start accepts. Automaton has has 35 states, 35 states have (on average 1.4) internal successors, (49), 35 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 114 [2025-01-08 22:36:45,630 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-08 22:36:45,630 INFO L225 Difference]: With dead ends: 229 [2025-01-08 22:36:45,630 INFO L226 Difference]: Without dead ends: 127 [2025-01-08 22:36:45,631 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 239 GetRequests, 206 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=540, Invalid=650, Unknown=0, NotChecked=0, Total=1190 [2025-01-08 22:36:45,631 INFO L435 NwaCegarLoop]: 15 mSDtfsCounter, 0 mSDsluCounter, 72 mSDsCounter, 0 mSdLazyCounter, 41 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 87 SdHoareTripleChecker+Invalid, 42 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 41 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-01-08 22:36:45,631 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 87 Invalid, 42 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 41 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-01-08 22:36:45,631 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 127 states. [2025-01-08 22:36:45,637 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 127 to 127. [2025-01-08 22:36:45,637 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 127 states, 126 states have (on average 1.0238095238095237) internal successors, (129), 126 states have internal predecessors, (129), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-08 22:36:45,637 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 127 states to 127 states and 129 transitions. [2025-01-08 22:36:45,638 INFO L78 Accepts]: Start accepts. Automaton has 127 states and 129 transitions. Word has length 114 [2025-01-08 22:36:45,638 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-08 22:36:45,638 INFO L471 AbstractCegarLoop]: Abstraction has 127 states and 129 transitions. [2025-01-08 22:36:45,638 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 35 states, 35 states have (on average 1.4) internal successors, (49), 35 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-08 22:36:45,638 INFO L276 IsEmpty]: Start isEmpty. Operand 127 states and 129 transitions. [2025-01-08 22:36:45,639 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 127 [2025-01-08 22:36:45,639 INFO L210 NwaCegarLoop]: Found error trace [2025-01-08 22:36:45,639 INFO L218 NwaCegarLoop]: trace histogram [30, 30, 30, 22, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-08 22:36:45,646 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2025-01-08 22:36:45,839 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,9 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-08 22:36:45,840 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-01-08 22:36:45,840 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-08 22:36:45,840 INFO L85 PathProgramCache]: Analyzing trace with hash -1107649030, now seen corresponding path program 2 times [2025-01-08 22:36:45,840 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-08 22:36:45,840 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1565973229] [2025-01-08 22:36:45,840 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-01-08 22:36:45,840 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-08 22:36:45,853 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 126 statements into 2 equivalence classes. [2025-01-08 22:36:45,865 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 126 of 126 statements. [2025-01-08 22:36:45,865 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-01-08 22:36:45,865 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-08 22:36:46,469 INFO L134 CoverageAnalysis]: Checked inductivity of 1591 backedges. 0 proven. 253 refuted. 0 times theorem prover too weak. 1338 trivial. 0 not checked. [2025-01-08 22:36:46,470 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-08 22:36:46,470 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1565973229] [2025-01-08 22:36:46,470 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1565973229] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-08 22:36:46,470 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1294624088] [2025-01-08 22:36:46,470 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-01-08 22:36:46,470 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-08 22:36:46,470 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-08 22:36:46,472 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 22:36:46,474 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 22:36:46,530 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 126 statements into 2 equivalence classes. [2025-01-08 22:36:46,570 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 126 of 126 statements. [2025-01-08 22:36:46,570 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-01-08 22:36:46,570 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-08 22:36:46,576 INFO L256 TraceCheckSpWp]: Trace formula consists of 484 conjuncts, 26 conjuncts are in the unsatisfiable core [2025-01-08 22:36:46,578 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-08 22:36:46,909 INFO L134 CoverageAnalysis]: Checked inductivity of 1591 backedges. 0 proven. 253 refuted. 0 times theorem prover too weak. 1338 trivial. 0 not checked. [2025-01-08 22:36:46,909 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-01-08 22:36:47,579 INFO L134 CoverageAnalysis]: Checked inductivity of 1591 backedges. 0 proven. 253 refuted. 0 times theorem prover too weak. 1338 trivial. 0 not checked. [2025-01-08 22:36:47,579 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1294624088] provided 0 perfect and 2 imperfect interpolant sequences [2025-01-08 22:36:47,579 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-01-08 22:36:47,579 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 25, 25] total 71 [2025-01-08 22:36:47,579 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1269716099] [2025-01-08 22:36:47,579 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-01-08 22:36:47,580 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 71 states [2025-01-08 22:36:47,580 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-08 22:36:47,581 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 71 interpolants. [2025-01-08 22:36:47,582 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=2254, Invalid=2716, Unknown=0, NotChecked=0, Total=4970 [2025-01-08 22:36:47,582 INFO L87 Difference]: Start difference. First operand 127 states and 129 transitions. Second operand has 71 states, 71 states have (on average 1.1971830985915493) internal successors, (85), 71 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-08 22:36:47,637 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-08 22:36:47,637 INFO L93 Difference]: Finished difference Result 253 states and 280 transitions. [2025-01-08 22:36:47,638 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2025-01-08 22:36:47,638 INFO L78 Accepts]: Start accepts. Automaton has has 71 states, 71 states have (on average 1.1971830985915493) internal successors, (85), 71 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 126 [2025-01-08 22:36:47,638 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-08 22:36:47,639 INFO L225 Difference]: With dead ends: 253 [2025-01-08 22:36:47,639 INFO L226 Difference]: Without dead ends: 151 [2025-01-08 22:36:47,641 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 275 GetRequests, 206 SyntacticMatches, 0 SemanticMatches, 69 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2045 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=2254, Invalid=2716, Unknown=0, NotChecked=0, Total=4970 [2025-01-08 22:36:47,641 INFO L435 NwaCegarLoop]: 15 mSDtfsCounter, 0 mSDsluCounter, 84 mSDsCounter, 0 mSdLazyCounter, 71 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 99 SdHoareTripleChecker+Invalid, 72 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 71 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-01-08 22:36:47,641 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 99 Invalid, 72 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 71 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-01-08 22:36:47,642 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 151 states. [2025-01-08 22:36:47,647 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 151 to 151. [2025-01-08 22:36:47,648 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 151 states, 150 states have (on average 1.02) internal successors, (153), 150 states have internal predecessors, (153), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-08 22:36:47,648 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 151 states to 151 states and 153 transitions. [2025-01-08 22:36:47,648 INFO L78 Accepts]: Start accepts. Automaton has 151 states and 153 transitions. Word has length 126 [2025-01-08 22:36:47,649 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-08 22:36:47,649 INFO L471 AbstractCegarLoop]: Abstraction has 151 states and 153 transitions. [2025-01-08 22:36:47,649 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 71 states, 71 states have (on average 1.1971830985915493) internal successors, (85), 71 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-08 22:36:47,649 INFO L276 IsEmpty]: Start isEmpty. Operand 151 states and 153 transitions. [2025-01-08 22:36:47,650 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 151 [2025-01-08 22:36:47,650 INFO L210 NwaCegarLoop]: Found error trace [2025-01-08 22:36:47,650 INFO L218 NwaCegarLoop]: trace histogram [46, 30, 30, 30, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-08 22:36:47,663 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2025-01-08 22:36:47,850 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,10 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-08 22:36:47,851 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-01-08 22:36:47,851 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-08 22:36:47,851 INFO L85 PathProgramCache]: Analyzing trace with hash 1893592570, now seen corresponding path program 3 times [2025-01-08 22:36:47,852 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-08 22:36:47,852 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1309521336] [2025-01-08 22:36:47,852 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-01-08 22:36:47,852 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-08 22:36:47,870 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 150 statements into 31 equivalence classes. [2025-01-08 22:36:47,891 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s) and asserted 39 of 150 statements. [2025-01-08 22:36:47,892 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s) [2025-01-08 22:36:47,892 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-08 22:36:48,053 INFO L134 CoverageAnalysis]: Checked inductivity of 2419 backedges. 0 proven. 148 refuted. 0 times theorem prover too weak. 2271 trivial. 0 not checked. [2025-01-08 22:36:48,054 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-08 22:36:48,054 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1309521336] [2025-01-08 22:36:48,054 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1309521336] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-08 22:36:48,054 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [501049075] [2025-01-08 22:36:48,054 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-01-08 22:36:48,054 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-08 22:36:48,054 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-08 22:36:48,059 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-01-08 22:36:48,060 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2025-01-08 22:36:48,136 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 150 statements into 31 equivalence classes. [2025-01-08 22:36:48,175 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s) and asserted 39 of 150 statements. [2025-01-08 22:36:48,175 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s) [2025-01-08 22:36:48,175 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-08 22:36:48,177 INFO L256 TraceCheckSpWp]: Trace formula consists of 201 conjuncts, 22 conjuncts are in the unsatisfiable core [2025-01-08 22:36:48,183 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-08 22:36:48,561 INFO L134 CoverageAnalysis]: Checked inductivity of 2419 backedges. 0 proven. 148 refuted. 0 times theorem prover too weak. 2271 trivial. 0 not checked. [2025-01-08 22:36:48,561 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-01-08 22:36:48,706 INFO L349 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2025-01-08 22:36:48,706 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 22 treesize of output 11 [2025-01-08 22:36:48,715 INFO L134 CoverageAnalysis]: Checked inductivity of 2419 backedges. 28 proven. 120 refuted. 0 times theorem prover too weak. 2271 trivial. 0 not checked. [2025-01-08 22:36:48,715 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [501049075] provided 0 perfect and 2 imperfect interpolant sequences [2025-01-08 22:36:48,715 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-01-08 22:36:48,715 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 10, 9] total 19 [2025-01-08 22:36:48,715 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1071046473] [2025-01-08 22:36:48,715 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-01-08 22:36:48,716 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2025-01-08 22:36:48,716 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-08 22:36:48,716 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2025-01-08 22:36:48,716 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=67, Invalid=275, Unknown=0, NotChecked=0, Total=342 [2025-01-08 22:36:48,716 INFO L87 Difference]: Start difference. First operand 151 states and 153 transitions. Second operand has 19 states, 19 states have (on average 2.736842105263158) internal successors, (52), 19 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-08 22:36:48,792 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-08 22:36:48,792 INFO L93 Difference]: Finished difference Result 160 states and 162 transitions. [2025-01-08 22:36:48,792 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2025-01-08 22:36:48,792 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 2.736842105263158) internal successors, (52), 19 states have internal predecessors, (52), 0 states have call successors, (0), 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 150 [2025-01-08 22:36:48,793 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-08 22:36:48,793 INFO L225 Difference]: With dead ends: 160 [2025-01-08 22:36:48,793 INFO L226 Difference]: Without dead ends: 158 [2025-01-08 22:36:48,794 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 309 GetRequests, 290 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 59 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=87, Invalid=333, Unknown=0, NotChecked=0, Total=420 [2025-01-08 22:36:48,794 INFO L435 NwaCegarLoop]: 13 mSDtfsCounter, 38 mSDsluCounter, 61 mSDsCounter, 0 mSdLazyCounter, 108 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 38 SdHoareTripleChecker+Valid, 74 SdHoareTripleChecker+Invalid, 110 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 108 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-01-08 22:36:48,794 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [38 Valid, 74 Invalid, 110 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 108 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-01-08 22:36:48,795 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 158 states. [2025-01-08 22:36:48,802 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 158 to 156. [2025-01-08 22:36:48,803 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 156 states, 155 states have (on average 1.0193548387096774) internal successors, (158), 155 states have internal predecessors, (158), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-08 22:36:48,803 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 156 states to 156 states and 158 transitions. [2025-01-08 22:36:48,804 INFO L78 Accepts]: Start accepts. Automaton has 156 states and 158 transitions. Word has length 150 [2025-01-08 22:36:48,804 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-08 22:36:48,804 INFO L471 AbstractCegarLoop]: Abstraction has 156 states and 158 transitions. [2025-01-08 22:36:48,804 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 2.736842105263158) internal successors, (52), 19 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-08 22:36:48,804 INFO L276 IsEmpty]: Start isEmpty. Operand 156 states and 158 transitions. [2025-01-08 22:36:48,805 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 156 [2025-01-08 22:36:48,805 INFO L210 NwaCegarLoop]: Found error trace [2025-01-08 22:36:48,806 INFO L218 NwaCegarLoop]: trace histogram [46, 30, 30, 30, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2025-01-08 22:36:48,812 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2025-01-08 22:36:49,010 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2025-01-08 22:36:49,010 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-01-08 22:36:49,010 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-08 22:36:49,010 INFO L85 PathProgramCache]: Analyzing trace with hash -1142298985, now seen corresponding path program 4 times [2025-01-08 22:36:49,010 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-08 22:36:49,010 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1900945742] [2025-01-08 22:36:49,010 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-01-08 22:36:49,011 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-08 22:36:49,033 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 155 statements into 2 equivalence classes. [2025-01-08 22:36:49,049 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) and asserted 155 of 155 statements. [2025-01-08 22:36:49,049 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) [2025-01-08 22:36:49,049 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-08 22:36:49,924 INFO L134 CoverageAnalysis]: Checked inductivity of 2427 backedges. 0 proven. 1337 refuted. 0 times theorem prover too weak. 1090 trivial. 0 not checked. [2025-01-08 22:36:49,924 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-08 22:36:49,925 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1900945742] [2025-01-08 22:36:49,925 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1900945742] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-08 22:36:49,925 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1669009417] [2025-01-08 22:36:49,925 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-01-08 22:36:49,925 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-08 22:36:49,925 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-08 22:36:49,928 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-01-08 22:36:49,929 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2025-01-08 22:36:50,012 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 155 statements into 2 equivalence classes. [2025-01-08 22:36:50,070 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) and asserted 155 of 155 statements. [2025-01-08 22:36:50,071 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) [2025-01-08 22:36:50,071 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-08 22:36:50,073 INFO L256 TraceCheckSpWp]: Trace formula consists of 713 conjuncts, 32 conjuncts are in the unsatisfiable core [2025-01-08 22:36:50,075 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-08 22:36:50,162 INFO L134 CoverageAnalysis]: Checked inductivity of 2427 backedges. 0 proven. 1335 refuted. 0 times theorem prover too weak. 1092 trivial. 0 not checked. [2025-01-08 22:36:50,162 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-01-08 22:36:51,179 INFO L134 CoverageAnalysis]: Checked inductivity of 2427 backedges. 0 proven. 1335 refuted. 0 times theorem prover too weak. 1092 trivial. 0 not checked. [2025-01-08 22:36:51,180 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1669009417] provided 0 perfect and 2 imperfect interpolant sequences [2025-01-08 22:36:51,180 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-01-08 22:36:51,180 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [34, 33, 33] total 66 [2025-01-08 22:36:51,180 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1974295978] [2025-01-08 22:36:51,180 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-01-08 22:36:51,180 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 66 states [2025-01-08 22:36:51,180 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-08 22:36:51,181 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 66 interpolants. [2025-01-08 22:36:51,182 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=2082, Invalid=2208, Unknown=0, NotChecked=0, Total=4290 [2025-01-08 22:36:51,182 INFO L87 Difference]: Start difference. First operand 156 states and 158 transitions. Second operand has 66 states, 66 states have (on average 3.0454545454545454) internal successors, (201), 66 states have internal predecessors, (201), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-08 22:36:51,898 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-08 22:36:51,899 INFO L93 Difference]: Finished difference Result 683 states and 717 transitions. [2025-01-08 22:36:51,899 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 64 states. [2025-01-08 22:36:51,899 INFO L78 Accepts]: Start accepts. Automaton has has 66 states, 66 states have (on average 3.0454545454545454) internal successors, (201), 66 states have internal predecessors, (201), 0 states have call successors, (0), 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 155 [2025-01-08 22:36:51,900 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-08 22:36:51,902 INFO L225 Difference]: With dead ends: 683 [2025-01-08 22:36:51,902 INFO L226 Difference]: Without dead ends: 668 [2025-01-08 22:36:51,903 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 343 GetRequests, 279 SyntacticMatches, 0 SemanticMatches, 64 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 150 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=2082, Invalid=2208, Unknown=0, NotChecked=0, Total=4290 [2025-01-08 22:36:51,903 INFO L435 NwaCegarLoop]: 11 mSDtfsCounter, 1116 mSDsluCounter, 335 mSDsCounter, 0 mSdLazyCounter, 332 mSolverCounterSat, 192 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1116 SdHoareTripleChecker+Valid, 346 SdHoareTripleChecker+Invalid, 524 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 192 IncrementalHoareTripleChecker+Valid, 332 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2025-01-08 22:36:51,903 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1116 Valid, 346 Invalid, 524 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [192 Valid, 332 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2025-01-08 22:36:51,904 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 668 states. [2025-01-08 22:36:51,911 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 668 to 252. [2025-01-08 22:36:51,912 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 252 states, 251 states have (on average 1.0119521912350598) internal successors, (254), 251 states have internal predecessors, (254), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-08 22:36:51,912 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 252 states to 252 states and 254 transitions. [2025-01-08 22:36:51,913 INFO L78 Accepts]: Start accepts. Automaton has 252 states and 254 transitions. Word has length 155 [2025-01-08 22:36:51,913 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-08 22:36:51,913 INFO L471 AbstractCegarLoop]: Abstraction has 252 states and 254 transitions. [2025-01-08 22:36:51,913 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 66 states, 66 states have (on average 3.0454545454545454) internal successors, (201), 66 states have internal predecessors, (201), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-08 22:36:51,913 INFO L276 IsEmpty]: Start isEmpty. Operand 252 states and 254 transitions. [2025-01-08 22:36:51,914 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 252 [2025-01-08 22:36:51,915 INFO L210 NwaCegarLoop]: Found error trace [2025-01-08 22:36:51,915 INFO L218 NwaCegarLoop]: trace histogram [62, 62, 62, 46, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2025-01-08 22:36:51,922 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2025-01-08 22:36:52,119 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2025-01-08 22:36:52,119 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-01-08 22:36:52,120 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-08 22:36:52,120 INFO L85 PathProgramCache]: Analyzing trace with hash -576929129, now seen corresponding path program 5 times [2025-01-08 22:36:52,120 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-08 22:36:52,120 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2102333986] [2025-01-08 22:36:52,120 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2025-01-08 22:36:52,120 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-08 22:36:52,141 INFO L108 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 partitioned 251 statements into 63 equivalence classes. [2025-01-08 22:36:52,372 INFO L111 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 63 check-sat command(s) and asserted 251 of 251 statements. [2025-01-08 22:36:52,372 INFO L114 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 63 check-sat command(s) [2025-01-08 22:36:52,373 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-08 22:36:54,570 INFO L134 CoverageAnalysis]: Checked inductivity of 6827 backedges. 0 proven. 5735 refuted. 0 times theorem prover too weak. 1092 trivial. 0 not checked. [2025-01-08 22:36:54,570 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-08 22:36:54,571 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2102333986] [2025-01-08 22:36:54,571 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2102333986] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-08 22:36:54,571 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [387415500] [2025-01-08 22:36:54,571 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2025-01-08 22:36:54,571 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-08 22:36:54,571 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-08 22:36:54,573 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-01-08 22:36:54,574 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2025-01-08 22:36:54,697 INFO L108 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 partitioned 251 statements into 63 equivalence classes. [2025-01-08 22:37:06,363 INFO L111 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 63 check-sat command(s) and asserted 251 of 251 statements. [2025-01-08 22:37:06,364 INFO L114 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 63 check-sat command(s) [2025-01-08 22:37:06,364 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-08 22:37:06,381 INFO L256 TraceCheckSpWp]: Trace formula consists of 937 conjuncts, 64 conjuncts are in the unsatisfiable core [2025-01-08 22:37:06,384 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-08 22:37:06,664 INFO L134 CoverageAnalysis]: Checked inductivity of 6827 backedges. 0 proven. 5735 refuted. 0 times theorem prover too weak. 1092 trivial. 0 not checked. [2025-01-08 22:37:06,664 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-01-08 22:37:10,419 INFO L134 CoverageAnalysis]: Checked inductivity of 6827 backedges. 0 proven. 5735 refuted. 0 times theorem prover too weak. 1092 trivial. 0 not checked. [2025-01-08 22:37:10,419 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [387415500] provided 0 perfect and 2 imperfect interpolant sequences [2025-01-08 22:37:10,419 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-01-08 22:37:10,419 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [65, 65, 65] total 128 [2025-01-08 22:37:10,419 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1713906608] [2025-01-08 22:37:10,419 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-01-08 22:37:10,424 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 128 states [2025-01-08 22:37:10,424 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-08 22:37:10,426 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 128 interpolants. [2025-01-08 22:37:10,431 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=8128, Invalid=8128, Unknown=0, NotChecked=0, Total=16256 [2025-01-08 22:37:10,432 INFO L87 Difference]: Start difference. First operand 252 states and 254 transitions. Second operand has 128 states, 128 states have (on average 3.0234375) internal successors, (387), 128 states have internal predecessors, (387), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-08 22:37:15,906 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-08 22:37:15,906 INFO L93 Difference]: Finished difference Result 1323 states and 1389 transitions. [2025-01-08 22:37:15,906 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 128 states. [2025-01-08 22:37:15,907 INFO L78 Accepts]: Start accepts. Automaton has has 128 states, 128 states have (on average 3.0234375) internal successors, (387), 128 states have internal predecessors, (387), 0 states have call successors, (0), 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 251 [2025-01-08 22:37:15,907 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-08 22:37:15,910 INFO L225 Difference]: With dead ends: 1323 [2025-01-08 22:37:15,910 INFO L226 Difference]: Without dead ends: 1308 [2025-01-08 22:37:15,913 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 565 GetRequests, 439 SyntacticMatches, 0 SemanticMatches, 126 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 4.8s TimeCoverageRelationStatistics Valid=8128, Invalid=8128, Unknown=0, NotChecked=0, Total=16256 [2025-01-08 22:37:15,913 INFO L435 NwaCegarLoop]: 11 mSDtfsCounter, 2792 mSDsluCounter, 650 mSDsCounter, 0 mSdLazyCounter, 641 mSolverCounterSat, 470 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2792 SdHoareTripleChecker+Valid, 661 SdHoareTripleChecker+Invalid, 1111 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 470 IncrementalHoareTripleChecker+Valid, 641 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2025-01-08 22:37:15,914 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [2792 Valid, 661 Invalid, 1111 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [470 Valid, 641 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2025-01-08 22:37:15,914 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1308 states. [2025-01-08 22:37:15,928 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1308 to 444. [2025-01-08 22:37:15,929 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 444 states, 443 states have (on average 1.0067720090293453) internal successors, (446), 443 states have internal predecessors, (446), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-08 22:37:15,929 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 444 states to 444 states and 446 transitions. [2025-01-08 22:37:15,930 INFO L78 Accepts]: Start accepts. Automaton has 444 states and 446 transitions. Word has length 251 [2025-01-08 22:37:15,930 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-08 22:37:15,930 INFO L471 AbstractCegarLoop]: Abstraction has 444 states and 446 transitions. [2025-01-08 22:37:15,930 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 128 states, 128 states have (on average 3.0234375) internal successors, (387), 128 states have internal predecessors, (387), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-08 22:37:15,930 INFO L276 IsEmpty]: Start isEmpty. Operand 444 states and 446 transitions. [2025-01-08 22:37:15,933 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 444 [2025-01-08 22:37:15,933 INFO L210 NwaCegarLoop]: Found error trace [2025-01-08 22:37:15,933 INFO L218 NwaCegarLoop]: trace histogram [126, 126, 126, 46, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2025-01-08 22:37:15,953 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Ended with exit code 0 [2025-01-08 22:37:16,138 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14,13 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-08 22:37:16,138 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-01-08 22:37:16,139 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-08 22:37:16,139 INFO L85 PathProgramCache]: Analyzing trace with hash -1424852329, now seen corresponding path program 6 times [2025-01-08 22:37:16,139 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-08 22:37:16,139 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1930161607] [2025-01-08 22:37:16,139 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2025-01-08 22:37:16,139 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-08 22:37:16,164 INFO L108 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE partitioned 443 statements into 127 equivalence classes. [2025-01-08 22:37:16,196 INFO L111 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 17 check-sat command(s) and asserted 83 of 443 statements. [2025-01-08 22:37:16,197 INFO L114 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 17 check-sat command(s) [2025-01-08 22:37:16,197 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-08 22:37:16,429 INFO L134 CoverageAnalysis]: Checked inductivity of 24843 backedges. 0 proven. 1007 refuted. 0 times theorem prover too weak. 23836 trivial. 0 not checked. [2025-01-08 22:37:16,429 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-08 22:37:16,429 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1930161607] [2025-01-08 22:37:16,430 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1930161607] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-08 22:37:16,430 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [933898611] [2025-01-08 22:37:16,430 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2025-01-08 22:37:16,430 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-08 22:37:16,430 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-08 22:37:16,434 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-01-08 22:37:16,436 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2025-01-08 22:37:16,564 INFO L108 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE partitioned 443 statements into 127 equivalence classes. [2025-01-08 22:37:16,918 INFO L111 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 17 check-sat command(s) and asserted 83 of 443 statements. [2025-01-08 22:37:16,918 INFO L114 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 17 check-sat command(s) [2025-01-08 22:37:16,918 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-08 22:37:16,921 INFO L256 TraceCheckSpWp]: Trace formula consists of 345 conjuncts, 26 conjuncts are in the unsatisfiable core [2025-01-08 22:37:16,925 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-08 22:37:17,919 INFO L134 CoverageAnalysis]: Checked inductivity of 24843 backedges. 0 proven. 1007 refuted. 0 times theorem prover too weak. 23836 trivial. 0 not checked. [2025-01-08 22:37:17,919 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-01-08 22:37:18,380 INFO L349 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2025-01-08 22:37:18,381 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 22 treesize of output 11 [2025-01-08 22:37:18,391 INFO L134 CoverageAnalysis]: Checked inductivity of 24843 backedges. 123 proven. 884 refuted. 0 times theorem prover too weak. 23836 trivial. 0 not checked. [2025-01-08 22:37:18,391 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [933898611] provided 0 perfect and 2 imperfect interpolant sequences [2025-01-08 22:37:18,391 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-01-08 22:37:18,391 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 12, 11] total 23 [2025-01-08 22:37:18,391 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1335872842] [2025-01-08 22:37:18,391 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-01-08 22:37:18,392 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2025-01-08 22:37:18,392 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-08 22:37:18,392 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2025-01-08 22:37:18,393 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=84, Invalid=422, Unknown=0, NotChecked=0, Total=506 [2025-01-08 22:37:18,393 INFO L87 Difference]: Start difference. First operand 444 states and 446 transitions. Second operand has 23 states, 23 states have (on average 2.9565217391304346) internal successors, (68), 23 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-08 22:37:18,534 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-08 22:37:18,535 INFO L93 Difference]: Finished difference Result 453 states and 455 transitions. [2025-01-08 22:37:18,535 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2025-01-08 22:37:18,535 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 23 states have (on average 2.9565217391304346) internal successors, (68), 23 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 443 [2025-01-08 22:37:18,536 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-08 22:37:18,537 INFO L225 Difference]: With dead ends: 453 [2025-01-08 22:37:18,537 INFO L226 Difference]: Without dead ends: 451 [2025-01-08 22:37:18,538 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 897 GetRequests, 874 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 84 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=104, Invalid=496, Unknown=0, NotChecked=0, Total=600 [2025-01-08 22:37:18,538 INFO L435 NwaCegarLoop]: 16 mSDtfsCounter, 31 mSDsluCounter, 135 mSDsCounter, 0 mSdLazyCounter, 259 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 31 SdHoareTripleChecker+Valid, 151 SdHoareTripleChecker+Invalid, 260 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 259 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-01-08 22:37:18,538 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [31 Valid, 151 Invalid, 260 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 259 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-01-08 22:37:18,539 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 451 states. [2025-01-08 22:37:18,565 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 451 to 449. [2025-01-08 22:37:18,567 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 449 states, 448 states have (on average 1.0066964285714286) internal successors, (451), 448 states have internal predecessors, (451), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-08 22:37:18,570 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 449 states to 449 states and 451 transitions. [2025-01-08 22:37:18,570 INFO L78 Accepts]: Start accepts. Automaton has 449 states and 451 transitions. Word has length 443 [2025-01-08 22:37:18,571 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-08 22:37:18,571 INFO L471 AbstractCegarLoop]: Abstraction has 449 states and 451 transitions. [2025-01-08 22:37:18,571 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 2.9565217391304346) internal successors, (68), 23 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-08 22:37:18,571 INFO L276 IsEmpty]: Start isEmpty. Operand 449 states and 451 transitions. [2025-01-08 22:37:18,576 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 449 [2025-01-08 22:37:18,576 INFO L210 NwaCegarLoop]: Found error trace [2025-01-08 22:37:18,577 INFO L218 NwaCegarLoop]: trace histogram [126, 126, 126, 46, 4, 4, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1] [2025-01-08 22:37:18,587 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Ended with exit code 0 [2025-01-08 22:37:18,777 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15,14 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-08 22:37:18,777 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-01-08 22:37:18,778 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-08 22:37:18,778 INFO L85 PathProgramCache]: Analyzing trace with hash -1265257446, now seen corresponding path program 7 times [2025-01-08 22:37:18,778 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-08 22:37:18,778 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [158342033] [2025-01-08 22:37:18,778 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2025-01-08 22:37:18,778 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-08 22:37:18,810 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 448 statements into 1 equivalence classes. [2025-01-08 22:37:18,843 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 448 of 448 statements. [2025-01-08 22:37:18,843 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-08 22:37:18,843 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-08 22:37:20,692 INFO L134 CoverageAnalysis]: Checked inductivity of 24856 backedges. 0 proven. 1081 refuted. 0 times theorem prover too weak. 23775 trivial. 0 not checked. [2025-01-08 22:37:20,692 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-08 22:37:20,692 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [158342033] [2025-01-08 22:37:20,692 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [158342033] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-08 22:37:20,692 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1487168638] [2025-01-08 22:37:20,692 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2025-01-08 22:37:20,692 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-08 22:37:20,693 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-08 22:37:20,696 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-01-08 22:37:20,697 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2025-01-08 22:37:20,832 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 448 statements into 1 equivalence classes. [2025-01-08 22:37:20,961 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 448 of 448 statements. [2025-01-08 22:37:20,961 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-08 22:37:20,961 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-08 22:37:20,965 INFO L256 TraceCheckSpWp]: Trace formula consists of 1398 conjuncts, 50 conjuncts are in the unsatisfiable core [2025-01-08 22:37:20,970 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-08 22:37:23,010 INFO L134 CoverageAnalysis]: Checked inductivity of 24856 backedges. 0 proven. 1081 refuted. 0 times theorem prover too weak. 23775 trivial. 0 not checked. [2025-01-08 22:37:23,010 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-01-08 22:37:27,075 INFO L134 CoverageAnalysis]: Checked inductivity of 24856 backedges. 0 proven. 1081 refuted. 0 times theorem prover too weak. 23775 trivial. 0 not checked. [2025-01-08 22:37:27,075 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1487168638] provided 0 perfect and 2 imperfect interpolant sequences [2025-01-08 22:37:27,075 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-01-08 22:37:27,075 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [49, 49, 49] total 143 [2025-01-08 22:37:27,076 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1570953424] [2025-01-08 22:37:27,076 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-01-08 22:37:27,076 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 143 states [2025-01-08 22:37:27,076 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-08 22:37:27,078 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 143 interpolants. [2025-01-08 22:37:27,081 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9072, Invalid=11234, Unknown=0, NotChecked=0, Total=20306 [2025-01-08 22:37:27,081 INFO L87 Difference]: Start difference. First operand 449 states and 451 transitions. Second operand has 143 states, 143 states have (on average 1.097902097902098) internal successors, (157), 143 states have internal predecessors, (157), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-08 22:37:27,207 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-08 22:37:27,208 INFO L93 Difference]: Finished difference Result 897 states and 948 transitions. [2025-01-08 22:37:27,208 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 96 states. [2025-01-08 22:37:27,208 INFO L78 Accepts]: Start accepts. Automaton has has 143 states, 143 states have (on average 1.097902097902098) internal successors, (157), 143 states have internal predecessors, (157), 0 states have call successors, (0), 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 448 [2025-01-08 22:37:27,209 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-08 22:37:27,210 INFO L225 Difference]: With dead ends: 897 [2025-01-08 22:37:27,210 INFO L226 Difference]: Without dead ends: 497 [2025-01-08 22:37:27,212 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 943 GetRequests, 802 SyntacticMatches, 0 SemanticMatches, 141 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1035 ImplicationChecksByTransitivity, 6.8s TimeCoverageRelationStatistics Valid=9072, Invalid=11234, Unknown=0, NotChecked=0, Total=20306 [2025-01-08 22:37:27,212 INFO L435 NwaCegarLoop]: 15 mSDtfsCounter, 0 mSDsluCounter, 96 mSDsCounter, 0 mSdLazyCounter, 138 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 111 SdHoareTripleChecker+Invalid, 139 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 138 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-01-08 22:37:27,212 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 111 Invalid, 139 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 138 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-01-08 22:37:27,213 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 497 states. [2025-01-08 22:37:27,228 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 497 to 497. [2025-01-08 22:37:27,228 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 497 states, 496 states have (on average 1.0060483870967742) internal successors, (499), 496 states have internal predecessors, (499), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-08 22:37:27,229 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 497 states to 497 states and 499 transitions. [2025-01-08 22:37:27,229 INFO L78 Accepts]: Start accepts. Automaton has 497 states and 499 transitions. Word has length 448 [2025-01-08 22:37:27,230 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-08 22:37:27,230 INFO L471 AbstractCegarLoop]: Abstraction has 497 states and 499 transitions. [2025-01-08 22:37:27,230 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 143 states, 143 states have (on average 1.097902097902098) internal successors, (157), 143 states have internal predecessors, (157), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-08 22:37:27,230 INFO L276 IsEmpty]: Start isEmpty. Operand 497 states and 499 transitions. [2025-01-08 22:37:27,232 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 497 [2025-01-08 22:37:27,232 INFO L210 NwaCegarLoop]: Found error trace [2025-01-08 22:37:27,232 INFO L218 NwaCegarLoop]: trace histogram [126, 126, 126, 94, 4, 4, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1] [2025-01-08 22:37:27,243 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Ended with exit code 0 [2025-01-08 22:37:27,432 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2025-01-08 22:37:27,433 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-01-08 22:37:27,433 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-08 22:37:27,433 INFO L85 PathProgramCache]: Analyzing trace with hash -985377766, now seen corresponding path program 8 times [2025-01-08 22:37:27,433 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-08 22:37:27,433 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [100280566] [2025-01-08 22:37:27,433 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-01-08 22:37:27,434 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-08 22:37:27,469 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 496 statements into 2 equivalence classes. [2025-01-08 22:37:27,518 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 496 of 496 statements. [2025-01-08 22:37:27,518 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-01-08 22:37:27,518 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-08 22:37:33,357 INFO L134 CoverageAnalysis]: Checked inductivity of 28240 backedges. 0 proven. 4465 refuted. 0 times theorem prover too weak. 23775 trivial. 0 not checked. [2025-01-08 22:37:33,357 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-08 22:37:33,357 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [100280566] [2025-01-08 22:37:33,357 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [100280566] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-08 22:37:33,357 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1606540509] [2025-01-08 22:37:33,357 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-01-08 22:37:33,357 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-08 22:37:33,358 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-08 22:37:33,359 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-01-08 22:37:33,361 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2025-01-08 22:37:33,531 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 496 statements into 2 equivalence classes. [2025-01-08 22:37:33,676 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 496 of 496 statements. [2025-01-08 22:37:33,676 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-01-08 22:37:33,676 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-08 22:37:33,688 INFO L256 TraceCheckSpWp]: Trace formula consists of 1830 conjuncts, 98 conjuncts are in the unsatisfiable core [2025-01-08 22:37:33,693 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-08 22:37:37,226 INFO L134 CoverageAnalysis]: Checked inductivity of 28240 backedges. 0 proven. 4465 refuted. 0 times theorem prover too weak. 23775 trivial. 0 not checked. [2025-01-08 22:37:37,227 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-01-08 22:37:46,608 INFO L134 CoverageAnalysis]: Checked inductivity of 28240 backedges. 0 proven. 4465 refuted. 0 times theorem prover too weak. 23775 trivial. 0 not checked. [2025-01-08 22:37:46,608 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1606540509] provided 0 perfect and 2 imperfect interpolant sequences [2025-01-08 22:37:46,608 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-01-08 22:37:46,608 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [97, 97, 97] total 287 [2025-01-08 22:37:46,608 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [193086714] [2025-01-08 22:37:46,609 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-01-08 22:37:46,609 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 287 states [2025-01-08 22:37:46,609 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-08 22:37:46,618 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 287 interpolants. [2025-01-08 22:37:46,625 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=36670, Invalid=45412, Unknown=0, NotChecked=0, Total=82082 [2025-01-08 22:37:46,626 INFO L87 Difference]: Start difference. First operand 497 states and 499 transitions. Second operand has 287 states, 287 states have (on average 1.048780487804878) internal successors, (301), 287 states have internal predecessors, (301), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-08 22:37:46,994 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-08 22:37:46,995 INFO L93 Difference]: Finished difference Result 993 states and 1092 transitions. [2025-01-08 22:37:46,995 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 192 states. [2025-01-08 22:37:46,995 INFO L78 Accepts]: Start accepts. Automaton has has 287 states, 287 states have (on average 1.048780487804878) internal successors, (301), 287 states have internal predecessors, (301), 0 states have call successors, (0), 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 496 [2025-01-08 22:37:46,995 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-08 22:37:46,997 INFO L225 Difference]: With dead ends: 993 [2025-01-08 22:37:46,997 INFO L226 Difference]: Without dead ends: 593 [2025-01-08 22:37:47,000 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 1087 GetRequests, 802 SyntacticMatches, 0 SemanticMatches, 285 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 35813 ImplicationChecksByTransitivity, 15.7s TimeCoverageRelationStatistics Valid=36670, Invalid=45412, Unknown=0, NotChecked=0, Total=82082 [2025-01-08 22:37:47,001 INFO L435 NwaCegarLoop]: 15 mSDtfsCounter, 0 mSDsluCounter, 72 mSDsCounter, 0 mSdLazyCounter, 253 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 87 SdHoareTripleChecker+Invalid, 254 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 253 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2025-01-08 22:37:47,001 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 87 Invalid, 254 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 253 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2025-01-08 22:37:47,002 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 593 states. [2025-01-08 22:37:47,023 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 593 to 593. [2025-01-08 22:37:47,024 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 593 states, 592 states have (on average 1.0050675675675675) internal successors, (595), 592 states have internal predecessors, (595), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-08 22:37:47,025 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 593 states to 593 states and 595 transitions. [2025-01-08 22:37:47,026 INFO L78 Accepts]: Start accepts. Automaton has 593 states and 595 transitions. Word has length 496 [2025-01-08 22:37:47,027 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-08 22:37:47,027 INFO L471 AbstractCegarLoop]: Abstraction has 593 states and 595 transitions. [2025-01-08 22:37:47,027 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 287 states, 287 states have (on average 1.048780487804878) internal successors, (301), 287 states have internal predecessors, (301), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-08 22:37:47,027 INFO L276 IsEmpty]: Start isEmpty. Operand 593 states and 595 transitions. [2025-01-08 22:37:47,029 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 593 [2025-01-08 22:37:47,029 INFO L210 NwaCegarLoop]: Found error trace [2025-01-08 22:37:47,030 INFO L218 NwaCegarLoop]: trace histogram [190, 126, 126, 126, 4, 4, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1] [2025-01-08 22:37:47,038 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2025-01-08 22:37:47,234 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2025-01-08 22:37:47,234 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-01-08 22:37:47,235 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-08 22:37:47,235 INFO L85 PathProgramCache]: Analyzing trace with hash 1801557018, now seen corresponding path program 9 times [2025-01-08 22:37:47,235 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-08 22:37:47,235 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2074517058] [2025-01-08 22:37:47,235 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-01-08 22:37:47,235 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-08 22:37:47,294 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 592 statements into 127 equivalence classes. [2025-01-08 22:37:47,324 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 12 check-sat command(s) and asserted 79 of 592 statements. [2025-01-08 22:37:47,325 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 12 check-sat command(s) [2025-01-08 22:37:47,325 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-08 22:37:47,517 INFO L134 CoverageAnalysis]: Checked inductivity of 41920 backedges. 0 proven. 1388 refuted. 0 times theorem prover too weak. 40532 trivial. 0 not checked. [2025-01-08 22:37:47,517 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-08 22:37:47,517 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2074517058] [2025-01-08 22:37:47,517 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2074517058] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-08 22:37:47,517 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1457934272] [2025-01-08 22:37:47,517 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-01-08 22:37:47,517 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-08 22:37:47,517 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-08 22:37:47,519 INFO L229 MonitoredProcess]: Starting monitored process 17 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-01-08 22:37:47,521 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2025-01-08 22:37:47,767 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 592 statements into 127 equivalence classes. [2025-01-08 22:37:48,786 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 12 check-sat command(s) and asserted 79 of 592 statements. [2025-01-08 22:37:48,786 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 12 check-sat command(s) [2025-01-08 22:37:48,786 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-08 22:37:48,790 INFO L256 TraceCheckSpWp]: Trace formula consists of 377 conjuncts, 27 conjuncts are in the unsatisfiable core [2025-01-08 22:37:48,796 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-08 22:37:49,907 INFO L134 CoverageAnalysis]: Checked inductivity of 41920 backedges. 0 proven. 1388 refuted. 0 times theorem prover too weak. 40532 trivial. 0 not checked. [2025-01-08 22:37:49,908 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-01-08 22:37:50,321 INFO L349 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2025-01-08 22:37:50,321 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 22 treesize of output 11 [2025-01-08 22:37:50,332 INFO L134 CoverageAnalysis]: Checked inductivity of 41920 backedges. 122 proven. 1266 refuted. 0 times theorem prover too weak. 40532 trivial. 0 not checked. [2025-01-08 22:37:50,332 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1457934272] provided 0 perfect and 2 imperfect interpolant sequences [2025-01-08 22:37:50,332 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-01-08 22:37:50,332 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 14, 13] total 27 [2025-01-08 22:37:50,332 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2047887956] [2025-01-08 22:37:50,332 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-01-08 22:37:50,333 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2025-01-08 22:37:50,333 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-08 22:37:50,333 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2025-01-08 22:37:50,333 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=101, Invalid=601, Unknown=0, NotChecked=0, Total=702 [2025-01-08 22:37:50,333 INFO L87 Difference]: Start difference. First operand 593 states and 595 transitions. Second operand has 27 states, 27 states have (on average 3.1481481481481484) internal successors, (85), 27 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-08 22:37:50,484 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-08 22:37:50,485 INFO L93 Difference]: Finished difference Result 602 states and 604 transitions. [2025-01-08 22:37:50,485 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2025-01-08 22:37:50,485 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 27 states have (on average 3.1481481481481484) internal successors, (85), 27 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 592 [2025-01-08 22:37:50,486 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-08 22:37:50,487 INFO L225 Difference]: With dead ends: 602 [2025-01-08 22:37:50,488 INFO L226 Difference]: Without dead ends: 600 [2025-01-08 22:37:50,488 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 1197 GetRequests, 1169 SyntacticMatches, 1 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 124 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=121, Invalid=691, Unknown=0, NotChecked=0, Total=812 [2025-01-08 22:37:50,488 INFO L435 NwaCegarLoop]: 19 mSDtfsCounter, 49 mSDsluCounter, 164 mSDsCounter, 0 mSdLazyCounter, 330 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 49 SdHoareTripleChecker+Valid, 183 SdHoareTripleChecker+Invalid, 332 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 330 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-01-08 22:37:50,488 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [49 Valid, 183 Invalid, 332 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 330 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-01-08 22:37:50,489 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 600 states. [2025-01-08 22:37:50,510 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 600 to 598. [2025-01-08 22:37:50,511 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 598 states, 597 states have (on average 1.0050251256281406) internal successors, (600), 597 states have internal predecessors, (600), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-08 22:37:50,511 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 598 states to 598 states and 600 transitions. [2025-01-08 22:37:50,512 INFO L78 Accepts]: Start accepts. Automaton has 598 states and 600 transitions. Word has length 592 [2025-01-08 22:37:50,512 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-08 22:37:50,512 INFO L471 AbstractCegarLoop]: Abstraction has 598 states and 600 transitions. [2025-01-08 22:37:50,513 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 3.1481481481481484) internal successors, (85), 27 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-08 22:37:50,513 INFO L276 IsEmpty]: Start isEmpty. Operand 598 states and 600 transitions. [2025-01-08 22:37:50,515 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 598 [2025-01-08 22:37:50,515 INFO L210 NwaCegarLoop]: Found error trace [2025-01-08 22:37:50,515 INFO L218 NwaCegarLoop]: trace histogram [190, 126, 126, 126, 5, 5, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1] [2025-01-08 22:37:50,525 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Forceful destruction successful, exit code 0 [2025-01-08 22:37:50,716 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,17 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-08 22:37:50,716 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-01-08 22:37:50,717 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-08 22:37:50,717 INFO L85 PathProgramCache]: Analyzing trace with hash 1448678519, now seen corresponding path program 10 times [2025-01-08 22:37:50,717 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-08 22:37:50,717 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [886549254] [2025-01-08 22:37:50,717 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-01-08 22:37:50,717 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-08 22:37:50,772 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 597 statements into 2 equivalence classes. [2025-01-08 22:37:50,819 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) and asserted 597 of 597 statements. [2025-01-08 22:37:50,820 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) [2025-01-08 22:37:50,820 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-08 22:38:01,049 INFO L134 CoverageAnalysis]: Checked inductivity of 41938 backedges. 0 proven. 23755 refuted. 0 times theorem prover too weak. 18183 trivial. 0 not checked. [2025-01-08 22:38:01,049 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-08 22:38:01,049 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [886549254] [2025-01-08 22:38:01,049 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [886549254] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-08 22:38:01,049 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [500548498] [2025-01-08 22:38:01,049 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-01-08 22:38:01,050 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-08 22:38:01,050 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-08 22:38:01,051 INFO L229 MonitoredProcess]: Starting monitored process 18 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-01-08 22:38:01,052 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2025-01-08 22:38:01,349 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 597 statements into 2 equivalence classes. [2025-01-08 22:38:01,574 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) and asserted 597 of 597 statements. [2025-01-08 22:38:01,574 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) [2025-01-08 22:38:01,574 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-08 22:38:01,585 INFO L256 TraceCheckSpWp]: Trace formula consists of 2707 conjuncts, 128 conjuncts are in the unsatisfiable core [2025-01-08 22:38:01,591 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-08 22:38:01,894 INFO L134 CoverageAnalysis]: Checked inductivity of 41938 backedges. 0 proven. 23751 refuted. 0 times theorem prover too weak. 18187 trivial. 0 not checked. [2025-01-08 22:38:01,895 INFO L312 TraceCheckSpWp]: Computing backward predicates...