./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/array-patterns/array13_pattern.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 48c9605d 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-patterns/array13_pattern.c -s /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 78699f7813351c3df7f7fcab3bf98fffd7a92c5cc679034a9d139e9169232d7e --- Real Ultimate output --- This is Ultimate 0.3.0-?-48c9605-m [2025-02-07 17:11:28,795 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-02-07 17:11:28,847 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2025-02-07 17:11:28,852 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-02-07 17:11:28,852 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-02-07 17:11:28,864 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-02-07 17:11:28,864 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-02-07 17:11:28,864 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-02-07 17:11:28,865 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-02-07 17:11:28,865 INFO L153 SettingsManager]: * Use memory slicer=true [2025-02-07 17:11:28,865 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-02-07 17:11:28,865 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-02-07 17:11:28,865 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-02-07 17:11:28,865 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-02-07 17:11:28,865 INFO L153 SettingsManager]: * Use SBE=true [2025-02-07 17:11:28,865 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-02-07 17:11:28,865 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2025-02-07 17:11:28,865 INFO L153 SettingsManager]: * sizeof long=4 [2025-02-07 17:11:28,865 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-02-07 17:11:28,865 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-02-07 17:11:28,865 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-02-07 17:11:28,865 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2025-02-07 17:11:28,865 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-02-07 17:11:28,866 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2025-02-07 17:11:28,866 INFO L153 SettingsManager]: * sizeof long double=12 [2025-02-07 17:11:28,866 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2025-02-07 17:11:28,866 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-02-07 17:11:28,866 INFO L153 SettingsManager]: * Use constant arrays=true [2025-02-07 17:11:28,866 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-02-07 17:11:28,866 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-02-07 17:11:28,866 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-02-07 17:11:28,866 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-02-07 17:11:28,866 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-02-07 17:11:28,866 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-02-07 17:11:28,867 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-02-07 17:11:28,867 INFO L153 SettingsManager]: * Compute procedure contracts=false [2025-02-07 17:11:28,867 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2025-02-07 17:11:28,867 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-02-07 17:11:28,867 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2025-02-07 17:11:28,867 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2025-02-07 17:11:28,867 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-02-07 17:11:28,867 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-02-07 17:11:28,867 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-02-07 17:11:28,867 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 -> 78699f7813351c3df7f7fcab3bf98fffd7a92c5cc679034a9d139e9169232d7e [2025-02-07 17:11:29,065 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-02-07 17:11:29,072 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-02-07 17:11:29,073 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-02-07 17:11:29,074 INFO L270 PluginConnector]: Initializing CDTParser... [2025-02-07 17:11:29,074 INFO L274 PluginConnector]: CDTParser initialized [2025-02-07 17:11:29,075 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/array-patterns/array13_pattern.c [2025-02-07 17:11:30,190 INFO L533 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/d2fe52b41/ba9994037b304bb7982e4d59a8c0c475/FLAG67222ad6b [2025-02-07 17:11:30,471 INFO L384 CDTParser]: Found 1 translation units. [2025-02-07 17:11:30,472 INFO L180 CDTParser]: Scanning /storage/repos/ultimate-jdk21/releaseScripts/default/sv-benchmarks/c/array-patterns/array13_pattern.c [2025-02-07 17:11:30,478 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/d2fe52b41/ba9994037b304bb7982e4d59a8c0c475/FLAG67222ad6b [2025-02-07 17:11:30,491 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/d2fe52b41/ba9994037b304bb7982e4d59a8c0c475 [2025-02-07 17:11:30,493 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-02-07 17:11:30,494 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2025-02-07 17:11:30,497 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-02-07 17:11:30,498 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-02-07 17:11:30,501 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-02-07 17:11:30,502 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.02 05:11:30" (1/1) ... [2025-02-07 17:11:30,504 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@75a3954 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.02 05:11:30, skipping insertion in model container [2025-02-07 17:11:30,504 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.02 05:11:30" (1/1) ... [2025-02-07 17:11:30,516 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-02-07 17:11:30,606 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-patterns/array13_pattern.c[1342,1355] [2025-02-07 17:11:30,626 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-02-07 17:11:30,633 INFO L200 MainTranslator]: Completed pre-run [2025-02-07 17:11:30,639 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-patterns/array13_pattern.c[1342,1355] [2025-02-07 17:11:30,647 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-02-07 17:11:30,662 INFO L204 MainTranslator]: Completed translation [2025-02-07 17:11:30,663 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.02 05:11:30 WrapperNode [2025-02-07 17:11:30,663 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-02-07 17:11:30,664 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-02-07 17:11:30,664 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-02-07 17:11:30,664 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-02-07 17:11:30,668 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.02 05:11:30" (1/1) ... [2025-02-07 17:11:30,672 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.02 05:11:30" (1/1) ... [2025-02-07 17:11:30,684 INFO L138 Inliner]: procedures = 16, calls = 18, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 82 [2025-02-07 17:11:30,685 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-02-07 17:11:30,685 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-02-07 17:11:30,686 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-02-07 17:11:30,686 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-02-07 17:11:30,691 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.02 05:11:30" (1/1) ... [2025-02-07 17:11:30,691 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.02 05:11:30" (1/1) ... [2025-02-07 17:11:30,696 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.02 05:11:30" (1/1) ... [2025-02-07 17:11:30,708 INFO L175 MemorySlicer]: Split 6 memory accesses to 2 slices as follows [2, 4]. 67 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0]. The 2 writes are split as follows [0, 2]. [2025-02-07 17:11:30,709 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.02 05:11:30" (1/1) ... [2025-02-07 17:11:30,709 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.02 05:11:30" (1/1) ... [2025-02-07 17:11:30,715 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.02 05:11:30" (1/1) ... [2025-02-07 17:11:30,718 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.02 05:11:30" (1/1) ... [2025-02-07 17:11:30,719 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.02 05:11:30" (1/1) ... [2025-02-07 17:11:30,720 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.02 05:11:30" (1/1) ... [2025-02-07 17:11:30,721 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-02-07 17:11:30,722 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2025-02-07 17:11:30,723 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2025-02-07 17:11:30,723 INFO L274 PluginConnector]: IcfgBuilder initialized [2025-02-07 17:11:30,724 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.02 05:11:30" (1/1) ... [2025-02-07 17:11:30,728 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-02-07 17:11:30,739 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-07 17:11:30,754 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) [2025-02-07 17:11:30,764 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 [2025-02-07 17:11:30,782 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2025-02-07 17:11:30,782 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2025-02-07 17:11:30,782 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2025-02-07 17:11:30,782 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2025-02-07 17:11:30,783 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2025-02-07 17:11:30,783 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2025-02-07 17:11:30,783 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2025-02-07 17:11:30,783 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2025-02-07 17:11:30,784 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-02-07 17:11:30,784 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-02-07 17:11:30,784 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2025-02-07 17:11:30,784 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2025-02-07 17:11:30,784 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2025-02-07 17:11:30,844 INFO L257 CfgBuilder]: Building ICFG [2025-02-07 17:11:30,845 INFO L287 CfgBuilder]: Building CFG for each procedure with an implementation [2025-02-07 17:11:30,977 INFO L1324 $ProcedureCfgBuilder]: dead code at ProgramPoint L44: call ULTIMATE.dealloc(main_~#array~0#1.base, main_~#array~0#1.offset);havoc main_~#array~0#1.base, main_~#array~0#1.offset; [2025-02-07 17:11:30,992 INFO L? ?]: Removed 18 outVars from TransFormulas that were not future-live. [2025-02-07 17:11:30,992 INFO L308 CfgBuilder]: Performing block encoding [2025-02-07 17:11:30,999 INFO L332 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-02-07 17:11:30,999 INFO L337 CfgBuilder]: Removed 0 assume(true) statements. [2025-02-07 17:11:30,999 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 07.02 05:11:30 BoogieIcfgContainer [2025-02-07 17:11:30,999 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2025-02-07 17:11:31,002 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2025-02-07 17:11:31,002 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2025-02-07 17:11:31,005 INFO L274 PluginConnector]: TraceAbstraction initialized [2025-02-07 17:11:31,005 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.02 05:11:30" (1/3) ... [2025-02-07 17:11:31,006 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4649376c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.02 05:11:31, skipping insertion in model container [2025-02-07 17:11:31,006 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.02 05:11:30" (2/3) ... [2025-02-07 17:11:31,006 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4649376c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.02 05:11:31, skipping insertion in model container [2025-02-07 17:11:31,007 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 07.02 05:11:30" (3/3) ... [2025-02-07 17:11:31,007 INFO L128 eAbstractionObserver]: Analyzing ICFG array13_pattern.c [2025-02-07 17:11:31,016 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2025-02-07 17:11:31,017 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG array13_pattern.c that has 2 procedures, 25 locations, 1 initial locations, 5 loop locations, and 1 error locations. [2025-02-07 17:11:31,046 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-02-07 17:11:31,052 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;@4bc91204, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-02-07 17:11:31,052 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2025-02-07 17:11:31,058 INFO L276 IsEmpty]: Start isEmpty. Operand has 25 states, 19 states have (on average 1.5263157894736843) internal successors, (29), 20 states have internal predecessors, (29), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2025-02-07 17:11:31,064 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2025-02-07 17:11:31,065 INFO L210 NwaCegarLoop]: Found error trace [2025-02-07 17:11:31,065 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-07 17:11:31,065 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-07 17:11:31,072 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-07 17:11:31,072 INFO L85 PathProgramCache]: Analyzing trace with hash -719620190, now seen corresponding path program 1 times [2025-02-07 17:11:31,076 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-07 17:11:31,077 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1979244226] [2025-02-07 17:11:31,077 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-07 17:11:31,077 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-07 17:11:31,130 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 13 statements into 1 equivalence classes. [2025-02-07 17:11:31,143 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 13 of 13 statements. [2025-02-07 17:11:31,143 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-07 17:11:31,143 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-07 17:11:31,186 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-07 17:11:31,186 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-07 17:11:31,186 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1979244226] [2025-02-07 17:11:31,186 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1979244226] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-07 17:11:31,186 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-07 17:11:31,186 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-02-07 17:11:31,187 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1993425652] [2025-02-07 17:11:31,189 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-07 17:11:31,191 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2025-02-07 17:11:31,191 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-07 17:11:31,203 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2025-02-07 17:11:31,203 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2025-02-07 17:11:31,205 INFO L87 Difference]: Start difference. First operand has 25 states, 19 states have (on average 1.5263157894736843) internal successors, (29), 20 states have internal predecessors, (29), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Second operand has 2 states, 2 states have (on average 5.5) internal successors, (11), 2 states have internal predecessors, (11), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2025-02-07 17:11:31,214 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-07 17:11:31,215 INFO L93 Difference]: Finished difference Result 48 states and 70 transitions. [2025-02-07 17:11:31,215 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2025-02-07 17:11:31,216 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 5.5) internal successors, (11), 2 states have internal predecessors, (11), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 13 [2025-02-07 17:11:31,217 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-07 17:11:31,222 INFO L225 Difference]: With dead ends: 48 [2025-02-07 17:11:31,222 INFO L226 Difference]: Without dead ends: 21 [2025-02-07 17:11:31,224 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2025-02-07 17:11:31,227 INFO L435 NwaCegarLoop]: 32 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 32 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-02-07 17:11:31,227 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 32 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-02-07 17:11:31,236 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21 states. [2025-02-07 17:11:31,244 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21 to 21. [2025-02-07 17:11:31,245 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21 states, 16 states have (on average 1.375) internal successors, (22), 16 states have internal predecessors, (22), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2025-02-07 17:11:31,247 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 28 transitions. [2025-02-07 17:11:31,248 INFO L78 Accepts]: Start accepts. Automaton has 21 states and 28 transitions. Word has length 13 [2025-02-07 17:11:31,248 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-07 17:11:31,248 INFO L471 AbstractCegarLoop]: Abstraction has 21 states and 28 transitions. [2025-02-07 17:11:31,248 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 5.5) internal successors, (11), 2 states have internal predecessors, (11), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2025-02-07 17:11:31,249 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states and 28 transitions. [2025-02-07 17:11:31,249 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2025-02-07 17:11:31,249 INFO L210 NwaCegarLoop]: Found error trace [2025-02-07 17:11:31,249 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-07 17:11:31,250 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2025-02-07 17:11:31,250 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-07 17:11:31,250 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-07 17:11:31,250 INFO L85 PathProgramCache]: Analyzing trace with hash -1256730776, now seen corresponding path program 1 times [2025-02-07 17:11:31,250 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-07 17:11:31,250 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1869607431] [2025-02-07 17:11:31,250 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-07 17:11:31,251 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-07 17:11:31,259 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 26 statements into 1 equivalence classes. [2025-02-07 17:11:31,278 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 26 of 26 statements. [2025-02-07 17:11:31,279 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-07 17:11:31,279 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-07 17:11:31,469 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2025-02-07 17:11:31,469 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-07 17:11:31,469 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1869607431] [2025-02-07 17:11:31,469 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1869607431] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-07 17:11:31,471 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [487326396] [2025-02-07 17:11:31,471 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-07 17:11:31,471 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-07 17:11:31,471 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-07 17:11:31,473 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) [2025-02-07 17:11:31,475 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 [2025-02-07 17:11:31,534 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 26 statements into 1 equivalence classes. [2025-02-07 17:11:31,547 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 26 of 26 statements. [2025-02-07 17:11:31,547 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-07 17:11:31,547 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-07 17:11:31,548 INFO L256 TraceCheckSpWp]: Trace formula consists of 96 conjuncts, 7 conjuncts are in the unsatisfiable core [2025-02-07 17:11:31,551 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-07 17:11:31,656 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-02-07 17:11:31,660 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-02-07 17:11:31,661 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [487326396] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-07 17:11:31,661 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-02-07 17:11:31,661 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [6] total 10 [2025-02-07 17:11:31,661 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1278751178] [2025-02-07 17:11:31,661 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-07 17:11:31,662 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-02-07 17:11:31,662 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-07 17:11:31,662 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-02-07 17:11:31,662 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2025-02-07 17:11:31,662 INFO L87 Difference]: Start difference. First operand 21 states and 28 transitions. Second operand has 6 states, 6 states have (on average 3.3333333333333335) internal successors, (20), 6 states have internal predecessors, (20), 2 states have call successors, (3), 2 states have call predecessors, (3), 3 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) [2025-02-07 17:11:31,730 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-07 17:11:31,730 INFO L93 Difference]: Finished difference Result 50 states and 64 transitions. [2025-02-07 17:11:31,730 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-02-07 17:11:31,731 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 3.3333333333333335) internal successors, (20), 6 states have internal predecessors, (20), 2 states have call successors, (3), 2 states have call predecessors, (3), 3 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) Word has length 26 [2025-02-07 17:11:31,731 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-07 17:11:31,731 INFO L225 Difference]: With dead ends: 50 [2025-02-07 17:11:31,731 INFO L226 Difference]: Without dead ends: 28 [2025-02-07 17:11:31,732 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2025-02-07 17:11:31,732 INFO L435 NwaCegarLoop]: 22 mSDtfsCounter, 6 mSDsluCounter, 38 mSDsCounter, 0 mSdLazyCounter, 43 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 60 SdHoareTripleChecker+Invalid, 46 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 43 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-02-07 17:11:31,732 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 60 Invalid, 46 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 43 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-02-07 17:11:31,733 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states. [2025-02-07 17:11:31,735 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 22. [2025-02-07 17:11:31,735 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22 states, 17 states have (on average 1.3529411764705883) internal successors, (23), 17 states have internal predecessors, (23), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2025-02-07 17:11:31,736 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 29 transitions. [2025-02-07 17:11:31,736 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 29 transitions. Word has length 26 [2025-02-07 17:11:31,736 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-07 17:11:31,737 INFO L471 AbstractCegarLoop]: Abstraction has 22 states and 29 transitions. [2025-02-07 17:11:31,737 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 3.3333333333333335) internal successors, (20), 6 states have internal predecessors, (20), 2 states have call successors, (3), 2 states have call predecessors, (3), 3 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) [2025-02-07 17:11:31,737 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 29 transitions. [2025-02-07 17:11:31,740 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2025-02-07 17:11:31,740 INFO L210 NwaCegarLoop]: Found error trace [2025-02-07 17:11:31,741 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-07 17:11:31,747 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2025-02-07 17:11:31,941 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-07 17:11:31,941 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-07 17:11:31,942 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-07 17:11:31,942 INFO L85 PathProgramCache]: Analyzing trace with hash 746037802, now seen corresponding path program 1 times [2025-02-07 17:11:31,942 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-07 17:11:31,942 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [17718376] [2025-02-07 17:11:31,942 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-07 17:11:31,942 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-07 17:11:31,953 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 28 statements into 1 equivalence classes. [2025-02-07 17:11:31,967 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 28 of 28 statements. [2025-02-07 17:11:31,967 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-07 17:11:31,967 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-07 17:11:32,043 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2025-02-07 17:11:32,043 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-07 17:11:32,043 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [17718376] [2025-02-07 17:11:32,043 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [17718376] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-07 17:11:32,043 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-07 17:11:32,043 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-02-07 17:11:32,043 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [365359354] [2025-02-07 17:11:32,043 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-07 17:11:32,043 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-02-07 17:11:32,043 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-07 17:11:32,044 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-02-07 17:11:32,044 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2025-02-07 17:11:32,044 INFO L87 Difference]: Start difference. First operand 22 states and 29 transitions. Second operand has 4 states, 4 states have (on average 4.0) internal successors, (16), 4 states have internal predecessors, (16), 2 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2025-02-07 17:11:32,083 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-07 17:11:32,084 INFO L93 Difference]: Finished difference Result 45 states and 63 transitions. [2025-02-07 17:11:32,084 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-02-07 17:11:32,085 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 4.0) internal successors, (16), 4 states have internal predecessors, (16), 2 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 28 [2025-02-07 17:11:32,085 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-07 17:11:32,085 INFO L225 Difference]: With dead ends: 45 [2025-02-07 17:11:32,085 INFO L226 Difference]: Without dead ends: 27 [2025-02-07 17:11:32,085 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2025-02-07 17:11:32,086 INFO L435 NwaCegarLoop]: 21 mSDtfsCounter, 4 mSDsluCounter, 29 mSDsCounter, 0 mSdLazyCounter, 32 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 50 SdHoareTripleChecker+Invalid, 35 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 32 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-02-07 17:11:32,086 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 50 Invalid, 35 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 32 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-02-07 17:11:32,086 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2025-02-07 17:11:32,094 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 25. [2025-02-07 17:11:32,094 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25 states, 20 states have (on average 1.35) internal successors, (27), 20 states have internal predecessors, (27), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2025-02-07 17:11:32,095 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 33 transitions. [2025-02-07 17:11:32,095 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 33 transitions. Word has length 28 [2025-02-07 17:11:32,095 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-07 17:11:32,095 INFO L471 AbstractCegarLoop]: Abstraction has 25 states and 33 transitions. [2025-02-07 17:11:32,095 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 4.0) internal successors, (16), 4 states have internal predecessors, (16), 2 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2025-02-07 17:11:32,095 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 33 transitions. [2025-02-07 17:11:32,095 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2025-02-07 17:11:32,095 INFO L210 NwaCegarLoop]: Found error trace [2025-02-07 17:11:32,095 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-07 17:11:32,095 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2025-02-07 17:11:32,096 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-07 17:11:32,096 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-07 17:11:32,096 INFO L85 PathProgramCache]: Analyzing trace with hash -1455638107, now seen corresponding path program 1 times [2025-02-07 17:11:32,096 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-07 17:11:32,096 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1008790907] [2025-02-07 17:11:32,096 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-07 17:11:32,096 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-07 17:11:32,105 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 29 statements into 1 equivalence classes. [2025-02-07 17:11:32,111 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 29 of 29 statements. [2025-02-07 17:11:32,111 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-07 17:11:32,111 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-07 17:11:32,172 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2025-02-07 17:11:32,173 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-07 17:11:32,173 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1008790907] [2025-02-07 17:11:32,173 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1008790907] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-07 17:11:32,173 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1216283456] [2025-02-07 17:11:32,173 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-07 17:11:32,174 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-07 17:11:32,174 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-07 17:11:32,179 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) [2025-02-07 17:11:32,180 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 [2025-02-07 17:11:32,212 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 29 statements into 1 equivalence classes. [2025-02-07 17:11:32,227 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 29 of 29 statements. [2025-02-07 17:11:32,227 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-07 17:11:32,227 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-07 17:11:32,228 INFO L256 TraceCheckSpWp]: Trace formula consists of 109 conjuncts, 4 conjuncts are in the unsatisfiable core [2025-02-07 17:11:32,229 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-07 17:11:32,276 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 8 proven. 1 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2025-02-07 17:11:32,277 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-07 17:11:32,325 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2025-02-07 17:11:32,326 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1216283456] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-07 17:11:32,326 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-07 17:11:32,326 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 8 [2025-02-07 17:11:32,326 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [958763200] [2025-02-07 17:11:32,326 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-07 17:11:32,327 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2025-02-07 17:11:32,327 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-07 17:11:32,328 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2025-02-07 17:11:32,328 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2025-02-07 17:11:32,328 INFO L87 Difference]: Start difference. First operand 25 states and 33 transitions. Second operand has 8 states, 8 states have (on average 3.5) internal successors, (28), 8 states have internal predecessors, (28), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2025-02-07 17:11:32,387 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-07 17:11:32,388 INFO L93 Difference]: Finished difference Result 34 states and 42 transitions. [2025-02-07 17:11:32,388 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2025-02-07 17:11:32,388 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 3.5) internal successors, (28), 8 states have internal predecessors, (28), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 29 [2025-02-07 17:11:32,388 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-07 17:11:32,389 INFO L225 Difference]: With dead ends: 34 [2025-02-07 17:11:32,389 INFO L226 Difference]: Without dead ends: 31 [2025-02-07 17:11:32,389 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 64 GetRequests, 54 SyntacticMatches, 2 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90 [2025-02-07 17:11:32,389 INFO L435 NwaCegarLoop]: 19 mSDtfsCounter, 25 mSDsluCounter, 31 mSDsCounter, 0 mSdLazyCounter, 48 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 25 SdHoareTripleChecker+Valid, 50 SdHoareTripleChecker+Invalid, 54 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 48 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-02-07 17:11:32,390 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [25 Valid, 50 Invalid, 54 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 48 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-02-07 17:11:32,390 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states. [2025-02-07 17:11:32,393 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 29. [2025-02-07 17:11:32,393 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 29 states, 23 states have (on average 1.2608695652173914) internal successors, (29), 23 states have internal predecessors, (29), 3 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2025-02-07 17:11:32,393 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 35 transitions. [2025-02-07 17:11:32,393 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 35 transitions. Word has length 29 [2025-02-07 17:11:32,393 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-07 17:11:32,394 INFO L471 AbstractCegarLoop]: Abstraction has 29 states and 35 transitions. [2025-02-07 17:11:32,394 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 3.5) internal successors, (28), 8 states have internal predecessors, (28), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2025-02-07 17:11:32,394 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 35 transitions. [2025-02-07 17:11:32,394 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2025-02-07 17:11:32,394 INFO L210 NwaCegarLoop]: Found error trace [2025-02-07 17:11:32,394 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-07 17:11:32,400 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2025-02-07 17:11:32,599 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 [2025-02-07 17:11:32,599 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-07 17:11:32,600 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-07 17:11:32,600 INFO L85 PathProgramCache]: Analyzing trace with hash 1459650655, now seen corresponding path program 1 times [2025-02-07 17:11:32,600 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-07 17:11:32,600 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [277116467] [2025-02-07 17:11:32,600 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-07 17:11:32,600 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-07 17:11:32,606 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 32 statements into 1 equivalence classes. [2025-02-07 17:11:32,627 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 32 of 32 statements. [2025-02-07 17:11:32,627 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-07 17:11:32,627 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-07 17:11:32,821 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 7 proven. 1 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2025-02-07 17:11:32,822 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-07 17:11:32,822 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [277116467] [2025-02-07 17:11:32,822 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [277116467] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-07 17:11:32,822 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1415943752] [2025-02-07 17:11:32,822 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-07 17:11:32,822 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-07 17:11:32,822 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-07 17:11:32,824 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) [2025-02-07 17:11:32,825 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 [2025-02-07 17:11:32,854 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 32 statements into 1 equivalence classes. [2025-02-07 17:11:32,867 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 32 of 32 statements. [2025-02-07 17:11:32,867 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-07 17:11:32,867 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-07 17:11:32,868 INFO L256 TraceCheckSpWp]: Trace formula consists of 122 conjuncts, 14 conjuncts are in the unsatisfiable core [2025-02-07 17:11:32,869 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-07 17:11:32,978 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 13 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2025-02-07 17:11:32,978 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-07 17:11:33,143 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 10 proven. 1 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2025-02-07 17:11:33,143 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1415943752] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-07 17:11:33,144 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-07 17:11:33,144 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 12, 11] total 23 [2025-02-07 17:11:33,144 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1839179127] [2025-02-07 17:11:33,144 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-07 17:11:33,144 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2025-02-07 17:11:33,144 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-07 17:11:33,144 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2025-02-07 17:11:33,145 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=92, Invalid=414, Unknown=0, NotChecked=0, Total=506 [2025-02-07 17:11:33,145 INFO L87 Difference]: Start difference. First operand 29 states and 35 transitions. Second operand has 23 states, 19 states have (on average 2.0526315789473686) internal successors, (39), 16 states have internal predecessors, (39), 6 states have call successors, (7), 3 states have call predecessors, (7), 5 states have return successors, (7), 7 states have call predecessors, (7), 6 states have call successors, (7) [2025-02-07 17:11:33,619 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-07 17:11:33,620 INFO L93 Difference]: Finished difference Result 123 states and 165 transitions. [2025-02-07 17:11:33,620 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2025-02-07 17:11:33,620 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 19 states have (on average 2.0526315789473686) internal successors, (39), 16 states have internal predecessors, (39), 6 states have call successors, (7), 3 states have call predecessors, (7), 5 states have return successors, (7), 7 states have call predecessors, (7), 6 states have call successors, (7) Word has length 32 [2025-02-07 17:11:33,621 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-07 17:11:33,622 INFO L225 Difference]: With dead ends: 123 [2025-02-07 17:11:33,622 INFO L226 Difference]: Without dead ends: 103 [2025-02-07 17:11:33,623 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 89 GetRequests, 50 SyntacticMatches, 3 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 324 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=295, Invalid=1111, Unknown=0, NotChecked=0, Total=1406 [2025-02-07 17:11:33,623 INFO L435 NwaCegarLoop]: 32 mSDtfsCounter, 114 mSDsluCounter, 233 mSDsCounter, 0 mSdLazyCounter, 681 mSolverCounterSat, 31 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 115 SdHoareTripleChecker+Valid, 265 SdHoareTripleChecker+Invalid, 712 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 31 IncrementalHoareTripleChecker+Valid, 681 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2025-02-07 17:11:33,624 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [115 Valid, 265 Invalid, 712 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [31 Valid, 681 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2025-02-07 17:11:33,624 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 103 states. [2025-02-07 17:11:33,633 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 103 to 61. [2025-02-07 17:11:33,634 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 61 states, 50 states have (on average 1.38) internal successors, (69), 51 states have internal predecessors, (69), 6 states have call successors, (6), 4 states have call predecessors, (6), 4 states have return successors, (6), 5 states have call predecessors, (6), 6 states have call successors, (6) [2025-02-07 17:11:33,636 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61 states to 61 states and 81 transitions. [2025-02-07 17:11:33,637 INFO L78 Accepts]: Start accepts. Automaton has 61 states and 81 transitions. Word has length 32 [2025-02-07 17:11:33,637 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-07 17:11:33,637 INFO L471 AbstractCegarLoop]: Abstraction has 61 states and 81 transitions. [2025-02-07 17:11:33,637 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 19 states have (on average 2.0526315789473686) internal successors, (39), 16 states have internal predecessors, (39), 6 states have call successors, (7), 3 states have call predecessors, (7), 5 states have return successors, (7), 7 states have call predecessors, (7), 6 states have call successors, (7) [2025-02-07 17:11:33,637 INFO L276 IsEmpty]: Start isEmpty. Operand 61 states and 81 transitions. [2025-02-07 17:11:33,639 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2025-02-07 17:11:33,639 INFO L210 NwaCegarLoop]: Found error trace [2025-02-07 17:11:33,639 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-07 17:11:33,645 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2025-02-07 17:11:33,839 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 [2025-02-07 17:11:33,839 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-07 17:11:33,840 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-07 17:11:33,840 INFO L85 PathProgramCache]: Analyzing trace with hash 1263137150, now seen corresponding path program 1 times [2025-02-07 17:11:33,840 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-07 17:11:33,840 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [933659049] [2025-02-07 17:11:33,840 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-07 17:11:33,840 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-07 17:11:33,850 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 32 statements into 1 equivalence classes. [2025-02-07 17:11:33,870 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 32 of 32 statements. [2025-02-07 17:11:33,871 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-07 17:11:33,871 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unknown [2025-02-07 17:11:33,873 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1669528318] [2025-02-07 17:11:33,873 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-07 17:11:33,873 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-07 17:11:33,873 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-07 17:11:33,878 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) [2025-02-07 17:11:33,883 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 [2025-02-07 17:11:33,909 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 32 statements into 1 equivalence classes. [2025-02-07 17:11:33,921 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 32 of 32 statements. [2025-02-07 17:11:33,922 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-07 17:11:33,922 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-07 17:11:33,922 INFO L256 TraceCheckSpWp]: Trace formula consists of 124 conjuncts, 38 conjuncts are in the unsatisfiable core [2025-02-07 17:11:33,925 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-07 17:11:33,988 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2025-02-07 17:11:34,188 INFO L349 Elim1Store]: treesize reduction 31, result has 18.4 percent of original size [2025-02-07 17:11:34,189 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 35 treesize of output 24 [2025-02-07 17:11:34,252 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2025-02-07 17:11:34,275 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 2 proven. 10 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2025-02-07 17:11:34,275 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-07 17:11:34,475 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 28 [2025-02-07 17:11:34,481 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 48 treesize of output 46 [2025-02-07 17:11:34,554 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2025-02-07 17:11:34,555 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-07 17:11:34,555 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [933659049] [2025-02-07 17:11:34,555 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2025-02-07 17:11:34,555 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1669528318] [2025-02-07 17:11:34,555 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1669528318] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-07 17:11:34,555 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2025-02-07 17:11:34,555 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 11] total 24 [2025-02-07 17:11:34,556 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2102390387] [2025-02-07 17:11:34,556 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2025-02-07 17:11:34,557 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2025-02-07 17:11:34,557 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-07 17:11:34,557 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2025-02-07 17:11:34,558 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=102, Invalid=450, Unknown=0, NotChecked=0, Total=552 [2025-02-07 17:11:34,559 INFO L87 Difference]: Start difference. First operand 61 states and 81 transitions. Second operand has 24 states, 24 states have (on average 1.7083333333333333) internal successors, (41), 23 states have internal predecessors, (41), 3 states have call successors, (5), 2 states have call predecessors, (5), 3 states have return successors, (6), 4 states have call predecessors, (6), 3 states have call successors, (6) [2025-02-07 17:11:35,402 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-07 17:11:35,402 INFO L93 Difference]: Finished difference Result 150 states and 203 transitions. [2025-02-07 17:11:35,402 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2025-02-07 17:11:35,403 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 24 states have (on average 1.7083333333333333) internal successors, (41), 23 states have internal predecessors, (41), 3 states have call successors, (5), 2 states have call predecessors, (5), 3 states have return successors, (6), 4 states have call predecessors, (6), 3 states have call successors, (6) Word has length 32 [2025-02-07 17:11:35,403 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-07 17:11:35,404 INFO L225 Difference]: With dead ends: 150 [2025-02-07 17:11:35,404 INFO L226 Difference]: Without dead ends: 119 [2025-02-07 17:11:35,405 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 85 GetRequests, 36 SyntacticMatches, 4 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 565 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=388, Invalid=1774, Unknown=0, NotChecked=0, Total=2162 [2025-02-07 17:11:35,405 INFO L435 NwaCegarLoop]: 15 mSDtfsCounter, 93 mSDsluCounter, 159 mSDsCounter, 0 mSdLazyCounter, 437 mSolverCounterSat, 59 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 93 SdHoareTripleChecker+Valid, 174 SdHoareTripleChecker+Invalid, 496 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 59 IncrementalHoareTripleChecker+Valid, 437 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2025-02-07 17:11:35,405 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [93 Valid, 174 Invalid, 496 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [59 Valid, 437 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2025-02-07 17:11:35,406 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 119 states. [2025-02-07 17:11:35,431 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 119 to 101. [2025-02-07 17:11:35,431 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 101 states, 83 states have (on average 1.3614457831325302) internal successors, (113), 85 states have internal predecessors, (113), 11 states have call successors, (11), 6 states have call predecessors, (11), 6 states have return successors, (11), 9 states have call predecessors, (11), 11 states have call successors, (11) [2025-02-07 17:11:35,432 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 101 states to 101 states and 135 transitions. [2025-02-07 17:11:35,432 INFO L78 Accepts]: Start accepts. Automaton has 101 states and 135 transitions. Word has length 32 [2025-02-07 17:11:35,432 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-07 17:11:35,432 INFO L471 AbstractCegarLoop]: Abstraction has 101 states and 135 transitions. [2025-02-07 17:11:35,432 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 1.7083333333333333) internal successors, (41), 23 states have internal predecessors, (41), 3 states have call successors, (5), 2 states have call predecessors, (5), 3 states have return successors, (6), 4 states have call predecessors, (6), 3 states have call successors, (6) [2025-02-07 17:11:35,432 INFO L276 IsEmpty]: Start isEmpty. Operand 101 states and 135 transitions. [2025-02-07 17:11:35,433 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2025-02-07 17:11:35,433 INFO L210 NwaCegarLoop]: Found error trace [2025-02-07 17:11:35,433 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-07 17:11:35,441 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2025-02-07 17:11:35,639 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 [2025-02-07 17:11:35,639 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-07 17:11:35,640 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-07 17:11:35,640 INFO L85 PathProgramCache]: Analyzing trace with hash 503501256, now seen corresponding path program 2 times [2025-02-07 17:11:35,640 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-07 17:11:35,640 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [86058931] [2025-02-07 17:11:35,640 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-02-07 17:11:35,640 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-07 17:11:35,648 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 33 statements into 2 equivalence classes. [2025-02-07 17:11:35,659 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 33 of 33 statements. [2025-02-07 17:11:35,659 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-02-07 17:11:35,659 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-07 17:11:35,722 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 4 proven. 2 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2025-02-07 17:11:35,722 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-07 17:11:35,722 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [86058931] [2025-02-07 17:11:35,722 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [86058931] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-07 17:11:35,722 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1000207192] [2025-02-07 17:11:35,722 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-02-07 17:11:35,722 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-07 17:11:35,723 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-07 17:11:35,726 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) [2025-02-07 17:11:35,727 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 [2025-02-07 17:11:35,755 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 33 statements into 2 equivalence classes. [2025-02-07 17:11:35,767 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 33 of 33 statements. [2025-02-07 17:11:35,767 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-02-07 17:11:35,767 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-07 17:11:35,768 INFO L256 TraceCheckSpWp]: Trace formula consists of 131 conjuncts, 6 conjuncts are in the unsatisfiable core [2025-02-07 17:11:35,769 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-07 17:11:35,805 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 13 proven. 1 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2025-02-07 17:11:35,805 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-07 17:11:35,839 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 5 proven. 1 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2025-02-07 17:11:35,839 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1000207192] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-07 17:11:35,839 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-07 17:11:35,839 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 11 [2025-02-07 17:11:35,840 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [758210321] [2025-02-07 17:11:35,840 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-07 17:11:35,840 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2025-02-07 17:11:35,840 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-07 17:11:35,840 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2025-02-07 17:11:35,840 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2025-02-07 17:11:35,840 INFO L87 Difference]: Start difference. First operand 101 states and 135 transitions. Second operand has 11 states, 11 states have (on average 2.8181818181818183) internal successors, (31), 11 states have internal predecessors, (31), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2025-02-07 17:11:35,929 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-07 17:11:35,929 INFO L93 Difference]: Finished difference Result 145 states and 189 transitions. [2025-02-07 17:11:35,930 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2025-02-07 17:11:35,930 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 2.8181818181818183) internal successors, (31), 11 states have internal predecessors, (31), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 33 [2025-02-07 17:11:35,930 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-07 17:11:35,930 INFO L225 Difference]: With dead ends: 145 [2025-02-07 17:11:35,930 INFO L226 Difference]: Without dead ends: 80 [2025-02-07 17:11:35,931 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 72 GetRequests, 59 SyntacticMatches, 3 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 39 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2025-02-07 17:11:35,931 INFO L435 NwaCegarLoop]: 20 mSDtfsCounter, 6 mSDsluCounter, 87 mSDsCounter, 0 mSdLazyCounter, 132 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 107 SdHoareTripleChecker+Invalid, 141 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 132 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-02-07 17:11:35,931 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 107 Invalid, 141 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 132 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-02-07 17:11:35,932 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 80 states. [2025-02-07 17:11:35,957 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 80 to 77. [2025-02-07 17:11:35,957 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 77 states, 64 states have (on average 1.328125) internal successors, (85), 65 states have internal predecessors, (85), 8 states have call successors, (8), 4 states have call predecessors, (8), 4 states have return successors, (8), 7 states have call predecessors, (8), 8 states have call successors, (8) [2025-02-07 17:11:35,962 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 77 states to 77 states and 101 transitions. [2025-02-07 17:11:35,962 INFO L78 Accepts]: Start accepts. Automaton has 77 states and 101 transitions. Word has length 33 [2025-02-07 17:11:35,962 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-07 17:11:35,962 INFO L471 AbstractCegarLoop]: Abstraction has 77 states and 101 transitions. [2025-02-07 17:11:35,962 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 2.8181818181818183) internal successors, (31), 11 states have internal predecessors, (31), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2025-02-07 17:11:35,962 INFO L276 IsEmpty]: Start isEmpty. Operand 77 states and 101 transitions. [2025-02-07 17:11:35,963 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2025-02-07 17:11:35,963 INFO L210 NwaCegarLoop]: Found error trace [2025-02-07 17:11:35,963 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-07 17:11:35,972 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2025-02-07 17:11:36,163 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 [2025-02-07 17:11:36,164 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-07 17:11:36,164 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-07 17:11:36,164 INFO L85 PathProgramCache]: Analyzing trace with hash 874996314, now seen corresponding path program 2 times [2025-02-07 17:11:36,164 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-07 17:11:36,164 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [66897249] [2025-02-07 17:11:36,164 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-02-07 17:11:36,164 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-07 17:11:36,169 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 33 statements into 2 equivalence classes. [2025-02-07 17:11:36,173 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 33 of 33 statements. [2025-02-07 17:11:36,174 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-02-07 17:11:36,174 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-07 17:11:36,235 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2025-02-07 17:11:36,235 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-07 17:11:36,235 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [66897249] [2025-02-07 17:11:36,235 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [66897249] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-07 17:11:36,236 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1105660501] [2025-02-07 17:11:36,236 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-02-07 17:11:36,236 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-07 17:11:36,236 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-07 17:11:36,237 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) [2025-02-07 17:11:36,239 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 [2025-02-07 17:11:36,271 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 33 statements into 2 equivalence classes. [2025-02-07 17:11:36,286 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 33 of 33 statements. [2025-02-07 17:11:36,286 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-02-07 17:11:36,286 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-07 17:11:36,286 INFO L256 TraceCheckSpWp]: Trace formula consists of 129 conjuncts, 6 conjuncts are in the unsatisfiable core [2025-02-07 17:11:36,288 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-07 17:11:36,327 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 9 proven. 3 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2025-02-07 17:11:36,328 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-07 17:11:36,372 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2025-02-07 17:11:36,372 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1105660501] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-07 17:11:36,372 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-07 17:11:36,373 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 15 [2025-02-07 17:11:36,373 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2018620117] [2025-02-07 17:11:36,373 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-07 17:11:36,373 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2025-02-07 17:11:36,373 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-07 17:11:36,374 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2025-02-07 17:11:36,374 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=153, Unknown=0, NotChecked=0, Total=210 [2025-02-07 17:11:36,374 INFO L87 Difference]: Start difference. First operand 77 states and 101 transitions. Second operand has 15 states, 15 states have (on average 2.2666666666666666) internal successors, (34), 15 states have internal predecessors, (34), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2025-02-07 17:11:36,499 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-07 17:11:36,499 INFO L93 Difference]: Finished difference Result 125 states and 175 transitions. [2025-02-07 17:11:36,500 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2025-02-07 17:11:36,500 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 2.2666666666666666) internal successors, (34), 15 states have internal predecessors, (34), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 33 [2025-02-07 17:11:36,501 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-07 17:11:36,501 INFO L225 Difference]: With dead ends: 125 [2025-02-07 17:11:36,501 INFO L226 Difference]: Without dead ends: 88 [2025-02-07 17:11:36,502 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 74 GetRequests, 56 SyntacticMatches, 2 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 95 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=90, Invalid=216, Unknown=0, NotChecked=0, Total=306 [2025-02-07 17:11:36,502 INFO L435 NwaCegarLoop]: 22 mSDtfsCounter, 10 mSDsluCounter, 109 mSDsCounter, 0 mSdLazyCounter, 134 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 131 SdHoareTripleChecker+Invalid, 151 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 134 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-02-07 17:11:36,502 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [10 Valid, 131 Invalid, 151 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 134 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-02-07 17:11:36,503 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 88 states. [2025-02-07 17:11:36,530 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 88 to 82. [2025-02-07 17:11:36,531 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 82 states, 69 states have (on average 1.3478260869565217) internal successors, (93), 70 states have internal predecessors, (93), 8 states have call successors, (8), 4 states have call predecessors, (8), 4 states have return successors, (8), 7 states have call predecessors, (8), 8 states have call successors, (8) [2025-02-07 17:11:36,532 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 82 states to 82 states and 109 transitions. [2025-02-07 17:11:36,533 INFO L78 Accepts]: Start accepts. Automaton has 82 states and 109 transitions. Word has length 33 [2025-02-07 17:11:36,533 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-07 17:11:36,533 INFO L471 AbstractCegarLoop]: Abstraction has 82 states and 109 transitions. [2025-02-07 17:11:36,533 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 2.2666666666666666) internal successors, (34), 15 states have internal predecessors, (34), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2025-02-07 17:11:36,534 INFO L276 IsEmpty]: Start isEmpty. Operand 82 states and 109 transitions. [2025-02-07 17:11:36,534 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2025-02-07 17:11:36,536 INFO L210 NwaCegarLoop]: Found error trace [2025-02-07 17:11:36,536 INFO L218 NwaCegarLoop]: trace histogram [4, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-07 17:11:36,542 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2025-02-07 17:11:36,736 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 [2025-02-07 17:11:36,737 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-07 17:11:36,737 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-07 17:11:36,737 INFO L85 PathProgramCache]: Analyzing trace with hash -305244680, now seen corresponding path program 3 times [2025-02-07 17:11:36,737 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-07 17:11:36,737 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [794331924] [2025-02-07 17:11:36,737 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-02-07 17:11:36,737 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-07 17:11:36,748 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 37 statements into 7 equivalence classes. [2025-02-07 17:11:36,756 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) and asserted 29 of 37 statements. [2025-02-07 17:11:36,756 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2025-02-07 17:11:36,756 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-07 17:11:36,943 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 6 proven. 1 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2025-02-07 17:11:36,943 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-07 17:11:36,943 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [794331924] [2025-02-07 17:11:36,943 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [794331924] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-07 17:11:36,943 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [78618881] [2025-02-07 17:11:36,943 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-02-07 17:11:36,943 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-07 17:11:36,943 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-07 17:11:36,946 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) [2025-02-07 17:11:36,951 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 [2025-02-07 17:11:36,984 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 37 statements into 7 equivalence classes. [2025-02-07 17:11:37,007 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) and asserted 29 of 37 statements. [2025-02-07 17:11:37,007 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2025-02-07 17:11:37,007 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-07 17:11:37,008 INFO L256 TraceCheckSpWp]: Trace formula consists of 109 conjuncts, 14 conjuncts are in the unsatisfiable core [2025-02-07 17:11:37,009 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-07 17:11:37,133 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 11 proven. 1 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2025-02-07 17:11:37,133 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-07 17:11:37,341 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 9 proven. 1 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2025-02-07 17:11:37,341 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [78618881] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-07 17:11:37,341 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-07 17:11:37,341 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 12, 11] total 23 [2025-02-07 17:11:37,341 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1219740427] [2025-02-07 17:11:37,341 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-07 17:11:37,342 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2025-02-07 17:11:37,342 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-07 17:11:37,342 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2025-02-07 17:11:37,343 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=115, Invalid=391, Unknown=0, NotChecked=0, Total=506 [2025-02-07 17:11:37,343 INFO L87 Difference]: Start difference. First operand 82 states and 109 transitions. Second operand has 23 states, 20 states have (on average 2.15) internal successors, (43), 16 states have internal predecessors, (43), 4 states have call successors, (5), 2 states have call predecessors, (5), 5 states have return successors, (7), 7 states have call predecessors, (7), 4 states have call successors, (7) [2025-02-07 17:11:37,588 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-07 17:11:37,589 INFO L93 Difference]: Finished difference Result 109 states and 146 transitions. [2025-02-07 17:11:37,589 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2025-02-07 17:11:37,589 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 20 states have (on average 2.15) internal successors, (43), 16 states have internal predecessors, (43), 4 states have call successors, (5), 2 states have call predecessors, (5), 5 states have return successors, (7), 7 states have call predecessors, (7), 4 states have call successors, (7) Word has length 37 [2025-02-07 17:11:37,590 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-07 17:11:37,591 INFO L225 Difference]: With dead ends: 109 [2025-02-07 17:11:37,591 INFO L226 Difference]: Without dead ends: 106 [2025-02-07 17:11:37,592 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 91 GetRequests, 61 SyntacticMatches, 2 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 210 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=195, Invalid=675, Unknown=0, NotChecked=0, Total=870 [2025-02-07 17:11:37,592 INFO L435 NwaCegarLoop]: 23 mSDtfsCounter, 84 mSDsluCounter, 101 mSDsCounter, 0 mSdLazyCounter, 249 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 85 SdHoareTripleChecker+Valid, 124 SdHoareTripleChecker+Invalid, 269 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 249 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-02-07 17:11:37,592 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [85 Valid, 124 Invalid, 269 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 249 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-02-07 17:11:37,593 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 106 states. [2025-02-07 17:11:37,607 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 106 to 87. [2025-02-07 17:11:37,608 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 87 states, 73 states have (on average 1.3287671232876712) internal successors, (97), 74 states have internal predecessors, (97), 8 states have call successors, (8), 5 states have call predecessors, (8), 5 states have return successors, (8), 7 states have call predecessors, (8), 8 states have call successors, (8) [2025-02-07 17:11:37,610 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 87 states to 87 states and 113 transitions. [2025-02-07 17:11:37,610 INFO L78 Accepts]: Start accepts. Automaton has 87 states and 113 transitions. Word has length 37 [2025-02-07 17:11:37,610 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-07 17:11:37,610 INFO L471 AbstractCegarLoop]: Abstraction has 87 states and 113 transitions. [2025-02-07 17:11:37,610 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 20 states have (on average 2.15) internal successors, (43), 16 states have internal predecessors, (43), 4 states have call successors, (5), 2 states have call predecessors, (5), 5 states have return successors, (7), 7 states have call predecessors, (7), 4 states have call successors, (7) [2025-02-07 17:11:37,610 INFO L276 IsEmpty]: Start isEmpty. Operand 87 states and 113 transitions. [2025-02-07 17:11:37,611 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2025-02-07 17:11:37,611 INFO L210 NwaCegarLoop]: Found error trace [2025-02-07 17:11:37,611 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-07 17:11:37,622 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2025-02-07 17:11:37,815 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 [2025-02-07 17:11:37,815 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-07 17:11:37,815 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-07 17:11:37,815 INFO L85 PathProgramCache]: Analyzing trace with hash -1015562547, now seen corresponding path program 3 times [2025-02-07 17:11:37,815 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-07 17:11:37,815 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [904059021] [2025-02-07 17:11:37,816 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-02-07 17:11:37,816 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-07 17:11:37,820 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 38 statements into 6 equivalence classes. [2025-02-07 17:11:37,833 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) and asserted 34 of 38 statements. [2025-02-07 17:11:37,833 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2025-02-07 17:11:37,835 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-07 17:11:37,887 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 2 proven. 6 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2025-02-07 17:11:37,887 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-07 17:11:37,887 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [904059021] [2025-02-07 17:11:37,887 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [904059021] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-07 17:11:37,887 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [104895249] [2025-02-07 17:11:37,887 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-02-07 17:11:37,888 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-07 17:11:37,888 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-07 17:11:37,892 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) [2025-02-07 17:11:37,893 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 [2025-02-07 17:11:37,923 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 38 statements into 6 equivalence classes. [2025-02-07 17:11:37,946 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) and asserted 34 of 38 statements. [2025-02-07 17:11:37,946 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2025-02-07 17:11:37,946 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-07 17:11:37,947 INFO L256 TraceCheckSpWp]: Trace formula consists of 130 conjuncts, 6 conjuncts are in the unsatisfiable core [2025-02-07 17:11:37,950 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-07 17:11:37,981 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 3 proven. 5 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2025-02-07 17:11:37,981 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-07 17:11:38,007 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 3 proven. 5 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2025-02-07 17:11:38,007 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [104895249] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-07 17:11:38,007 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-07 17:11:38,008 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 9 [2025-02-07 17:11:38,008 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [852750520] [2025-02-07 17:11:38,008 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-07 17:11:38,008 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2025-02-07 17:11:38,008 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-07 17:11:38,008 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2025-02-07 17:11:38,008 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2025-02-07 17:11:38,009 INFO L87 Difference]: Start difference. First operand 87 states and 113 transitions. Second operand has 9 states, 9 states have (on average 3.3333333333333335) internal successors, (30), 9 states have internal predecessors, (30), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2025-02-07 17:11:38,076 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-07 17:11:38,076 INFO L93 Difference]: Finished difference Result 94 states and 121 transitions. [2025-02-07 17:11:38,076 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2025-02-07 17:11:38,076 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 3.3333333333333335) internal successors, (30), 9 states have internal predecessors, (30), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) Word has length 38 [2025-02-07 17:11:38,077 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-07 17:11:38,077 INFO L225 Difference]: With dead ends: 94 [2025-02-07 17:11:38,077 INFO L226 Difference]: Without dead ends: 53 [2025-02-07 17:11:38,077 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 86 GetRequests, 72 SyntacticMatches, 4 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=42, Invalid=90, Unknown=0, NotChecked=0, Total=132 [2025-02-07 17:11:38,077 INFO L435 NwaCegarLoop]: 20 mSDtfsCounter, 14 mSDsluCounter, 73 mSDsCounter, 0 mSdLazyCounter, 93 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14 SdHoareTripleChecker+Valid, 93 SdHoareTripleChecker+Invalid, 103 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 93 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-02-07 17:11:38,078 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [14 Valid, 93 Invalid, 103 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 93 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-02-07 17:11:38,078 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53 states. [2025-02-07 17:11:38,082 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53 to 39. [2025-02-07 17:11:38,082 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 39 states, 33 states have (on average 1.2424242424242424) internal successors, (41), 33 states have internal predecessors, (41), 3 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2025-02-07 17:11:38,083 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 47 transitions. [2025-02-07 17:11:38,083 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 47 transitions. Word has length 38 [2025-02-07 17:11:38,083 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-07 17:11:38,083 INFO L471 AbstractCegarLoop]: Abstraction has 39 states and 47 transitions. [2025-02-07 17:11:38,083 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 3.3333333333333335) internal successors, (30), 9 states have internal predecessors, (30), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2025-02-07 17:11:38,083 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 47 transitions. [2025-02-07 17:11:38,083 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2025-02-07 17:11:38,084 INFO L210 NwaCegarLoop]: Found error trace [2025-02-07 17:11:38,084 INFO L218 NwaCegarLoop]: trace histogram [4, 4, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-07 17:11:38,089 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2025-02-07 17:11:38,288 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,9 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-07 17:11:38,288 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-07 17:11:38,289 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-07 17:11:38,289 INFO L85 PathProgramCache]: Analyzing trace with hash 1137624432, now seen corresponding path program 4 times [2025-02-07 17:11:38,289 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-07 17:11:38,289 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1119064038] [2025-02-07 17:11:38,289 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-02-07 17:11:38,289 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-07 17:11:38,294 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 42 statements into 2 equivalence classes. [2025-02-07 17:11:38,304 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) and asserted 42 of 42 statements. [2025-02-07 17:11:38,304 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) [2025-02-07 17:11:38,304 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unknown [2025-02-07 17:11:38,309 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1622109940] [2025-02-07 17:11:38,310 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-02-07 17:11:38,310 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-07 17:11:38,310 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-07 17:11:38,314 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) [2025-02-07 17:11:38,316 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 [2025-02-07 17:11:38,353 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 42 statements into 2 equivalence classes. [2025-02-07 17:11:38,507 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) and asserted 42 of 42 statements. [2025-02-07 17:11:38,508 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) [2025-02-07 17:11:38,508 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-07 17:11:38,511 INFO L256 TraceCheckSpWp]: Trace formula consists of 176 conjuncts, 85 conjuncts are in the unsatisfiable core [2025-02-07 17:11:38,513 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-07 17:11:38,600 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2025-02-07 17:11:38,634 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 18 [2025-02-07 17:11:38,738 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-02-07 17:11:38,738 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 30 treesize of output 21 [2025-02-07 17:11:38,779 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-02-07 17:11:38,779 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 26 treesize of output 28 [2025-02-07 17:11:39,203 INFO L190 IndexEqualityManager]: detected not equals via solver [2025-02-07 17:11:39,204 INFO L190 IndexEqualityManager]: detected not equals via solver [2025-02-07 17:11:39,205 INFO L190 IndexEqualityManager]: detected not equals via solver [2025-02-07 17:11:39,211 INFO L349 Elim1Store]: treesize reduction 24, result has 4.0 percent of original size [2025-02-07 17:11:39,211 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 6 select indices, 6 select index equivalence classes, 6 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 12 case distinctions, treesize of input 70 treesize of output 61 [2025-02-07 17:11:39,819 INFO L190 IndexEqualityManager]: detected not equals via solver [2025-02-07 17:11:39,820 INFO L190 IndexEqualityManager]: detected not equals via solver [2025-02-07 17:11:39,821 INFO L190 IndexEqualityManager]: detected not equals via solver [2025-02-07 17:11:39,822 INFO L173 IndexEqualityManager]: detected equality via solver [2025-02-07 17:11:39,832 INFO L349 Elim1Store]: treesize reduction 16, result has 42.9 percent of original size [2025-02-07 17:11:39,832 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 8 select indices, 8 select index equivalence classes, 6 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 28 case distinctions, treesize of input 69 treesize of output 38 [2025-02-07 17:11:39,871 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 8 proven. 36 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2025-02-07 17:11:39,871 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-07 17:11:41,483 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-07 17:11:41,483 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1119064038] [2025-02-07 17:11:41,483 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2025-02-07 17:11:41,483 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1622109940] [2025-02-07 17:11:41,483 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1622109940] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-07 17:11:41,483 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2025-02-07 17:11:41,483 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [31] total 31 [2025-02-07 17:11:41,483 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1828591664] [2025-02-07 17:11:41,483 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2025-02-07 17:11:41,484 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2025-02-07 17:11:41,484 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-07 17:11:41,484 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2025-02-07 17:11:41,484 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=229, Invalid=1663, Unknown=0, NotChecked=0, Total=1892 [2025-02-07 17:11:41,485 INFO L87 Difference]: Start difference. First operand 39 states and 47 transitions. Second operand has 31 states, 30 states have (on average 1.1) internal successors, (33), 27 states have internal predecessors, (33), 3 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2025-02-07 17:11:42,539 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-07 17:11:42,539 INFO L93 Difference]: Finished difference Result 117 states and 149 transitions. [2025-02-07 17:11:42,539 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2025-02-07 17:11:42,539 INFO L78 Accepts]: Start accepts. Automaton has has 31 states, 30 states have (on average 1.1) internal successors, (33), 27 states have internal predecessors, (33), 3 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Word has length 42 [2025-02-07 17:11:42,539 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-07 17:11:42,540 INFO L225 Difference]: With dead ends: 117 [2025-02-07 17:11:42,540 INFO L226 Difference]: Without dead ends: 89 [2025-02-07 17:11:42,541 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 72 GetRequests, 14 SyntacticMatches, 1 SemanticMatches, 57 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1008 ImplicationChecksByTransitivity, 2.7s TimeCoverageRelationStatistics Valid=466, Invalid=2956, Unknown=0, NotChecked=0, Total=3422 [2025-02-07 17:11:42,541 INFO L435 NwaCegarLoop]: 19 mSDtfsCounter, 70 mSDsluCounter, 145 mSDsCounter, 0 mSdLazyCounter, 561 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 74 SdHoareTripleChecker+Valid, 164 SdHoareTripleChecker+Invalid, 579 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 561 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2025-02-07 17:11:42,541 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [74 Valid, 164 Invalid, 579 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 561 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2025-02-07 17:11:42,542 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 89 states. [2025-02-07 17:11:42,550 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 89 to 64. [2025-02-07 17:11:42,551 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 64 states, 55 states have (on average 1.2363636363636363) internal successors, (68), 55 states have internal predecessors, (68), 5 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2025-02-07 17:11:42,551 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 64 states to 64 states and 78 transitions. [2025-02-07 17:11:42,551 INFO L78 Accepts]: Start accepts. Automaton has 64 states and 78 transitions. Word has length 42 [2025-02-07 17:11:42,551 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-07 17:11:42,551 INFO L471 AbstractCegarLoop]: Abstraction has 64 states and 78 transitions. [2025-02-07 17:11:42,551 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 30 states have (on average 1.1) internal successors, (33), 27 states have internal predecessors, (33), 3 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2025-02-07 17:11:42,551 INFO L276 IsEmpty]: Start isEmpty. Operand 64 states and 78 transitions. [2025-02-07 17:11:42,552 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2025-02-07 17:11:42,552 INFO L210 NwaCegarLoop]: Found error trace [2025-02-07 17:11:42,552 INFO L218 NwaCegarLoop]: trace histogram [4, 4, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-07 17:11:42,558 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2025-02-07 17:11:42,756 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,10 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-07 17:11:42,756 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-07 17:11:42,756 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-07 17:11:42,756 INFO L85 PathProgramCache]: Analyzing trace with hash -1649791055, now seen corresponding path program 4 times [2025-02-07 17:11:42,756 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-07 17:11:42,756 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [385510860] [2025-02-07 17:11:42,756 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-02-07 17:11:42,756 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-07 17:11:42,767 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 42 statements into 2 equivalence classes. [2025-02-07 17:11:42,789 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) and asserted 42 of 42 statements. [2025-02-07 17:11:42,789 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) [2025-02-07 17:11:42,789 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unknown [2025-02-07 17:11:42,790 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [248741888] [2025-02-07 17:11:42,790 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-02-07 17:11:42,790 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-07 17:11:42,790 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-07 17:11:42,793 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) [2025-02-07 17:11:42,794 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 [2025-02-07 17:11:42,825 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 42 statements into 2 equivalence classes. [2025-02-07 17:11:42,999 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) and asserted 42 of 42 statements. [2025-02-07 17:11:42,999 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) [2025-02-07 17:11:42,999 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-07 17:11:43,001 INFO L256 TraceCheckSpWp]: Trace formula consists of 178 conjuncts, 79 conjuncts are in the unsatisfiable core [2025-02-07 17:11:43,005 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-07 17:11:43,039 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2025-02-07 17:11:43,065 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 18 [2025-02-07 17:11:43,137 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-02-07 17:11:43,137 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 26 treesize of output 28 [2025-02-07 17:11:43,166 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-02-07 17:11:43,167 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 6 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 33 treesize of output 38 [2025-02-07 17:11:43,556 INFO L190 IndexEqualityManager]: detected not equals via solver [2025-02-07 17:11:43,609 INFO L349 Elim1Store]: treesize reduction 284, result has 13.1 percent of original size [2025-02-07 17:11:43,609 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 9 select indices, 9 select index equivalence classes, 7 disjoint index pairs (out of 36 index pairs), introduced 9 new quantified variables, introduced 42 case distinctions, treesize of input 84 treesize of output 94 [2025-02-07 17:11:43,899 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 8 proven. 36 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2025-02-07 17:11:43,899 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-07 17:11:44,485 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-07 17:11:44,485 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [385510860] [2025-02-07 17:11:44,485 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2025-02-07 17:11:44,485 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [248741888] [2025-02-07 17:11:44,485 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [248741888] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-07 17:11:44,485 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2025-02-07 17:11:44,486 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24] total 24 [2025-02-07 17:11:44,486 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1501329205] [2025-02-07 17:11:44,486 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2025-02-07 17:11:44,486 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2025-02-07 17:11:44,486 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-07 17:11:44,486 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2025-02-07 17:11:44,487 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=223, Invalid=1109, Unknown=0, NotChecked=0, Total=1332 [2025-02-07 17:11:44,487 INFO L87 Difference]: Start difference. First operand 64 states and 78 transitions. Second operand has 25 states, 24 states have (on average 1.375) internal successors, (33), 21 states have internal predecessors, (33), 3 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2025-02-07 17:11:44,862 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-07 17:11:44,863 INFO L93 Difference]: Finished difference Result 121 states and 150 transitions. [2025-02-07 17:11:44,863 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2025-02-07 17:11:44,863 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 24 states have (on average 1.375) internal successors, (33), 21 states have internal predecessors, (33), 3 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Word has length 42 [2025-02-07 17:11:44,863 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-07 17:11:44,864 INFO L225 Difference]: With dead ends: 121 [2025-02-07 17:11:44,864 INFO L226 Difference]: Without dead ends: 111 [2025-02-07 17:11:44,864 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 19 SyntacticMatches, 3 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 574 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=248, Invalid=1234, Unknown=0, NotChecked=0, Total=1482 [2025-02-07 17:11:44,865 INFO L435 NwaCegarLoop]: 20 mSDtfsCounter, 53 mSDsluCounter, 215 mSDsCounter, 0 mSdLazyCounter, 562 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 55 SdHoareTripleChecker+Valid, 235 SdHoareTripleChecker+Invalid, 569 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 562 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2025-02-07 17:11:44,865 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [55 Valid, 235 Invalid, 569 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 562 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2025-02-07 17:11:44,865 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 111 states. [2025-02-07 17:11:44,880 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 111 to 82. [2025-02-07 17:11:44,880 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 82 states, 67 states have (on average 1.2388059701492538) internal successors, (83), 67 states have internal predecessors, (83), 9 states have call successors, (9), 5 states have call predecessors, (9), 5 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) [2025-02-07 17:11:44,881 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 82 states to 82 states and 101 transitions. [2025-02-07 17:11:44,881 INFO L78 Accepts]: Start accepts. Automaton has 82 states and 101 transitions. Word has length 42 [2025-02-07 17:11:44,882 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-07 17:11:44,882 INFO L471 AbstractCegarLoop]: Abstraction has 82 states and 101 transitions. [2025-02-07 17:11:44,882 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 24 states have (on average 1.375) internal successors, (33), 21 states have internal predecessors, (33), 3 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2025-02-07 17:11:44,882 INFO L276 IsEmpty]: Start isEmpty. Operand 82 states and 101 transitions. [2025-02-07 17:11:44,882 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2025-02-07 17:11:44,882 INFO L210 NwaCegarLoop]: Found error trace [2025-02-07 17:11:44,882 INFO L218 NwaCegarLoop]: trace histogram [5, 4, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-07 17:11:44,890 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 [2025-02-07 17:11:45,083 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2025-02-07 17:11:45,083 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-07 17:11:45,084 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-07 17:11:45,084 INFO L85 PathProgramCache]: Analyzing trace with hash 907574294, now seen corresponding path program 5 times [2025-02-07 17:11:45,084 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-07 17:11:45,084 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1672050447] [2025-02-07 17:11:45,084 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2025-02-07 17:11:45,084 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-07 17:11:45,089 INFO L108 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 partitioned 43 statements into 7 equivalence classes. [2025-02-07 17:11:45,096 INFO L111 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 5 check-sat command(s) and asserted 23 of 43 statements. [2025-02-07 17:11:45,097 INFO L114 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 5 check-sat command(s) [2025-02-07 17:11:45,097 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-07 17:11:45,163 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 14 proven. 20 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2025-02-07 17:11:45,163 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-07 17:11:45,163 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1672050447] [2025-02-07 17:11:45,163 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1672050447] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-07 17:11:45,163 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1893345406] [2025-02-07 17:11:45,163 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2025-02-07 17:11:45,163 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-07 17:11:45,163 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-07 17:11:45,165 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) [2025-02-07 17:11:45,167 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 [2025-02-07 17:11:45,203 INFO L108 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 partitioned 43 statements into 7 equivalence classes. [2025-02-07 17:11:45,232 INFO L111 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 5 check-sat command(s) and asserted 23 of 43 statements. [2025-02-07 17:11:45,232 INFO L114 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 5 check-sat command(s) [2025-02-07 17:11:45,233 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-07 17:11:45,233 INFO L256 TraceCheckSpWp]: Trace formula consists of 117 conjuncts, 8 conjuncts are in the unsatisfiable core [2025-02-07 17:11:45,234 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-07 17:11:45,279 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 30 proven. 12 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2025-02-07 17:11:45,279 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-07 17:11:45,329 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 13 proven. 21 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2025-02-07 17:11:45,329 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1893345406] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-07 17:11:45,329 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-07 17:11:45,329 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 13 [2025-02-07 17:11:45,329 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [434106769] [2025-02-07 17:11:45,329 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-07 17:11:45,329 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2025-02-07 17:11:45,329 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-07 17:11:45,330 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2025-02-07 17:11:45,330 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=109, Unknown=0, NotChecked=0, Total=156 [2025-02-07 17:11:45,330 INFO L87 Difference]: Start difference. First operand 82 states and 101 transitions. Second operand has 13 states, 13 states have (on average 2.923076923076923) internal successors, (38), 13 states have internal predecessors, (38), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2025-02-07 17:11:45,425 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-07 17:11:45,425 INFO L93 Difference]: Finished difference Result 178 states and 224 transitions. [2025-02-07 17:11:45,425 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2025-02-07 17:11:45,425 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 2.923076923076923) internal successors, (38), 13 states have internal predecessors, (38), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 43 [2025-02-07 17:11:45,425 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-07 17:11:45,428 INFO L225 Difference]: With dead ends: 178 [2025-02-07 17:11:45,428 INFO L226 Difference]: Without dead ends: 112 [2025-02-07 17:11:45,429 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 95 GetRequests, 77 SyntacticMatches, 5 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 63 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=66, Invalid=144, Unknown=0, NotChecked=0, Total=210 [2025-02-07 17:11:45,429 INFO L435 NwaCegarLoop]: 20 mSDtfsCounter, 5 mSDsluCounter, 57 mSDsCounter, 0 mSdLazyCounter, 92 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 77 SdHoareTripleChecker+Invalid, 109 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 92 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-02-07 17:11:45,429 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [5 Valid, 77 Invalid, 109 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 92 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-02-07 17:11:45,429 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 112 states. [2025-02-07 17:11:45,455 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 112 to 105. [2025-02-07 17:11:45,455 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 105 states, 87 states have (on average 1.2413793103448276) internal successors, (108), 87 states have internal predecessors, (108), 11 states have call successors, (11), 6 states have call predecessors, (11), 6 states have return successors, (11), 11 states have call predecessors, (11), 11 states have call successors, (11) [2025-02-07 17:11:45,456 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 105 states to 105 states and 130 transitions. [2025-02-07 17:11:45,456 INFO L78 Accepts]: Start accepts. Automaton has 105 states and 130 transitions. Word has length 43 [2025-02-07 17:11:45,456 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-07 17:11:45,456 INFO L471 AbstractCegarLoop]: Abstraction has 105 states and 130 transitions. [2025-02-07 17:11:45,457 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 2.923076923076923) internal successors, (38), 13 states have internal predecessors, (38), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2025-02-07 17:11:45,457 INFO L276 IsEmpty]: Start isEmpty. Operand 105 states and 130 transitions. [2025-02-07 17:11:45,457 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2025-02-07 17:11:45,457 INFO L210 NwaCegarLoop]: Found error trace [2025-02-07 17:11:45,457 INFO L218 NwaCegarLoop]: trace histogram [5, 4, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-07 17:11:45,463 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2025-02-07 17:11:45,662 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2025-02-07 17:11:45,662 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-07 17:11:45,662 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-07 17:11:45,662 INFO L85 PathProgramCache]: Analyzing trace with hash 1724623275, now seen corresponding path program 6 times [2025-02-07 17:11:45,663 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-07 17:11:45,663 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1837809161] [2025-02-07 17:11:45,663 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2025-02-07 17:11:45,663 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-07 17:11:45,672 INFO L108 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE partitioned 43 statements into 7 equivalence classes. [2025-02-07 17:11:45,687 INFO L111 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 7 check-sat command(s) and asserted 43 of 43 statements. [2025-02-07 17:11:45,687 INFO L114 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 7 check-sat command(s) [2025-02-07 17:11:45,687 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-07 17:11:45,759 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 5 proven. 24 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2025-02-07 17:11:45,760 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-07 17:11:45,760 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1837809161] [2025-02-07 17:11:45,760 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1837809161] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-07 17:11:45,760 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [918845302] [2025-02-07 17:11:45,761 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2025-02-07 17:11:45,761 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-07 17:11:45,761 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-07 17:11:45,765 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) [2025-02-07 17:11:45,766 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 [2025-02-07 17:11:45,806 INFO L108 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE partitioned 43 statements into 7 equivalence classes. [2025-02-07 17:11:46,032 INFO L111 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 7 check-sat command(s) and asserted 43 of 43 statements. [2025-02-07 17:11:46,032 INFO L114 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 7 check-sat command(s) [2025-02-07 17:11:46,032 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-07 17:11:46,033 INFO L256 TraceCheckSpWp]: Trace formula consists of 183 conjuncts, 8 conjuncts are in the unsatisfiable core [2025-02-07 17:11:46,035 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-07 17:11:46,090 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 13 proven. 24 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2025-02-07 17:11:46,091 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-07 17:11:46,140 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 5 proven. 24 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2025-02-07 17:11:46,140 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [918845302] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-07 17:11:46,140 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-07 17:11:46,140 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 13 [2025-02-07 17:11:46,140 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [926561635] [2025-02-07 17:11:46,140 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-07 17:11:46,141 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2025-02-07 17:11:46,141 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-07 17:11:46,141 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2025-02-07 17:11:46,141 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2025-02-07 17:11:46,141 INFO L87 Difference]: Start difference. First operand 105 states and 130 transitions. Second operand has 13 states, 13 states have (on average 3.230769230769231) internal successors, (42), 13 states have internal predecessors, (42), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2025-02-07 17:11:46,324 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-07 17:11:46,324 INFO L93 Difference]: Finished difference Result 147 states and 180 transitions. [2025-02-07 17:11:46,324 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2025-02-07 17:11:46,324 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 3.230769230769231) internal successors, (42), 13 states have internal predecessors, (42), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 43 [2025-02-07 17:11:46,324 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-07 17:11:46,325 INFO L225 Difference]: With dead ends: 147 [2025-02-07 17:11:46,325 INFO L226 Difference]: Without dead ends: 144 [2025-02-07 17:11:46,325 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 108 GetRequests, 76 SyntacticMatches, 6 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 162 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=240, Invalid=516, Unknown=0, NotChecked=0, Total=756 [2025-02-07 17:11:46,326 INFO L435 NwaCegarLoop]: 36 mSDtfsCounter, 13 mSDsluCounter, 117 mSDsCounter, 0 mSdLazyCounter, 147 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 153 SdHoareTripleChecker+Invalid, 152 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 147 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-02-07 17:11:46,326 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [13 Valid, 153 Invalid, 152 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 147 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-02-07 17:11:46,326 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 144 states. [2025-02-07 17:11:46,345 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 144 to 120. [2025-02-07 17:11:46,345 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 120 states, 99 states have (on average 1.2525252525252526) internal successors, (124), 99 states have internal predecessors, (124), 13 states have call successors, (13), 7 states have call predecessors, (13), 7 states have return successors, (13), 13 states have call predecessors, (13), 13 states have call successors, (13) [2025-02-07 17:11:46,346 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 120 states to 120 states and 150 transitions. [2025-02-07 17:11:46,346 INFO L78 Accepts]: Start accepts. Automaton has 120 states and 150 transitions. Word has length 43 [2025-02-07 17:11:46,346 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-07 17:11:46,346 INFO L471 AbstractCegarLoop]: Abstraction has 120 states and 150 transitions. [2025-02-07 17:11:46,346 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 3.230769230769231) internal successors, (42), 13 states have internal predecessors, (42), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2025-02-07 17:11:46,346 INFO L276 IsEmpty]: Start isEmpty. Operand 120 states and 150 transitions. [2025-02-07 17:11:46,347 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2025-02-07 17:11:46,347 INFO L210 NwaCegarLoop]: Found error trace [2025-02-07 17:11:46,347 INFO L218 NwaCegarLoop]: trace histogram [6, 4, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-07 17:11:46,351 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Ended with exit code 0 [2025-02-07 17:11:46,551 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13,13 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-07 17:11:46,551 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-07 17:11:46,552 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-07 17:11:46,552 INFO L85 PathProgramCache]: Analyzing trace with hash 819940690, now seen corresponding path program 7 times [2025-02-07 17:11:46,552 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-07 17:11:46,552 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1387939355] [2025-02-07 17:11:46,552 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2025-02-07 17:11:46,552 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-07 17:11:46,557 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 46 statements into 1 equivalence classes. [2025-02-07 17:11:46,564 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 46 of 46 statements. [2025-02-07 17:11:46,564 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-07 17:11:46,564 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-07 17:11:46,651 INFO L134 CoverageAnalysis]: Checked inductivity of 72 backedges. 24 proven. 23 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2025-02-07 17:11:46,651 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-07 17:11:46,651 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1387939355] [2025-02-07 17:11:46,651 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1387939355] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-07 17:11:46,651 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1116214797] [2025-02-07 17:11:46,651 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2025-02-07 17:11:46,652 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-07 17:11:46,652 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-07 17:11:46,653 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) [2025-02-07 17:11:46,655 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 [2025-02-07 17:11:46,695 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 46 statements into 1 equivalence classes. [2025-02-07 17:11:46,711 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 46 of 46 statements. [2025-02-07 17:11:46,711 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-07 17:11:46,712 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-07 17:11:46,712 INFO L256 TraceCheckSpWp]: Trace formula consists of 196 conjuncts, 8 conjuncts are in the unsatisfiable core [2025-02-07 17:11:46,713 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-07 17:11:46,793 INFO L134 CoverageAnalysis]: Checked inductivity of 72 backedges. 43 proven. 12 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2025-02-07 17:11:46,794 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-07 17:11:46,837 INFO L134 CoverageAnalysis]: Checked inductivity of 72 backedges. 35 proven. 12 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2025-02-07 17:11:46,837 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1116214797] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-07 17:11:46,837 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-07 17:11:46,837 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 14 [2025-02-07 17:11:46,837 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1997761521] [2025-02-07 17:11:46,837 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-07 17:11:46,837 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2025-02-07 17:11:46,837 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-07 17:11:46,838 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2025-02-07 17:11:46,838 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=133, Unknown=0, NotChecked=0, Total=182 [2025-02-07 17:11:46,838 INFO L87 Difference]: Start difference. First operand 120 states and 150 transitions. Second operand has 14 states, 14 states have (on average 3.357142857142857) internal successors, (47), 14 states have internal predecessors, (47), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2025-02-07 17:11:46,996 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-07 17:11:46,996 INFO L93 Difference]: Finished difference Result 144 states and 174 transitions. [2025-02-07 17:11:46,996 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2025-02-07 17:11:46,996 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 3.357142857142857) internal successors, (47), 14 states have internal predecessors, (47), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 46 [2025-02-07 17:11:46,996 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-07 17:11:46,997 INFO L225 Difference]: With dead ends: 144 [2025-02-07 17:11:46,997 INFO L226 Difference]: Without dead ends: 113 [2025-02-07 17:11:46,997 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 108 GetRequests, 82 SyntacticMatches, 5 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 128 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=139, Invalid=367, Unknown=0, NotChecked=0, Total=506 [2025-02-07 17:11:46,997 INFO L435 NwaCegarLoop]: 20 mSDtfsCounter, 8 mSDsluCounter, 55 mSDsCounter, 0 mSdLazyCounter, 119 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 75 SdHoareTripleChecker+Invalid, 135 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 119 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-02-07 17:11:46,998 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 75 Invalid, 135 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 119 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-02-07 17:11:46,998 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 113 states. [2025-02-07 17:11:47,015 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 113 to 110. [2025-02-07 17:11:47,015 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 110 states, 92 states have (on average 1.2065217391304348) internal successors, (111), 92 states have internal predecessors, (111), 11 states have call successors, (11), 6 states have call predecessors, (11), 6 states have return successors, (11), 11 states have call predecessors, (11), 11 states have call successors, (11) [2025-02-07 17:11:47,016 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 110 states to 110 states and 133 transitions. [2025-02-07 17:11:47,016 INFO L78 Accepts]: Start accepts. Automaton has 110 states and 133 transitions. Word has length 46 [2025-02-07 17:11:47,016 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-07 17:11:47,016 INFO L471 AbstractCegarLoop]: Abstraction has 110 states and 133 transitions. [2025-02-07 17:11:47,016 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 3.357142857142857) internal successors, (47), 14 states have internal predecessors, (47), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2025-02-07 17:11:47,017 INFO L276 IsEmpty]: Start isEmpty. Operand 110 states and 133 transitions. [2025-02-07 17:11:47,017 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2025-02-07 17:11:47,017 INFO L210 NwaCegarLoop]: Found error trace [2025-02-07 17:11:47,017 INFO L218 NwaCegarLoop]: trace histogram [6, 6, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-07 17:11:47,023 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2025-02-07 17:11:47,217 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14,14 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-07 17:11:47,218 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-07 17:11:47,218 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-07 17:11:47,218 INFO L85 PathProgramCache]: Analyzing trace with hash 1143407150, now seen corresponding path program 8 times [2025-02-07 17:11:47,218 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-07 17:11:47,218 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [557536075] [2025-02-07 17:11:47,218 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-02-07 17:11:47,218 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-07 17:11:47,226 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 48 statements into 2 equivalence classes. [2025-02-07 17:11:47,231 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 48 of 48 statements. [2025-02-07 17:11:47,231 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-02-07 17:11:47,231 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-07 17:11:47,302 INFO L134 CoverageAnalysis]: Checked inductivity of 85 backedges. 1 proven. 24 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2025-02-07 17:11:47,302 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-07 17:11:47,302 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [557536075] [2025-02-07 17:11:47,302 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [557536075] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-07 17:11:47,302 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1971243680] [2025-02-07 17:11:47,302 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-02-07 17:11:47,302 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-07 17:11:47,302 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-07 17:11:47,311 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) [2025-02-07 17:11:47,313 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 [2025-02-07 17:11:47,357 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 48 statements into 2 equivalence classes. [2025-02-07 17:11:47,382 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 48 of 48 statements. [2025-02-07 17:11:47,382 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-02-07 17:11:47,382 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-07 17:11:47,383 INFO L256 TraceCheckSpWp]: Trace formula consists of 210 conjuncts, 8 conjuncts are in the unsatisfiable core [2025-02-07 17:11:47,385 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-07 17:11:47,444 INFO L134 CoverageAnalysis]: Checked inductivity of 85 backedges. 11 proven. 22 refuted. 0 times theorem prover too weak. 52 trivial. 0 not checked. [2025-02-07 17:11:47,444 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-07 17:11:47,496 INFO L134 CoverageAnalysis]: Checked inductivity of 85 backedges. 3 proven. 22 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2025-02-07 17:11:47,496 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1971243680] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-07 17:11:47,496 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-07 17:11:47,496 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 20 [2025-02-07 17:11:47,496 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [225114586] [2025-02-07 17:11:47,496 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-07 17:11:47,496 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2025-02-07 17:11:47,497 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-07 17:11:47,497 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2025-02-07 17:11:47,497 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=93, Invalid=287, Unknown=0, NotChecked=0, Total=380 [2025-02-07 17:11:47,497 INFO L87 Difference]: Start difference. First operand 110 states and 133 transitions. Second operand has 20 states, 20 states have (on average 2.15) internal successors, (43), 20 states have internal predecessors, (43), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2025-02-07 17:11:47,634 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-07 17:11:47,634 INFO L93 Difference]: Finished difference Result 166 states and 204 transitions. [2025-02-07 17:11:47,635 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2025-02-07 17:11:47,635 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 2.15) internal successors, (43), 20 states have internal predecessors, (43), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 48 [2025-02-07 17:11:47,635 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-07 17:11:47,636 INFO L225 Difference]: With dead ends: 166 [2025-02-07 17:11:47,636 INFO L226 Difference]: Without dead ends: 127 [2025-02-07 17:11:47,636 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 107 GetRequests, 82 SyntacticMatches, 3 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 213 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=147, Invalid=405, Unknown=0, NotChecked=0, Total=552 [2025-02-07 17:11:47,636 INFO L435 NwaCegarLoop]: 22 mSDtfsCounter, 14 mSDsluCounter, 97 mSDsCounter, 0 mSdLazyCounter, 199 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14 SdHoareTripleChecker+Valid, 119 SdHoareTripleChecker+Invalid, 219 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 199 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-02-07 17:11:47,636 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [14 Valid, 119 Invalid, 219 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 199 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-02-07 17:11:47,636 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 127 states. [2025-02-07 17:11:47,663 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 127 to 115. [2025-02-07 17:11:47,664 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 115 states, 97 states have (on average 1.2061855670103092) internal successors, (117), 97 states have internal predecessors, (117), 11 states have call successors, (11), 6 states have call predecessors, (11), 6 states have return successors, (11), 11 states have call predecessors, (11), 11 states have call successors, (11) [2025-02-07 17:11:47,664 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 115 states to 115 states and 139 transitions. [2025-02-07 17:11:47,665 INFO L78 Accepts]: Start accepts. Automaton has 115 states and 139 transitions. Word has length 48 [2025-02-07 17:11:47,665 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-07 17:11:47,665 INFO L471 AbstractCegarLoop]: Abstraction has 115 states and 139 transitions. [2025-02-07 17:11:47,665 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 2.15) internal successors, (43), 20 states have internal predecessors, (43), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2025-02-07 17:11:47,665 INFO L276 IsEmpty]: Start isEmpty. Operand 115 states and 139 transitions. [2025-02-07 17:11:47,665 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2025-02-07 17:11:47,666 INFO L210 NwaCegarLoop]: Found error trace [2025-02-07 17:11:47,666 INFO L218 NwaCegarLoop]: trace histogram [9, 6, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-07 17:11:47,673 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2025-02-07 17:11:47,866 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2025-02-07 17:11:47,867 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-07 17:11:47,867 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-07 17:11:47,867 INFO L85 PathProgramCache]: Analyzing trace with hash -1891125941, now seen corresponding path program 9 times [2025-02-07 17:11:47,867 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-07 17:11:47,867 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [603081498] [2025-02-07 17:11:47,867 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-02-07 17:11:47,867 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-07 17:11:47,872 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 53 statements into 11 equivalence classes. [2025-02-07 17:11:47,886 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s) and asserted 42 of 53 statements. [2025-02-07 17:11:47,886 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s) [2025-02-07 17:11:47,886 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-07 17:11:47,948 INFO L134 CoverageAnalysis]: Checked inductivity of 126 backedges. 4 proven. 32 refuted. 0 times theorem prover too weak. 90 trivial. 0 not checked. [2025-02-07 17:11:47,948 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-07 17:11:47,948 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [603081498] [2025-02-07 17:11:47,948 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [603081498] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-07 17:11:47,948 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [572024897] [2025-02-07 17:11:47,948 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-02-07 17:11:47,948 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-07 17:11:47,948 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-07 17:11:47,953 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) [2025-02-07 17:11:47,954 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 [2025-02-07 17:11:47,998 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 53 statements into 11 equivalence classes. [2025-02-07 17:11:48,177 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s) and asserted 42 of 53 statements. [2025-02-07 17:11:48,178 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s) [2025-02-07 17:11:48,178 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-07 17:11:48,179 INFO L256 TraceCheckSpWp]: Trace formula consists of 176 conjuncts, 8 conjuncts are in the unsatisfiable core [2025-02-07 17:11:48,179 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-07 17:11:48,216 INFO L134 CoverageAnalysis]: Checked inductivity of 126 backedges. 15 proven. 21 refuted. 0 times theorem prover too weak. 90 trivial. 0 not checked. [2025-02-07 17:11:48,217 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-07 17:11:48,252 INFO L134 CoverageAnalysis]: Checked inductivity of 126 backedges. 15 proven. 21 refuted. 0 times theorem prover too weak. 90 trivial. 0 not checked. [2025-02-07 17:11:48,252 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [572024897] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-07 17:11:48,253 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-07 17:11:48,253 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 12 [2025-02-07 17:11:48,253 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [56150919] [2025-02-07 17:11:48,253 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-07 17:11:48,253 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2025-02-07 17:11:48,253 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-07 17:11:48,253 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2025-02-07 17:11:48,253 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=95, Unknown=0, NotChecked=0, Total=132 [2025-02-07 17:11:48,253 INFO L87 Difference]: Start difference. First operand 115 states and 139 transitions. Second operand has 12 states, 12 states have (on average 2.9166666666666665) internal successors, (35), 12 states have internal predecessors, (35), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2025-02-07 17:11:48,353 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-07 17:11:48,353 INFO L93 Difference]: Finished difference Result 121 states and 144 transitions. [2025-02-07 17:11:48,354 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2025-02-07 17:11:48,354 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 2.9166666666666665) internal successors, (35), 12 states have internal predecessors, (35), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) Word has length 53 [2025-02-07 17:11:48,354 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-07 17:11:48,354 INFO L225 Difference]: With dead ends: 121 [2025-02-07 17:11:48,354 INFO L226 Difference]: Without dead ends: 106 [2025-02-07 17:11:48,355 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 124 GetRequests, 102 SyntacticMatches, 6 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 76 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=89, Invalid=217, Unknown=0, NotChecked=0, Total=306 [2025-02-07 17:11:48,355 INFO L435 NwaCegarLoop]: 20 mSDtfsCounter, 20 mSDsluCounter, 64 mSDsCounter, 0 mSdLazyCounter, 104 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 20 SdHoareTripleChecker+Valid, 84 SdHoareTripleChecker+Invalid, 119 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 104 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-02-07 17:11:48,355 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [20 Valid, 84 Invalid, 119 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 104 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-02-07 17:11:48,355 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 106 states. [2025-02-07 17:11:48,370 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 106 to 106. [2025-02-07 17:11:48,371 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 106 states, 88 states have (on average 1.1818181818181819) internal successors, (104), 88 states have internal predecessors, (104), 11 states have call successors, (11), 6 states have call predecessors, (11), 6 states have return successors, (11), 11 states have call predecessors, (11), 11 states have call successors, (11) [2025-02-07 17:11:48,371 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 106 states to 106 states and 126 transitions. [2025-02-07 17:11:48,371 INFO L78 Accepts]: Start accepts. Automaton has 106 states and 126 transitions. Word has length 53 [2025-02-07 17:11:48,372 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-07 17:11:48,372 INFO L471 AbstractCegarLoop]: Abstraction has 106 states and 126 transitions. [2025-02-07 17:11:48,372 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 2.9166666666666665) internal successors, (35), 12 states have internal predecessors, (35), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2025-02-07 17:11:48,372 INFO L276 IsEmpty]: Start isEmpty. Operand 106 states and 126 transitions. [2025-02-07 17:11:48,372 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2025-02-07 17:11:48,372 INFO L210 NwaCegarLoop]: Found error trace [2025-02-07 17:11:48,372 INFO L218 NwaCegarLoop]: trace histogram [5, 5, 5, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-07 17:11:48,376 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Ended with exit code 0 [2025-02-07 17:11:48,573 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2025-02-07 17:11:48,574 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-07 17:11:48,574 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-07 17:11:48,574 INFO L85 PathProgramCache]: Analyzing trace with hash -625820368, now seen corresponding path program 1 times [2025-02-07 17:11:48,574 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-07 17:11:48,574 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1449234450] [2025-02-07 17:11:48,575 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-07 17:11:48,575 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-07 17:11:48,580 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 56 statements into 1 equivalence classes. [2025-02-07 17:11:48,601 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 56 of 56 statements. [2025-02-07 17:11:48,610 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-07 17:11:48,610 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unknown [2025-02-07 17:11:48,611 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [371812980] [2025-02-07 17:11:48,611 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-07 17:11:48,611 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-07 17:11:48,611 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-07 17:11:48,615 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) [2025-02-07 17:11:48,619 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 [2025-02-07 17:11:48,659 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 56 statements into 1 equivalence classes. [2025-02-07 17:11:48,874 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 56 of 56 statements. [2025-02-07 17:11:48,874 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-07 17:11:48,874 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-07 17:11:48,876 INFO L256 TraceCheckSpWp]: Trace formula consists of 210 conjuncts, 96 conjuncts are in the unsatisfiable core [2025-02-07 17:11:48,879 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-07 17:11:48,942 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2025-02-07 17:11:48,972 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 18 [2025-02-07 17:11:49,061 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-02-07 17:11:49,061 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 26 treesize of output 28 [2025-02-07 17:11:49,093 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-02-07 17:11:49,094 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 6 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 33 treesize of output 38 [2025-02-07 17:11:49,533 INFO L190 IndexEqualityManager]: detected not equals via solver [2025-02-07 17:11:49,535 INFO L190 IndexEqualityManager]: detected not equals via solver [2025-02-07 17:11:49,535 INFO L190 IndexEqualityManager]: detected not equals via solver [2025-02-07 17:11:49,536 INFO L173 IndexEqualityManager]: detected equality via solver [2025-02-07 17:11:49,546 INFO L349 Elim1Store]: treesize reduction 45, result has 19.6 percent of original size [2025-02-07 17:11:49,547 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 8 select indices, 8 select index equivalence classes, 6 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 29 case distinctions, treesize of input 74 treesize of output 98 [2025-02-07 17:11:49,901 INFO L349 Elim1Store]: treesize reduction 144, result has 16.8 percent of original size [2025-02-07 17:11:49,902 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 6 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 14 case distinctions, treesize of input 56 treesize of output 54 [2025-02-07 17:11:50,205 INFO L134 CoverageAnalysis]: Checked inductivity of 82 backedges. 11 proven. 63 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2025-02-07 17:11:50,205 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-07 17:11:51,438 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-07 17:11:51,438 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1449234450] [2025-02-07 17:11:51,438 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2025-02-07 17:11:51,438 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [371812980] [2025-02-07 17:11:51,438 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [371812980] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-07 17:11:51,438 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2025-02-07 17:11:51,438 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [32] total 32 [2025-02-07 17:11:51,438 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1029659226] [2025-02-07 17:11:51,438 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2025-02-07 17:11:51,439 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2025-02-07 17:11:51,439 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-07 17:11:51,439 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2025-02-07 17:11:51,439 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=275, Invalid=1795, Unknown=0, NotChecked=0, Total=2070 [2025-02-07 17:11:51,440 INFO L87 Difference]: Start difference. First operand 106 states and 126 transitions. Second operand has 33 states, 31 states have (on average 1.2903225806451613) internal successors, (40), 28 states have internal predecessors, (40), 4 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (5), 4 states have call predecessors, (5), 4 states have call successors, (5) [2025-02-07 17:11:52,113 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-07 17:11:52,113 INFO L93 Difference]: Finished difference Result 142 states and 166 transitions. [2025-02-07 17:11:52,113 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2025-02-07 17:11:52,114 INFO L78 Accepts]: Start accepts. Automaton has has 33 states, 31 states have (on average 1.2903225806451613) internal successors, (40), 28 states have internal predecessors, (40), 4 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (5), 4 states have call predecessors, (5), 4 states have call successors, (5) Word has length 56 [2025-02-07 17:11:52,114 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-07 17:11:52,115 INFO L225 Difference]: With dead ends: 142 [2025-02-07 17:11:52,115 INFO L226 Difference]: Without dead ends: 129 [2025-02-07 17:11:52,115 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 94 GetRequests, 37 SyntacticMatches, 5 SemanticMatches, 52 ConstructedPredicates, 0 IntricatePredicates, 1 DeprecatedPredicates, 1093 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=353, Invalid=2509, Unknown=0, NotChecked=0, Total=2862 [2025-02-07 17:11:52,116 INFO L435 NwaCegarLoop]: 22 mSDtfsCounter, 47 mSDsluCounter, 225 mSDsCounter, 0 mSdLazyCounter, 735 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 51 SdHoareTripleChecker+Valid, 247 SdHoareTripleChecker+Invalid, 736 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 735 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2025-02-07 17:11:52,116 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [51 Valid, 247 Invalid, 736 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 735 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2025-02-07 17:11:52,116 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 129 states. [2025-02-07 17:11:52,133 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 129 to 116. [2025-02-07 17:11:52,133 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 116 states, 95 states have (on average 1.1789473684210525) internal successors, (112), 95 states have internal predecessors, (112), 13 states have call successors, (13), 7 states have call predecessors, (13), 7 states have return successors, (13), 13 states have call predecessors, (13), 13 states have call successors, (13) [2025-02-07 17:11:52,133 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 116 states to 116 states and 138 transitions. [2025-02-07 17:11:52,134 INFO L78 Accepts]: Start accepts. Automaton has 116 states and 138 transitions. Word has length 56 [2025-02-07 17:11:52,134 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-07 17:11:52,134 INFO L471 AbstractCegarLoop]: Abstraction has 116 states and 138 transitions. [2025-02-07 17:11:52,134 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 33 states, 31 states have (on average 1.2903225806451613) internal successors, (40), 28 states have internal predecessors, (40), 4 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (5), 4 states have call predecessors, (5), 4 states have call successors, (5) [2025-02-07 17:11:52,134 INFO L276 IsEmpty]: Start isEmpty. Operand 116 states and 138 transitions. [2025-02-07 17:11:52,134 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2025-02-07 17:11:52,135 INFO L210 NwaCegarLoop]: Found error trace [2025-02-07 17:11:52,135 INFO L218 NwaCegarLoop]: trace histogram [5, 5, 5, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-07 17:11:52,141 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Ended with exit code 0 [2025-02-07 17:11:52,339 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2025-02-07 17:11:52,339 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-07 17:11:52,339 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-07 17:11:52,339 INFO L85 PathProgramCache]: Analyzing trace with hash -1440270480, now seen corresponding path program 2 times [2025-02-07 17:11:52,339 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-07 17:11:52,339 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [533280336] [2025-02-07 17:11:52,339 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-02-07 17:11:52,339 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-07 17:11:52,345 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 56 statements into 2 equivalence classes. [2025-02-07 17:11:52,355 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 56 of 56 statements. [2025-02-07 17:11:52,355 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-02-07 17:11:52,355 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unknown [2025-02-07 17:11:52,355 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [565197473] [2025-02-07 17:11:52,356 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-02-07 17:11:52,356 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-07 17:11:52,356 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-07 17:11:52,357 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) [2025-02-07 17:11:52,359 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 [2025-02-07 17:11:52,402 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 56 statements into 2 equivalence classes. [2025-02-07 17:11:52,703 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 56 of 56 statements. [2025-02-07 17:11:52,704 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-02-07 17:11:52,704 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-07 17:11:52,705 INFO L256 TraceCheckSpWp]: Trace formula consists of 210 conjuncts, 87 conjuncts are in the unsatisfiable core [2025-02-07 17:11:52,708 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-07 17:11:52,734 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2025-02-07 17:11:52,757 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 18 [2025-02-07 17:11:52,825 INFO L190 IndexEqualityManager]: detected not equals via solver [2025-02-07 17:11:52,826 INFO L190 IndexEqualityManager]: detected not equals via solver [2025-02-07 17:11:52,828 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-02-07 17:11:52,828 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 28 treesize of output 30 [2025-02-07 17:11:52,879 INFO L190 IndexEqualityManager]: detected not equals via solver [2025-02-07 17:11:52,879 INFO L190 IndexEqualityManager]: detected not equals via solver [2025-02-07 17:11:52,880 INFO L190 IndexEqualityManager]: detected not equals via solver [2025-02-07 17:11:52,881 INFO L190 IndexEqualityManager]: detected not equals via solver [2025-02-07 17:11:52,882 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-02-07 17:11:52,882 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 6 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 39 treesize of output 44 [2025-02-07 17:11:53,115 INFO L190 IndexEqualityManager]: detected not equals via solver [2025-02-07 17:11:53,116 INFO L190 IndexEqualityManager]: detected not equals via solver [2025-02-07 17:11:53,117 INFO L190 IndexEqualityManager]: detected not equals via solver [2025-02-07 17:11:53,117 INFO L190 IndexEqualityManager]: detected not equals via solver [2025-02-07 17:11:53,158 INFO L349 Elim1Store]: treesize reduction 156, result has 18.3 percent of original size [2025-02-07 17:11:53,158 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 6 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 14 case distinctions, treesize of input 66 treesize of output 62 [2025-02-07 17:11:53,537 INFO L190 IndexEqualityManager]: detected not equals via solver [2025-02-07 17:11:53,540 INFO L190 IndexEqualityManager]: detected not equals via solver [2025-02-07 17:11:53,541 INFO L190 IndexEqualityManager]: detected not equals via solver [2025-02-07 17:11:53,543 INFO L190 IndexEqualityManager]: detected not equals via solver [2025-02-07 17:11:53,544 INFO L190 IndexEqualityManager]: detected not equals via solver [2025-02-07 17:11:53,545 INFO L190 IndexEqualityManager]: detected not equals via solver [2025-02-07 17:11:53,545 INFO L190 IndexEqualityManager]: detected not equals via solver [2025-02-07 17:11:53,580 INFO L349 Elim1Store]: treesize reduction 80, result has 27.9 percent of original size [2025-02-07 17:11:53,580 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 8 select indices, 8 select index equivalence classes, 9 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 30 case distinctions, treesize of input 88 treesize of output 120 [2025-02-07 17:11:54,450 INFO L190 IndexEqualityManager]: detected not equals via solver [2025-02-07 17:11:54,451 INFO L190 IndexEqualityManager]: detected not equals via solver [2025-02-07 17:11:54,452 INFO L190 IndexEqualityManager]: detected not equals via solver [2025-02-07 17:11:54,453 INFO L190 IndexEqualityManager]: detected not equals via solver [2025-02-07 17:11:54,496 INFO L349 Elim1Store]: treesize reduction 28, result has 65.9 percent of original size [2025-02-07 17:11:54,496 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 6 select indices, 6 select index equivalence classes, 6 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 15 case distinctions, treesize of input 110 treesize of output 105 [2025-02-07 17:11:54,771 INFO L134 CoverageAnalysis]: Checked inductivity of 82 backedges. 30 proven. 38 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2025-02-07 17:11:54,771 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-07 17:11:55,843 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-07 17:11:55,843 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [533280336] [2025-02-07 17:11:55,843 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2025-02-07 17:11:55,843 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [565197473] [2025-02-07 17:11:55,843 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [565197473] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-07 17:11:55,843 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2025-02-07 17:11:55,843 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [27] total 27 [2025-02-07 17:11:55,843 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [7216980] [2025-02-07 17:11:55,844 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2025-02-07 17:11:55,844 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2025-02-07 17:11:55,844 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-07 17:11:55,844 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2025-02-07 17:11:55,845 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=205, Invalid=1355, Unknown=0, NotChecked=0, Total=1560 [2025-02-07 17:11:55,845 INFO L87 Difference]: Start difference. First operand 116 states and 138 transitions. Second operand has 27 states, 26 states have (on average 1.5) internal successors, (39), 25 states have internal predecessors, (39), 3 states have call successors, (4), 2 states have call predecessors, (4), 3 states have return successors, (5), 4 states have call predecessors, (5), 3 states have call successors, (5) [2025-02-07 17:11:56,924 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-07 17:11:56,924 INFO L93 Difference]: Finished difference Result 194 states and 232 transitions. [2025-02-07 17:11:56,924 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2025-02-07 17:11:56,925 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 26 states have (on average 1.5) internal successors, (39), 25 states have internal predecessors, (39), 3 states have call successors, (4), 2 states have call predecessors, (4), 3 states have return successors, (5), 4 states have call predecessors, (5), 3 states have call successors, (5) Word has length 56 [2025-02-07 17:11:56,925 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-07 17:11:56,925 INFO L225 Difference]: With dead ends: 194 [2025-02-07 17:11:56,925 INFO L226 Difference]: Without dead ends: 181 [2025-02-07 17:11:56,926 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 78 GetRequests, 27 SyntacticMatches, 6 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 709 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=309, Invalid=1853, Unknown=0, NotChecked=0, Total=2162 [2025-02-07 17:11:56,926 INFO L435 NwaCegarLoop]: 30 mSDtfsCounter, 30 mSDsluCounter, 326 mSDsCounter, 0 mSdLazyCounter, 936 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 32 SdHoareTripleChecker+Valid, 356 SdHoareTripleChecker+Invalid, 953 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 936 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2025-02-07 17:11:56,926 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [32 Valid, 356 Invalid, 953 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 936 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2025-02-07 17:11:56,927 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 181 states. [2025-02-07 17:11:56,950 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 181 to 128. [2025-02-07 17:11:56,951 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 128 states, 104 states have (on average 1.1730769230769231) internal successors, (122), 104 states have internal predecessors, (122), 15 states have call successors, (15), 8 states have call predecessors, (15), 8 states have return successors, (15), 15 states have call predecessors, (15), 15 states have call successors, (15) [2025-02-07 17:11:56,951 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 128 states to 128 states and 152 transitions. [2025-02-07 17:11:56,952 INFO L78 Accepts]: Start accepts. Automaton has 128 states and 152 transitions. Word has length 56 [2025-02-07 17:11:56,952 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-07 17:11:56,952 INFO L471 AbstractCegarLoop]: Abstraction has 128 states and 152 transitions. [2025-02-07 17:11:56,952 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 26 states have (on average 1.5) internal successors, (39), 25 states have internal predecessors, (39), 3 states have call successors, (4), 2 states have call predecessors, (4), 3 states have return successors, (5), 4 states have call predecessors, (5), 3 states have call successors, (5) [2025-02-07 17:11:56,952 INFO L276 IsEmpty]: Start isEmpty. Operand 128 states and 152 transitions. [2025-02-07 17:11:56,953 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2025-02-07 17:11:56,953 INFO L210 NwaCegarLoop]: Found error trace [2025-02-07 17:11:56,953 INFO L218 NwaCegarLoop]: trace histogram [9, 9, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-07 17:11:56,960 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Ended with exit code 0 [2025-02-07 17:11:57,153 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,18 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-07 17:11:57,154 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-07 17:11:57,155 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-07 17:11:57,155 INFO L85 PathProgramCache]: Analyzing trace with hash -618177889, now seen corresponding path program 10 times [2025-02-07 17:11:57,155 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-07 17:11:57,155 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [852422772] [2025-02-07 17:11:57,155 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-02-07 17:11:57,155 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-07 17:11:57,161 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 56 statements into 2 equivalence classes. [2025-02-07 17:11:57,185 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) and asserted 56 of 56 statements. [2025-02-07 17:11:57,188 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) [2025-02-07 17:11:57,188 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unknown [2025-02-07 17:11:57,189 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1709554628] [2025-02-07 17:11:57,190 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-02-07 17:11:57,190 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-07 17:11:57,190 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-07 17:11:57,194 INFO L229 MonitoredProcess]: Starting monitored process 19 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-07 17:11:57,197 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2025-02-07 17:11:57,248 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 56 statements into 2 equivalence classes. [2025-02-07 17:11:58,964 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) and asserted 56 of 56 statements. [2025-02-07 17:11:58,965 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) [2025-02-07 17:11:58,965 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-07 17:11:58,969 WARN L254 TraceCheckSpWp]: Trace formula consists of 258 conjuncts, 144 conjuncts are in the unsatisfiable core [2025-02-07 17:11:58,973 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-07 17:11:59,020 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2025-02-07 17:11:59,042 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 18 [2025-02-07 17:11:59,070 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-02-07 17:11:59,071 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 26 treesize of output 28 [2025-02-07 17:11:59,158 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-02-07 17:11:59,158 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 6 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 33 treesize of output 38 [2025-02-07 17:11:59,197 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-02-07 17:11:59,197 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 10 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 40 treesize of output 48 [2025-02-07 17:11:59,245 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-02-07 17:11:59,245 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 15 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 47 treesize of output 58 [2025-02-07 17:11:59,391 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-02-07 17:11:59,391 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 6 select indices, 6 select index equivalence classes, 21 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 15 case distinctions, treesize of input 54 treesize of output 68 [2025-02-07 17:11:59,449 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-02-07 17:11:59,450 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 7 select indices, 7 select index equivalence classes, 28 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 21 case distinctions, treesize of input 61 treesize of output 78 [2025-02-07 17:11:59,515 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-02-07 17:11:59,517 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 8 select indices, 8 select index equivalence classes, 36 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 28 case distinctions, treesize of input 68 treesize of output 88 [2025-02-07 17:12:00,369 INFO L190 IndexEqualityManager]: detected not equals via solver [2025-02-07 17:12:00,371 INFO L190 IndexEqualityManager]: detected not equals via solver [2025-02-07 17:12:00,371 INFO L190 IndexEqualityManager]: detected not equals via solver [2025-02-07 17:12:00,372 INFO L190 IndexEqualityManager]: detected not equals via solver [2025-02-07 17:12:00,373 INFO L190 IndexEqualityManager]: detected not equals via solver [2025-02-07 17:12:00,374 INFO L190 IndexEqualityManager]: detected not equals via solver [2025-02-07 17:12:00,448 INFO L349 Elim1Store]: treesize reduction 204, result has 27.9 percent of original size [2025-02-07 17:12:00,449 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 18 select indices, 18 select index equivalence classes, 42 disjoint index pairs (out of 153 index pairs), introduced 18 new quantified variables, introduced 159 case distinctions, treesize of input 144 treesize of output 230 [2025-02-07 17:12:01,946 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-02-07 17:12:01,946 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 9 select indices, 9 select index equivalence classes, 36 disjoint index pairs (out of 36 index pairs), introduced 9 new quantified variables, introduced 36 case distinctions, treesize of input 123 treesize of output 55 [2025-02-07 17:12:02,015 INFO L134 CoverageAnalysis]: Checked inductivity of 156 backedges. 8 proven. 144 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2025-02-07 17:12:02,015 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-07 17:12:04,424 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-07 17:12:04,425 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [852422772] [2025-02-07 17:12:04,425 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2025-02-07 17:12:04,425 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1709554628] [2025-02-07 17:12:04,425 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1709554628] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-07 17:12:04,425 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2025-02-07 17:12:04,425 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [43] total 43 [2025-02-07 17:12:04,425 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [341383634] [2025-02-07 17:12:04,425 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2025-02-07 17:12:04,425 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 43 states [2025-02-07 17:12:04,425 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-07 17:12:04,426 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 43 interpolants. [2025-02-07 17:12:04,426 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=405, Invalid=3501, Unknown=0, NotChecked=0, Total=3906 [2025-02-07 17:12:04,426 INFO L87 Difference]: Start difference. First operand 128 states and 152 transitions. Second operand has 43 states, 41 states have (on average 1.146341463414634) internal successors, (47), 39 states have internal predecessors, (47), 3 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2025-02-07 17:12:05,695 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-07 17:12:05,696 INFO L93 Difference]: Finished difference Result 190 states and 232 transitions. [2025-02-07 17:12:05,696 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2025-02-07 17:12:05,696 INFO L78 Accepts]: Start accepts. Automaton has has 43 states, 41 states have (on average 1.146341463414634) internal successors, (47), 39 states have internal predecessors, (47), 3 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Word has length 56 [2025-02-07 17:12:05,696 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-07 17:12:05,697 INFO L225 Difference]: With dead ends: 190 [2025-02-07 17:12:05,697 INFO L226 Difference]: Without dead ends: 187 [2025-02-07 17:12:05,698 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 83 GetRequests, 16 SyntacticMatches, 1 SemanticMatches, 66 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1690 ImplicationChecksByTransitivity, 4.0s TimeCoverageRelationStatistics Valid=447, Invalid=4109, Unknown=0, NotChecked=0, Total=4556 [2025-02-07 17:12:05,699 INFO L435 NwaCegarLoop]: 25 mSDtfsCounter, 60 mSDsluCounter, 277 mSDsCounter, 0 mSdLazyCounter, 1511 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 66 SdHoareTripleChecker+Valid, 302 SdHoareTripleChecker+Invalid, 1519 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 1511 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2025-02-07 17:12:05,699 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [66 Valid, 302 Invalid, 1519 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 1511 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2025-02-07 17:12:05,699 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 187 states. [2025-02-07 17:12:05,746 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 187 to 166. [2025-02-07 17:12:05,746 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 166 states, 139 states have (on average 1.1942446043165467) internal successors, (166), 139 states have internal predecessors, (166), 17 states have call successors, (17), 9 states have call predecessors, (17), 9 states have return successors, (17), 17 states have call predecessors, (17), 17 states have call successors, (17) [2025-02-07 17:12:05,747 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 166 states to 166 states and 200 transitions. [2025-02-07 17:12:05,747 INFO L78 Accepts]: Start accepts. Automaton has 166 states and 200 transitions. Word has length 56 [2025-02-07 17:12:05,748 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-07 17:12:05,748 INFO L471 AbstractCegarLoop]: Abstraction has 166 states and 200 transitions. [2025-02-07 17:12:05,748 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 43 states, 41 states have (on average 1.146341463414634) internal successors, (47), 39 states have internal predecessors, (47), 3 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2025-02-07 17:12:05,748 INFO L276 IsEmpty]: Start isEmpty. Operand 166 states and 200 transitions. [2025-02-07 17:12:05,748 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2025-02-07 17:12:05,748 INFO L210 NwaCegarLoop]: Found error trace [2025-02-07 17:12:05,749 INFO L218 NwaCegarLoop]: trace histogram [9, 9, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-07 17:12:05,757 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Forceful destruction successful, exit code 0 [2025-02-07 17:12:05,949 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,19 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-07 17:12:05,949 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-07 17:12:05,949 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-07 17:12:05,949 INFO L85 PathProgramCache]: Analyzing trace with hash 1638733118, now seen corresponding path program 5 times [2025-02-07 17:12:05,949 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-07 17:12:05,950 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [834812491] [2025-02-07 17:12:05,950 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2025-02-07 17:12:05,950 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-07 17:12:05,956 INFO L108 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 partitioned 56 statements into 11 equivalence classes. [2025-02-07 17:12:05,980 INFO L111 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 11 check-sat command(s) and asserted 56 of 56 statements. [2025-02-07 17:12:05,981 INFO L114 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 11 check-sat command(s) [2025-02-07 17:12:05,981 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unknown [2025-02-07 17:12:05,982 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1488637160] [2025-02-07 17:12:05,983 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2025-02-07 17:12:05,983 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-07 17:12:05,983 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-07 17:12:05,984 INFO L229 MonitoredProcess]: Starting monitored process 20 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-07 17:12:05,986 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2025-02-07 17:12:06,042 INFO L108 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 partitioned 56 statements into 11 equivalence classes. [2025-02-07 17:12:06,735 INFO L111 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 11 check-sat command(s) and asserted 56 of 56 statements. [2025-02-07 17:12:06,736 INFO L114 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 11 check-sat command(s) [2025-02-07 17:12:06,736 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-07 17:12:06,739 INFO L256 TraceCheckSpWp]: Trace formula consists of 260 conjuncts, 121 conjuncts are in the unsatisfiable core [2025-02-07 17:12:06,744 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-07 17:12:06,763 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2025-02-07 17:12:06,784 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 11 [2025-02-07 17:12:06,799 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-02-07 17:12:06,799 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 26 treesize of output 28 [2025-02-07 17:12:06,865 INFO L349 Elim1Store]: treesize reduction 40, result has 42.9 percent of original size [2025-02-07 17:12:06,865 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 6 case distinctions, treesize of input 35 treesize of output 48 [2025-02-07 17:12:06,899 INFO L190 IndexEqualityManager]: detected not equals via solver [2025-02-07 17:12:06,900 INFO L190 IndexEqualityManager]: detected not equals via solver [2025-02-07 17:12:06,901 INFO L190 IndexEqualityManager]: detected not equals via solver [2025-02-07 17:12:06,901 INFO L190 IndexEqualityManager]: detected not equals via solver [2025-02-07 17:12:06,902 INFO L190 IndexEqualityManager]: detected not equals via solver [2025-02-07 17:12:06,904 INFO L349 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2025-02-07 17:12:06,904 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 9 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 46 treesize of output 54 [2025-02-07 17:12:06,942 INFO L190 IndexEqualityManager]: detected not equals via solver [2025-02-07 17:12:06,943 INFO L190 IndexEqualityManager]: detected not equals via solver [2025-02-07 17:12:06,944 INFO L190 IndexEqualityManager]: detected not equals via solver [2025-02-07 17:12:06,944 INFO L190 IndexEqualityManager]: detected not equals via solver [2025-02-07 17:12:06,945 INFO L190 IndexEqualityManager]: detected not equals via solver [2025-02-07 17:12:06,946 INFO L190 IndexEqualityManager]: detected not equals via solver [2025-02-07 17:12:06,946 INFO L190 IndexEqualityManager]: detected not equals via solver [2025-02-07 17:12:06,947 INFO L190 IndexEqualityManager]: detected not equals via solver [2025-02-07 17:12:06,947 INFO L190 IndexEqualityManager]: detected not equals via solver [2025-02-07 17:12:06,949 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-02-07 17:12:06,950 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 15 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 57 treesize of output 68 [2025-02-07 17:12:07,073 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-02-07 17:12:07,073 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 6 select indices, 6 select index equivalence classes, 21 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 15 case distinctions, treesize of input 54 treesize of output 68 [2025-02-07 17:12:07,120 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-02-07 17:12:07,121 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 7 select indices, 7 select index equivalence classes, 28 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 21 case distinctions, treesize of input 61 treesize of output 78 [2025-02-07 17:12:07,180 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-02-07 17:12:07,180 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 8 select indices, 8 select index equivalence classes, 36 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 28 case distinctions, treesize of input 68 treesize of output 88 [2025-02-07 17:12:07,728 INFO L349 Elim1Store]: treesize reduction 324, result has 16.5 percent of original size [2025-02-07 17:12:07,729 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 10 select indices, 10 select index equivalence classes, 36 disjoint index pairs (out of 45 index pairs), introduced 10 new quantified variables, introduced 54 case distinctions, treesize of input 91 treesize of output 104 [2025-02-07 17:12:08,702 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-02-07 17:12:08,702 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 9 select indices, 9 select index equivalence classes, 36 disjoint index pairs (out of 36 index pairs), introduced 9 new quantified variables, introduced 36 case distinctions, treesize of input 77 treesize of output 33 [2025-02-07 17:12:08,753 INFO L134 CoverageAnalysis]: Checked inductivity of 156 backedges. 8 proven. 144 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2025-02-07 17:12:08,753 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-07 17:12:15,587 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 785 treesize of output 767 [2025-02-07 17:12:45,116 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-07 17:12:45,116 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [834812491] [2025-02-07 17:12:45,116 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2025-02-07 17:12:45,116 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1488637160] [2025-02-07 17:12:45,116 WARN L320 FreeRefinementEngine]: Global settings require throwing the following exception [2025-02-07 17:12:45,124 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Forceful destruction successful, exit code 0 [2025-02-07 17:12:45,317 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,20 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-07 17:12:45,318 FATAL L? ?]: The Plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction has thrown an exception: java.lang.AssertionError: de.uni_freiburg.informatik.ultimate.logic.SMTLIBException: line 447237 column 7: push canceled at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.DualJunctionSaa.tryToEliminate(DualJunctionSaa.java:192) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.DualJunctionSaa.tryToEliminateOne3(DualJunctionSaa.java:172) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.DualJunctionSaa.tryToEliminateOne2(DualJunctionSaa.java:151) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.DualJunctionSaa.tryToEliminateOne1(DualJunctionSaa.java:140) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.DualJunctionSaa.tryToEliminateOne0(DualJunctionSaa.java:124) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.DualJunctionSaa.tryToEliminateOne(DualJunctionSaa.java:108) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.DualJunctionSaa.tryExhaustivelyToEliminate(DualJunctionSaa.java:93) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.DualJunctionSaa.tryToEliminate(DualJunctionSaa.java:88) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.tryToEliminateOne(QuantifierPusher.java:542) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.applyNewEliminationTechniquesExhaustively(QuantifierPusher.java:521) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.applyDualJunctionEliminationTechniques(QuantifierPusher.java:514) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.tryToPushOverDualFiniteConnective(QuantifierPusher.java:325) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPushTermWalker.convert(QuantifierPushTermWalker.java:189) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPushTermWalker.convert(QuantifierPushTermWalker.java:1) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.TermContextTransformationEngine.transform(TermContextTransformationEngine.java:88) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.TermContextTransformationEngine.transform(TermContextTransformationEngine.java:84) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPushTermWalker.eliminate(QuantifierPushTermWalker.java:297) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPushTermWalker.eliminate(QuantifierPushTermWalker.java:283) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.PartialQuantifierElimination.eliminate(PartialQuantifierElimination.java:51) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.predicates.IterativePredicateTransformer$QuantifierEliminationPostprocessor.postprocess(IterativePredicateTransformer.java:234) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.predicates.IterativePredicateTransformer.applyPostprocessors(IterativePredicateTransformer.java:416) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.predicates.IterativePredicateTransformer.computeBackwardSequence(IterativePredicateTransformer.java:395) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.predicates.IterativePredicateTransformer.computeWeakestPreconditionSequence(IterativePredicateTransformer.java:267) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.TraceCheckSpWp.computeInterpolantsUsingUnsatCore(TraceCheckSpWp.java:325) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.TraceCheckSpWp.computeInterpolants(TraceCheckSpWp.java:181) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.TraceCheckSpWp.(TraceCheckSpWp.java:160) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleSpWp.construct(IpTcStrategyModuleSpWp.java:106) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleSpWp.construct(IpTcStrategyModuleSpWp.java:1) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getOrConstruct(IpTcStrategyModuleBase.java:101) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.isCorrect(IpTcStrategyModuleBase.java:57) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.checkFeasibility(AutomatonFreeRefinementEngine.java:210) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.executeStrategy(AutomatonFreeRefinementEngine.java:121) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.(AutomatonFreeRefinementEngine.java:85) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:82) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:317) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:407) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.startCegar(AbstractCegarLoop.java:342) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.runCegar(AbstractCegarLoop.java:324) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.executeCegarLoop(TraceAbstractionStarter.java:428) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseProgram(TraceAbstractionStarter.java:314) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseSequentialProgram(TraceAbstractionStarter.java:275) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:167) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:140) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:132) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:167) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:150) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:127) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:233) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:227) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:144) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:106) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:319) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) Caused by: de.uni_freiburg.informatik.ultimate.logic.SMTLIBException: line 447237 column 7: push canceled at de.uni_freiburg.informatik.ultimate.smtsolver.external.Parser$Action$.CUP$do_action(Parser.java:1511) at de.uni_freiburg.informatik.ultimate.smtsolver.external.Parser.do_action(Parser.java:701) at com.github.jhoenicke.javacup.runtime.LRParser.parse(LRParser.java:383) at de.uni_freiburg.informatik.ultimate.smtsolver.external.Executor.parse(Executor.java:258) at de.uni_freiburg.informatik.ultimate.smtsolver.external.Executor.parseSuccess(Executor.java:277) at de.uni_freiburg.informatik.ultimate.smtsolver.external.Scriptor.push(Scriptor.java:133) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.arrays.DiffWrapperScript.push(DiffWrapperScript.java:90) at de.uni_freiburg.informatik.ultimate.logic.WrapperScript.push(WrapperScript.java:148) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.scripttransfer.HistoryRecordingScript.push(HistoryRecordingScript.java:107) at de.uni_freiburg.informatik.ultimate.logic.WrapperScript.push(WrapperScript.java:148) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.UndoableWrapperScript.push(UndoableWrapperScript.java:54) at de.uni_freiburg.informatik.ultimate.logic.Util.checkSat(Util.java:48) at de.uni_freiburg.informatik.ultimate.logic.simplification.SimplifyDDA.getRedundancy(SimplifyDDA.java:620) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.simplify.SimplifyDDAWithTimeout.getRedundancy(SimplifyDDAWithTimeout.java:120) at de.uni_freiburg.informatik.ultimate.logic.simplification.SimplifyDDA$Simplifier.walk(SimplifyDDA.java:370) at de.uni_freiburg.informatik.ultimate.logic.NonRecursive.run(NonRecursive.java:115) at de.uni_freiburg.informatik.ultimate.logic.NonRecursive.run(NonRecursive.java:106) at de.uni_freiburg.informatik.ultimate.logic.simplification.SimplifyDDA.simplifyOnce(SimplifyDDA.java:649) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.simplify.SimplifyDDAWithTimeout.getSimplifiedTerm(SimplifyDDAWithTimeout.java:180) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.SmtUtils.simplify(SmtUtils.java:223) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.SmtUtils.simplifyWithStatistics(SmtUtils.java:318) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.arrays.Elim1Store.elim1(Elim1Store.java:346) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.arrays.ElimStorePlain.applyComplexEliminationRules(ElimStorePlain.java:227) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.DualJunctionSaa.tryToEliminate(DualJunctionSaa.java:190) ... 53 more [2025-02-07 17:12:45,325 INFO L158 Benchmark]: Toolchain (without parser) took 74830.73ms. Allocated memory was 142.6MB in the beginning and 12.3GB in the end (delta: 12.2GB). Free memory was 105.7MB in the beginning and 10.6GB in the end (delta: -10.5GB). Peak memory consumption was 2.4GB. Max. memory is 16.1GB. [2025-02-07 17:12:45,325 INFO L158 Benchmark]: CDTParser took 0.16ms. Allocated memory is still 201.3MB. Free memory is still 125.7MB. There was no memory consumed. Max. memory is 16.1GB. [2025-02-07 17:12:45,325 INFO L158 Benchmark]: CACSL2BoogieTranslator took 166.70ms. Allocated memory is still 142.6MB. Free memory was 105.7MB in the beginning and 94.2MB in the end (delta: 11.5MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2025-02-07 17:12:45,325 INFO L158 Benchmark]: Boogie Procedure Inliner took 20.93ms. Allocated memory is still 142.6MB. Free memory was 94.2MB in the beginning and 93.1MB in the end (delta: 1.1MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2025-02-07 17:12:45,325 INFO L158 Benchmark]: Boogie Preprocessor took 36.20ms. Allocated memory is still 142.6MB. Free memory was 93.1MB in the beginning and 92.0MB in the end (delta: 1.0MB). There was no memory consumed. Max. memory is 16.1GB. [2025-02-07 17:12:45,326 INFO L158 Benchmark]: IcfgBuilder took 277.18ms. Allocated memory is still 142.6MB. Free memory was 92.0MB in the beginning and 78.5MB in the end (delta: 13.6MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2025-02-07 17:12:45,326 INFO L158 Benchmark]: TraceAbstraction took 74322.98ms. Allocated memory was 142.6MB in the beginning and 12.3GB in the end (delta: 12.2GB). Free memory was 77.4MB in the beginning and 10.6GB in the end (delta: -10.6GB). Peak memory consumption was 2.4GB. Max. memory is 16.1GB. [2025-02-07 17:12:45,326 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.16ms. Allocated memory is still 201.3MB. Free memory is still 125.7MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 166.70ms. Allocated memory is still 142.6MB. Free memory was 105.7MB in the beginning and 94.2MB in the end (delta: 11.5MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 20.93ms. Allocated memory is still 142.6MB. Free memory was 94.2MB in the beginning and 93.1MB in the end (delta: 1.1MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Preprocessor took 36.20ms. Allocated memory is still 142.6MB. Free memory was 93.1MB in the beginning and 92.0MB in the end (delta: 1.0MB). There was no memory consumed. Max. memory is 16.1GB. * IcfgBuilder took 277.18ms. Allocated memory is still 142.6MB. Free memory was 92.0MB in the beginning and 78.5MB in the end (delta: 13.6MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * TraceAbstraction took 74322.98ms. Allocated memory was 142.6MB in the beginning and 12.3GB in the end (delta: 12.2GB). Free memory was 77.4MB in the beginning and 10.6GB in the end (delta: -10.6GB). Peak memory consumption was 2.4GB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - ExceptionOrErrorResult: AssertionError: de.uni_freiburg.informatik.ultimate.logic.SMTLIBException: line 447237 column 7: push canceled de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: AssertionError: de.uni_freiburg.informatik.ultimate.logic.SMTLIBException: line 447237 column 7: push canceled: de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.DualJunctionSaa.tryToEliminate(DualJunctionSaa.java:192) RESULT: Ultimate could not prove your program: Toolchain returned no result. [2025-02-07 17:12:45,536 WARN L435 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Forcibly destroying the process [2025-02-07 17:12:45,691 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Forceful destruction successful, exit code 137 Received shutdown request... --- End real Ultimate output --- Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### 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-patterns/array13_pattern.c -s /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Bitvector.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 78699f7813351c3df7f7fcab3bf98fffd7a92c5cc679034a9d139e9169232d7e --- Real Ultimate output --- This is Ultimate 0.3.0-?-48c9605-m [2025-02-07 17:12:47,853 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-02-07 17:12:47,935 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Bitvector.epf [2025-02-07 17:12:47,940 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-02-07 17:12:47,940 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-02-07 17:12:47,962 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-02-07 17:12:47,962 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-02-07 17:12:47,962 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-02-07 17:12:47,962 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-02-07 17:12:47,963 INFO L153 SettingsManager]: * Use memory slicer=true [2025-02-07 17:12:47,963 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-02-07 17:12:47,964 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-02-07 17:12:47,964 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-02-07 17:12:47,964 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-02-07 17:12:47,964 INFO L153 SettingsManager]: * Use SBE=true [2025-02-07 17:12:47,964 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-02-07 17:12:47,964 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2025-02-07 17:12:47,964 INFO L153 SettingsManager]: * sizeof long=4 [2025-02-07 17:12:47,965 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-02-07 17:12:47,965 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-02-07 17:12:47,965 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2025-02-07 17:12:47,965 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-02-07 17:12:47,965 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2025-02-07 17:12:47,965 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2025-02-07 17:12:47,965 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2025-02-07 17:12:47,965 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2025-02-07 17:12:47,965 INFO L153 SettingsManager]: * sizeof long double=12 [2025-02-07 17:12:47,965 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2025-02-07 17:12:47,965 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-02-07 17:12:47,965 INFO L153 SettingsManager]: * Use constant arrays=true [2025-02-07 17:12:47,965 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-02-07 17:12:47,965 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-02-07 17:12:47,965 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-02-07 17:12:47,965 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-02-07 17:12:47,965 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-02-07 17:12:47,965 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-02-07 17:12:47,965 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-02-07 17:12:47,966 INFO L153 SettingsManager]: * Compute procedure contracts=false [2025-02-07 17:12:47,966 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2025-02-07 17:12:47,966 INFO L153 SettingsManager]: * Trace refinement strategy=FOX [2025-02-07 17:12:47,966 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2025-02-07 17:12:47,966 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2025-02-07 17:12:47,966 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-02-07 17:12:47,966 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-02-07 17:12:47,966 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-02-07 17:12:47,966 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 -> 78699f7813351c3df7f7fcab3bf98fffd7a92c5cc679034a9d139e9169232d7e [2025-02-07 17:12:48,192 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-02-07 17:12:48,211 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-02-07 17:12:48,214 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-02-07 17:12:48,216 INFO L270 PluginConnector]: Initializing CDTParser... [2025-02-07 17:12:48,216 INFO L274 PluginConnector]: CDTParser initialized [2025-02-07 17:12:48,217 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/array-patterns/array13_pattern.c [2025-02-07 17:12:49,463 INFO L533 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/f119625bb/af0c3eb8ee1842bd91fc7ec4861592db/FLAGa1049f8ef [2025-02-07 17:12:49,629 INFO L384 CDTParser]: Found 1 translation units. [2025-02-07 17:12:49,629 INFO L180 CDTParser]: Scanning /storage/repos/ultimate-jdk21/releaseScripts/default/sv-benchmarks/c/array-patterns/array13_pattern.c [2025-02-07 17:12:49,635 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/f119625bb/af0c3eb8ee1842bd91fc7ec4861592db/FLAGa1049f8ef [2025-02-07 17:12:49,647 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/f119625bb/af0c3eb8ee1842bd91fc7ec4861592db [2025-02-07 17:12:49,649 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-02-07 17:12:49,650 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2025-02-07 17:12:49,651 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-02-07 17:12:49,651 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-02-07 17:12:49,653 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-02-07 17:12:49,654 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.02 05:12:49" (1/1) ... [2025-02-07 17:12:49,655 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@35a010a7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.02 05:12:49, skipping insertion in model container [2025-02-07 17:12:49,655 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.02 05:12:49" (1/1) ... [2025-02-07 17:12:49,670 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-02-07 17:12:49,775 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-patterns/array13_pattern.c[1342,1355] [2025-02-07 17:12:49,798 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-02-07 17:12:49,806 INFO L200 MainTranslator]: Completed pre-run [2025-02-07 17:12:49,815 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-patterns/array13_pattern.c[1342,1355] [2025-02-07 17:12:49,828 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-02-07 17:12:49,839 INFO L204 MainTranslator]: Completed translation [2025-02-07 17:12:49,840 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.02 05:12:49 WrapperNode [2025-02-07 17:12:49,841 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-02-07 17:12:49,841 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-02-07 17:12:49,841 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-02-07 17:12:49,841 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-02-07 17:12:49,845 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.02 05:12:49" (1/1) ... [2025-02-07 17:12:49,851 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.02 05:12:49" (1/1) ... [2025-02-07 17:12:49,866 INFO L138 Inliner]: procedures = 18, calls = 18, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 78 [2025-02-07 17:12:49,867 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-02-07 17:12:49,867 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-02-07 17:12:49,867 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-02-07 17:12:49,867 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-02-07 17:12:49,873 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.02 05:12:49" (1/1) ... [2025-02-07 17:12:49,874 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.02 05:12:49" (1/1) ... [2025-02-07 17:12:49,876 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.02 05:12:49" (1/1) ... [2025-02-07 17:12:49,885 INFO L175 MemorySlicer]: Split 6 memory accesses to 2 slices as follows [2, 4]. 67 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0]. The 2 writes are split as follows [0, 2]. [2025-02-07 17:12:49,885 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.02 05:12:49" (1/1) ... [2025-02-07 17:12:49,885 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.02 05:12:49" (1/1) ... [2025-02-07 17:12:49,894 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.02 05:12:49" (1/1) ... [2025-02-07 17:12:49,895 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.02 05:12:49" (1/1) ... [2025-02-07 17:12:49,896 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.02 05:12:49" (1/1) ... [2025-02-07 17:12:49,896 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.02 05:12:49" (1/1) ... [2025-02-07 17:12:49,897 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-02-07 17:12:49,898 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2025-02-07 17:12:49,898 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2025-02-07 17:12:49,898 INFO L274 PluginConnector]: IcfgBuilder initialized [2025-02-07 17:12:49,902 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.02 05:12:49" (1/1) ... [2025-02-07 17:12:49,907 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-02-07 17:12:49,916 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-07 17:12:49,938 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) [2025-02-07 17:12:49,945 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 [2025-02-07 17:12:49,964 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2025-02-07 17:12:49,964 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#0 [2025-02-07 17:12:49,964 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#1 [2025-02-07 17:12:49,964 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2025-02-07 17:12:49,964 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2025-02-07 17:12:49,964 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2025-02-07 17:12:49,964 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4#0 [2025-02-07 17:12:49,964 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4#1 [2025-02-07 17:12:49,964 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-02-07 17:12:49,964 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-02-07 17:12:49,964 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2025-02-07 17:12:49,964 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4#0 [2025-02-07 17:12:49,964 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4#1 [2025-02-07 17:12:50,019 INFO L257 CfgBuilder]: Building ICFG [2025-02-07 17:12:50,021 INFO L287 CfgBuilder]: Building CFG for each procedure with an implementation [2025-02-07 17:12:50,300 INFO L1324 $ProcedureCfgBuilder]: dead code at ProgramPoint L44: call ULTIMATE.dealloc(main_~#array~0#1.base, main_~#array~0#1.offset);havoc main_~#array~0#1.base, main_~#array~0#1.offset; [2025-02-07 17:12:50,324 INFO L? ?]: Removed 18 outVars from TransFormulas that were not future-live. [2025-02-07 17:12:50,324 INFO L308 CfgBuilder]: Performing block encoding [2025-02-07 17:12:50,329 INFO L332 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-02-07 17:12:50,330 INFO L337 CfgBuilder]: Removed 0 assume(true) statements. [2025-02-07 17:12:50,330 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 07.02 05:12:50 BoogieIcfgContainer [2025-02-07 17:12:50,330 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2025-02-07 17:12:50,332 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2025-02-07 17:12:50,332 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2025-02-07 17:12:50,335 INFO L274 PluginConnector]: TraceAbstraction initialized [2025-02-07 17:12:50,335 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.02 05:12:49" (1/3) ... [2025-02-07 17:12:50,335 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7f871282 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.02 05:12:50, skipping insertion in model container [2025-02-07 17:12:50,336 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.02 05:12:49" (2/3) ... [2025-02-07 17:12:50,336 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7f871282 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.02 05:12:50, skipping insertion in model container [2025-02-07 17:12:50,336 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 07.02 05:12:50" (3/3) ... [2025-02-07 17:12:50,337 INFO L128 eAbstractionObserver]: Analyzing ICFG array13_pattern.c [2025-02-07 17:12:50,360 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2025-02-07 17:12:50,361 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG array13_pattern.c that has 2 procedures, 25 locations, 1 initial locations, 5 loop locations, and 1 error locations. [2025-02-07 17:12:50,400 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-02-07 17:12:50,407 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;@6f67c3da, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-02-07 17:12:50,407 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2025-02-07 17:12:50,409 INFO L276 IsEmpty]: Start isEmpty. Operand has 25 states, 19 states have (on average 1.5263157894736843) internal successors, (29), 20 states have internal predecessors, (29), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2025-02-07 17:12:50,413 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2025-02-07 17:12:50,413 INFO L210 NwaCegarLoop]: Found error trace [2025-02-07 17:12:50,413 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-07 17:12:50,414 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-07 17:12:50,416 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-07 17:12:50,417 INFO L85 PathProgramCache]: Analyzing trace with hash -719620190, now seen corresponding path program 1 times [2025-02-07 17:12:50,422 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-02-07 17:12:50,423 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [25024209] [2025-02-07 17:12:50,423 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-07 17:12:50,423 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-07 17:12:50,423 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-07 17:12:50,425 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) [2025-02-07 17:12:50,427 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 [2025-02-07 17:12:50,471 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 13 statements into 1 equivalence classes. [2025-02-07 17:12:50,496 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 13 of 13 statements. [2025-02-07 17:12:50,496 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-07 17:12:50,496 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-07 17:12:50,503 INFO L256 TraceCheckSpWp]: Trace formula consists of 40 conjuncts, 1 conjuncts are in the unsatisfiable core [2025-02-07 17:12:50,505 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-07 17:12:50,518 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-07 17:12:50,518 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-02-07 17:12:50,519 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-02-07 17:12:50,519 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [25024209] [2025-02-07 17:12:50,519 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [25024209] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-07 17:12:50,519 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-07 17:12:50,519 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-02-07 17:12:50,520 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1944728034] [2025-02-07 17:12:50,521 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-07 17:12:50,523 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2025-02-07 17:12:50,523 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-02-07 17:12:50,534 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2025-02-07 17:12:50,534 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2025-02-07 17:12:50,535 INFO L87 Difference]: Start difference. First operand has 25 states, 19 states have (on average 1.5263157894736843) internal successors, (29), 20 states have internal predecessors, (29), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Second operand has 2 states, 2 states have (on average 5.5) internal successors, (11), 2 states have internal predecessors, (11), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2025-02-07 17:12:50,545 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-07 17:12:50,545 INFO L93 Difference]: Finished difference Result 48 states and 70 transitions. [2025-02-07 17:12:50,546 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2025-02-07 17:12:50,546 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 5.5) internal successors, (11), 2 states have internal predecessors, (11), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 13 [2025-02-07 17:12:50,546 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-07 17:12:50,550 INFO L225 Difference]: With dead ends: 48 [2025-02-07 17:12:50,550 INFO L226 Difference]: Without dead ends: 21 [2025-02-07 17:12:50,551 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2025-02-07 17:12:50,553 INFO L435 NwaCegarLoop]: 32 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 32 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-02-07 17:12:50,553 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 32 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-02-07 17:12:50,562 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21 states. [2025-02-07 17:12:50,570 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21 to 21. [2025-02-07 17:12:50,570 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21 states, 16 states have (on average 1.375) internal successors, (22), 16 states have internal predecessors, (22), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2025-02-07 17:12:50,572 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 28 transitions. [2025-02-07 17:12:50,573 INFO L78 Accepts]: Start accepts. Automaton has 21 states and 28 transitions. Word has length 13 [2025-02-07 17:12:50,573 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-07 17:12:50,573 INFO L471 AbstractCegarLoop]: Abstraction has 21 states and 28 transitions. [2025-02-07 17:12:50,574 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 5.5) internal successors, (11), 2 states have internal predecessors, (11), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2025-02-07 17:12:50,574 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states and 28 transitions. [2025-02-07 17:12:50,575 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2025-02-07 17:12:50,575 INFO L210 NwaCegarLoop]: Found error trace [2025-02-07 17:12:50,575 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-07 17:12:50,583 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2025-02-07 17:12:50,777 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-07 17:12:50,777 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-07 17:12:50,777 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-07 17:12:50,777 INFO L85 PathProgramCache]: Analyzing trace with hash -1256730776, now seen corresponding path program 1 times [2025-02-07 17:12:50,778 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-02-07 17:12:50,778 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1780502922] [2025-02-07 17:12:50,778 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-07 17:12:50,778 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-07 17:12:50,778 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-07 17:12:50,781 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) [2025-02-07 17:12:50,782 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 [2025-02-07 17:12:50,815 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 26 statements into 1 equivalence classes. [2025-02-07 17:12:50,870 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 26 of 26 statements. [2025-02-07 17:12:50,871 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-07 17:12:50,871 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-07 17:12:50,881 INFO L256 TraceCheckSpWp]: Trace formula consists of 60 conjuncts, 5 conjuncts are in the unsatisfiable core [2025-02-07 17:12:50,883 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-07 17:12:50,974 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2025-02-07 17:12:50,975 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-02-07 17:12:50,975 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-02-07 17:12:50,976 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1780502922] [2025-02-07 17:12:50,976 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1780502922] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-07 17:12:50,976 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-07 17:12:50,976 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2025-02-07 17:12:50,976 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1687772571] [2025-02-07 17:12:50,976 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-07 17:12:50,977 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-02-07 17:12:50,977 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-02-07 17:12:50,978 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-02-07 17:12:50,978 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2025-02-07 17:12:50,978 INFO L87 Difference]: Start difference. First operand 21 states and 28 transitions. Second operand has 6 states, 6 states have (on average 2.8333333333333335) internal successors, (17), 5 states have internal predecessors, (17), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2025-02-07 17:12:51,261 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-07 17:12:51,261 INFO L93 Difference]: Finished difference Result 45 states and 59 transitions. [2025-02-07 17:12:51,264 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2025-02-07 17:12:51,265 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 2.8333333333333335) internal successors, (17), 5 states have internal predecessors, (17), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 26 [2025-02-07 17:12:51,265 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-07 17:12:51,265 INFO L225 Difference]: With dead ends: 45 [2025-02-07 17:12:51,265 INFO L226 Difference]: Without dead ends: 29 [2025-02-07 17:12:51,266 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2025-02-07 17:12:51,266 INFO L435 NwaCegarLoop]: 15 mSDtfsCounter, 27 mSDsluCounter, 30 mSDsCounter, 0 mSdLazyCounter, 76 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 29 SdHoareTripleChecker+Valid, 45 SdHoareTripleChecker+Invalid, 78 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 76 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2025-02-07 17:12:51,266 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [29 Valid, 45 Invalid, 78 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 76 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2025-02-07 17:12:51,267 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2025-02-07 17:12:51,276 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 27. [2025-02-07 17:12:51,276 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27 states, 21 states have (on average 1.2857142857142858) internal successors, (27), 21 states have internal predecessors, (27), 3 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2025-02-07 17:12:51,276 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 33 transitions. [2025-02-07 17:12:51,277 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 33 transitions. Word has length 26 [2025-02-07 17:12:51,277 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-07 17:12:51,277 INFO L471 AbstractCegarLoop]: Abstraction has 27 states and 33 transitions. [2025-02-07 17:12:51,277 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 2.8333333333333335) internal successors, (17), 5 states have internal predecessors, (17), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2025-02-07 17:12:51,277 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 33 transitions. [2025-02-07 17:12:51,277 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2025-02-07 17:12:51,280 INFO L210 NwaCegarLoop]: Found error trace [2025-02-07 17:12:51,280 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-07 17:12:51,294 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2025-02-07 17:12:51,481 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-07 17:12:51,481 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-07 17:12:51,481 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-07 17:12:51,481 INFO L85 PathProgramCache]: Analyzing trace with hash -314347700, now seen corresponding path program 1 times [2025-02-07 17:12:51,482 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-02-07 17:12:51,482 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1627735320] [2025-02-07 17:12:51,482 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-07 17:12:51,482 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-07 17:12:51,482 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-07 17:12:51,485 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) [2025-02-07 17:12:51,486 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 [2025-02-07 17:12:51,518 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 30 statements into 1 equivalence classes. [2025-02-07 17:12:51,563 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 30 of 30 statements. [2025-02-07 17:12:51,564 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-07 17:12:51,564 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-07 17:12:51,574 INFO L256 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 7 conjuncts are in the unsatisfiable core [2025-02-07 17:12:51,575 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-07 17:12:51,653 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2025-02-07 17:12:51,653 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-02-07 17:12:51,653 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-02-07 17:12:51,653 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1627735320] [2025-02-07 17:12:51,653 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1627735320] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-07 17:12:51,653 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-07 17:12:51,653 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2025-02-07 17:12:51,654 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1000843494] [2025-02-07 17:12:51,654 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-07 17:12:51,654 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2025-02-07 17:12:51,654 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-02-07 17:12:51,654 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2025-02-07 17:12:51,654 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2025-02-07 17:12:51,654 INFO L87 Difference]: Start difference. First operand 27 states and 33 transitions. Second operand has 7 states, 7 states have (on average 3.0) internal successors, (21), 6 states have internal predecessors, (21), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2025-02-07 17:12:51,939 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-07 17:12:51,939 INFO L93 Difference]: Finished difference Result 52 states and 70 transitions. [2025-02-07 17:12:51,947 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2025-02-07 17:12:51,947 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 3.0) internal successors, (21), 6 states have internal predecessors, (21), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 30 [2025-02-07 17:12:51,947 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-07 17:12:51,948 INFO L225 Difference]: With dead ends: 52 [2025-02-07 17:12:51,948 INFO L226 Difference]: Without dead ends: 33 [2025-02-07 17:12:51,948 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2025-02-07 17:12:51,949 INFO L435 NwaCegarLoop]: 15 mSDtfsCounter, 37 mSDsluCounter, 37 mSDsCounter, 0 mSdLazyCounter, 88 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 39 SdHoareTripleChecker+Valid, 52 SdHoareTripleChecker+Invalid, 94 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 88 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2025-02-07 17:12:51,950 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [39 Valid, 52 Invalid, 94 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 88 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2025-02-07 17:12:51,951 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33 states. [2025-02-07 17:12:51,955 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33 to 29. [2025-02-07 17:12:51,955 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 29 states, 23 states have (on average 1.2608695652173914) internal successors, (29), 23 states have internal predecessors, (29), 3 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2025-02-07 17:12:51,956 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 35 transitions. [2025-02-07 17:12:51,957 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 35 transitions. Word has length 30 [2025-02-07 17:12:51,957 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-07 17:12:51,957 INFO L471 AbstractCegarLoop]: Abstraction has 29 states and 35 transitions. [2025-02-07 17:12:51,957 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 3.0) internal successors, (21), 6 states have internal predecessors, (21), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2025-02-07 17:12:51,957 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 35 transitions. [2025-02-07 17:12:51,958 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2025-02-07 17:12:51,958 INFO L210 NwaCegarLoop]: Found error trace [2025-02-07 17:12:51,958 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-07 17:12:51,969 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2025-02-07 17:12:52,163 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-07 17:12:52,164 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-07 17:12:52,164 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-07 17:12:52,164 INFO L85 PathProgramCache]: Analyzing trace with hash 1459650655, now seen corresponding path program 1 times [2025-02-07 17:12:52,165 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-02-07 17:12:52,165 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1118639884] [2025-02-07 17:12:52,165 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-07 17:12:52,165 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-07 17:12:52,165 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-07 17:12:52,166 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) [2025-02-07 17:12:52,168 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 [2025-02-07 17:12:52,205 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 32 statements into 1 equivalence classes. [2025-02-07 17:12:52,275 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 32 of 32 statements. [2025-02-07 17:12:52,276 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-07 17:12:52,276 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-07 17:12:52,289 INFO L256 TraceCheckSpWp]: Trace formula consists of 77 conjuncts, 12 conjuncts are in the unsatisfiable core [2025-02-07 17:12:52,291 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-07 17:12:52,754 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 8 proven. 1 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2025-02-07 17:12:52,755 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-07 17:12:52,858 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-02-07 17:12:52,859 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1118639884] [2025-02-07 17:12:52,859 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1118639884] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-07 17:12:52,859 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1242622866] [2025-02-07 17:12:52,859 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-07 17:12:52,859 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2025-02-07 17:12:52,859 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/cvc4 [2025-02-07 17:12:52,878 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2025-02-07 17:12:52,882 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (6)] Waiting until timeout for monitored process [2025-02-07 17:12:52,937 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 32 statements into 1 equivalence classes. [2025-02-07 17:12:53,103 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 32 of 32 statements. [2025-02-07 17:12:53,104 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-07 17:12:53,104 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-07 17:12:53,105 INFO L256 TraceCheckSpWp]: Trace formula consists of 77 conjuncts, 14 conjuncts are in the unsatisfiable core [2025-02-07 17:12:53,107 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-07 17:12:53,491 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 8 proven. 2 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2025-02-07 17:12:53,491 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-07 17:12:53,526 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1242622866] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-07 17:12:53,526 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2025-02-07 17:12:53,526 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 14 [2025-02-07 17:12:53,526 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [500010577] [2025-02-07 17:12:53,526 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2025-02-07 17:12:53,526 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2025-02-07 17:12:53,526 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-02-07 17:12:53,527 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2025-02-07 17:12:53,527 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=196, Unknown=0, NotChecked=0, Total=240 [2025-02-07 17:12:53,527 INFO L87 Difference]: Start difference. First operand 29 states and 35 transitions. Second operand has 14 states, 13 states have (on average 2.4615384615384617) internal successors, (32), 12 states have internal predecessors, (32), 4 states have call successors, (4), 3 states have call predecessors, (4), 3 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2025-02-07 17:12:55,045 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-07 17:12:55,045 INFO L93 Difference]: Finished difference Result 89 states and 120 transitions. [2025-02-07 17:12:55,047 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2025-02-07 17:12:55,048 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 13 states have (on average 2.4615384615384617) internal successors, (32), 12 states have internal predecessors, (32), 4 states have call successors, (4), 3 states have call predecessors, (4), 3 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) Word has length 32 [2025-02-07 17:12:55,048 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-07 17:12:55,049 INFO L225 Difference]: With dead ends: 89 [2025-02-07 17:12:55,049 INFO L226 Difference]: Without dead ends: 68 [2025-02-07 17:12:55,050 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 97 GetRequests, 67 SyntacticMatches, 3 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 165 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=138, Invalid=674, Unknown=0, NotChecked=0, Total=812 [2025-02-07 17:12:55,050 INFO L435 NwaCegarLoop]: 16 mSDtfsCounter, 71 mSDsluCounter, 97 mSDsCounter, 0 mSdLazyCounter, 280 mSolverCounterSat, 27 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 72 SdHoareTripleChecker+Valid, 113 SdHoareTripleChecker+Invalid, 307 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 27 IncrementalHoareTripleChecker+Valid, 280 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2025-02-07 17:12:55,051 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [72 Valid, 113 Invalid, 307 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [27 Valid, 280 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2025-02-07 17:12:55,051 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 68 states. [2025-02-07 17:12:55,060 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 68 to 63. [2025-02-07 17:12:55,061 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 63 states, 54 states have (on average 1.3148148148148149) internal successors, (71), 54 states have internal predecessors, (71), 5 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2025-02-07 17:12:55,061 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63 states to 63 states and 81 transitions. [2025-02-07 17:12:55,062 INFO L78 Accepts]: Start accepts. Automaton has 63 states and 81 transitions. Word has length 32 [2025-02-07 17:12:55,062 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-07 17:12:55,062 INFO L471 AbstractCegarLoop]: Abstraction has 63 states and 81 transitions. [2025-02-07 17:12:55,062 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 13 states have (on average 2.4615384615384617) internal successors, (32), 12 states have internal predecessors, (32), 4 states have call successors, (4), 3 states have call predecessors, (4), 3 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2025-02-07 17:12:55,062 INFO L276 IsEmpty]: Start isEmpty. Operand 63 states and 81 transitions. [2025-02-07 17:12:55,063 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2025-02-07 17:12:55,063 INFO L210 NwaCegarLoop]: Found error trace [2025-02-07 17:12:55,063 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-07 17:12:55,070 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (6)] Ended with exit code 0 [2025-02-07 17:12:55,276 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2025-02-07 17:12:55,464 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt,5 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-07 17:12:55,464 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-07 17:12:55,464 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-07 17:12:55,464 INFO L85 PathProgramCache]: Analyzing trace with hash 1263137150, now seen corresponding path program 1 times [2025-02-07 17:12:55,465 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-02-07 17:12:55,465 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [868706512] [2025-02-07 17:12:55,465 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-07 17:12:55,465 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-07 17:12:55,465 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-07 17:12:55,468 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) [2025-02-07 17:12:55,469 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 [2025-02-07 17:12:55,496 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 32 statements into 1 equivalence classes. [2025-02-07 17:12:55,553 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 32 of 32 statements. [2025-02-07 17:12:55,553 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-07 17:12:55,554 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-07 17:12:55,568 INFO L256 TraceCheckSpWp]: Trace formula consists of 78 conjuncts, 31 conjuncts are in the unsatisfiable core [2025-02-07 17:12:55,571 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-07 17:12:55,681 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2025-02-07 17:12:56,708 INFO L173 IndexEqualityManager]: detected equality via solver [2025-02-07 17:12:56,738 INFO L349 Elim1Store]: treesize reduction 32, result has 25.6 percent of original size [2025-02-07 17:12:56,738 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 4 case distinctions, treesize of input 52 treesize of output 42 [2025-02-07 17:12:57,164 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 8 proven. 4 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2025-02-07 17:12:57,164 INFO L312 TraceCheckSpWp]: Computing backward predicates...