./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/array-patterns/array28_pattern.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 551b0097 Calling Ultimate with: /root/.sdkman/candidates/java/21.0.5-tem/bin/java -Dosgi.configuration.area=/storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/array-patterns/array28_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 8b49bb3ea989868d96c18ff859c95dc74ebb805f64994c11617c2c5b61c8e87f --- Real Ultimate output --- This is Ultimate 0.3.0-?-551b009-m [2025-01-08 22:32:46,566 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-01-08 22:32:46,631 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2025-01-08 22:32:46,637 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-01-08 22:32:46,641 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-01-08 22:32:46,659 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-01-08 22:32:46,660 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-01-08 22:32:46,660 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-01-08 22:32:46,660 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-01-08 22:32:46,660 INFO L153 SettingsManager]: * Use memory slicer=true [2025-01-08 22:32:46,660 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-01-08 22:32:46,661 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-01-08 22:32:46,661 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-01-08 22:32:46,661 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-01-08 22:32:46,661 INFO L153 SettingsManager]: * Use SBE=true [2025-01-08 22:32:46,661 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-01-08 22:32:46,661 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2025-01-08 22:32:46,662 INFO L153 SettingsManager]: * sizeof long=4 [2025-01-08 22:32:46,662 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-01-08 22:32:46,662 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-01-08 22:32:46,662 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-01-08 22:32:46,662 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2025-01-08 22:32:46,662 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-01-08 22:32:46,662 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2025-01-08 22:32:46,662 INFO L153 SettingsManager]: * sizeof long double=12 [2025-01-08 22:32:46,662 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2025-01-08 22:32:46,663 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-01-08 22:32:46,663 INFO L153 SettingsManager]: * Use constant arrays=true [2025-01-08 22:32:46,663 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-01-08 22:32:46,663 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-01-08 22:32:46,663 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-01-08 22:32:46,663 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-01-08 22:32:46,663 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-01-08 22:32:46,663 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2025-01-08 22:32:46,663 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-01-08 22:32:46,664 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-01-08 22:32:46,664 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-01-08 22:32:46,664 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-01-08 22:32:46,664 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-01-08 22:32:46,664 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-01-08 22:32:46,664 INFO L153 SettingsManager]: * Compute procedure contracts=false [2025-01-08 22:32:46,664 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2025-01-08 22:32:46,664 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-01-08 22:32:46,664 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2025-01-08 22:32:46,665 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2025-01-08 22:32:46,665 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-01-08 22:32:46,665 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-01-08 22:32:46,665 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-01-08 22:32:46,665 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 -> 8b49bb3ea989868d96c18ff859c95dc74ebb805f64994c11617c2c5b61c8e87f [2025-01-08 22:32:46,943 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-01-08 22:32:46,949 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-01-08 22:32:46,951 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-01-08 22:32:46,952 INFO L270 PluginConnector]: Initializing CDTParser... [2025-01-08 22:32:46,952 INFO L274 PluginConnector]: CDTParser initialized [2025-01-08 22:32:46,953 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/array-patterns/array28_pattern.c [2025-01-08 22:32:48,138 INFO L533 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/fce172aef/65129411ac5f4815a7fa80a948f05bcf/FLAG7cb9f71c0 [2025-01-08 22:32:48,395 INFO L384 CDTParser]: Found 1 translation units. [2025-01-08 22:32:48,395 INFO L180 CDTParser]: Scanning /storage/repos/ultimate-jdk21/releaseScripts/default/sv-benchmarks/c/array-patterns/array28_pattern.c [2025-01-08 22:32:48,401 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/fce172aef/65129411ac5f4815a7fa80a948f05bcf/FLAG7cb9f71c0 [2025-01-08 22:32:48,412 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/fce172aef/65129411ac5f4815a7fa80a948f05bcf [2025-01-08 22:32:48,414 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-01-08 22:32:48,415 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2025-01-08 22:32:48,416 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-01-08 22:32:48,416 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-01-08 22:32:48,419 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-01-08 22:32:48,420 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.01 10:32:48" (1/1) ... [2025-01-08 22:32:48,420 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@249d040d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.01 10:32:48, skipping insertion in model container [2025-01-08 22:32:48,420 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.01 10:32:48" (1/1) ... [2025-01-08 22:32:48,434 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-01-08 22:32:48,561 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/array28_pattern.c[1246,1259] [2025-01-08 22:32:48,583 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-01-08 22:32:48,591 INFO L200 MainTranslator]: Completed pre-run [2025-01-08 22:32:48,601 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/array28_pattern.c[1246,1259] [2025-01-08 22:32:48,612 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-01-08 22:32:48,627 INFO L204 MainTranslator]: Completed translation [2025-01-08 22:32:48,629 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.01 10:32:48 WrapperNode [2025-01-08 22:32:48,630 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-01-08 22:32:48,631 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-01-08 22:32:48,631 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-01-08 22:32:48,632 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-01-08 22:32:48,637 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.01 10:32:48" (1/1) ... [2025-01-08 22:32:48,642 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.01 10:32:48" (1/1) ... [2025-01-08 22:32:48,657 INFO L138 Inliner]: procedures = 16, calls = 16, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 62 [2025-01-08 22:32:48,658 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-01-08 22:32:48,658 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-01-08 22:32:48,658 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-01-08 22:32:48,658 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-01-08 22:32:48,665 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.01 10:32:48" (1/1) ... [2025-01-08 22:32:48,666 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.01 10:32:48" (1/1) ... [2025-01-08 22:32:48,672 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.01 10:32:48" (1/1) ... [2025-01-08 22:32:48,685 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 3 writes are split as follows [0, 3]. [2025-01-08 22:32:48,686 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.01 10:32:48" (1/1) ... [2025-01-08 22:32:48,687 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.01 10:32:48" (1/1) ... [2025-01-08 22:32:48,691 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.01 10:32:48" (1/1) ... [2025-01-08 22:32:48,695 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.01 10:32:48" (1/1) ... [2025-01-08 22:32:48,700 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.01 10:32:48" (1/1) ... [2025-01-08 22:32:48,701 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.01 10:32:48" (1/1) ... [2025-01-08 22:32:48,705 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.01 10:32:48" (1/1) ... [2025-01-08 22:32:48,706 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-01-08 22:32:48,707 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2025-01-08 22:32:48,707 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2025-01-08 22:32:48,707 INFO L274 PluginConnector]: RCFGBuilder initialized [2025-01-08 22:32:48,708 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.01 10:32:48" (1/1) ... [2025-01-08 22:32:48,714 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-01-08 22:32:48,726 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-08 22:32:48,741 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2025-01-08 22:32:48,744 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2025-01-08 22:32:48,769 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2025-01-08 22:32:48,769 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2025-01-08 22:32:48,769 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2025-01-08 22:32:48,770 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2025-01-08 22:32:48,770 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2025-01-08 22:32:48,770 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2025-01-08 22:32:48,770 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-01-08 22:32:48,770 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-01-08 22:32:48,770 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2025-01-08 22:32:48,770 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2025-01-08 22:32:48,770 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2025-01-08 22:32:48,838 INFO L234 CfgBuilder]: Building ICFG [2025-01-08 22:32:48,842 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2025-01-08 22:32:48,972 INFO L? ?]: Removed 13 outVars from TransFormulas that were not future-live. [2025-01-08 22:32:48,972 INFO L283 CfgBuilder]: Performing block encoding [2025-01-08 22:32:48,980 INFO L307 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-01-08 22:32:48,980 INFO L312 CfgBuilder]: Removed 0 assume(true) statements. [2025-01-08 22:32:48,980 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 08.01 10:32:48 BoogieIcfgContainer [2025-01-08 22:32:48,980 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2025-01-08 22:32:48,982 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2025-01-08 22:32:48,982 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2025-01-08 22:32:48,985 INFO L274 PluginConnector]: TraceAbstraction initialized [2025-01-08 22:32:48,986 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 08.01 10:32:48" (1/3) ... [2025-01-08 22:32:48,986 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5542ce32 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.01 10:32:48, skipping insertion in model container [2025-01-08 22:32:48,986 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.01 10:32:48" (2/3) ... [2025-01-08 22:32:48,986 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5542ce32 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.01 10:32:48, skipping insertion in model container [2025-01-08 22:32:48,986 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 08.01 10:32:48" (3/3) ... [2025-01-08 22:32:48,987 INFO L128 eAbstractionObserver]: Analyzing ICFG array28_pattern.c [2025-01-08 22:32:48,997 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2025-01-08 22:32:48,998 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG array28_pattern.c that has 1 procedures, 18 locations, 1 initial locations, 4 loop locations, and 1 error locations. [2025-01-08 22:32:49,043 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-01-08 22:32:49,051 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;@70dcb2d, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-01-08 22:32:49,052 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2025-01-08 22:32:49,055 INFO L276 IsEmpty]: Start isEmpty. Operand has 18 states, 16 states have (on average 1.5625) internal successors, (25), 17 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-08 22:32:49,059 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2025-01-08 22:32:49,059 INFO L210 NwaCegarLoop]: Found error trace [2025-01-08 22:32:49,059 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2025-01-08 22:32:49,060 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-01-08 22:32:49,065 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-08 22:32:49,065 INFO L85 PathProgramCache]: Analyzing trace with hash 120038229, now seen corresponding path program 1 times [2025-01-08 22:32:49,071 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-08 22:32:49,074 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [294970092] [2025-01-08 22:32:49,074 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-08 22:32:49,075 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-08 22:32:49,141 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 8 statements into 1 equivalence classes. [2025-01-08 22:32:49,151 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 8 of 8 statements. [2025-01-08 22:32:49,152 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-08 22:32:49,152 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-08 22:32:49,191 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-08 22:32:49,191 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-08 22:32:49,191 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [294970092] [2025-01-08 22:32:49,191 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [294970092] provided 1 perfect and 0 imperfect interpolant sequences [2025-01-08 22:32:49,192 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-01-08 22:32:49,192 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-01-08 22:32:49,193 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [525280260] [2025-01-08 22:32:49,193 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-01-08 22:32:49,196 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2025-01-08 22:32:49,197 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-08 22:32:49,210 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2025-01-08 22:32:49,210 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2025-01-08 22:32:49,212 INFO L87 Difference]: Start difference. First operand has 18 states, 16 states have (on average 1.5625) internal successors, (25), 17 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-08 22:32:49,219 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-08 22:32:49,219 INFO L93 Difference]: Finished difference Result 33 states and 46 transitions. [2025-01-08 22:32:49,220 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2025-01-08 22:32:49,221 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8 [2025-01-08 22:32:49,221 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-08 22:32:49,225 INFO L225 Difference]: With dead ends: 33 [2025-01-08 22:32:49,225 INFO L226 Difference]: Without dead ends: 14 [2025-01-08 22:32:49,227 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2025-01-08 22:32:49,229 INFO L435 NwaCegarLoop]: 23 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, 23 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-01-08 22:32:49,230 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 23 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-01-08 22:32:49,240 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14 states. [2025-01-08 22:32:49,248 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14 to 14. [2025-01-08 22:32:49,249 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14 states, 13 states have (on average 1.4615384615384615) internal successors, (19), 13 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-08 22:32:49,252 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 19 transitions. [2025-01-08 22:32:49,253 INFO L78 Accepts]: Start accepts. Automaton has 14 states and 19 transitions. Word has length 8 [2025-01-08 22:32:49,253 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-08 22:32:49,253 INFO L471 AbstractCegarLoop]: Abstraction has 14 states and 19 transitions. [2025-01-08 22:32:49,254 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-08 22:32:49,254 INFO L276 IsEmpty]: Start isEmpty. Operand 14 states and 19 transitions. [2025-01-08 22:32:49,254 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2025-01-08 22:32:49,254 INFO L210 NwaCegarLoop]: Found error trace [2025-01-08 22:32:49,254 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2025-01-08 22:32:49,254 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2025-01-08 22:32:49,256 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-01-08 22:32:49,257 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-08 22:32:49,257 INFO L85 PathProgramCache]: Analyzing trace with hash 177296531, now seen corresponding path program 1 times [2025-01-08 22:32:49,257 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-08 22:32:49,257 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1484440935] [2025-01-08 22:32:49,257 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-08 22:32:49,259 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-08 22:32:49,271 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 8 statements into 1 equivalence classes. [2025-01-08 22:32:49,285 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 8 of 8 statements. [2025-01-08 22:32:49,285 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-08 22:32:49,285 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-08 22:32:49,421 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-08 22:32:49,421 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-08 22:32:49,421 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1484440935] [2025-01-08 22:32:49,421 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1484440935] provided 1 perfect and 0 imperfect interpolant sequences [2025-01-08 22:32:49,421 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-01-08 22:32:49,421 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-01-08 22:32:49,422 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [752007694] [2025-01-08 22:32:49,422 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-01-08 22:32:49,423 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-01-08 22:32:49,423 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-08 22:32:49,423 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-01-08 22:32:49,423 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-01-08 22:32:49,424 INFO L87 Difference]: Start difference. First operand 14 states and 19 transitions. Second operand has 4 states, 4 states have (on average 2.0) internal successors, (8), 4 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-08 22:32:49,443 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-08 22:32:49,443 INFO L93 Difference]: Finished difference Result 19 states and 25 transitions. [2025-01-08 22:32:49,444 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-01-08 22:32:49,444 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 2.0) internal successors, (8), 4 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8 [2025-01-08 22:32:49,444 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-08 22:32:49,445 INFO L225 Difference]: With dead ends: 19 [2025-01-08 22:32:49,445 INFO L226 Difference]: Without dead ends: 16 [2025-01-08 22:32:49,445 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-01-08 22:32:49,446 INFO L435 NwaCegarLoop]: 17 mSDtfsCounter, 10 mSDsluCounter, 22 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 39 SdHoareTripleChecker+Invalid, 8 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-01-08 22:32:49,447 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [10 Valid, 39 Invalid, 8 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-01-08 22:32:49,448 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16 states. [2025-01-08 22:32:49,451 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16 to 16. [2025-01-08 22:32:49,451 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16 states, 15 states have (on average 1.4666666666666666) internal successors, (22), 15 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-08 22:32:49,452 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 22 transitions. [2025-01-08 22:32:49,453 INFO L78 Accepts]: Start accepts. Automaton has 16 states and 22 transitions. Word has length 8 [2025-01-08 22:32:49,453 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-08 22:32:49,453 INFO L471 AbstractCegarLoop]: Abstraction has 16 states and 22 transitions. [2025-01-08 22:32:49,453 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 2.0) internal successors, (8), 4 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-08 22:32:49,453 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states and 22 transitions. [2025-01-08 22:32:49,454 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2025-01-08 22:32:49,454 INFO L210 NwaCegarLoop]: Found error trace [2025-01-08 22:32:49,454 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-08 22:32:49,454 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2025-01-08 22:32:49,454 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-01-08 22:32:49,454 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-08 22:32:49,454 INFO L85 PathProgramCache]: Analyzing trace with hash -1204480668, now seen corresponding path program 1 times [2025-01-08 22:32:49,455 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-08 22:32:49,455 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [810849995] [2025-01-08 22:32:49,455 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-08 22:32:49,455 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-08 22:32:49,470 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 11 statements into 1 equivalence classes. [2025-01-08 22:32:49,485 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 11 of 11 statements. [2025-01-08 22:32:49,487 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-08 22:32:49,487 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-08 22:32:49,597 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-01-08 22:32:49,598 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-08 22:32:49,598 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [810849995] [2025-01-08 22:32:49,598 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [810849995] provided 1 perfect and 0 imperfect interpolant sequences [2025-01-08 22:32:49,599 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-01-08 22:32:49,599 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-01-08 22:32:49,599 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1579255721] [2025-01-08 22:32:49,599 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-01-08 22:32:49,600 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-01-08 22:32:49,600 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-08 22:32:49,601 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-01-08 22:32:49,601 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2025-01-08 22:32:49,601 INFO L87 Difference]: Start difference. First operand 16 states and 22 transitions. Second operand has 4 states, 4 states have (on average 2.75) internal successors, (11), 4 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-08 22:32:49,665 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-08 22:32:49,666 INFO L93 Difference]: Finished difference Result 32 states and 46 transitions. [2025-01-08 22:32:49,666 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-01-08 22:32:49,666 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 2.75) internal successors, (11), 4 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 11 [2025-01-08 22:32:49,667 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-08 22:32:49,667 INFO L225 Difference]: With dead ends: 32 [2025-01-08 22:32:49,668 INFO L226 Difference]: Without dead ends: 24 [2025-01-08 22:32:49,668 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2025-01-08 22:32:49,669 INFO L435 NwaCegarLoop]: 9 mSDtfsCounter, 9 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 31 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 16 SdHoareTripleChecker+Invalid, 32 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 31 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-01-08 22:32:49,669 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 16 Invalid, 32 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 31 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-01-08 22:32:49,671 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24 states. [2025-01-08 22:32:49,674 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24 to 17. [2025-01-08 22:32:49,675 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17 states, 16 states have (on average 1.4375) internal successors, (23), 16 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-08 22:32:49,675 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 23 transitions. [2025-01-08 22:32:49,675 INFO L78 Accepts]: Start accepts. Automaton has 17 states and 23 transitions. Word has length 11 [2025-01-08 22:32:49,675 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-08 22:32:49,675 INFO L471 AbstractCegarLoop]: Abstraction has 17 states and 23 transitions. [2025-01-08 22:32:49,676 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 2.75) internal successors, (11), 4 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-08 22:32:49,676 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states and 23 transitions. [2025-01-08 22:32:49,676 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2025-01-08 22:32:49,676 INFO L210 NwaCegarLoop]: Found error trace [2025-01-08 22:32:49,676 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-08 22:32:49,676 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2025-01-08 22:32:49,677 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-01-08 22:32:49,677 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-08 22:32:49,677 INFO L85 PathProgramCache]: Analyzing trace with hash -923011918, now seen corresponding path program 1 times [2025-01-08 22:32:49,677 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-08 22:32:49,678 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [570570525] [2025-01-08 22:32:49,678 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-08 22:32:49,678 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-08 22:32:49,690 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 13 statements into 1 equivalence classes. [2025-01-08 22:32:49,703 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 13 of 13 statements. [2025-01-08 22:32:49,704 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-08 22:32:49,704 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-08 22:32:49,778 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2025-01-08 22:32:49,779 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-08 22:32:49,779 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [570570525] [2025-01-08 22:32:49,779 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [570570525] provided 1 perfect and 0 imperfect interpolant sequences [2025-01-08 22:32:49,779 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-01-08 22:32:49,779 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-01-08 22:32:49,779 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1113741022] [2025-01-08 22:32:49,780 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-01-08 22:32:49,780 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-01-08 22:32:49,780 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-08 22:32:49,780 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-01-08 22:32:49,781 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2025-01-08 22:32:49,781 INFO L87 Difference]: Start difference. First operand 17 states and 23 transitions. Second operand has 4 states, 4 states have (on average 3.25) internal successors, (13), 4 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-08 22:32:49,859 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-08 22:32:49,859 INFO L93 Difference]: Finished difference Result 38 states and 57 transitions. [2025-01-08 22:32:49,859 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-01-08 22:32:49,860 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 3.25) internal successors, (13), 4 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 13 [2025-01-08 22:32:49,860 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-08 22:32:49,860 INFO L225 Difference]: With dead ends: 38 [2025-01-08 22:32:49,860 INFO L226 Difference]: Without dead ends: 26 [2025-01-08 22:32:49,860 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2025-01-08 22:32:49,861 INFO L435 NwaCegarLoop]: 8 mSDtfsCounter, 12 mSDsluCounter, 9 mSDsCounter, 0 mSdLazyCounter, 38 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 17 SdHoareTripleChecker+Invalid, 43 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 38 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-01-08 22:32:49,861 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 17 Invalid, 43 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 38 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-01-08 22:32:49,862 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states. [2025-01-08 22:32:49,864 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 20. [2025-01-08 22:32:49,864 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20 states, 19 states have (on average 1.3157894736842106) internal successors, (25), 19 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-08 22:32:49,865 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 25 transitions. [2025-01-08 22:32:49,865 INFO L78 Accepts]: Start accepts. Automaton has 20 states and 25 transitions. Word has length 13 [2025-01-08 22:32:49,865 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-08 22:32:49,865 INFO L471 AbstractCegarLoop]: Abstraction has 20 states and 25 transitions. [2025-01-08 22:32:49,865 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 3.25) internal successors, (13), 4 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-08 22:32:49,865 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 25 transitions. [2025-01-08 22:32:49,866 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2025-01-08 22:32:49,866 INFO L210 NwaCegarLoop]: Found error trace [2025-01-08 22:32:49,866 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-08 22:32:49,866 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2025-01-08 22:32:49,866 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-01-08 22:32:49,867 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-08 22:32:49,867 INFO L85 PathProgramCache]: Analyzing trace with hash -1886967303, now seen corresponding path program 1 times [2025-01-08 22:32:49,867 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-08 22:32:49,867 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [685480536] [2025-01-08 22:32:49,867 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-08 22:32:49,867 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-08 22:32:49,875 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 17 statements into 1 equivalence classes. [2025-01-08 22:32:49,890 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 17 of 17 statements. [2025-01-08 22:32:49,890 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-08 22:32:49,890 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unknown [2025-01-08 22:32:49,892 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [830596311] [2025-01-08 22:32:49,892 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-08 22:32:49,892 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-08 22:32:49,892 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-08 22:32:49,895 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-01-08 22:32:49,897 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2025-01-08 22:32:49,934 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 17 statements into 1 equivalence classes. [2025-01-08 22:32:49,950 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 17 of 17 statements. [2025-01-08 22:32:49,951 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-08 22:32:49,951 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-08 22:32:49,952 INFO L256 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 21 conjuncts are in the unsatisfiable core [2025-01-08 22:32:49,957 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-08 22:32:50,039 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 [2025-01-08 22:32:50,139 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-08 22:32:50,140 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-01-08 22:32:50,233 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 21 treesize of output 19 [2025-01-08 22:32:50,238 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 28 treesize of output 26 [2025-01-08 22:32:50,280 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-08 22:32:50,280 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-08 22:32:50,280 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [685480536] [2025-01-08 22:32:50,281 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2025-01-08 22:32:50,281 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [830596311] [2025-01-08 22:32:50,281 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [830596311] provided 0 perfect and 2 imperfect interpolant sequences [2025-01-08 22:32:50,282 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2025-01-08 22:32:50,282 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 12 [2025-01-08 22:32:50,282 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1478732306] [2025-01-08 22:32:50,282 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2025-01-08 22:32:50,282 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2025-01-08 22:32:50,283 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-08 22:32:50,283 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2025-01-08 22:32:50,284 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=93, Unknown=0, NotChecked=0, Total=132 [2025-01-08 22:32:50,284 INFO L87 Difference]: Start difference. First operand 20 states and 25 transitions. Second operand has 12 states, 12 states have (on average 1.9166666666666667) internal successors, (23), 12 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-08 22:32:50,488 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-08 22:32:50,488 INFO L93 Difference]: Finished difference Result 40 states and 54 transitions. [2025-01-08 22:32:50,488 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2025-01-08 22:32:50,489 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 1.9166666666666667) internal successors, (23), 12 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 17 [2025-01-08 22:32:50,489 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-08 22:32:50,490 INFO L225 Difference]: With dead ends: 40 [2025-01-08 22:32:50,490 INFO L226 Difference]: Without dead ends: 37 [2025-01-08 22:32:50,490 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 20 SyntacticMatches, 2 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 43 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=64, Invalid=146, Unknown=0, NotChecked=0, Total=210 [2025-01-08 22:32:50,491 INFO L435 NwaCegarLoop]: 9 mSDtfsCounter, 22 mSDsluCounter, 51 mSDsCounter, 0 mSdLazyCounter, 142 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 22 SdHoareTripleChecker+Valid, 60 SdHoareTripleChecker+Invalid, 155 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 142 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-01-08 22:32:50,491 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [22 Valid, 60 Invalid, 155 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 142 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-01-08 22:32:50,492 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37 states. [2025-01-08 22:32:50,497 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 33. [2025-01-08 22:32:50,498 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 33 states, 32 states have (on average 1.4375) internal successors, (46), 32 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-08 22:32:50,498 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 46 transitions. [2025-01-08 22:32:50,498 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 46 transitions. Word has length 17 [2025-01-08 22:32:50,498 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-08 22:32:50,499 INFO L471 AbstractCegarLoop]: Abstraction has 33 states and 46 transitions. [2025-01-08 22:32:50,499 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 1.9166666666666667) internal successors, (23), 12 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-08 22:32:50,499 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 46 transitions. [2025-01-08 22:32:50,499 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2025-01-08 22:32:50,499 INFO L210 NwaCegarLoop]: Found error trace [2025-01-08 22:32:50,500 INFO L218 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-08 22:32:50,507 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2025-01-08 22:32:50,700 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,2 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-08 22:32:50,701 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-01-08 22:32:50,701 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-08 22:32:50,701 INFO L85 PathProgramCache]: Analyzing trace with hash 1631646232, now seen corresponding path program 2 times [2025-01-08 22:32:50,701 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-08 22:32:50,701 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1734623477] [2025-01-08 22:32:50,701 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-01-08 22:32:50,701 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-08 22:32:50,710 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 18 statements into 2 equivalence classes. [2025-01-08 22:32:50,719 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 18 of 18 statements. [2025-01-08 22:32:50,719 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-01-08 22:32:50,719 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-08 22:32:50,819 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 4 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-08 22:32:50,820 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-08 22:32:50,820 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1734623477] [2025-01-08 22:32:50,820 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1734623477] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-08 22:32:50,820 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [837927033] [2025-01-08 22:32:50,820 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-01-08 22:32:50,820 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-08 22:32:50,821 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-08 22:32:50,823 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-01-08 22:32:50,825 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2025-01-08 22:32:50,861 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 18 statements into 2 equivalence classes. [2025-01-08 22:32:50,876 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 18 of 18 statements. [2025-01-08 22:32:50,876 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-01-08 22:32:50,876 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-08 22:32:50,878 INFO L256 TraceCheckSpWp]: Trace formula consists of 96 conjuncts, 6 conjuncts are in the unsatisfiable core [2025-01-08 22:32:50,879 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-08 22:32:50,968 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-01-08 22:32:50,969 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-01-08 22:32:51,024 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-01-08 22:32:51,025 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [837927033] provided 0 perfect and 2 imperfect interpolant sequences [2025-01-08 22:32:51,025 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-01-08 22:32:51,025 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 12 [2025-01-08 22:32:51,025 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [588503927] [2025-01-08 22:32:51,025 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-01-08 22:32:51,025 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2025-01-08 22:32:51,025 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-08 22:32:51,026 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2025-01-08 22:32:51,026 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=97, Unknown=0, NotChecked=0, Total=132 [2025-01-08 22:32:51,026 INFO L87 Difference]: Start difference. First operand 33 states and 46 transitions. Second operand has 12 states, 12 states have (on average 2.5833333333333335) internal successors, (31), 12 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-08 22:32:51,280 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-08 22:32:51,281 INFO L93 Difference]: Finished difference Result 126 states and 202 transitions. [2025-01-08 22:32:51,281 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2025-01-08 22:32:51,281 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 2.5833333333333335) internal successors, (31), 12 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 18 [2025-01-08 22:32:51,281 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-08 22:32:51,283 INFO L225 Difference]: With dead ends: 126 [2025-01-08 22:32:51,283 INFO L226 Difference]: Without dead ends: 105 [2025-01-08 22:32:51,284 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 28 SyntacticMatches, 3 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 82 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=100, Invalid=280, Unknown=0, NotChecked=0, Total=380 [2025-01-08 22:32:51,284 INFO L435 NwaCegarLoop]: 6 mSDtfsCounter, 62 mSDsluCounter, 25 mSDsCounter, 0 mSdLazyCounter, 159 mSolverCounterSat, 46 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 62 SdHoareTripleChecker+Valid, 31 SdHoareTripleChecker+Invalid, 205 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 46 IncrementalHoareTripleChecker+Valid, 159 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2025-01-08 22:32:51,284 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [62 Valid, 31 Invalid, 205 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [46 Valid, 159 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2025-01-08 22:32:51,285 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 105 states. [2025-01-08 22:32:51,302 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 105 to 74. [2025-01-08 22:32:51,305 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 74 states, 73 states have (on average 1.547945205479452) internal successors, (113), 73 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-08 22:32:51,305 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 74 states to 74 states and 113 transitions. [2025-01-08 22:32:51,307 INFO L78 Accepts]: Start accepts. Automaton has 74 states and 113 transitions. Word has length 18 [2025-01-08 22:32:51,307 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-08 22:32:51,307 INFO L471 AbstractCegarLoop]: Abstraction has 74 states and 113 transitions. [2025-01-08 22:32:51,307 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 2.5833333333333335) internal successors, (31), 12 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-08 22:32:51,308 INFO L276 IsEmpty]: Start isEmpty. Operand 74 states and 113 transitions. [2025-01-08 22:32:51,308 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2025-01-08 22:32:51,309 INFO L210 NwaCegarLoop]: Found error trace [2025-01-08 22:32:51,309 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-08 22:32:51,316 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2025-01-08 22:32:51,509 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,3 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-08 22:32:51,510 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-01-08 22:32:51,510 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-08 22:32:51,510 INFO L85 PathProgramCache]: Analyzing trace with hash 1948352062, now seen corresponding path program 3 times [2025-01-08 22:32:51,510 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-08 22:32:51,510 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [701074340] [2025-01-08 22:32:51,510 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-01-08 22:32:51,511 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-08 22:32:51,521 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 20 statements into 4 equivalence classes. [2025-01-08 22:32:51,538 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) and asserted 20 of 20 statements. [2025-01-08 22:32:51,540 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2025-01-08 22:32:51,540 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-08 22:32:51,621 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2025-01-08 22:32:51,621 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-08 22:32:51,621 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [701074340] [2025-01-08 22:32:51,621 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [701074340] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-08 22:32:51,622 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1078206133] [2025-01-08 22:32:51,622 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-01-08 22:32:51,622 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-08 22:32:51,622 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-08 22:32:51,624 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-01-08 22:32:51,626 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2025-01-08 22:32:51,661 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 20 statements into 4 equivalence classes. [2025-01-08 22:32:51,680 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) and asserted 20 of 20 statements. [2025-01-08 22:32:51,680 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2025-01-08 22:32:51,681 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-08 22:32:51,682 INFO L256 TraceCheckSpWp]: Trace formula consists of 102 conjuncts, 6 conjuncts are in the unsatisfiable core [2025-01-08 22:32:51,683 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-08 22:32:51,741 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 7 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2025-01-08 22:32:51,741 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-01-08 22:32:51,781 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 7 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2025-01-08 22:32:51,782 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1078206133] provided 0 perfect and 2 imperfect interpolant sequences [2025-01-08 22:32:51,782 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-01-08 22:32:51,782 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 10 [2025-01-08 22:32:51,782 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1186081507] [2025-01-08 22:32:51,782 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-01-08 22:32:51,783 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2025-01-08 22:32:51,783 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-08 22:32:51,783 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2025-01-08 22:32:51,784 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2025-01-08 22:32:51,784 INFO L87 Difference]: Start difference. First operand 74 states and 113 transitions. Second operand has 10 states, 10 states have (on average 3.6) internal successors, (36), 10 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-08 22:32:51,878 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-08 22:32:51,879 INFO L93 Difference]: Finished difference Result 130 states and 201 transitions. [2025-01-08 22:32:51,882 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-01-08 22:32:51,882 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 3.6) internal successors, (36), 10 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2025-01-08 22:32:51,882 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-08 22:32:51,884 INFO L225 Difference]: With dead ends: 130 [2025-01-08 22:32:51,885 INFO L226 Difference]: Without dead ends: 118 [2025-01-08 22:32:51,886 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 34 SyntacticMatches, 2 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 29 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=37, Invalid=73, Unknown=0, NotChecked=0, Total=110 [2025-01-08 22:32:51,886 INFO L435 NwaCegarLoop]: 9 mSDtfsCounter, 13 mSDsluCounter, 22 mSDsCounter, 0 mSdLazyCounter, 69 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 31 SdHoareTripleChecker+Invalid, 72 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 69 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-01-08 22:32:51,887 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [13 Valid, 31 Invalid, 72 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 69 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-01-08 22:32:51,887 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 118 states. [2025-01-08 22:32:51,904 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 118 to 76. [2025-01-08 22:32:51,905 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 76 states, 75 states have (on average 1.5333333333333334) internal successors, (115), 75 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-08 22:32:51,907 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 76 states to 76 states and 115 transitions. [2025-01-08 22:32:51,908 INFO L78 Accepts]: Start accepts. Automaton has 76 states and 115 transitions. Word has length 20 [2025-01-08 22:32:51,908 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-08 22:32:51,908 INFO L471 AbstractCegarLoop]: Abstraction has 76 states and 115 transitions. [2025-01-08 22:32:51,909 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 3.6) internal successors, (36), 10 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-08 22:32:51,909 INFO L276 IsEmpty]: Start isEmpty. Operand 76 states and 115 transitions. [2025-01-08 22:32:51,909 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2025-01-08 22:32:51,911 INFO L210 NwaCegarLoop]: Found error trace [2025-01-08 22:32:51,911 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-08 22:32:51,918 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2025-01-08 22:32:52,111 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,4 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-08 22:32:52,112 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-01-08 22:32:52,112 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-08 22:32:52,112 INFO L85 PathProgramCache]: Analyzing trace with hash -1116664464, now seen corresponding path program 4 times [2025-01-08 22:32:52,112 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-08 22:32:52,112 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1545666197] [2025-01-08 22:32:52,112 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-01-08 22:32:52,112 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-08 22:32:52,120 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 22 statements into 2 equivalence classes. [2025-01-08 22:32:52,124 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 1 check-sat command(s) and asserted 19 of 22 statements. [2025-01-08 22:32:52,125 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 1 check-sat command(s) [2025-01-08 22:32:52,125 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-08 22:32:52,170 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 5 proven. 1 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2025-01-08 22:32:52,170 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-08 22:32:52,170 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1545666197] [2025-01-08 22:32:52,170 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1545666197] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-08 22:32:52,170 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [711592578] [2025-01-08 22:32:52,170 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-01-08 22:32:52,171 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-08 22:32:52,171 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-08 22:32:52,173 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-01-08 22:32:52,176 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2025-01-08 22:32:52,215 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 22 statements into 2 equivalence classes. [2025-01-08 22:32:52,223 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 1 check-sat command(s) and asserted 19 of 22 statements. [2025-01-08 22:32:52,224 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 1 check-sat command(s) [2025-01-08 22:32:52,224 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-08 22:32:52,224 INFO L256 TraceCheckSpWp]: Trace formula consists of 61 conjuncts, 5 conjuncts are in the unsatisfiable core [2025-01-08 22:32:52,225 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-08 22:32:52,260 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2025-01-08 22:32:52,260 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-01-08 22:32:52,260 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [711592578] provided 1 perfect and 0 imperfect interpolant sequences [2025-01-08 22:32:52,260 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-01-08 22:32:52,260 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 8 [2025-01-08 22:32:52,260 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1039285662] [2025-01-08 22:32:52,261 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-01-08 22:32:52,261 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-01-08 22:32:52,261 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-08 22:32:52,261 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-01-08 22:32:52,261 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2025-01-08 22:32:52,261 INFO L87 Difference]: Start difference. First operand 76 states and 115 transitions. Second operand has 5 states, 5 states have (on average 3.8) internal successors, (19), 5 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-08 22:32:52,320 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-08 22:32:52,320 INFO L93 Difference]: Finished difference Result 160 states and 248 transitions. [2025-01-08 22:32:52,321 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-01-08 22:32:52,321 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 3.8) internal successors, (19), 5 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2025-01-08 22:32:52,321 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-08 22:32:52,322 INFO L225 Difference]: With dead ends: 160 [2025-01-08 22:32:52,322 INFO L226 Difference]: Without dead ends: 98 [2025-01-08 22:32:52,322 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2025-01-08 22:32:52,323 INFO L435 NwaCegarLoop]: 15 mSDtfsCounter, 3 mSDsluCounter, 11 mSDsCounter, 0 mSdLazyCounter, 58 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 26 SdHoareTripleChecker+Invalid, 60 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 58 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-01-08 22:32:52,323 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 26 Invalid, 60 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 58 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-01-08 22:32:52,323 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 98 states. [2025-01-08 22:32:52,339 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 98 to 81. [2025-01-08 22:32:52,340 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 81 states, 80 states have (on average 1.4875) internal successors, (119), 80 states have internal predecessors, (119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-08 22:32:52,343 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 81 states to 81 states and 119 transitions. [2025-01-08 22:32:52,344 INFO L78 Accepts]: Start accepts. Automaton has 81 states and 119 transitions. Word has length 22 [2025-01-08 22:32:52,344 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-08 22:32:52,344 INFO L471 AbstractCegarLoop]: Abstraction has 81 states and 119 transitions. [2025-01-08 22:32:52,344 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 3.8) internal successors, (19), 5 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-08 22:32:52,344 INFO L276 IsEmpty]: Start isEmpty. Operand 81 states and 119 transitions. [2025-01-08 22:32:52,345 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2025-01-08 22:32:52,346 INFO L210 NwaCegarLoop]: Found error trace [2025-01-08 22:32:52,346 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-08 22:32:52,353 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2025-01-08 22:32:52,550 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable7 [2025-01-08 22:32:52,550 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-01-08 22:32:52,550 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-08 22:32:52,550 INFO L85 PathProgramCache]: Analyzing trace with hash 372176158, now seen corresponding path program 1 times [2025-01-08 22:32:52,551 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-08 22:32:52,551 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1355972086] [2025-01-08 22:32:52,551 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-08 22:32:52,551 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-08 22:32:52,557 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 26 statements into 1 equivalence classes. [2025-01-08 22:32:52,563 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 26 of 26 statements. [2025-01-08 22:32:52,563 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-08 22:32:52,563 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-08 22:32:52,640 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 9 proven. 11 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2025-01-08 22:32:52,641 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-08 22:32:52,641 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1355972086] [2025-01-08 22:32:52,641 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1355972086] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-08 22:32:52,641 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2087486595] [2025-01-08 22:32:52,641 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-08 22:32:52,641 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-08 22:32:52,642 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-08 22:32:52,644 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-01-08 22:32:52,646 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2025-01-08 22:32:52,681 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 26 statements into 1 equivalence classes. [2025-01-08 22:32:52,695 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 26 of 26 statements. [2025-01-08 22:32:52,695 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-08 22:32:52,696 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-08 22:32:52,696 INFO L256 TraceCheckSpWp]: Trace formula consists of 112 conjuncts, 6 conjuncts are in the unsatisfiable core [2025-01-08 22:32:52,697 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-08 22:32:52,757 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 8 proven. 12 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2025-01-08 22:32:52,757 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-01-08 22:32:52,811 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 4 proven. 16 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2025-01-08 22:32:52,811 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2087486595] provided 0 perfect and 2 imperfect interpolant sequences [2025-01-08 22:32:52,811 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-01-08 22:32:52,811 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 11 [2025-01-08 22:32:52,811 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2056869015] [2025-01-08 22:32:52,811 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-01-08 22:32:52,812 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2025-01-08 22:32:52,812 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-08 22:32:52,812 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2025-01-08 22:32:52,812 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2025-01-08 22:32:52,812 INFO L87 Difference]: Start difference. First operand 81 states and 119 transitions. Second operand has 11 states, 11 states have (on average 3.6363636363636362) internal successors, (40), 11 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-08 22:32:52,928 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-08 22:32:52,929 INFO L93 Difference]: Finished difference Result 106 states and 149 transitions. [2025-01-08 22:32:52,929 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2025-01-08 22:32:52,929 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 3.6363636363636362) internal successors, (40), 11 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2025-01-08 22:32:52,929 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-08 22:32:52,930 INFO L225 Difference]: With dead ends: 106 [2025-01-08 22:32:52,930 INFO L226 Difference]: Without dead ends: 69 [2025-01-08 22:32:52,930 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 61 GetRequests, 44 SyntacticMatches, 4 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 44 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=62, Invalid=148, Unknown=0, NotChecked=0, Total=210 [2025-01-08 22:32:52,931 INFO L435 NwaCegarLoop]: 7 mSDtfsCounter, 36 mSDsluCounter, 14 mSDsCounter, 0 mSdLazyCounter, 111 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 36 SdHoareTripleChecker+Valid, 21 SdHoareTripleChecker+Invalid, 127 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 111 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-01-08 22:32:52,931 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [36 Valid, 21 Invalid, 127 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 111 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-01-08 22:32:52,931 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 69 states. [2025-01-08 22:32:52,936 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 69 to 38. [2025-01-08 22:32:52,937 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 38 states, 37 states have (on average 1.3783783783783783) internal successors, (51), 37 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-08 22:32:52,937 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 51 transitions. [2025-01-08 22:32:52,938 INFO L78 Accepts]: Start accepts. Automaton has 38 states and 51 transitions. Word has length 26 [2025-01-08 22:32:52,938 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-08 22:32:52,938 INFO L471 AbstractCegarLoop]: Abstraction has 38 states and 51 transitions. [2025-01-08 22:32:52,938 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 3.6363636363636362) internal successors, (40), 11 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-08 22:32:52,938 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 51 transitions. [2025-01-08 22:32:52,939 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2025-01-08 22:32:52,939 INFO L210 NwaCegarLoop]: Found error trace [2025-01-08 22:32:52,939 INFO L218 NwaCegarLoop]: trace histogram [4, 4, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-08 22:32:52,946 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2025-01-08 22:32:53,139 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,6 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-08 22:32:53,140 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-01-08 22:32:53,140 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-08 22:32:53,140 INFO L85 PathProgramCache]: Analyzing trace with hash -1565714335, now seen corresponding path program 2 times [2025-01-08 22:32:53,140 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-08 22:32:53,140 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [965304557] [2025-01-08 22:32:53,140 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-01-08 22:32:53,140 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-08 22:32:53,149 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 30 statements into 2 equivalence classes. [2025-01-08 22:32:53,156 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 30 of 30 statements. [2025-01-08 22:32:53,156 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-01-08 22:32:53,156 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-08 22:32:53,276 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 2 proven. 27 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2025-01-08 22:32:53,277 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-08 22:32:53,277 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [965304557] [2025-01-08 22:32:53,277 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [965304557] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-08 22:32:53,277 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1656855155] [2025-01-08 22:32:53,277 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-01-08 22:32:53,277 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-08 22:32:53,277 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-08 22:32:53,279 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-01-08 22:32:53,282 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2025-01-08 22:32:53,323 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 30 statements into 2 equivalence classes. [2025-01-08 22:32:53,342 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 30 of 30 statements. [2025-01-08 22:32:53,342 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-01-08 22:32:53,343 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-08 22:32:53,343 INFO L256 TraceCheckSpWp]: Trace formula consists of 127 conjuncts, 5 conjuncts are in the unsatisfiable core [2025-01-08 22:32:53,345 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-08 22:32:53,414 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 12 proven. 13 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2025-01-08 22:32:53,414 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-01-08 22:32:53,477 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 12 proven. 13 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2025-01-08 22:32:53,477 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1656855155] provided 0 perfect and 2 imperfect interpolant sequences [2025-01-08 22:32:53,477 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-01-08 22:32:53,477 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 6, 6] total 15 [2025-01-08 22:32:53,479 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1807076844] [2025-01-08 22:32:53,479 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-01-08 22:32:53,479 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2025-01-08 22:32:53,479 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-08 22:32:53,480 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2025-01-08 22:32:53,480 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=155, Unknown=0, NotChecked=0, Total=210 [2025-01-08 22:32:53,480 INFO L87 Difference]: Start difference. First operand 38 states and 51 transitions. Second operand has 15 states, 15 states have (on average 3.3333333333333335) internal successors, (50), 15 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-08 22:32:53,800 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-08 22:32:53,800 INFO L93 Difference]: Finished difference Result 105 states and 150 transitions. [2025-01-08 22:32:53,801 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2025-01-08 22:32:53,801 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 3.3333333333333335) internal successors, (50), 15 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 30 [2025-01-08 22:32:53,801 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-08 22:32:53,802 INFO L225 Difference]: With dead ends: 105 [2025-01-08 22:32:53,802 INFO L226 Difference]: Without dead ends: 75 [2025-01-08 22:32:53,803 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 82 GetRequests, 52 SyntacticMatches, 2 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 217 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=229, Invalid=641, Unknown=0, NotChecked=0, Total=870 [2025-01-08 22:32:53,803 INFO L435 NwaCegarLoop]: 8 mSDtfsCounter, 40 mSDsluCounter, 33 mSDsCounter, 0 mSdLazyCounter, 204 mSolverCounterSat, 27 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 40 SdHoareTripleChecker+Valid, 41 SdHoareTripleChecker+Invalid, 231 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 27 IncrementalHoareTripleChecker+Valid, 204 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-01-08 22:32:53,803 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [40 Valid, 41 Invalid, 231 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [27 Valid, 204 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-01-08 22:32:53,804 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 75 states. [2025-01-08 22:32:53,811 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 75 to 57. [2025-01-08 22:32:53,811 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 57 states, 56 states have (on average 1.2857142857142858) internal successors, (72), 56 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-08 22:32:53,811 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57 states to 57 states and 72 transitions. [2025-01-08 22:32:53,812 INFO L78 Accepts]: Start accepts. Automaton has 57 states and 72 transitions. Word has length 30 [2025-01-08 22:32:53,812 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-08 22:32:53,812 INFO L471 AbstractCegarLoop]: Abstraction has 57 states and 72 transitions. [2025-01-08 22:32:53,812 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 3.3333333333333335) internal successors, (50), 15 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-08 22:32:53,812 INFO L276 IsEmpty]: Start isEmpty. Operand 57 states and 72 transitions. [2025-01-08 22:32:53,813 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2025-01-08 22:32:53,813 INFO L210 NwaCegarLoop]: Found error trace [2025-01-08 22:32:53,813 INFO L218 NwaCegarLoop]: trace histogram [4, 4, 4, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-08 22:32:53,820 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2025-01-08 22:32:54,013 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2025-01-08 22:32:54,014 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-01-08 22:32:54,014 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-08 22:32:54,014 INFO L85 PathProgramCache]: Analyzing trace with hash 1281654822, now seen corresponding path program 3 times [2025-01-08 22:32:54,015 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-08 22:32:54,015 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [575175359] [2025-01-08 22:32:54,015 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-01-08 22:32:54,015 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-08 22:32:54,026 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 35 statements into 6 equivalence classes. [2025-01-08 22:32:54,056 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s) and asserted 35 of 35 statements. [2025-01-08 22:32:54,058 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s) [2025-01-08 22:32:54,058 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unknown [2025-01-08 22:32:54,058 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1054593104] [2025-01-08 22:32:54,059 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-01-08 22:32:54,059 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-08 22:32:54,059 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-08 22:32:54,061 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-01-08 22:32:54,063 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2025-01-08 22:32:54,107 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 35 statements into 6 equivalence classes. [2025-01-08 22:32:54,169 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) and asserted 33 of 35 statements. [2025-01-08 22:32:54,169 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) [2025-01-08 22:32:54,169 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-08 22:32:54,175 WARN L254 TraceCheckSpWp]: Trace formula consists of 142 conjuncts, 73 conjuncts are in the unsatisfiable core [2025-01-08 22:32:54,180 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-08 22:32:54,267 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2025-01-08 22:32:54,407 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 20 [2025-01-08 22:32:54,523 INFO L349 Elim1Store]: treesize reduction 36, result has 46.3 percent of original size [2025-01-08 22:32:54,524 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 38 treesize of output 56 [2025-01-08 22:32:54,837 INFO L190 IndexEqualityManager]: detected not equals via solver [2025-01-08 22:32:54,840 INFO L190 IndexEqualityManager]: detected not equals via solver [2025-01-08 22:32:54,842 INFO L190 IndexEqualityManager]: detected not equals via solver [2025-01-08 22:32:54,852 INFO L349 Elim1Store]: treesize reduction 25, result has 21.9 percent of original size [2025-01-08 22:32:54,853 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 5 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 4 case distinctions, treesize of input 64 treesize of output 69 [2025-01-08 22:32:55,584 INFO L190 IndexEqualityManager]: detected not equals via solver [2025-01-08 22:32:55,586 INFO L190 IndexEqualityManager]: detected not equals via solver [2025-01-08 22:32:55,586 INFO L190 IndexEqualityManager]: detected not equals via solver [2025-01-08 22:32:55,587 INFO L190 IndexEqualityManager]: detected not equals via solver [2025-01-08 22:32:55,589 INFO L190 IndexEqualityManager]: detected not equals via solver [2025-01-08 22:32:55,590 INFO L190 IndexEqualityManager]: detected not equals via solver [2025-01-08 22:32:55,591 INFO L190 IndexEqualityManager]: detected not equals via solver [2025-01-08 22:32:55,592 INFO L190 IndexEqualityManager]: detected not equals via solver [2025-01-08 22:32:55,595 INFO L190 IndexEqualityManager]: detected not equals via solver [2025-01-08 22:32:55,600 INFO L190 IndexEqualityManager]: detected not equals via solver [2025-01-08 22:32:55,614 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-01-08 22:32:55,614 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 6 select indices, 6 select index equivalence classes, 13 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 15 case distinctions, treesize of input 78 treesize of output 50 [2025-01-08 22:32:55,753 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 4 proven. 46 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-01-08 22:32:55,754 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-01-08 22:32:56,887 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 69 treesize of output 65 [2025-01-08 22:32:56,895 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-01-08 22:32:56,896 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 506 treesize of output 482 [2025-01-08 22:32:57,070 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 0 proven. 50 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-01-08 22:32:57,070 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-08 22:32:57,070 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [575175359] [2025-01-08 22:32:57,070 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2025-01-08 22:32:57,071 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1054593104] [2025-01-08 22:32:57,071 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1054593104] provided 0 perfect and 2 imperfect interpolant sequences [2025-01-08 22:32:57,071 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2025-01-08 22:32:57,071 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 23] total 44 [2025-01-08 22:32:57,071 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1226569365] [2025-01-08 22:32:57,071 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2025-01-08 22:32:57,071 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 44 states [2025-01-08 22:32:57,074 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-08 22:32:57,074 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 44 interpolants. [2025-01-08 22:32:57,075 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=291, Invalid=1601, Unknown=0, NotChecked=0, Total=1892 [2025-01-08 22:32:57,075 INFO L87 Difference]: Start difference. First operand 57 states and 72 transitions. Second operand has 44 states, 44 states have (on average 1.5) internal successors, (66), 44 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-08 22:33:03,609 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-08 22:33:03,609 INFO L93 Difference]: Finished difference Result 157 states and 209 transitions. [2025-01-08 22:33:03,609 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 84 states. [2025-01-08 22:33:03,610 INFO L78 Accepts]: Start accepts. Automaton has has 44 states, 44 states have (on average 1.5) internal successors, (66), 44 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 35 [2025-01-08 22:33:03,610 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-08 22:33:03,611 INFO L225 Difference]: With dead ends: 157 [2025-01-08 22:33:03,611 INFO L226 Difference]: Without dead ends: 148 [2025-01-08 22:33:03,616 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 133 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 107 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3746 ImplicationChecksByTransitivity, 7.0s TimeCoverageRelationStatistics Valid=2013, Invalid=9759, Unknown=0, NotChecked=0, Total=11772 [2025-01-08 22:33:03,616 INFO L435 NwaCegarLoop]: 6 mSDtfsCounter, 150 mSDsluCounter, 62 mSDsCounter, 0 mSdLazyCounter, 970 mSolverCounterSat, 241 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 150 SdHoareTripleChecker+Valid, 68 SdHoareTripleChecker+Invalid, 1211 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 241 IncrementalHoareTripleChecker+Valid, 970 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2025-01-08 22:33:03,616 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [150 Valid, 68 Invalid, 1211 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [241 Valid, 970 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2025-01-08 22:33:03,617 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 148 states. [2025-01-08 22:33:03,640 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 148 to 94. [2025-01-08 22:33:03,642 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 94 states, 93 states have (on average 1.3333333333333333) internal successors, (124), 93 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-08 22:33:03,642 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 94 states to 94 states and 124 transitions. [2025-01-08 22:33:03,642 INFO L78 Accepts]: Start accepts. Automaton has 94 states and 124 transitions. Word has length 35 [2025-01-08 22:33:03,642 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-08 22:33:03,643 INFO L471 AbstractCegarLoop]: Abstraction has 94 states and 124 transitions. [2025-01-08 22:33:03,643 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 44 states, 44 states have (on average 1.5) internal successors, (66), 44 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-08 22:33:03,643 INFO L276 IsEmpty]: Start isEmpty. Operand 94 states and 124 transitions. [2025-01-08 22:33:03,644 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2025-01-08 22:33:03,644 INFO L210 NwaCegarLoop]: Found error trace [2025-01-08 22:33:03,644 INFO L218 NwaCegarLoop]: trace histogram [6, 4, 4, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-08 22:33:03,651 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2025-01-08 22:33:03,844 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,8 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-08 22:33:03,844 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-01-08 22:33:03,845 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-08 22:33:03,845 INFO L85 PathProgramCache]: Analyzing trace with hash -1289506542, now seen corresponding path program 4 times [2025-01-08 22:33:03,845 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-08 22:33:03,845 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2048017237] [2025-01-08 22:33:03,845 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-01-08 22:33:03,845 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-08 22:33:03,856 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 37 statements into 2 equivalence classes. [2025-01-08 22:33:03,862 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 1 check-sat command(s) and asserted 34 of 37 statements. [2025-01-08 22:33:03,862 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 1 check-sat command(s) [2025-01-08 22:33:03,862 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-08 22:33:03,952 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 20 proven. 27 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2025-01-08 22:33:03,953 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-08 22:33:03,953 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2048017237] [2025-01-08 22:33:03,953 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2048017237] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-08 22:33:03,953 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [459596542] [2025-01-08 22:33:03,953 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-01-08 22:33:03,953 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-08 22:33:03,953 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-08 22:33:03,955 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-01-08 22:33:03,957 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2025-01-08 22:33:04,000 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 37 statements into 2 equivalence classes. [2025-01-08 22:33:04,015 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 1 check-sat command(s) and asserted 34 of 37 statements. [2025-01-08 22:33:04,016 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 1 check-sat command(s) [2025-01-08 22:33:04,016 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-08 22:33:04,017 INFO L256 TraceCheckSpWp]: Trace formula consists of 115 conjuncts, 8 conjuncts are in the unsatisfiable core [2025-01-08 22:33:04,018 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-08 22:33:04,072 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 22 proven. 25 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2025-01-08 22:33:04,072 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-01-08 22:33:04,111 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 22 proven. 25 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2025-01-08 22:33:04,111 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [459596542] provided 0 perfect and 2 imperfect interpolant sequences [2025-01-08 22:33:04,111 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-01-08 22:33:04,111 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 13 [2025-01-08 22:33:04,111 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2099416604] [2025-01-08 22:33:04,111 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-01-08 22:33:04,112 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2025-01-08 22:33:04,112 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-08 22:33:04,112 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2025-01-08 22:33:04,112 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=109, Unknown=0, NotChecked=0, Total=156 [2025-01-08 22:33:04,112 INFO L87 Difference]: Start difference. First operand 94 states and 124 transitions. Second operand has 13 states, 13 states have (on average 2.923076923076923) internal successors, (38), 13 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-08 22:33:04,228 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-08 22:33:04,228 INFO L93 Difference]: Finished difference Result 230 states and 304 transitions. [2025-01-08 22:33:04,229 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2025-01-08 22:33:04,229 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), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 37 [2025-01-08 22:33:04,229 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-08 22:33:04,229 INFO L225 Difference]: With dead ends: 230 [2025-01-08 22:33:04,229 INFO L226 Difference]: Without dead ends: 153 [2025-01-08 22:33:04,230 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 83 GetRequests, 65 SyntacticMatches, 5 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 63 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=66, Invalid=144, Unknown=0, NotChecked=0, Total=210 [2025-01-08 22:33:04,230 INFO L435 NwaCegarLoop]: 7 mSDtfsCounter, 40 mSDsluCounter, 19 mSDsCounter, 0 mSdLazyCounter, 127 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 40 SdHoareTripleChecker+Valid, 26 SdHoareTripleChecker+Invalid, 143 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 127 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-01-08 22:33:04,230 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [40 Valid, 26 Invalid, 143 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 127 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-01-08 22:33:04,231 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 153 states. [2025-01-08 22:33:04,251 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 153 to 121. [2025-01-08 22:33:04,251 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 121 states, 120 states have (on average 1.3) internal successors, (156), 120 states have internal predecessors, (156), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-08 22:33:04,252 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 121 states to 121 states and 156 transitions. [2025-01-08 22:33:04,252 INFO L78 Accepts]: Start accepts. Automaton has 121 states and 156 transitions. Word has length 37 [2025-01-08 22:33:04,252 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-08 22:33:04,252 INFO L471 AbstractCegarLoop]: Abstraction has 121 states and 156 transitions. [2025-01-08 22:33:04,252 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), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-08 22:33:04,252 INFO L276 IsEmpty]: Start isEmpty. Operand 121 states and 156 transitions. [2025-01-08 22:33:04,253 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2025-01-08 22:33:04,253 INFO L210 NwaCegarLoop]: Found error trace [2025-01-08 22:33:04,253 INFO L218 NwaCegarLoop]: trace histogram [6, 6, 5, 5, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-08 22:33:04,260 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2025-01-08 22:33:04,453 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,9 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-08 22:33:04,454 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-01-08 22:33:04,454 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-08 22:33:04,454 INFO L85 PathProgramCache]: Analyzing trace with hash -1622861601, now seen corresponding path program 5 times [2025-01-08 22:33:04,454 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-08 22:33:04,454 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [204067150] [2025-01-08 22:33:04,454 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2025-01-08 22:33:04,454 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-08 22:33:04,461 INFO L108 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 partitioned 44 statements into 8 equivalence classes. [2025-01-08 22:33:04,474 INFO L111 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 7 check-sat command(s) and asserted 36 of 44 statements. [2025-01-08 22:33:04,474 INFO L114 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 7 check-sat command(s) [2025-01-08 22:33:04,474 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-08 22:33:04,614 INFO L134 CoverageAnalysis]: Checked inductivity of 95 backedges. 35 proven. 42 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2025-01-08 22:33:04,614 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-08 22:33:04,614 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [204067150] [2025-01-08 22:33:04,614 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [204067150] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-08 22:33:04,614 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1916879189] [2025-01-08 22:33:04,614 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2025-01-08 22:33:04,614 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-08 22:33:04,615 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-08 22:33:04,617 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-01-08 22:33:04,620 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2025-01-08 22:33:04,661 INFO L108 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 partitioned 44 statements into 8 equivalence classes. [2025-01-08 22:33:04,726 INFO L111 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 7 check-sat command(s) and asserted 36 of 44 statements. [2025-01-08 22:33:04,727 INFO L114 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 7 check-sat command(s) [2025-01-08 22:33:04,727 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-08 22:33:04,727 INFO L256 TraceCheckSpWp]: Trace formula consists of 114 conjuncts, 12 conjuncts are in the unsatisfiable core [2025-01-08 22:33:04,728 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-08 22:33:04,821 INFO L134 CoverageAnalysis]: Checked inductivity of 95 backedges. 33 proven. 53 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2025-01-08 22:33:04,821 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-01-08 22:33:04,984 INFO L134 CoverageAnalysis]: Checked inductivity of 95 backedges. 37 proven. 49 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2025-01-08 22:33:04,985 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1916879189] provided 0 perfect and 2 imperfect interpolant sequences [2025-01-08 22:33:04,985 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-01-08 22:33:04,985 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 13, 13] total 24 [2025-01-08 22:33:04,985 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1375443782] [2025-01-08 22:33:04,985 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-01-08 22:33:04,985 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2025-01-08 22:33:04,985 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-08 22:33:04,985 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2025-01-08 22:33:04,986 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=113, Invalid=439, Unknown=0, NotChecked=0, Total=552 [2025-01-08 22:33:04,986 INFO L87 Difference]: Start difference. First operand 121 states and 156 transitions. Second operand has 24 states, 24 states have (on average 3.0) internal successors, (72), 24 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-08 22:33:06,325 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-08 22:33:06,326 INFO L93 Difference]: Finished difference Result 352 states and 463 transitions. [2025-01-08 22:33:06,326 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 87 states. [2025-01-08 22:33:06,326 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 24 states have (on average 3.0) internal successors, (72), 24 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 44 [2025-01-08 22:33:06,326 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-08 22:33:06,327 INFO L225 Difference]: With dead ends: 352 [2025-01-08 22:33:06,327 INFO L226 Difference]: Without dead ends: 253 [2025-01-08 22:33:06,330 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 199 GetRequests, 96 SyntacticMatches, 4 SemanticMatches, 99 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2956 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=2261, Invalid=7839, Unknown=0, NotChecked=0, Total=10100 [2025-01-08 22:33:06,330 INFO L435 NwaCegarLoop]: 9 mSDtfsCounter, 159 mSDsluCounter, 39 mSDsCounter, 0 mSdLazyCounter, 583 mSolverCounterSat, 96 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 159 SdHoareTripleChecker+Valid, 48 SdHoareTripleChecker+Invalid, 679 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 96 IncrementalHoareTripleChecker+Valid, 583 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2025-01-08 22:33:06,331 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [159 Valid, 48 Invalid, 679 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [96 Valid, 583 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2025-01-08 22:33:06,332 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 253 states. [2025-01-08 22:33:06,363 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 253 to 133. [2025-01-08 22:33:06,364 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 133 states, 132 states have (on average 1.2121212121212122) internal successors, (160), 132 states have internal predecessors, (160), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-08 22:33:06,364 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 133 states to 133 states and 160 transitions. [2025-01-08 22:33:06,365 INFO L78 Accepts]: Start accepts. Automaton has 133 states and 160 transitions. Word has length 44 [2025-01-08 22:33:06,365 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-08 22:33:06,365 INFO L471 AbstractCegarLoop]: Abstraction has 133 states and 160 transitions. [2025-01-08 22:33:06,365 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 3.0) internal successors, (72), 24 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-08 22:33:06,365 INFO L276 IsEmpty]: Start isEmpty. Operand 133 states and 160 transitions. [2025-01-08 22:33:06,366 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2025-01-08 22:33:06,366 INFO L210 NwaCegarLoop]: Found error trace [2025-01-08 22:33:06,366 INFO L218 NwaCegarLoop]: trace histogram [6, 6, 4, 4, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-08 22:33:06,374 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2025-01-08 22:33:06,567 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,10 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-08 22:33:06,567 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-01-08 22:33:06,567 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-08 22:33:06,567 INFO L85 PathProgramCache]: Analyzing trace with hash -328225781, now seen corresponding path program 6 times [2025-01-08 22:33:06,567 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-08 22:33:06,568 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1581917609] [2025-01-08 22:33:06,568 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2025-01-08 22:33:06,568 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-08 22:33:06,574 INFO L108 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE partitioned 44 statements into 7 equivalence classes. [2025-01-08 22:33:06,591 INFO L111 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) and asserted 23 of 44 statements. [2025-01-08 22:33:06,591 INFO L114 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) [2025-01-08 22:33:06,591 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-08 22:33:06,697 INFO L134 CoverageAnalysis]: Checked inductivity of 96 backedges. 41 proven. 27 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2025-01-08 22:33:06,697 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-08 22:33:06,698 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1581917609] [2025-01-08 22:33:06,698 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1581917609] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-08 22:33:06,698 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [805829930] [2025-01-08 22:33:06,698 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2025-01-08 22:33:06,698 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-08 22:33:06,698 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-08 22:33:06,701 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-01-08 22:33:06,702 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2025-01-08 22:33:06,739 INFO L108 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE partitioned 44 statements into 7 equivalence classes. [2025-01-08 22:33:06,753 INFO L111 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) and asserted 23 of 44 statements. [2025-01-08 22:33:06,753 INFO L114 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) [2025-01-08 22:33:06,753 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-08 22:33:06,754 INFO L256 TraceCheckSpWp]: Trace formula consists of 102 conjuncts, 8 conjuncts are in the unsatisfiable core [2025-01-08 22:33:06,755 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-08 22:33:06,840 INFO L134 CoverageAnalysis]: Checked inductivity of 96 backedges. 43 proven. 25 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2025-01-08 22:33:06,840 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-01-08 22:33:06,891 INFO L134 CoverageAnalysis]: Checked inductivity of 96 backedges. 41 proven. 27 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2025-01-08 22:33:06,891 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [805829930] provided 0 perfect and 2 imperfect interpolant sequences [2025-01-08 22:33:06,891 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-01-08 22:33:06,891 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 17 [2025-01-08 22:33:06,892 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1024536022] [2025-01-08 22:33:06,892 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-01-08 22:33:06,892 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2025-01-08 22:33:06,892 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-08 22:33:06,892 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2025-01-08 22:33:06,892 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=75, Invalid=197, Unknown=0, NotChecked=0, Total=272 [2025-01-08 22:33:06,893 INFO L87 Difference]: Start difference. First operand 133 states and 160 transitions. Second operand has 17 states, 17 states have (on average 3.764705882352941) internal successors, (64), 17 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-08 22:33:07,214 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-08 22:33:07,214 INFO L93 Difference]: Finished difference Result 273 states and 330 transitions. [2025-01-08 22:33:07,215 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2025-01-08 22:33:07,215 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 3.764705882352941) internal successors, (64), 17 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 44 [2025-01-08 22:33:07,215 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-08 22:33:07,216 INFO L225 Difference]: With dead ends: 273 [2025-01-08 22:33:07,216 INFO L226 Difference]: Without dead ends: 148 [2025-01-08 22:33:07,217 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 115 GetRequests, 77 SyntacticMatches, 2 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 415 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=407, Invalid=999, Unknown=0, NotChecked=0, Total=1406 [2025-01-08 22:33:07,217 INFO L435 NwaCegarLoop]: 6 mSDtfsCounter, 70 mSDsluCounter, 24 mSDsCounter, 0 mSdLazyCounter, 245 mSolverCounterSat, 54 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 70 SdHoareTripleChecker+Valid, 30 SdHoareTripleChecker+Invalid, 299 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 54 IncrementalHoareTripleChecker+Valid, 245 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-01-08 22:33:07,217 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [70 Valid, 30 Invalid, 299 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [54 Valid, 245 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-01-08 22:33:07,217 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 148 states. [2025-01-08 22:33:07,232 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 148 to 108. [2025-01-08 22:33:07,232 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 108 states, 107 states have (on average 1.1401869158878504) internal successors, (122), 107 states have internal predecessors, (122), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-08 22:33:07,232 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 108 states to 108 states and 122 transitions. [2025-01-08 22:33:07,232 INFO L78 Accepts]: Start accepts. Automaton has 108 states and 122 transitions. Word has length 44 [2025-01-08 22:33:07,232 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-08 22:33:07,232 INFO L471 AbstractCegarLoop]: Abstraction has 108 states and 122 transitions. [2025-01-08 22:33:07,233 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 3.764705882352941) internal successors, (64), 17 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-08 22:33:07,233 INFO L276 IsEmpty]: Start isEmpty. Operand 108 states and 122 transitions. [2025-01-08 22:33:07,233 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2025-01-08 22:33:07,233 INFO L210 NwaCegarLoop]: Found error trace [2025-01-08 22:33:07,233 INFO L218 NwaCegarLoop]: trace histogram [6, 6, 6, 5, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-08 22:33:07,239 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2025-01-08 22:33:07,433 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2025-01-08 22:33:07,434 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-01-08 22:33:07,434 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-08 22:33:07,434 INFO L85 PathProgramCache]: Analyzing trace with hash 1228988402, now seen corresponding path program 7 times [2025-01-08 22:33:07,434 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-08 22:33:07,434 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1240460665] [2025-01-08 22:33:07,434 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2025-01-08 22:33:07,434 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-08 22:33:07,441 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 45 statements into 1 equivalence classes. [2025-01-08 22:33:07,449 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 45 of 45 statements. [2025-01-08 22:33:07,450 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-08 22:33:07,450 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-08 22:33:07,522 INFO L134 CoverageAnalysis]: Checked inductivity of 102 backedges. 33 proven. 3 refuted. 0 times theorem prover too weak. 66 trivial. 0 not checked. [2025-01-08 22:33:07,523 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-08 22:33:07,523 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1240460665] [2025-01-08 22:33:07,523 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1240460665] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-08 22:33:07,523 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1645305449] [2025-01-08 22:33:07,523 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2025-01-08 22:33:07,523 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-08 22:33:07,523 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-08 22:33:07,525 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-01-08 22:33:07,528 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2025-01-08 22:33:07,572 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 45 statements into 1 equivalence classes. [2025-01-08 22:33:07,589 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 45 of 45 statements. [2025-01-08 22:33:07,589 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-08 22:33:07,589 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-08 22:33:07,590 INFO L256 TraceCheckSpWp]: Trace formula consists of 180 conjuncts, 8 conjuncts are in the unsatisfiable core [2025-01-08 22:33:07,591 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-08 22:33:07,692 INFO L134 CoverageAnalysis]: Checked inductivity of 102 backedges. 6 proven. 52 refuted. 0 times theorem prover too weak. 44 trivial. 0 not checked. [2025-01-08 22:33:07,692 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-01-08 22:33:07,758 INFO L134 CoverageAnalysis]: Checked inductivity of 102 backedges. 6 proven. 52 refuted. 0 times theorem prover too weak. 44 trivial. 0 not checked. [2025-01-08 22:33:07,758 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1645305449] provided 0 perfect and 2 imperfect interpolant sequences [2025-01-08 22:33:07,758 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-01-08 22:33:07,758 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 9, 9] total 15 [2025-01-08 22:33:07,758 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1506708627] [2025-01-08 22:33:07,758 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-01-08 22:33:07,758 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2025-01-08 22:33:07,758 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-08 22:33:07,758 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2025-01-08 22:33:07,759 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=155, Unknown=0, NotChecked=0, Total=210 [2025-01-08 22:33:07,759 INFO L87 Difference]: Start difference. First operand 108 states and 122 transitions. Second operand has 15 states, 15 states have (on average 4.466666666666667) internal successors, (67), 15 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-08 22:33:08,081 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-08 22:33:08,082 INFO L93 Difference]: Finished difference Result 214 states and 248 transitions. [2025-01-08 22:33:08,082 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2025-01-08 22:33:08,082 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 4.466666666666667) internal successors, (67), 15 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 45 [2025-01-08 22:33:08,082 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-08 22:33:08,083 INFO L225 Difference]: With dead ends: 214 [2025-01-08 22:33:08,083 INFO L226 Difference]: Without dead ends: 200 [2025-01-08 22:33:08,084 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 120 GetRequests, 80 SyntacticMatches, 5 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 424 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=356, Invalid=976, Unknown=0, NotChecked=0, Total=1332 [2025-01-08 22:33:08,084 INFO L435 NwaCegarLoop]: 8 mSDtfsCounter, 43 mSDsluCounter, 27 mSDsCounter, 0 mSdLazyCounter, 272 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 43 SdHoareTripleChecker+Valid, 35 SdHoareTripleChecker+Invalid, 292 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 272 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-01-08 22:33:08,084 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [43 Valid, 35 Invalid, 292 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 272 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-01-08 22:33:08,085 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 200 states. [2025-01-08 22:33:08,100 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 200 to 113. [2025-01-08 22:33:08,100 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 113 states, 112 states have (on average 1.1339285714285714) internal successors, (127), 112 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-08 22:33:08,100 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 113 states to 113 states and 127 transitions. [2025-01-08 22:33:08,101 INFO L78 Accepts]: Start accepts. Automaton has 113 states and 127 transitions. Word has length 45 [2025-01-08 22:33:08,101 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-08 22:33:08,101 INFO L471 AbstractCegarLoop]: Abstraction has 113 states and 127 transitions. [2025-01-08 22:33:08,101 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 4.466666666666667) internal successors, (67), 15 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-08 22:33:08,101 INFO L276 IsEmpty]: Start isEmpty. Operand 113 states and 127 transitions. [2025-01-08 22:33:08,102 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2025-01-08 22:33:08,102 INFO L210 NwaCegarLoop]: Found error trace [2025-01-08 22:33:08,102 INFO L218 NwaCegarLoop]: trace histogram [7, 7, 6, 4, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-08 22:33:08,110 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2025-01-08 22:33:08,302 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2025-01-08 22:33:08,302 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-01-08 22:33:08,303 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-08 22:33:08,303 INFO L85 PathProgramCache]: Analyzing trace with hash -1983835571, now seen corresponding path program 8 times [2025-01-08 22:33:08,303 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-08 22:33:08,303 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2130330752] [2025-01-08 22:33:08,303 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-01-08 22:33:08,303 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-08 22:33:08,309 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 49 statements into 2 equivalence classes. [2025-01-08 22:33:08,316 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 49 of 49 statements. [2025-01-08 22:33:08,316 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-01-08 22:33:08,317 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-08 22:33:08,424 INFO L134 CoverageAnalysis]: Checked inductivity of 126 backedges. 60 proven. 42 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2025-01-08 22:33:08,424 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-08 22:33:08,424 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2130330752] [2025-01-08 22:33:08,424 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2130330752] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-08 22:33:08,424 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1437712471] [2025-01-08 22:33:08,425 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-01-08 22:33:08,425 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-08 22:33:08,425 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-08 22:33:08,427 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-01-08 22:33:08,429 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2025-01-08 22:33:08,478 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 49 statements into 2 equivalence classes. [2025-01-08 22:33:08,499 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 49 of 49 statements. [2025-01-08 22:33:08,499 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-01-08 22:33:08,499 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-08 22:33:08,500 INFO L256 TraceCheckSpWp]: Trace formula consists of 181 conjuncts, 4 conjuncts are in the unsatisfiable core [2025-01-08 22:33:08,501 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-08 22:33:08,550 INFO L134 CoverageAnalysis]: Checked inductivity of 126 backedges. 70 proven. 0 refuted. 0 times theorem prover too weak. 56 trivial. 0 not checked. [2025-01-08 22:33:08,550 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-01-08 22:33:08,550 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1437712471] provided 1 perfect and 0 imperfect interpolant sequences [2025-01-08 22:33:08,550 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-01-08 22:33:08,550 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [9] total 12 [2025-01-08 22:33:08,550 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1714741598] [2025-01-08 22:33:08,550 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-01-08 22:33:08,550 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-01-08 22:33:08,550 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-08 22:33:08,551 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-01-08 22:33:08,551 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2025-01-08 22:33:08,551 INFO L87 Difference]: Start difference. First operand 113 states and 127 transitions. Second operand has 5 states, 5 states have (on average 5.8) internal successors, (29), 5 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-08 22:33:08,604 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-08 22:33:08,604 INFO L93 Difference]: Finished difference Result 165 states and 188 transitions. [2025-01-08 22:33:08,604 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-01-08 22:33:08,605 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 5.8) internal successors, (29), 5 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 49 [2025-01-08 22:33:08,605 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-08 22:33:08,605 INFO L225 Difference]: With dead ends: 165 [2025-01-08 22:33:08,605 INFO L226 Difference]: Without dead ends: 76 [2025-01-08 22:33:08,605 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 47 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2025-01-08 22:33:08,606 INFO L435 NwaCegarLoop]: 8 mSDtfsCounter, 14 mSDsluCounter, 10 mSDsCounter, 0 mSdLazyCounter, 44 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14 SdHoareTripleChecker+Valid, 18 SdHoareTripleChecker+Invalid, 47 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 44 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-01-08 22:33:08,606 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [14 Valid, 18 Invalid, 47 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 44 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-01-08 22:33:08,606 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 76 states. [2025-01-08 22:33:08,617 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 76 to 75. [2025-01-08 22:33:08,617 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 75 states, 74 states have (on average 1.135135135135135) internal successors, (84), 74 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-08 22:33:08,617 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 75 states to 75 states and 84 transitions. [2025-01-08 22:33:08,617 INFO L78 Accepts]: Start accepts. Automaton has 75 states and 84 transitions. Word has length 49 [2025-01-08 22:33:08,617 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-08 22:33:08,617 INFO L471 AbstractCegarLoop]: Abstraction has 75 states and 84 transitions. [2025-01-08 22:33:08,618 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 5.8) internal successors, (29), 5 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-08 22:33:08,618 INFO L276 IsEmpty]: Start isEmpty. Operand 75 states and 84 transitions. [2025-01-08 22:33:08,618 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2025-01-08 22:33:08,618 INFO L210 NwaCegarLoop]: Found error trace [2025-01-08 22:33:08,618 INFO L218 NwaCegarLoop]: trace histogram [9, 9, 9, 6, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-08 22:33:08,624 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Ended with exit code 0 [2025-01-08 22:33:08,818 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15,13 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-08 22:33:08,819 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-01-08 22:33:08,819 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-08 22:33:08,819 INFO L85 PathProgramCache]: Analyzing trace with hash 338381274, now seen corresponding path program 9 times [2025-01-08 22:33:08,819 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-08 22:33:08,819 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1481664542] [2025-01-08 22:33:08,819 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-01-08 22:33:08,819 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-08 22:33:08,827 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 62 statements into 9 equivalence classes. [2025-01-08 22:33:08,879 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 9 check-sat command(s) and asserted 62 of 62 statements. [2025-01-08 22:33:08,880 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 9 check-sat command(s) [2025-01-08 22:33:08,880 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unknown [2025-01-08 22:33:08,881 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [269432375] [2025-01-08 22:33:08,881 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-01-08 22:33:08,881 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-08 22:33:08,881 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-08 22:33:08,883 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-01-08 22:33:08,886 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2025-01-08 22:33:08,942 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 62 statements into 9 equivalence classes. [2025-01-08 22:33:09,946 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 9 check-sat command(s) and asserted 62 of 62 statements. [2025-01-08 22:33:09,946 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 9 check-sat command(s) [2025-01-08 22:33:09,947 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-08 22:33:09,950 WARN L254 TraceCheckSpWp]: Trace formula consists of 238 conjuncts, 127 conjuncts are in the unsatisfiable core [2025-01-08 22:33:09,954 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-08 22:33:10,040 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2025-01-08 22:33:10,119 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 20 [2025-01-08 22:33:10,251 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-01-08 22:33:10,251 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 32 [2025-01-08 22:33:10,390 INFO L349 Elim1Store]: treesize reduction 54, result has 46.0 percent of original size [2025-01-08 22:33:10,391 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 47 treesize of output 76 [2025-01-08 22:33:10,652 INFO L190 IndexEqualityManager]: detected not equals via solver [2025-01-08 22:33:10,656 INFO L190 IndexEqualityManager]: detected not equals via solver [2025-01-08 22:33:10,685 INFO L349 Elim1Store]: treesize reduction 64, result has 26.4 percent of original size [2025-01-08 22:33:10,686 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 8 case distinctions, treesize of input 89 treesize of output 105 [2025-01-08 22:33:10,989 INFO L349 Elim1Store]: treesize reduction 161, result has 12.0 percent of original size [2025-01-08 22:33:10,990 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 3 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 13 case distinctions, treesize of input 108 treesize of output 120 [2025-01-08 22:33:11,534 INFO L349 Elim1Store]: treesize reduction 230, result has 33.7 percent of original size [2025-01-08 22:33:11,535 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 6 select indices, 6 select index equivalence classes, 3 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 21 case distinctions, treesize of input 131 treesize of output 187 [2025-01-08 22:33:12,127 INFO L349 Elim1Store]: treesize reduction 320, result has 24.7 percent of original size [2025-01-08 22:33:12,127 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 7 select indices, 7 select index equivalence classes, 3 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 27 case distinctions, treesize of input 163 treesize of output 210 [2025-01-08 22:33:12,889 INFO L190 IndexEqualityManager]: detected not equals via solver [2025-01-08 22:33:12,891 INFO L190 IndexEqualityManager]: detected not equals via solver [2025-01-08 22:33:12,892 INFO L190 IndexEqualityManager]: detected not equals via solver [2025-01-08 22:33:12,894 INFO L190 IndexEqualityManager]: detected not equals via solver [2025-01-08 22:33:12,895 INFO L190 IndexEqualityManager]: detected not equals via solver [2025-01-08 22:33:12,897 INFO L190 IndexEqualityManager]: detected not equals via solver [2025-01-08 22:33:12,900 INFO L190 IndexEqualityManager]: detected not equals via solver [2025-01-08 22:33:12,901 INFO L190 IndexEqualityManager]: detected not equals via solver [2025-01-08 22:33:12,902 INFO L190 IndexEqualityManager]: detected not equals via solver [2025-01-08 22:33:12,903 INFO L190 IndexEqualityManager]: detected not equals via solver [2025-01-08 22:33:12,905 INFO L190 IndexEqualityManager]: detected not equals via solver [2025-01-08 22:33:12,906 INFO L190 IndexEqualityManager]: detected not equals via solver [2025-01-08 22:33:12,907 INFO L190 IndexEqualityManager]: detected not equals via solver [2025-01-08 22:33:12,908 INFO L190 IndexEqualityManager]: detected not equals via solver [2025-01-08 22:33:12,909 INFO L190 IndexEqualityManager]: detected not equals via solver [2025-01-08 22:33:12,910 INFO L190 IndexEqualityManager]: detected not equals via solver [2025-01-08 22:33:12,918 INFO L349 Elim1Store]: treesize reduction 56, result has 1.8 percent of original size [2025-01-08 22:33:12,919 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 8 select indices, 8 select index equivalence classes, 29 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 28 case distinctions, treesize of input 116 treesize of output 136 [2025-01-08 22:33:14,913 INFO L134 CoverageAnalysis]: Checked inductivity of 231 backedges. 0 proven. 230 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-01-08 22:33:14,913 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-01-08 22:33:21,164 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 153 treesize of output 147 [2025-01-08 22:33:21,201 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-01-08 22:33:21,202 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 605530 treesize of output 585050 [2025-01-08 22:33:21,576 INFO L134 CoverageAnalysis]: Checked inductivity of 231 backedges. 0 proven. 230 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-01-08 22:33:21,576 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-08 22:33:21,576 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1481664542] [2025-01-08 22:33:21,576 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2025-01-08 22:33:21,576 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [269432375] [2025-01-08 22:33:21,576 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [269432375] provided 0 perfect and 2 imperfect interpolant sequences [2025-01-08 22:33:21,576 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2025-01-08 22:33:21,576 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [42, 40] total 78 [2025-01-08 22:33:21,577 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1746301677] [2025-01-08 22:33:21,577 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2025-01-08 22:33:21,577 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 78 states [2025-01-08 22:33:21,577 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-08 22:33:21,578 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 78 interpolants. [2025-01-08 22:33:21,579 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=682, Invalid=5324, Unknown=0, NotChecked=0, Total=6006 [2025-01-08 22:33:21,579 INFO L87 Difference]: Start difference. First operand 75 states and 84 transitions. Second operand has 78 states, 78 states have (on average 1.5256410256410255) internal successors, (119), 78 states have internal predecessors, (119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-08 22:33:46,871 WARN L286 SmtUtils]: Spent 8.15s on a formula simplification. DAG size of input: 195 DAG size of output: 175 (called from [L 388] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2025-01-08 22:34:00,101 WARN L286 SmtUtils]: Spent 5.09s on a formula simplification. DAG size of input: 178 DAG size of output: 165 (called from [L 388] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate)