./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/recursive-simple/fibo_2calls_10-1.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/recursive-simple/fibo_2calls_10-1.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 b6366e3b98da5ee88513ec6586b547e61d25aed49a53277f23448bdf367b4562 --- Real Ultimate output --- This is Ultimate 0.3.0-?-551b009-m [2025-01-09 04:05:23,743 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-01-09 04:05:23,799 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2025-01-09 04:05:23,804 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-01-09 04:05:23,804 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-01-09 04:05:23,827 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-01-09 04:05:23,827 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-01-09 04:05:23,827 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-01-09 04:05:23,828 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-01-09 04:05:23,828 INFO L153 SettingsManager]: * Use memory slicer=true [2025-01-09 04:05:23,829 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-01-09 04:05:23,829 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-01-09 04:05:23,829 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-01-09 04:05:23,829 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-01-09 04:05:23,829 INFO L153 SettingsManager]: * Use SBE=true [2025-01-09 04:05:23,829 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-01-09 04:05:23,830 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2025-01-09 04:05:23,830 INFO L153 SettingsManager]: * sizeof long=4 [2025-01-09 04:05:23,830 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-01-09 04:05:23,830 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-01-09 04:05:23,830 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-01-09 04:05:23,830 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2025-01-09 04:05:23,830 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-01-09 04:05:23,830 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2025-01-09 04:05:23,830 INFO L153 SettingsManager]: * sizeof long double=12 [2025-01-09 04:05:23,830 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2025-01-09 04:05:23,830 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-01-09 04:05:23,831 INFO L153 SettingsManager]: * Use constant arrays=true [2025-01-09 04:05:23,831 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-01-09 04:05:23,831 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-01-09 04:05:23,831 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-01-09 04:05:23,831 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-01-09 04:05:23,831 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-01-09 04:05:23,831 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2025-01-09 04:05:23,831 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-01-09 04:05:23,832 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-01-09 04:05:23,832 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-01-09 04:05:23,832 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-01-09 04:05:23,832 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-01-09 04:05:23,832 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-01-09 04:05:23,832 INFO L153 SettingsManager]: * Compute procedure contracts=false [2025-01-09 04:05:23,832 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2025-01-09 04:05:23,832 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-01-09 04:05:23,832 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2025-01-09 04:05:23,832 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2025-01-09 04:05:23,833 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-01-09 04:05:23,833 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-01-09 04:05:23,833 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-01-09 04:05:23,833 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 -> b6366e3b98da5ee88513ec6586b547e61d25aed49a53277f23448bdf367b4562 [2025-01-09 04:05:24,058 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-01-09 04:05:24,065 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-01-09 04:05:24,067 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-01-09 04:05:24,068 INFO L270 PluginConnector]: Initializing CDTParser... [2025-01-09 04:05:24,069 INFO L274 PluginConnector]: CDTParser initialized [2025-01-09 04:05:24,070 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/recursive-simple/fibo_2calls_10-1.c [2025-01-09 04:05:25,210 INFO L533 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/330e5feb0/49db412481394382ad680778bc83a095/FLAGf620dfd34 [2025-01-09 04:05:25,419 INFO L384 CDTParser]: Found 1 translation units. [2025-01-09 04:05:25,419 INFO L180 CDTParser]: Scanning /storage/repos/ultimate-jdk21/releaseScripts/default/sv-benchmarks/c/recursive-simple/fibo_2calls_10-1.c [2025-01-09 04:05:25,433 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/330e5feb0/49db412481394382ad680778bc83a095/FLAGf620dfd34 [2025-01-09 04:05:25,793 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/330e5feb0/49db412481394382ad680778bc83a095 [2025-01-09 04:05:25,795 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-01-09 04:05:25,797 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2025-01-09 04:05:25,798 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-01-09 04:05:25,798 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-01-09 04:05:25,801 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-01-09 04:05:25,802 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.01 04:05:25" (1/1) ... [2025-01-09 04:05:25,802 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2334be49 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 04:05:25, skipping insertion in model container [2025-01-09 04:05:25,803 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.01 04:05:25" (1/1) ... [2025-01-09 04:05:25,813 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-01-09 04:05:25,916 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/recursive-simple/fibo_2calls_10-1.c[949,962] [2025-01-09 04:05:25,919 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-01-09 04:05:25,925 INFO L200 MainTranslator]: Completed pre-run [2025-01-09 04:05:25,937 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/recursive-simple/fibo_2calls_10-1.c[949,962] [2025-01-09 04:05:25,938 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-01-09 04:05:25,950 INFO L204 MainTranslator]: Completed translation [2025-01-09 04:05:25,951 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 04:05:25 WrapperNode [2025-01-09 04:05:25,951 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-01-09 04:05:25,952 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-01-09 04:05:25,952 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-01-09 04:05:25,952 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-01-09 04:05:25,958 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 04:05:25" (1/1) ... [2025-01-09 04:05:25,963 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 04:05:25" (1/1) ... [2025-01-09 04:05:25,974 INFO L138 Inliner]: procedures = 14, calls = 12, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 20 [2025-01-09 04:05:25,975 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-01-09 04:05:25,976 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-01-09 04:05:25,976 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-01-09 04:05:25,976 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-01-09 04:05:25,982 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 04:05:25" (1/1) ... [2025-01-09 04:05:25,982 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 04:05:25" (1/1) ... [2025-01-09 04:05:25,987 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 04:05:25" (1/1) ... [2025-01-09 04:05:25,996 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2025-01-09 04:05:25,996 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 04:05:25" (1/1) ... [2025-01-09 04:05:25,997 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 04:05:25" (1/1) ... [2025-01-09 04:05:25,999 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 04:05:25" (1/1) ... [2025-01-09 04:05:26,002 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 04:05:25" (1/1) ... [2025-01-09 04:05:26,003 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 04:05:25" (1/1) ... [2025-01-09 04:05:26,004 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 04:05:25" (1/1) ... [2025-01-09 04:05:26,006 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 04:05:25" (1/1) ... [2025-01-09 04:05:26,007 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-01-09 04:05:26,008 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2025-01-09 04:05:26,008 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2025-01-09 04:05:26,008 INFO L274 PluginConnector]: RCFGBuilder initialized [2025-01-09 04:05:26,009 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 04:05:25" (1/1) ... [2025-01-09 04:05:26,013 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-01-09 04:05:26,025 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-09 04:05:26,043 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) [2025-01-09 04:05:26,056 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 [2025-01-09 04:05:26,076 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2025-01-09 04:05:26,077 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2025-01-09 04:05:26,077 INFO L130 BoogieDeclarations]: Found specification of procedure fibo2 [2025-01-09 04:05:26,077 INFO L138 BoogieDeclarations]: Found implementation of procedure fibo2 [2025-01-09 04:05:26,077 INFO L130 BoogieDeclarations]: Found specification of procedure fibo1 [2025-01-09 04:05:26,077 INFO L138 BoogieDeclarations]: Found implementation of procedure fibo1 [2025-01-09 04:05:26,077 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-01-09 04:05:26,078 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-01-09 04:05:26,128 INFO L234 CfgBuilder]: Building ICFG [2025-01-09 04:05:26,131 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2025-01-09 04:05:26,235 INFO L? ?]: Removed 8 outVars from TransFormulas that were not future-live. [2025-01-09 04:05:26,238 INFO L283 CfgBuilder]: Performing block encoding [2025-01-09 04:05:26,250 INFO L307 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-01-09 04:05:26,250 INFO L312 CfgBuilder]: Removed 0 assume(true) statements. [2025-01-09 04:05:26,251 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.01 04:05:26 BoogieIcfgContainer [2025-01-09 04:05:26,251 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2025-01-09 04:05:26,253 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2025-01-09 04:05:26,253 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2025-01-09 04:05:26,259 INFO L274 PluginConnector]: TraceAbstraction initialized [2025-01-09 04:05:26,259 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 09.01 04:05:25" (1/3) ... [2025-01-09 04:05:26,260 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@f0838df and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.01 04:05:26, skipping insertion in model container [2025-01-09 04:05:26,260 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 04:05:25" (2/3) ... [2025-01-09 04:05:26,262 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@f0838df and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.01 04:05:26, skipping insertion in model container [2025-01-09 04:05:26,262 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.01 04:05:26" (3/3) ... [2025-01-09 04:05:26,264 INFO L128 eAbstractionObserver]: Analyzing ICFG fibo_2calls_10-1.c [2025-01-09 04:05:26,280 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2025-01-09 04:05:26,283 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG fibo_2calls_10-1.c that has 3 procedures, 29 locations, 1 initial locations, 0 loop locations, and 1 error locations. [2025-01-09 04:05:26,342 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-01-09 04:05:26,357 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;@4d84be93, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-01-09 04:05:26,358 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2025-01-09 04:05:26,362 INFO L276 IsEmpty]: Start isEmpty. Operand has 29 states, 20 states have (on average 1.3) internal successors, (26), 21 states have internal predecessors, (26), 5 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2025-01-09 04:05:26,367 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2025-01-09 04:05:26,368 INFO L210 NwaCegarLoop]: Found error trace [2025-01-09 04:05:26,368 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-09 04:05:26,368 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-01-09 04:05:26,374 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 04:05:26,375 INFO L85 PathProgramCache]: Analyzing trace with hash 1123300790, now seen corresponding path program 1 times [2025-01-09 04:05:26,382 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 04:05:26,382 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1834474759] [2025-01-09 04:05:26,382 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-09 04:05:26,383 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 04:05:26,437 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 10 statements into 1 equivalence classes. [2025-01-09 04:05:26,454 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 10 of 10 statements. [2025-01-09 04:05:26,454 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 04:05:26,454 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 04:05:26,551 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-09 04:05:26,552 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-09 04:05:26,552 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1834474759] [2025-01-09 04:05:26,553 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1834474759] provided 1 perfect and 0 imperfect interpolant sequences [2025-01-09 04:05:26,553 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-01-09 04:05:26,553 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2025-01-09 04:05:26,554 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1101146965] [2025-01-09 04:05:26,555 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-01-09 04:05:26,557 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-01-09 04:05:26,557 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-09 04:05:26,570 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-01-09 04:05:26,571 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2025-01-09 04:05:26,572 INFO L87 Difference]: Start difference. First operand has 29 states, 20 states have (on average 1.3) internal successors, (26), 21 states have internal predecessors, (26), 5 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) Second operand has 5 states, 4 states have (on average 2.0) internal successors, (8), 5 states have internal predecessors, (8), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2025-01-09 04:05:26,653 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-09 04:05:26,655 INFO L93 Difference]: Finished difference Result 41 states and 52 transitions. [2025-01-09 04:05:26,656 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-01-09 04:05:26,657 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 2.0) internal successors, (8), 5 states have internal predecessors, (8), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 10 [2025-01-09 04:05:26,658 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-09 04:05:26,662 INFO L225 Difference]: With dead ends: 41 [2025-01-09 04:05:26,662 INFO L226 Difference]: Without dead ends: 29 [2025-01-09 04:05:26,666 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2025-01-09 04:05:26,668 INFO L435 NwaCegarLoop]: 30 mSDtfsCounter, 10 mSDsluCounter, 67 mSDsCounter, 0 mSdLazyCounter, 42 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 97 SdHoareTripleChecker+Invalid, 42 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 42 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-01-09 04:05:26,671 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [13 Valid, 97 Invalid, 42 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 42 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-01-09 04:05:26,687 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2025-01-09 04:05:26,709 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 27. [2025-01-09 04:05:26,710 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27 states, 18 states have (on average 1.2222222222222223) internal successors, (22), 19 states have internal predecessors, (22), 5 states have call successors, (5), 2 states have call predecessors, (5), 3 states have return successors, (7), 5 states have call predecessors, (7), 5 states have call successors, (7) [2025-01-09 04:05:26,716 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 34 transitions. [2025-01-09 04:05:26,719 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 34 transitions. Word has length 10 [2025-01-09 04:05:26,720 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-09 04:05:26,720 INFO L471 AbstractCegarLoop]: Abstraction has 27 states and 34 transitions. [2025-01-09 04:05:26,720 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 2.0) internal successors, (8), 5 states have internal predecessors, (8), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2025-01-09 04:05:26,720 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 34 transitions. [2025-01-09 04:05:26,721 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2025-01-09 04:05:26,722 INFO L210 NwaCegarLoop]: Found error trace [2025-01-09 04:05:26,722 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-09 04:05:26,723 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2025-01-09 04:05:26,723 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-01-09 04:05:26,723 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 04:05:26,723 INFO L85 PathProgramCache]: Analyzing trace with hash 1177745932, now seen corresponding path program 1 times [2025-01-09 04:05:26,724 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 04:05:26,724 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [200601246] [2025-01-09 04:05:26,724 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-09 04:05:26,724 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 04:05:26,731 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 11 statements into 1 equivalence classes. [2025-01-09 04:05:26,740 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 11 of 11 statements. [2025-01-09 04:05:26,740 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 04:05:26,743 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 04:05:26,809 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-09 04:05:26,809 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-09 04:05:26,809 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [200601246] [2025-01-09 04:05:26,809 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [200601246] provided 1 perfect and 0 imperfect interpolant sequences [2025-01-09 04:05:26,809 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-01-09 04:05:26,809 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2025-01-09 04:05:26,809 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1375894348] [2025-01-09 04:05:26,810 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-01-09 04:05:26,810 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-01-09 04:05:26,811 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-09 04:05:26,811 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-01-09 04:05:26,812 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2025-01-09 04:05:26,813 INFO L87 Difference]: Start difference. First operand 27 states and 34 transitions. Second operand has 5 states, 4 states have (on average 2.25) internal successors, (9), 5 states have internal predecessors, (9), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2025-01-09 04:05:26,878 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-09 04:05:26,878 INFO L93 Difference]: Finished difference Result 33 states and 41 transitions. [2025-01-09 04:05:26,878 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-01-09 04:05:26,878 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 2.25) internal successors, (9), 5 states have internal predecessors, (9), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 11 [2025-01-09 04:05:26,878 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-09 04:05:26,879 INFO L225 Difference]: With dead ends: 33 [2025-01-09 04:05:26,879 INFO L226 Difference]: Without dead ends: 29 [2025-01-09 04:05:26,879 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2025-01-09 04:05:26,880 INFO L435 NwaCegarLoop]: 25 mSDtfsCounter, 7 mSDsluCounter, 55 mSDsCounter, 0 mSdLazyCounter, 40 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 80 SdHoareTripleChecker+Invalid, 41 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 40 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-01-09 04:05:26,880 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [10 Valid, 80 Invalid, 41 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 40 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-01-09 04:05:26,880 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2025-01-09 04:05:26,886 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 27. [2025-01-09 04:05:26,887 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27 states, 18 states have (on average 1.2222222222222223) internal successors, (22), 19 states have internal predecessors, (22), 5 states have call successors, (5), 2 states have call predecessors, (5), 3 states have return successors, (7), 5 states have call predecessors, (7), 5 states have call successors, (7) [2025-01-09 04:05:26,887 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 34 transitions. [2025-01-09 04:05:26,890 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 34 transitions. Word has length 11 [2025-01-09 04:05:26,890 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-09 04:05:26,890 INFO L471 AbstractCegarLoop]: Abstraction has 27 states and 34 transitions. [2025-01-09 04:05:26,891 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 2.25) internal successors, (9), 5 states have internal predecessors, (9), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2025-01-09 04:05:26,891 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 34 transitions. [2025-01-09 04:05:26,892 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2025-01-09 04:05:26,892 INFO L210 NwaCegarLoop]: Found error trace [2025-01-09 04:05:26,892 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-09 04:05:26,893 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2025-01-09 04:05:26,893 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-01-09 04:05:26,894 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 04:05:26,894 INFO L85 PathProgramCache]: Analyzing trace with hash 2110588723, now seen corresponding path program 1 times [2025-01-09 04:05:26,894 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 04:05:26,894 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [591054991] [2025-01-09 04:05:26,894 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-09 04:05:26,894 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 04:05:26,900 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 23 statements into 1 equivalence classes. [2025-01-09 04:05:26,908 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 23 of 23 statements. [2025-01-09 04:05:26,908 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 04:05:26,908 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 04:05:26,997 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-01-09 04:05:26,998 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-09 04:05:26,998 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [591054991] [2025-01-09 04:05:26,998 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [591054991] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-09 04:05:26,998 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [490001648] [2025-01-09 04:05:26,998 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-09 04:05:26,998 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 04:05:26,998 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-09 04:05:27,002 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) [2025-01-09 04:05:27,006 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 [2025-01-09 04:05:27,039 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 23 statements into 1 equivalence classes. [2025-01-09 04:05:27,059 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 23 of 23 statements. [2025-01-09 04:05:27,059 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 04:05:27,059 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 04:05:27,061 INFO L256 TraceCheckSpWp]: Trace formula consists of 70 conjuncts, 6 conjuncts are in the unsatisfiable core [2025-01-09 04:05:27,064 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-09 04:05:27,140 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-01-09 04:05:27,141 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-01-09 04:05:27,358 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-01-09 04:05:27,359 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [490001648] provided 0 perfect and 2 imperfect interpolant sequences [2025-01-09 04:05:27,359 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-01-09 04:05:27,359 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 7, 7] total 12 [2025-01-09 04:05:27,359 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [68892567] [2025-01-09 04:05:27,359 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-01-09 04:05:27,360 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2025-01-09 04:05:27,360 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-09 04:05:27,361 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2025-01-09 04:05:27,361 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2025-01-09 04:05:27,361 INFO L87 Difference]: Start difference. First operand 27 states and 34 transitions. Second operand has 12 states, 9 states have (on average 3.3333333333333335) internal successors, (30), 12 states have internal predecessors, (30), 8 states have call successors, (8), 1 states have call predecessors, (8), 4 states have return successors, (8), 2 states have call predecessors, (8), 8 states have call successors, (8) [2025-01-09 04:05:27,485 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-09 04:05:27,485 INFO L93 Difference]: Finished difference Result 55 states and 75 transitions. [2025-01-09 04:05:27,486 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2025-01-09 04:05:27,486 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 9 states have (on average 3.3333333333333335) internal successors, (30), 12 states have internal predecessors, (30), 8 states have call successors, (8), 1 states have call predecessors, (8), 4 states have return successors, (8), 2 states have call predecessors, (8), 8 states have call successors, (8) Word has length 23 [2025-01-09 04:05:27,486 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-09 04:05:27,487 INFO L225 Difference]: With dead ends: 55 [2025-01-09 04:05:27,487 INFO L226 Difference]: Without dead ends: 31 [2025-01-09 04:05:27,487 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 39 SyntacticMatches, 2 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=142, Unknown=0, NotChecked=0, Total=182 [2025-01-09 04:05:27,488 INFO L435 NwaCegarLoop]: 21 mSDtfsCounter, 23 mSDsluCounter, 97 mSDsCounter, 0 mSdLazyCounter, 106 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 28 SdHoareTripleChecker+Valid, 118 SdHoareTripleChecker+Invalid, 123 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 106 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-01-09 04:05:27,488 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [28 Valid, 118 Invalid, 123 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 106 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-01-09 04:05:27,489 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states. [2025-01-09 04:05:27,499 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 29. [2025-01-09 04:05:27,500 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 29 states, 19 states have (on average 1.2105263157894737) internal successors, (23), 21 states have internal predecessors, (23), 5 states have call successors, (5), 2 states have call predecessors, (5), 4 states have return successors, (8), 5 states have call predecessors, (8), 5 states have call successors, (8) [2025-01-09 04:05:27,501 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 36 transitions. [2025-01-09 04:05:27,501 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 36 transitions. Word has length 23 [2025-01-09 04:05:27,501 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-09 04:05:27,501 INFO L471 AbstractCegarLoop]: Abstraction has 29 states and 36 transitions. [2025-01-09 04:05:27,501 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 9 states have (on average 3.3333333333333335) internal successors, (30), 12 states have internal predecessors, (30), 8 states have call successors, (8), 1 states have call predecessors, (8), 4 states have return successors, (8), 2 states have call predecessors, (8), 8 states have call successors, (8) [2025-01-09 04:05:27,502 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 36 transitions. [2025-01-09 04:05:27,502 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2025-01-09 04:05:27,502 INFO L210 NwaCegarLoop]: Found error trace [2025-01-09 04:05:27,503 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-09 04:05:27,512 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 [2025-01-09 04:05:27,707 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 04:05:27,707 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-01-09 04:05:27,708 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 04:05:27,708 INFO L85 PathProgramCache]: Analyzing trace with hash 1277869167, now seen corresponding path program 1 times [2025-01-09 04:05:27,708 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 04:05:27,708 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1765873067] [2025-01-09 04:05:27,708 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-09 04:05:27,708 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 04:05:27,714 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 24 statements into 1 equivalence classes. [2025-01-09 04:05:27,720 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 24 of 24 statements. [2025-01-09 04:05:27,720 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 04:05:27,720 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 04:05:27,801 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-01-09 04:05:27,801 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-09 04:05:27,801 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1765873067] [2025-01-09 04:05:27,801 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1765873067] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-09 04:05:27,801 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [548071726] [2025-01-09 04:05:27,802 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-09 04:05:27,802 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 04:05:27,802 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-09 04:05:27,803 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) [2025-01-09 04:05:27,804 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 [2025-01-09 04:05:27,823 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 24 statements into 1 equivalence classes. [2025-01-09 04:05:27,832 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 24 of 24 statements. [2025-01-09 04:05:27,832 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 04:05:27,832 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 04:05:27,833 INFO L256 TraceCheckSpWp]: Trace formula consists of 72 conjuncts, 6 conjuncts are in the unsatisfiable core [2025-01-09 04:05:27,834 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-09 04:05:27,856 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-01-09 04:05:27,856 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-01-09 04:05:28,014 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-01-09 04:05:28,014 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [548071726] provided 0 perfect and 2 imperfect interpolant sequences [2025-01-09 04:05:28,015 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-01-09 04:05:28,015 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 10 [2025-01-09 04:05:28,015 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1941263446] [2025-01-09 04:05:28,015 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-01-09 04:05:28,015 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2025-01-09 04:05:28,015 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-09 04:05:28,015 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2025-01-09 04:05:28,015 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2025-01-09 04:05:28,016 INFO L87 Difference]: Start difference. First operand 29 states and 36 transitions. Second operand has 10 states, 8 states have (on average 3.125) internal successors, (25), 10 states have internal predecessors, (25), 5 states have call successors, (5), 1 states have call predecessors, (5), 3 states have return successors, (5), 2 states have call predecessors, (5), 5 states have call successors, (5) [2025-01-09 04:05:28,106 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-09 04:05:28,106 INFO L93 Difference]: Finished difference Result 40 states and 52 transitions. [2025-01-09 04:05:28,106 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2025-01-09 04:05:28,106 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 8 states have (on average 3.125) internal successors, (25), 10 states have internal predecessors, (25), 5 states have call successors, (5), 1 states have call predecessors, (5), 3 states have return successors, (5), 2 states have call predecessors, (5), 5 states have call successors, (5) Word has length 24 [2025-01-09 04:05:28,107 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-09 04:05:28,107 INFO L225 Difference]: With dead ends: 40 [2025-01-09 04:05:28,107 INFO L226 Difference]: Without dead ends: 36 [2025-01-09 04:05:28,108 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 43 SyntacticMatches, 2 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2025-01-09 04:05:28,108 INFO L435 NwaCegarLoop]: 20 mSDtfsCounter, 16 mSDsluCounter, 103 mSDsCounter, 0 mSdLazyCounter, 129 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 25 SdHoareTripleChecker+Valid, 123 SdHoareTripleChecker+Invalid, 137 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 129 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-01-09 04:05:28,108 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [25 Valid, 123 Invalid, 137 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 129 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-01-09 04:05:28,109 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2025-01-09 04:05:28,112 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 34. [2025-01-09 04:05:28,112 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 34 states, 22 states have (on average 1.1818181818181819) internal successors, (26), 24 states have internal predecessors, (26), 6 states have call successors, (6), 2 states have call predecessors, (6), 5 states have return successors, (13), 7 states have call predecessors, (13), 6 states have call successors, (13) [2025-01-09 04:05:28,113 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 45 transitions. [2025-01-09 04:05:28,113 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 45 transitions. Word has length 24 [2025-01-09 04:05:28,113 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-09 04:05:28,114 INFO L471 AbstractCegarLoop]: Abstraction has 34 states and 45 transitions. [2025-01-09 04:05:28,115 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 8 states have (on average 3.125) internal successors, (25), 10 states have internal predecessors, (25), 5 states have call successors, (5), 1 states have call predecessors, (5), 3 states have return successors, (5), 2 states have call predecessors, (5), 5 states have call successors, (5) [2025-01-09 04:05:28,115 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 45 transitions. [2025-01-09 04:05:28,115 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2025-01-09 04:05:28,115 INFO L210 NwaCegarLoop]: Found error trace [2025-01-09 04:05:28,115 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-09 04:05:28,122 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2025-01-09 04:05:28,316 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,3 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 04:05:28,316 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-01-09 04:05:28,316 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 04:05:28,317 INFO L85 PathProgramCache]: Analyzing trace with hash -2061621832, now seen corresponding path program 1 times [2025-01-09 04:05:28,317 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 04:05:28,317 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [997961820] [2025-01-09 04:05:28,317 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-09 04:05:28,317 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 04:05:28,324 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 36 statements into 1 equivalence classes. [2025-01-09 04:05:28,330 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 36 of 36 statements. [2025-01-09 04:05:28,333 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 04:05:28,334 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 04:05:28,400 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 5 proven. 5 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2025-01-09 04:05:28,400 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-09 04:05:28,400 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [997961820] [2025-01-09 04:05:28,400 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [997961820] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-09 04:05:28,400 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [17568061] [2025-01-09 04:05:28,400 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-09 04:05:28,400 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 04:05:28,400 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-09 04:05:28,402 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) [2025-01-09 04:05:28,404 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 [2025-01-09 04:05:28,426 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 36 statements into 1 equivalence classes. [2025-01-09 04:05:28,439 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 36 of 36 statements. [2025-01-09 04:05:28,439 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 04:05:28,439 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 04:05:28,440 INFO L256 TraceCheckSpWp]: Trace formula consists of 99 conjuncts, 8 conjuncts are in the unsatisfiable core [2025-01-09 04:05:28,441 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-09 04:05:28,507 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 2 proven. 9 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2025-01-09 04:05:28,507 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-01-09 04:05:28,795 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 2 proven. 10 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2025-01-09 04:05:28,795 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [17568061] provided 0 perfect and 2 imperfect interpolant sequences [2025-01-09 04:05:28,795 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-01-09 04:05:28,795 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 8, 9] total 14 [2025-01-09 04:05:28,796 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [275195797] [2025-01-09 04:05:28,796 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-01-09 04:05:28,796 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2025-01-09 04:05:28,796 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-09 04:05:28,797 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2025-01-09 04:05:28,797 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=146, Unknown=0, NotChecked=0, Total=182 [2025-01-09 04:05:28,797 INFO L87 Difference]: Start difference. First operand 34 states and 45 transitions. Second operand has 14 states, 11 states have (on average 4.090909090909091) internal successors, (45), 14 states have internal predecessors, (45), 11 states have call successors, (13), 1 states have call predecessors, (13), 5 states have return successors, (13), 3 states have call predecessors, (13), 11 states have call successors, (13) [2025-01-09 04:05:28,918 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-09 04:05:28,918 INFO L93 Difference]: Finished difference Result 69 states and 100 transitions. [2025-01-09 04:05:28,919 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2025-01-09 04:05:28,919 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 11 states have (on average 4.090909090909091) internal successors, (45), 14 states have internal predecessors, (45), 11 states have call successors, (13), 1 states have call predecessors, (13), 5 states have return successors, (13), 3 states have call predecessors, (13), 11 states have call successors, (13) Word has length 36 [2025-01-09 04:05:28,919 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-09 04:05:28,919 INFO L225 Difference]: With dead ends: 69 [2025-01-09 04:05:28,919 INFO L226 Difference]: Without dead ends: 38 [2025-01-09 04:05:28,920 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 82 GetRequests, 64 SyntacticMatches, 3 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=54, Invalid=218, Unknown=0, NotChecked=0, Total=272 [2025-01-09 04:05:28,920 INFO L435 NwaCegarLoop]: 20 mSDtfsCounter, 24 mSDsluCounter, 126 mSDsCounter, 0 mSdLazyCounter, 153 mSolverCounterSat, 27 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 29 SdHoareTripleChecker+Valid, 146 SdHoareTripleChecker+Invalid, 180 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 27 IncrementalHoareTripleChecker+Valid, 153 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-01-09 04:05:28,920 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [29 Valid, 146 Invalid, 180 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [27 Valid, 153 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-01-09 04:05:28,921 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states. [2025-01-09 04:05:28,924 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 36. [2025-01-09 04:05:28,924 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 36 states, 23 states have (on average 1.173913043478261) internal successors, (27), 26 states have internal predecessors, (27), 6 states have call successors, (6), 2 states have call predecessors, (6), 6 states have return successors, (14), 7 states have call predecessors, (14), 6 states have call successors, (14) [2025-01-09 04:05:28,925 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 47 transitions. [2025-01-09 04:05:28,925 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 47 transitions. Word has length 36 [2025-01-09 04:05:28,925 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-09 04:05:28,925 INFO L471 AbstractCegarLoop]: Abstraction has 36 states and 47 transitions. [2025-01-09 04:05:28,925 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 11 states have (on average 4.090909090909091) internal successors, (45), 14 states have internal predecessors, (45), 11 states have call successors, (13), 1 states have call predecessors, (13), 5 states have return successors, (13), 3 states have call predecessors, (13), 11 states have call successors, (13) [2025-01-09 04:05:28,925 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 47 transitions. [2025-01-09 04:05:28,926 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2025-01-09 04:05:28,926 INFO L210 NwaCegarLoop]: Found error trace [2025-01-09 04:05:28,926 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-09 04:05:28,932 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2025-01-09 04:05:29,126 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 04:05:29,127 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-01-09 04:05:29,127 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 04:05:29,127 INFO L85 PathProgramCache]: Analyzing trace with hash 1167294498, now seen corresponding path program 1 times [2025-01-09 04:05:29,127 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 04:05:29,127 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1835934659] [2025-01-09 04:05:29,127 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-09 04:05:29,127 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 04:05:29,130 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 37 statements into 1 equivalence classes. [2025-01-09 04:05:29,134 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 37 of 37 statements. [2025-01-09 04:05:29,134 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 04:05:29,134 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 04:05:29,213 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 4 proven. 3 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2025-01-09 04:05:29,214 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-09 04:05:29,214 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1835934659] [2025-01-09 04:05:29,214 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1835934659] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-09 04:05:29,214 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2011551652] [2025-01-09 04:05:29,214 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-09 04:05:29,214 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 04:05:29,214 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-09 04:05:29,216 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) [2025-01-09 04:05:29,217 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 [2025-01-09 04:05:29,236 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 37 statements into 1 equivalence classes. [2025-01-09 04:05:29,244 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 37 of 37 statements. [2025-01-09 04:05:29,244 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 04:05:29,244 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 04:05:29,245 INFO L256 TraceCheckSpWp]: Trace formula consists of 101 conjuncts, 8 conjuncts are in the unsatisfiable core [2025-01-09 04:05:29,246 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-09 04:05:29,311 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 2 proven. 9 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2025-01-09 04:05:29,311 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-01-09 04:05:29,566 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 2 proven. 11 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2025-01-09 04:05:29,566 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2011551652] provided 0 perfect and 2 imperfect interpolant sequences [2025-01-09 04:05:29,566 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-01-09 04:05:29,566 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 8, 9] total 18 [2025-01-09 04:05:29,566 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [943963252] [2025-01-09 04:05:29,566 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-01-09 04:05:29,567 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2025-01-09 04:05:29,567 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-09 04:05:29,567 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2025-01-09 04:05:29,567 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=257, Unknown=0, NotChecked=0, Total=306 [2025-01-09 04:05:29,567 INFO L87 Difference]: Start difference. First operand 36 states and 47 transitions. Second operand has 18 states, 16 states have (on average 3.125) internal successors, (50), 18 states have internal predecessors, (50), 11 states have call successors, (13), 1 states have call predecessors, (13), 7 states have return successors, (13), 6 states have call predecessors, (13), 11 states have call successors, (13) [2025-01-09 04:05:29,911 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-09 04:05:29,911 INFO L93 Difference]: Finished difference Result 101 states and 161 transitions. [2025-01-09 04:05:29,911 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2025-01-09 04:05:29,912 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 16 states have (on average 3.125) internal successors, (50), 18 states have internal predecessors, (50), 11 states have call successors, (13), 1 states have call predecessors, (13), 7 states have return successors, (13), 6 states have call predecessors, (13), 11 states have call successors, (13) Word has length 37 [2025-01-09 04:05:29,912 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-09 04:05:29,913 INFO L225 Difference]: With dead ends: 101 [2025-01-09 04:05:29,913 INFO L226 Difference]: Without dead ends: 68 [2025-01-09 04:05:29,913 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 97 GetRequests, 69 SyntacticMatches, 3 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 107 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=124, Invalid=578, Unknown=0, NotChecked=0, Total=702 [2025-01-09 04:05:29,914 INFO L435 NwaCegarLoop]: 33 mSDtfsCounter, 34 mSDsluCounter, 270 mSDsCounter, 0 mSdLazyCounter, 395 mSolverCounterSat, 41 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 37 SdHoareTripleChecker+Valid, 303 SdHoareTripleChecker+Invalid, 436 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 41 IncrementalHoareTripleChecker+Valid, 395 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2025-01-09 04:05:29,914 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [37 Valid, 303 Invalid, 436 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [41 Valid, 395 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2025-01-09 04:05:29,914 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 68 states. [2025-01-09 04:05:29,922 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 68 to 56. [2025-01-09 04:05:29,922 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 56 states, 35 states have (on average 1.1714285714285715) internal successors, (41), 39 states have internal predecessors, (41), 11 states have call successors, (11), 3 states have call predecessors, (11), 9 states have return successors, (34), 13 states have call predecessors, (34), 11 states have call successors, (34) [2025-01-09 04:05:29,923 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 86 transitions. [2025-01-09 04:05:29,924 INFO L78 Accepts]: Start accepts. Automaton has 56 states and 86 transitions. Word has length 37 [2025-01-09 04:05:29,924 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-09 04:05:29,924 INFO L471 AbstractCegarLoop]: Abstraction has 56 states and 86 transitions. [2025-01-09 04:05:29,924 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 16 states have (on average 3.125) internal successors, (50), 18 states have internal predecessors, (50), 11 states have call successors, (13), 1 states have call predecessors, (13), 7 states have return successors, (13), 6 states have call predecessors, (13), 11 states have call successors, (13) [2025-01-09 04:05:29,924 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states and 86 transitions. [2025-01-09 04:05:29,925 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2025-01-09 04:05:29,925 INFO L210 NwaCegarLoop]: Found error trace [2025-01-09 04:05:29,926 INFO L218 NwaCegarLoop]: trace histogram [4, 4, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-09 04:05:29,934 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2025-01-09 04:05:30,126 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2025-01-09 04:05:30,126 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-01-09 04:05:30,127 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 04:05:30,127 INFO L85 PathProgramCache]: Analyzing trace with hash 384535367, now seen corresponding path program 1 times [2025-01-09 04:05:30,127 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 04:05:30,127 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1984636954] [2025-01-09 04:05:30,127 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-09 04:05:30,127 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 04:05:30,130 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 51 statements into 1 equivalence classes. [2025-01-09 04:05:30,135 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 51 of 51 statements. [2025-01-09 04:05:30,135 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 04:05:30,135 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 04:05:30,218 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 12 proven. 12 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2025-01-09 04:05:30,218 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-09 04:05:30,218 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1984636954] [2025-01-09 04:05:30,218 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1984636954] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-09 04:05:30,218 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1235853948] [2025-01-09 04:05:30,219 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-09 04:05:30,219 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 04:05:30,219 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-09 04:05:30,223 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) [2025-01-09 04:05:30,224 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 [2025-01-09 04:05:30,245 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 51 statements into 1 equivalence classes. [2025-01-09 04:05:30,255 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 51 of 51 statements. [2025-01-09 04:05:30,255 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 04:05:30,256 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 04:05:30,256 INFO L256 TraceCheckSpWp]: Trace formula consists of 132 conjuncts, 10 conjuncts are in the unsatisfiable core [2025-01-09 04:05:30,257 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-09 04:05:30,311 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 4 proven. 23 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2025-01-09 04:05:30,312 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-01-09 04:05:30,692 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 4 proven. 28 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2025-01-09 04:05:30,692 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1235853948] provided 0 perfect and 2 imperfect interpolant sequences [2025-01-09 04:05:30,692 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-01-09 04:05:30,692 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 9, 11] total 17 [2025-01-09 04:05:30,692 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1297742716] [2025-01-09 04:05:30,692 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-01-09 04:05:30,692 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2025-01-09 04:05:30,692 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-09 04:05:30,693 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2025-01-09 04:05:30,693 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=217, Unknown=0, NotChecked=0, Total=272 [2025-01-09 04:05:30,693 INFO L87 Difference]: Start difference. First operand 56 states and 86 transitions. Second operand has 17 states, 15 states have (on average 3.6666666666666665) internal successors, (55), 17 states have internal predecessors, (55), 12 states have call successors, (14), 1 states have call predecessors, (14), 8 states have return successors, (18), 8 states have call predecessors, (18), 12 states have call successors, (18) [2025-01-09 04:05:30,835 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-09 04:05:30,835 INFO L93 Difference]: Finished difference Result 102 states and 193 transitions. [2025-01-09 04:05:30,835 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2025-01-09 04:05:30,835 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 15 states have (on average 3.6666666666666665) internal successors, (55), 17 states have internal predecessors, (55), 12 states have call successors, (14), 1 states have call predecessors, (14), 8 states have return successors, (18), 8 states have call predecessors, (18), 12 states have call successors, (18) Word has length 51 [2025-01-09 04:05:30,836 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-09 04:05:30,837 INFO L225 Difference]: With dead ends: 102 [2025-01-09 04:05:30,839 INFO L226 Difference]: Without dead ends: 98 [2025-01-09 04:05:30,839 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 116 GetRequests, 92 SyntacticMatches, 4 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 95 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=93, Invalid=369, Unknown=0, NotChecked=0, Total=462 [2025-01-09 04:05:30,840 INFO L435 NwaCegarLoop]: 20 mSDtfsCounter, 33 mSDsluCounter, 144 mSDsCounter, 0 mSdLazyCounter, 166 mSolverCounterSat, 34 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 45 SdHoareTripleChecker+Valid, 164 SdHoareTripleChecker+Invalid, 200 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 34 IncrementalHoareTripleChecker+Valid, 166 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-01-09 04:05:30,841 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [45 Valid, 164 Invalid, 200 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [34 Valid, 166 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-01-09 04:05:30,841 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 98 states. [2025-01-09 04:05:30,856 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 98 to 64. [2025-01-09 04:05:30,859 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 64 states, 40 states have (on average 1.15) internal successors, (46), 44 states have internal predecessors, (46), 12 states have call successors, (12), 3 states have call predecessors, (12), 11 states have return successors, (48), 16 states have call predecessors, (48), 12 states have call successors, (48) [2025-01-09 04:05:30,861 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 64 states to 64 states and 106 transitions. [2025-01-09 04:05:30,863 INFO L78 Accepts]: Start accepts. Automaton has 64 states and 106 transitions. Word has length 51 [2025-01-09 04:05:30,863 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-09 04:05:30,863 INFO L471 AbstractCegarLoop]: Abstraction has 64 states and 106 transitions. [2025-01-09 04:05:30,863 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 15 states have (on average 3.6666666666666665) internal successors, (55), 17 states have internal predecessors, (55), 12 states have call successors, (14), 1 states have call predecessors, (14), 8 states have return successors, (18), 8 states have call predecessors, (18), 12 states have call successors, (18) [2025-01-09 04:05:30,863 INFO L276 IsEmpty]: Start isEmpty. Operand 64 states and 106 transitions. [2025-01-09 04:05:30,866 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2025-01-09 04:05:30,866 INFO L210 NwaCegarLoop]: Found error trace [2025-01-09 04:05:30,866 INFO L218 NwaCegarLoop]: trace histogram [7, 7, 6, 6, 6, 5, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-09 04:05:30,871 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2025-01-09 04:05:31,066 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,6 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 04:05:31,066 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-01-09 04:05:31,067 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 04:05:31,067 INFO L85 PathProgramCache]: Analyzing trace with hash -586612948, now seen corresponding path program 1 times [2025-01-09 04:05:31,067 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 04:05:31,067 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2038977017] [2025-01-09 04:05:31,067 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-09 04:05:31,067 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 04:05:31,071 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 93 statements into 1 equivalence classes. [2025-01-09 04:05:31,078 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 93 of 93 statements. [2025-01-09 04:05:31,078 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 04:05:31,078 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 04:05:31,230 INFO L134 CoverageAnalysis]: Checked inductivity of 193 backedges. 40 proven. 59 refuted. 0 times theorem prover too weak. 94 trivial. 0 not checked. [2025-01-09 04:05:31,230 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-09 04:05:31,231 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2038977017] [2025-01-09 04:05:31,231 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2038977017] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-09 04:05:31,231 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2077656467] [2025-01-09 04:05:31,231 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-09 04:05:31,231 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 04:05:31,231 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-09 04:05:31,233 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) [2025-01-09 04:05:31,235 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 [2025-01-09 04:05:31,266 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 93 statements into 1 equivalence classes. [2025-01-09 04:05:31,284 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 93 of 93 statements. [2025-01-09 04:05:31,285 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 04:05:31,285 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 04:05:31,286 INFO L256 TraceCheckSpWp]: Trace formula consists of 225 conjuncts, 12 conjuncts are in the unsatisfiable core [2025-01-09 04:05:31,287 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-09 04:05:31,383 INFO L134 CoverageAnalysis]: Checked inductivity of 193 backedges. 13 proven. 92 refuted. 0 times theorem prover too weak. 88 trivial. 0 not checked. [2025-01-09 04:05:31,383 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-01-09 04:05:32,027 INFO L134 CoverageAnalysis]: Checked inductivity of 193 backedges. 13 proven. 102 refuted. 0 times theorem prover too weak. 78 trivial. 0 not checked. [2025-01-09 04:05:32,028 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2077656467] provided 0 perfect and 2 imperfect interpolant sequences [2025-01-09 04:05:32,028 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-01-09 04:05:32,028 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 10, 13] total 23 [2025-01-09 04:05:32,028 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [298659206] [2025-01-09 04:05:32,028 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-01-09 04:05:32,028 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2025-01-09 04:05:32,028 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-09 04:05:32,029 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2025-01-09 04:05:32,030 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=67, Invalid=439, Unknown=0, NotChecked=0, Total=506 [2025-01-09 04:05:32,030 INFO L87 Difference]: Start difference. First operand 64 states and 106 transitions. Second operand has 23 states, 21 states have (on average 3.619047619047619) internal successors, (76), 23 states have internal predecessors, (76), 18 states have call successors, (23), 1 states have call predecessors, (23), 9 states have return successors, (27), 10 states have call predecessors, (27), 18 states have call successors, (27) [2025-01-09 04:05:32,532 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-09 04:05:32,532 INFO L93 Difference]: Finished difference Result 177 states and 369 transitions. [2025-01-09 04:05:32,532 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2025-01-09 04:05:32,533 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 21 states have (on average 3.619047619047619) internal successors, (76), 23 states have internal predecessors, (76), 18 states have call successors, (23), 1 states have call predecessors, (23), 9 states have return successors, (27), 10 states have call predecessors, (27), 18 states have call successors, (27) Word has length 93 [2025-01-09 04:05:32,533 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-09 04:05:32,534 INFO L225 Difference]: With dead ends: 177 [2025-01-09 04:05:32,535 INFO L226 Difference]: Without dead ends: 104 [2025-01-09 04:05:32,536 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 212 GetRequests, 169 SyntacticMatches, 5 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 255 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=263, Invalid=1297, Unknown=0, NotChecked=0, Total=1560 [2025-01-09 04:05:32,537 INFO L435 NwaCegarLoop]: 32 mSDtfsCounter, 96 mSDsluCounter, 293 mSDsCounter, 0 mSdLazyCounter, 500 mSolverCounterSat, 117 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 97 SdHoareTripleChecker+Valid, 325 SdHoareTripleChecker+Invalid, 617 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 117 IncrementalHoareTripleChecker+Valid, 500 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2025-01-09 04:05:32,537 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [97 Valid, 325 Invalid, 617 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [117 Valid, 500 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2025-01-09 04:05:32,537 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 104 states. [2025-01-09 04:05:32,554 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 104 to 93. [2025-01-09 04:05:32,555 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 93 states, 62 states have (on average 1.1774193548387097) internal successors, (73), 64 states have internal predecessors, (73), 16 states have call successors, (16), 8 states have call predecessors, (16), 14 states have return successors, (43), 20 states have call predecessors, (43), 16 states have call successors, (43) [2025-01-09 04:05:32,556 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 93 states to 93 states and 132 transitions. [2025-01-09 04:05:32,557 INFO L78 Accepts]: Start accepts. Automaton has 93 states and 132 transitions. Word has length 93 [2025-01-09 04:05:32,557 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-09 04:05:32,557 INFO L471 AbstractCegarLoop]: Abstraction has 93 states and 132 transitions. [2025-01-09 04:05:32,557 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 21 states have (on average 3.619047619047619) internal successors, (76), 23 states have internal predecessors, (76), 18 states have call successors, (23), 1 states have call predecessors, (23), 9 states have return successors, (27), 10 states have call predecessors, (27), 18 states have call successors, (27) [2025-01-09 04:05:32,558 INFO L276 IsEmpty]: Start isEmpty. Operand 93 states and 132 transitions. [2025-01-09 04:05:32,561 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 160 [2025-01-09 04:05:32,562 INFO L210 NwaCegarLoop]: Found error trace [2025-01-09 04:05:32,562 INFO L218 NwaCegarLoop]: trace histogram [14, 14, 10, 9, 9, 7, 7, 7, 7, 7, 7, 7, 7, 6, 4, 4, 4, 4, 4, 4, 4, 4, 2, 1, 1, 1, 1, 1, 1, 1] [2025-01-09 04:05:32,568 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2025-01-09 04:05:32,762 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable7 [2025-01-09 04:05:32,762 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-01-09 04:05:32,763 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 04:05:32,763 INFO L85 PathProgramCache]: Analyzing trace with hash 437944761, now seen corresponding path program 2 times [2025-01-09 04:05:32,763 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 04:05:32,763 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [724199803] [2025-01-09 04:05:32,763 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-01-09 04:05:32,763 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 04:05:32,769 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 159 statements into 2 equivalence classes. [2025-01-09 04:05:32,789 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 159 of 159 statements. [2025-01-09 04:05:32,789 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-01-09 04:05:32,789 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 04:05:32,981 INFO L134 CoverageAnalysis]: Checked inductivity of 682 backedges. 43 proven. 179 refuted. 0 times theorem prover too weak. 460 trivial. 0 not checked. [2025-01-09 04:05:32,981 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-09 04:05:32,981 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [724199803] [2025-01-09 04:05:32,981 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [724199803] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-09 04:05:32,981 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1230887272] [2025-01-09 04:05:32,981 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-01-09 04:05:32,981 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 04:05:32,981 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-09 04:05:32,984 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) [2025-01-09 04:05:32,986 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 [2025-01-09 04:05:33,021 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 159 statements into 2 equivalence classes. [2025-01-09 04:05:33,047 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 159 of 159 statements. [2025-01-09 04:05:33,047 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-01-09 04:05:33,048 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 04:05:33,049 INFO L256 TraceCheckSpWp]: Trace formula consists of 372 conjuncts, 14 conjuncts are in the unsatisfiable core [2025-01-09 04:05:33,051 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-09 04:05:33,141 INFO L134 CoverageAnalysis]: Checked inductivity of 682 backedges. 30 proven. 244 refuted. 0 times theorem prover too weak. 408 trivial. 0 not checked. [2025-01-09 04:05:33,141 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-01-09 04:05:34,084 INFO L134 CoverageAnalysis]: Checked inductivity of 682 backedges. 30 proven. 260 refuted. 0 times theorem prover too weak. 392 trivial. 0 not checked. [2025-01-09 04:05:34,084 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1230887272] provided 0 perfect and 2 imperfect interpolant sequences [2025-01-09 04:05:34,084 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-01-09 04:05:34,084 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 11, 15] total 23 [2025-01-09 04:05:34,085 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1023504632] [2025-01-09 04:05:34,086 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-01-09 04:05:34,086 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2025-01-09 04:05:34,086 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-09 04:05:34,086 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2025-01-09 04:05:34,087 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=96, Invalid=410, Unknown=0, NotChecked=0, Total=506 [2025-01-09 04:05:34,087 INFO L87 Difference]: Start difference. First operand 93 states and 132 transitions. Second operand has 23 states, 21 states have (on average 3.619047619047619) internal successors, (76), 23 states have internal predecessors, (76), 18 states have call successors, (22), 1 states have call predecessors, (22), 12 states have return successors, (30), 12 states have call predecessors, (30), 18 states have call successors, (30) [2025-01-09 04:05:34,310 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-09 04:05:34,310 INFO L93 Difference]: Finished difference Result 132 states and 227 transitions. [2025-01-09 04:05:34,310 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2025-01-09 04:05:34,311 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 21 states have (on average 3.619047619047619) internal successors, (76), 23 states have internal predecessors, (76), 18 states have call successors, (22), 1 states have call predecessors, (22), 12 states have return successors, (30), 12 states have call predecessors, (30), 18 states have call successors, (30) Word has length 159 [2025-01-09 04:05:34,311 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-09 04:05:34,312 INFO L225 Difference]: With dead ends: 132 [2025-01-09 04:05:34,312 INFO L226 Difference]: Without dead ends: 128 [2025-01-09 04:05:34,313 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 338 GetRequests, 302 SyntacticMatches, 6 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 290 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=191, Invalid=801, Unknown=0, NotChecked=0, Total=992 [2025-01-09 04:05:34,313 INFO L435 NwaCegarLoop]: 20 mSDtfsCounter, 70 mSDsluCounter, 176 mSDsCounter, 0 mSdLazyCounter, 226 mSolverCounterSat, 70 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 82 SdHoareTripleChecker+Valid, 196 SdHoareTripleChecker+Invalid, 296 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 70 IncrementalHoareTripleChecker+Valid, 226 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2025-01-09 04:05:34,313 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [82 Valid, 196 Invalid, 296 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [70 Valid, 226 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2025-01-09 04:05:34,314 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 128 states. [2025-01-09 04:05:34,324 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 128 to 118. [2025-01-09 04:05:34,324 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 118 states, 77 states have (on average 1.1428571428571428) internal successors, (88), 79 states have internal predecessors, (88), 21 states have call successors, (21), 8 states have call predecessors, (21), 19 states have return successors, (85), 30 states have call predecessors, (85), 21 states have call successors, (85) [2025-01-09 04:05:34,326 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 118 states to 118 states and 194 transitions. [2025-01-09 04:05:34,326 INFO L78 Accepts]: Start accepts. Automaton has 118 states and 194 transitions. Word has length 159 [2025-01-09 04:05:34,326 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-09 04:05:34,326 INFO L471 AbstractCegarLoop]: Abstraction has 118 states and 194 transitions. [2025-01-09 04:05:34,326 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 21 states have (on average 3.619047619047619) internal successors, (76), 23 states have internal predecessors, (76), 18 states have call successors, (22), 1 states have call predecessors, (22), 12 states have return successors, (30), 12 states have call predecessors, (30), 18 states have call successors, (30) [2025-01-09 04:05:34,326 INFO L276 IsEmpty]: Start isEmpty. Operand 118 states and 194 transitions. [2025-01-09 04:05:34,328 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 285 [2025-01-09 04:05:34,329 INFO L210 NwaCegarLoop]: Found error trace [2025-01-09 04:05:34,329 INFO L218 NwaCegarLoop]: trace histogram [21, 21, 20, 20, 18, 16, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 8, 6, 4, 3, 1, 1, 1, 1, 1, 1, 1] [2025-01-09 04:05:34,337 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2025-01-09 04:05:34,533 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,8 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 04:05:34,533 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-01-09 04:05:34,533 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 04:05:34,533 INFO L85 PathProgramCache]: Analyzing trace with hash -1279109938, now seen corresponding path program 2 times [2025-01-09 04:05:34,533 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 04:05:34,533 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2054112816] [2025-01-09 04:05:34,533 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-01-09 04:05:34,533 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 04:05:34,544 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 284 statements into 2 equivalence classes. [2025-01-09 04:05:34,575 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 284 of 284 statements. [2025-01-09 04:05:34,575 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-01-09 04:05:34,575 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 04:05:34,946 INFO L134 CoverageAnalysis]: Checked inductivity of 2233 backedges. 158 proven. 490 refuted. 0 times theorem prover too weak. 1585 trivial. 0 not checked. [2025-01-09 04:05:34,946 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-09 04:05:34,946 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2054112816] [2025-01-09 04:05:34,947 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2054112816] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-09 04:05:34,947 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1365628347] [2025-01-09 04:05:34,947 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-01-09 04:05:34,947 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 04:05:34,947 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-09 04:05:34,949 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) [2025-01-09 04:05:34,959 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 [2025-01-09 04:05:35,017 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 284 statements into 2 equivalence classes. [2025-01-09 04:05:35,070 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 284 of 284 statements. [2025-01-09 04:05:35,070 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-01-09 04:05:35,070 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 04:05:35,072 INFO L256 TraceCheckSpWp]: Trace formula consists of 649 conjuncts, 16 conjuncts are in the unsatisfiable core [2025-01-09 04:05:35,077 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-09 04:05:35,206 INFO L134 CoverageAnalysis]: Checked inductivity of 2233 backedges. 87 proven. 569 refuted. 0 times theorem prover too weak. 1577 trivial. 0 not checked. [2025-01-09 04:05:35,206 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-01-09 04:05:36,659 INFO L134 CoverageAnalysis]: Checked inductivity of 2233 backedges. 87 proven. 593 refuted. 0 times theorem prover too weak. 1553 trivial. 0 not checked. [2025-01-09 04:05:36,661 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1365628347] provided 0 perfect and 2 imperfect interpolant sequences [2025-01-09 04:05:36,661 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-01-09 04:05:36,661 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 12, 17] total 29 [2025-01-09 04:05:36,661 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [142553604] [2025-01-09 04:05:36,661 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-01-09 04:05:36,662 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2025-01-09 04:05:36,662 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-09 04:05:36,663 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2025-01-09 04:05:36,663 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=97, Invalid=715, Unknown=0, NotChecked=0, Total=812 [2025-01-09 04:05:36,664 INFO L87 Difference]: Start difference. First operand 118 states and 194 transitions. Second operand has 29 states, 27 states have (on average 3.5185185185185186) internal successors, (95), 29 states have internal predecessors, (95), 24 states have call successors, (30), 1 states have call predecessors, (30), 12 states have return successors, (37), 13 states have call predecessors, (37), 24 states have call successors, (37) [2025-01-09 04:05:37,318 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-09 04:05:37,319 INFO L93 Difference]: Finished difference Result 323 states and 666 transitions. [2025-01-09 04:05:37,319 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2025-01-09 04:05:37,319 INFO L78 Accepts]: Start accepts. Automaton has has 29 states, 27 states have (on average 3.5185185185185186) internal successors, (95), 29 states have internal predecessors, (95), 24 states have call successors, (30), 1 states have call predecessors, (30), 12 states have return successors, (37), 13 states have call predecessors, (37), 24 states have call successors, (37) Word has length 284 [2025-01-09 04:05:37,320 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-09 04:05:37,322 INFO L225 Difference]: With dead ends: 323 [2025-01-09 04:05:37,323 INFO L226 Difference]: Without dead ends: 214 [2025-01-09 04:05:37,325 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 606 GetRequests, 547 SyntacticMatches, 7 SemanticMatches, 52 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 585 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=449, Invalid=2413, Unknown=0, NotChecked=0, Total=2862 [2025-01-09 04:05:37,326 INFO L435 NwaCegarLoop]: 45 mSDtfsCounter, 158 mSDsluCounter, 404 mSDsCounter, 0 mSdLazyCounter, 724 mSolverCounterSat, 200 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 159 SdHoareTripleChecker+Valid, 449 SdHoareTripleChecker+Invalid, 924 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 200 IncrementalHoareTripleChecker+Valid, 724 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2025-01-09 04:05:37,326 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [159 Valid, 449 Invalid, 924 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [200 Valid, 724 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2025-01-09 04:05:37,327 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 214 states. [2025-01-09 04:05:37,354 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 214 to 184. [2025-01-09 04:05:37,355 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 184 states, 123 states have (on average 1.1869918699186992) internal successors, (146), 123 states have internal predecessors, (146), 35 states have call successors, (35), 17 states have call predecessors, (35), 25 states have return successors, (120), 43 states have call predecessors, (120), 35 states have call successors, (120) [2025-01-09 04:05:37,357 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 184 states to 184 states and 301 transitions. [2025-01-09 04:05:37,357 INFO L78 Accepts]: Start accepts. Automaton has 184 states and 301 transitions. Word has length 284 [2025-01-09 04:05:37,357 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-09 04:05:37,357 INFO L471 AbstractCegarLoop]: Abstraction has 184 states and 301 transitions. [2025-01-09 04:05:37,358 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 29 states, 27 states have (on average 3.5185185185185186) internal successors, (95), 29 states have internal predecessors, (95), 24 states have call successors, (30), 1 states have call predecessors, (30), 12 states have return successors, (37), 13 states have call predecessors, (37), 24 states have call successors, (37) [2025-01-09 04:05:37,358 INFO L276 IsEmpty]: Start isEmpty. Operand 184 states and 301 transitions. [2025-01-09 04:05:37,361 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 390 [2025-01-09 04:05:37,362 INFO L210 NwaCegarLoop]: Found error trace [2025-01-09 04:05:37,362 INFO L218 NwaCegarLoop]: trace histogram [32, 32, 25, 25, 24, 19, 16, 16, 16, 16, 16, 16, 16, 12, 12, 12, 12, 12, 12, 12, 12, 8, 6, 3, 1, 1, 1, 1, 1, 1, 1] [2025-01-09 04:05:37,368 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2025-01-09 04:05:37,565 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,9 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 04:05:37,565 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-01-09 04:05:37,565 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 04:05:37,565 INFO L85 PathProgramCache]: Analyzing trace with hash 1695767594, now seen corresponding path program 3 times [2025-01-09 04:05:37,565 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 04:05:37,565 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [553433587] [2025-01-09 04:05:37,566 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-01-09 04:05:37,566 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 04:05:37,577 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 389 statements into 22 equivalence classes. [2025-01-09 04:05:37,583 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) and asserted 50 of 389 statements. [2025-01-09 04:05:37,583 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2025-01-09 04:05:37,583 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 04:05:37,650 INFO L134 CoverageAnalysis]: Checked inductivity of 4375 backedges. 515 proven. 4 refuted. 0 times theorem prover too weak. 3856 trivial. 0 not checked. [2025-01-09 04:05:37,650 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-09 04:05:37,650 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [553433587] [2025-01-09 04:05:37,650 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [553433587] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-09 04:05:37,650 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2027039516] [2025-01-09 04:05:37,650 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-01-09 04:05:37,650 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 04:05:37,650 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-09 04:05:37,652 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) [2025-01-09 04:05:37,654 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 [2025-01-09 04:05:37,732 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 389 statements into 22 equivalence classes. [2025-01-09 04:05:37,742 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) and asserted 50 of 389 statements. [2025-01-09 04:05:37,743 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2025-01-09 04:05:37,743 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 04:05:37,743 INFO L256 TraceCheckSpWp]: Trace formula consists of 130 conjuncts, 8 conjuncts are in the unsatisfiable core [2025-01-09 04:05:37,747 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-09 04:05:37,800 INFO L134 CoverageAnalysis]: Checked inductivity of 4375 backedges. 760 proven. 6 refuted. 0 times theorem prover too weak. 3609 trivial. 0 not checked. [2025-01-09 04:05:37,800 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-01-09 04:05:38,591 INFO L134 CoverageAnalysis]: Checked inductivity of 4375 backedges. 619 proven. 12 refuted. 0 times theorem prover too weak. 3744 trivial. 0 not checked. [2025-01-09 04:05:38,591 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2027039516] provided 0 perfect and 2 imperfect interpolant sequences [2025-01-09 04:05:38,591 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-01-09 04:05:38,591 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 16 [2025-01-09 04:05:38,591 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1156095694] [2025-01-09 04:05:38,591 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-01-09 04:05:38,593 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2025-01-09 04:05:38,593 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-09 04:05:38,593 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2025-01-09 04:05:38,593 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=189, Unknown=0, NotChecked=0, Total=240 [2025-01-09 04:05:38,593 INFO L87 Difference]: Start difference. First operand 184 states and 301 transitions. Second operand has 16 states, 16 states have (on average 3.5) internal successors, (56), 16 states have internal predecessors, (56), 7 states have call successors, (13), 2 states have call predecessors, (13), 5 states have return successors, (17), 5 states have call predecessors, (17), 7 states have call successors, (17) [2025-01-09 04:05:38,708 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-09 04:05:38,708 INFO L93 Difference]: Finished difference Result 360 states and 621 transitions. [2025-01-09 04:05:38,708 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2025-01-09 04:05:38,709 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 3.5) internal successors, (56), 16 states have internal predecessors, (56), 7 states have call successors, (13), 2 states have call predecessors, (13), 5 states have return successors, (17), 5 states have call predecessors, (17), 7 states have call successors, (17) Word has length 389 [2025-01-09 04:05:38,709 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-09 04:05:38,711 INFO L225 Difference]: With dead ends: 360 [2025-01-09 04:05:38,711 INFO L226 Difference]: Without dead ends: 181 [2025-01-09 04:05:38,712 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 789 GetRequests, 767 SyntacticMatches, 4 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 92 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=84, Invalid=296, Unknown=0, NotChecked=0, Total=380 [2025-01-09 04:05:38,712 INFO L435 NwaCegarLoop]: 26 mSDtfsCounter, 30 mSDsluCounter, 126 mSDsCounter, 0 mSdLazyCounter, 143 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 30 SdHoareTripleChecker+Valid, 152 SdHoareTripleChecker+Invalid, 163 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 143 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-01-09 04:05:38,713 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [30 Valid, 152 Invalid, 163 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 143 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-01-09 04:05:38,713 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 181 states. [2025-01-09 04:05:38,722 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 181 to 174. [2025-01-09 04:05:38,723 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 174 states, 118 states have (on average 1.1694915254237288) internal successors, (138), 116 states have internal predecessors, (138), 33 states have call successors, (33), 18 states have call predecessors, (33), 22 states have return successors, (95), 39 states have call predecessors, (95), 33 states have call successors, (95) [2025-01-09 04:05:38,724 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 174 states to 174 states and 266 transitions. [2025-01-09 04:05:38,725 INFO L78 Accepts]: Start accepts. Automaton has 174 states and 266 transitions. Word has length 389 [2025-01-09 04:05:38,725 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-09 04:05:38,725 INFO L471 AbstractCegarLoop]: Abstraction has 174 states and 266 transitions. [2025-01-09 04:05:38,725 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 3.5) internal successors, (56), 16 states have internal predecessors, (56), 7 states have call successors, (13), 2 states have call predecessors, (13), 5 states have return successors, (17), 5 states have call predecessors, (17), 7 states have call successors, (17) [2025-01-09 04:05:38,725 INFO L276 IsEmpty]: Start isEmpty. Operand 174 states and 266 transitions. [2025-01-09 04:05:38,727 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 462 [2025-01-09 04:05:38,728 INFO L210 NwaCegarLoop]: Found error trace [2025-01-09 04:05:38,728 INFO L218 NwaCegarLoop]: trace histogram [38, 38, 29, 29, 28, 27, 19, 19, 19, 19, 19, 19, 19, 14, 14, 14, 14, 14, 14, 14, 14, 10, 8, 2, 1, 1, 1, 1, 1, 1, 1] [2025-01-09 04:05:38,735 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2025-01-09 04:05:38,928 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,10 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 04:05:38,928 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-01-09 04:05:38,929 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 04:05:38,929 INFO L85 PathProgramCache]: Analyzing trace with hash -1299493047, now seen corresponding path program 4 times [2025-01-09 04:05:38,929 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 04:05:38,929 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1623103600] [2025-01-09 04:05:38,929 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-01-09 04:05:38,929 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 04:05:38,939 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 461 statements into 2 equivalence classes. [2025-01-09 04:05:38,960 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 1 check-sat command(s) and asserted 392 of 461 statements. [2025-01-09 04:05:38,960 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 1 check-sat command(s) [2025-01-09 04:05:38,960 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 04:05:39,224 INFO L134 CoverageAnalysis]: Checked inductivity of 6213 backedges. 171 proven. 837 refuted. 0 times theorem prover too weak. 5205 trivial. 0 not checked. [2025-01-09 04:05:39,224 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-09 04:05:39,224 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1623103600] [2025-01-09 04:05:39,224 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1623103600] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-09 04:05:39,224 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2142074801] [2025-01-09 04:05:39,224 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-01-09 04:05:39,224 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 04:05:39,224 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-09 04:05:39,226 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) [2025-01-09 04:05:39,228 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 [2025-01-09 04:05:39,304 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 461 statements into 2 equivalence classes. [2025-01-09 04:05:39,358 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 1 check-sat command(s) and asserted 392 of 461 statements. [2025-01-09 04:05:39,359 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 1 check-sat command(s) [2025-01-09 04:05:39,359 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 04:05:39,361 INFO L256 TraceCheckSpWp]: Trace formula consists of 820 conjuncts, 18 conjuncts are in the unsatisfiable core [2025-01-09 04:05:39,365 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-09 04:05:39,469 INFO L134 CoverageAnalysis]: Checked inductivity of 6213 backedges. 137 proven. 1182 refuted. 0 times theorem prover too weak. 4894 trivial. 0 not checked. [2025-01-09 04:05:39,470 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-01-09 04:05:41,611 INFO L134 CoverageAnalysis]: Checked inductivity of 6213 backedges. 137 proven. 1215 refuted. 0 times theorem prover too weak. 4861 trivial. 0 not checked. [2025-01-09 04:05:41,612 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2142074801] provided 0 perfect and 2 imperfect interpolant sequences [2025-01-09 04:05:41,612 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-01-09 04:05:41,612 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 13, 19] total 27 [2025-01-09 04:05:41,612 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1373520406] [2025-01-09 04:05:41,612 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-01-09 04:05:41,613 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2025-01-09 04:05:41,614 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-09 04:05:41,614 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2025-01-09 04:05:41,614 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=125, Invalid=577, Unknown=0, NotChecked=0, Total=702 [2025-01-09 04:05:41,614 INFO L87 Difference]: Start difference. First operand 174 states and 266 transitions. Second operand has 27 states, 25 states have (on average 3.6) internal successors, (90), 27 states have internal predecessors, (90), 23 states have call successors, (27), 1 states have call predecessors, (27), 14 states have return successors, (38), 15 states have call predecessors, (38), 23 states have call successors, (38) [2025-01-09 04:05:41,893 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-09 04:05:41,893 INFO L93 Difference]: Finished difference Result 215 states and 375 transitions. [2025-01-09 04:05:41,893 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2025-01-09 04:05:41,893 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 25 states have (on average 3.6) internal successors, (90), 27 states have internal predecessors, (90), 23 states have call successors, (27), 1 states have call predecessors, (27), 14 states have return successors, (38), 15 states have call predecessors, (38), 23 states have call successors, (38) Word has length 461 [2025-01-09 04:05:41,894 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-09 04:05:41,896 INFO L225 Difference]: With dead ends: 215 [2025-01-09 04:05:41,896 INFO L226 Difference]: Without dead ends: 211 [2025-01-09 04:05:41,897 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 947 GetRequests, 902 SyntacticMatches, 8 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 480 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=283, Invalid=1199, Unknown=0, NotChecked=0, Total=1482 [2025-01-09 04:05:41,897 INFO L435 NwaCegarLoop]: 20 mSDtfsCounter, 67 mSDsluCounter, 218 mSDsCounter, 0 mSdLazyCounter, 243 mSolverCounterSat, 93 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 84 SdHoareTripleChecker+Valid, 238 SdHoareTripleChecker+Invalid, 336 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 93 IncrementalHoareTripleChecker+Valid, 243 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2025-01-09 04:05:41,897 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [84 Valid, 238 Invalid, 336 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [93 Valid, 243 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2025-01-09 04:05:41,898 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 211 states. [2025-01-09 04:05:41,909 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 211 to 201. [2025-01-09 04:05:41,909 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 201 states, 134 states have (on average 1.1492537313432836) internal successors, (154), 132 states have internal predecessors, (154), 39 states have call successors, (39), 18 states have call predecessors, (39), 27 states have return successors, (150), 50 states have call predecessors, (150), 39 states have call successors, (150) [2025-01-09 04:05:41,911 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 201 states to 201 states and 343 transitions. [2025-01-09 04:05:41,911 INFO L78 Accepts]: Start accepts. Automaton has 201 states and 343 transitions. Word has length 461 [2025-01-09 04:05:41,911 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-09 04:05:41,911 INFO L471 AbstractCegarLoop]: Abstraction has 201 states and 343 transitions. [2025-01-09 04:05:41,912 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 25 states have (on average 3.6) internal successors, (90), 27 states have internal predecessors, (90), 23 states have call successors, (27), 1 states have call predecessors, (27), 14 states have return successors, (38), 15 states have call predecessors, (38), 23 states have call successors, (38) [2025-01-09 04:05:41,912 INFO L276 IsEmpty]: Start isEmpty. Operand 201 states and 343 transitions. [2025-01-09 04:05:41,917 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1060 [2025-01-09 04:05:41,918 INFO L210 NwaCegarLoop]: Found error trace [2025-01-09 04:05:41,918 INFO L218 NwaCegarLoop]: trace histogram [78, 78, 77, 77, 63, 62, 39, 39, 39, 39, 39, 39, 39, 38, 38, 38, 38, 38, 38, 38, 24, 24, 16, 14, 1, 1, 1, 1, 1, 1, 1] [2025-01-09 04:05:41,924 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2025-01-09 04:05:42,118 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2025-01-09 04:05:42,119 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-01-09 04:05:42,119 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 04:05:42,119 INFO L85 PathProgramCache]: Analyzing trace with hash 1215559467, now seen corresponding path program 5 times [2025-01-09 04:05:42,119 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 04:05:42,119 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1126073748] [2025-01-09 04:05:42,119 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2025-01-09 04:05:42,119 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 04:05:42,158 INFO L108 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 partitioned 1059 statements into 71 equivalence classes. [2025-01-09 04:05:42,242 INFO L111 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 31 check-sat command(s) and asserted 441 of 1059 statements. [2025-01-09 04:05:42,242 INFO L114 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 31 check-sat command(s) [2025-01-09 04:05:42,242 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 04:05:42,802 INFO L134 CoverageAnalysis]: Checked inductivity of 33336 backedges. 1603 proven. 2350 refuted. 0 times theorem prover too weak. 29383 trivial. 0 not checked. [2025-01-09 04:05:42,803 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-09 04:05:42,803 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1126073748] [2025-01-09 04:05:42,803 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1126073748] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-09 04:05:42,803 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [817659535] [2025-01-09 04:05:42,803 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2025-01-09 04:05:42,803 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 04:05:42,803 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-09 04:05:42,805 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) [2025-01-09 04:05:42,806 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 [2025-01-09 04:05:42,940 INFO L108 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 partitioned 1059 statements into 71 equivalence classes. [2025-01-09 04:05:43,025 INFO L111 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 31 check-sat command(s) and asserted 441 of 1059 statements. [2025-01-09 04:05:43,026 INFO L114 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 31 check-sat command(s) [2025-01-09 04:05:43,026 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 04:05:43,029 INFO L256 TraceCheckSpWp]: Trace formula consists of 984 conjuncts, 20 conjuncts are in the unsatisfiable core [2025-01-09 04:05:43,042 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-09 04:05:43,114 INFO L134 CoverageAnalysis]: Checked inductivity of 33336 backedges. 18194 proven. 414 refuted. 0 times theorem prover too weak. 14728 trivial. 0 not checked. [2025-01-09 04:05:43,114 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-01-09 04:05:46,338 INFO L134 CoverageAnalysis]: Checked inductivity of 33336 backedges. 1685 proven. 2550 refuted. 0 times theorem prover too weak. 29101 trivial. 0 not checked. [2025-01-09 04:05:46,339 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [817659535] provided 0 perfect and 2 imperfect interpolant sequences [2025-01-09 04:05:46,339 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-01-09 04:05:46,339 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 16, 21] total 28 [2025-01-09 04:05:46,339 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1218381593] [2025-01-09 04:05:46,339 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-01-09 04:05:46,340 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2025-01-09 04:05:46,340 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-09 04:05:46,341 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2025-01-09 04:05:46,341 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=102, Invalid=654, Unknown=0, NotChecked=0, Total=756 [2025-01-09 04:05:46,341 INFO L87 Difference]: Start difference. First operand 201 states and 343 transitions. Second operand has 28 states, 28 states have (on average 3.8214285714285716) internal successors, (107), 28 states have internal predecessors, (107), 21 states have call successors, (32), 2 states have call predecessors, (32), 11 states have return successors, (38), 13 states have call predecessors, (38), 21 states have call successors, (38) [2025-01-09 04:05:46,879 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-09 04:05:46,879 INFO L93 Difference]: Finished difference Result 464 states and 872 transitions. [2025-01-09 04:05:46,880 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2025-01-09 04:05:46,880 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 28 states have (on average 3.8214285714285716) internal successors, (107), 28 states have internal predecessors, (107), 21 states have call successors, (32), 2 states have call predecessors, (32), 11 states have return successors, (38), 13 states have call predecessors, (38), 21 states have call successors, (38) Word has length 1059 [2025-01-09 04:05:46,881 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-09 04:05:46,883 INFO L225 Difference]: With dead ends: 464 [2025-01-09 04:05:46,883 INFO L226 Difference]: Without dead ends: 255 [2025-01-09 04:05:46,887 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 2157 GetRequests, 2101 SyntacticMatches, 10 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 499 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=382, Invalid=1874, Unknown=0, NotChecked=0, Total=2256 [2025-01-09 04:05:46,888 INFO L435 NwaCegarLoop]: 46 mSDtfsCounter, 57 mSDsluCounter, 423 mSDsCounter, 0 mSdLazyCounter, 858 mSolverCounterSat, 67 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 57 SdHoareTripleChecker+Valid, 469 SdHoareTripleChecker+Invalid, 925 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 67 IncrementalHoareTripleChecker+Valid, 858 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2025-01-09 04:05:46,888 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [57 Valid, 469 Invalid, 925 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [67 Valid, 858 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2025-01-09 04:05:46,888 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 255 states. [2025-01-09 04:05:46,900 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 255 to 217. [2025-01-09 04:05:46,901 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 217 states, 147 states have (on average 1.1088435374149659) internal successors, (163), 144 states have internal predecessors, (163), 42 states have call successors, (42), 23 states have call predecessors, (42), 27 states have return successors, (140), 49 states have call predecessors, (140), 42 states have call successors, (140) [2025-01-09 04:05:46,902 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 217 states to 217 states and 345 transitions. [2025-01-09 04:05:46,903 INFO L78 Accepts]: Start accepts. Automaton has 217 states and 345 transitions. Word has length 1059 [2025-01-09 04:05:46,903 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-09 04:05:46,903 INFO L471 AbstractCegarLoop]: Abstraction has 217 states and 345 transitions. [2025-01-09 04:05:46,904 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 28 states have (on average 3.8214285714285716) internal successors, (107), 28 states have internal predecessors, (107), 21 states have call successors, (32), 2 states have call predecessors, (32), 11 states have return successors, (38), 13 states have call predecessors, (38), 21 states have call successors, (38) [2025-01-09 04:05:46,904 INFO L276 IsEmpty]: Start isEmpty. Operand 217 states and 345 transitions. [2025-01-09 04:05:46,908 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 829 [2025-01-09 04:05:46,908 INFO L210 NwaCegarLoop]: Found error trace [2025-01-09 04:05:46,908 INFO L218 NwaCegarLoop]: trace histogram [62, 62, 59, 59, 49, 49, 31, 31, 31, 31, 31, 31, 31, 29, 29, 29, 29, 29, 29, 29, 20, 18, 13, 10, 1, 1, 1, 1, 1, 1, 1] [2025-01-09 04:05:46,916 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 [2025-01-09 04:05:47,113 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2025-01-09 04:05:47,113 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-01-09 04:05:47,113 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 04:05:47,113 INFO L85 PathProgramCache]: Analyzing trace with hash -26849862, now seen corresponding path program 6 times [2025-01-09 04:05:47,114 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 04:05:47,114 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [983134612] [2025-01-09 04:05:47,114 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2025-01-09 04:05:47,114 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 04:05:47,146 INFO L108 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE partitioned 828 statements into 50 equivalence classes. [2025-01-09 04:05:47,166 INFO L111 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 11 check-sat command(s) and asserted 180 of 828 statements. [2025-01-09 04:05:47,166 INFO L114 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 11 check-sat command(s) [2025-01-09 04:05:47,166 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 04:05:47,268 INFO L134 CoverageAnalysis]: Checked inductivity of 20244 backedges. 1679 proven. 94 refuted. 0 times theorem prover too weak. 18471 trivial. 0 not checked. [2025-01-09 04:05:47,268 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-09 04:05:47,268 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [983134612] [2025-01-09 04:05:47,268 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [983134612] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-09 04:05:47,268 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1664213176] [2025-01-09 04:05:47,268 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2025-01-09 04:05:47,268 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 04:05:47,268 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-09 04:05:47,270 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) [2025-01-09 04:05:47,272 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 [2025-01-09 04:05:47,406 INFO L108 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE partitioned 828 statements into 50 equivalence classes. [2025-01-09 04:05:47,440 INFO L111 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 11 check-sat command(s) and asserted 180 of 828 statements. [2025-01-09 04:05:47,440 INFO L114 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 11 check-sat command(s) [2025-01-09 04:05:47,440 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 04:05:47,442 INFO L256 TraceCheckSpWp]: Trace formula consists of 420 conjuncts, 10 conjuncts are in the unsatisfiable core [2025-01-09 04:05:47,448 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-09 04:05:47,515 INFO L134 CoverageAnalysis]: Checked inductivity of 20244 backedges. 4220 proven. 19 refuted. 0 times theorem prover too weak. 16005 trivial. 0 not checked. [2025-01-09 04:05:47,515 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-01-09 04:05:49,151 INFO L134 CoverageAnalysis]: Checked inductivity of 20244 backedges. 1873 proven. 121 refuted. 0 times theorem prover too weak. 18250 trivial. 0 not checked. [2025-01-09 04:05:49,152 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1664213176] provided 0 perfect and 2 imperfect interpolant sequences [2025-01-09 04:05:49,152 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-01-09 04:05:49,152 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 11] total 18 [2025-01-09 04:05:49,152 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [912630642] [2025-01-09 04:05:49,152 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-01-09 04:05:49,153 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2025-01-09 04:05:49,153 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-09 04:05:49,153 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2025-01-09 04:05:49,153 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=249, Unknown=0, NotChecked=0, Total=306 [2025-01-09 04:05:49,153 INFO L87 Difference]: Start difference. First operand 217 states and 345 transitions. Second operand has 18 states, 18 states have (on average 4.166666666666667) internal successors, (75), 18 states have internal predecessors, (75), 11 states have call successors, (21), 2 states have call predecessors, (21), 6 states have return successors, (26), 6 states have call predecessors, (26), 11 states have call successors, (26) [2025-01-09 04:05:49,273 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-09 04:05:49,273 INFO L93 Difference]: Finished difference Result 418 states and 743 transitions. [2025-01-09 04:05:49,274 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2025-01-09 04:05:49,274 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 4.166666666666667) internal successors, (75), 18 states have internal predecessors, (75), 11 states have call successors, (21), 2 states have call predecessors, (21), 6 states have return successors, (26), 6 states have call predecessors, (26), 11 states have call successors, (26) Word has length 828 [2025-01-09 04:05:49,275 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-09 04:05:49,277 INFO L225 Difference]: With dead ends: 418 [2025-01-09 04:05:49,277 INFO L226 Difference]: Without dead ends: 187 [2025-01-09 04:05:49,278 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 1670 GetRequests, 1644 SyntacticMatches, 5 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 117 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=100, Invalid=406, Unknown=0, NotChecked=0, Total=506 [2025-01-09 04:05:49,278 INFO L435 NwaCegarLoop]: 30 mSDtfsCounter, 21 mSDsluCounter, 220 mSDsCounter, 0 mSdLazyCounter, 214 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 22 SdHoareTripleChecker+Valid, 250 SdHoareTripleChecker+Invalid, 238 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 214 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-01-09 04:05:49,279 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [22 Valid, 250 Invalid, 238 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 214 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-01-09 04:05:49,279 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 187 states. [2025-01-09 04:05:49,288 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 187 to 187. [2025-01-09 04:05:49,289 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 187 states, 129 states have (on average 1.0930232558139534) internal successors, (141), 126 states have internal predecessors, (141), 34 states have call successors, (34), 22 states have call predecessors, (34), 23 states have return successors, (119), 38 states have call predecessors, (119), 34 states have call successors, (119) [2025-01-09 04:05:49,290 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 187 states to 187 states and 294 transitions. [2025-01-09 04:05:49,290 INFO L78 Accepts]: Start accepts. Automaton has 187 states and 294 transitions. Word has length 828 [2025-01-09 04:05:49,291 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-09 04:05:49,291 INFO L471 AbstractCegarLoop]: Abstraction has 187 states and 294 transitions. [2025-01-09 04:05:49,291 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 4.166666666666667) internal successors, (75), 18 states have internal predecessors, (75), 11 states have call successors, (21), 2 states have call predecessors, (21), 6 states have return successors, (26), 6 states have call predecessors, (26), 11 states have call successors, (26) [2025-01-09 04:05:49,291 INFO L276 IsEmpty]: Start isEmpty. Operand 187 states and 294 transitions. [2025-01-09 04:05:49,298 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1280 [2025-01-09 04:05:49,299 INFO L210 NwaCegarLoop]: Found error trace [2025-01-09 04:05:49,299 INFO L218 NwaCegarLoop]: trace histogram [104, 104, 83, 83, 78, 75, 52, 52, 52, 52, 52, 52, 52, 41, 41, 41, 41, 41, 41, 41, 34, 29, 26, 5, 1, 1, 1, 1, 1, 1, 1] [2025-01-09 04:05:49,306 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2025-01-09 04:05:49,499 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13,13 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 04:05:49,500 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-01-09 04:05:49,500 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 04:05:49,500 INFO L85 PathProgramCache]: Analyzing trace with hash 201661375, now seen corresponding path program 7 times [2025-01-09 04:05:49,500 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 04:05:49,500 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [593084018] [2025-01-09 04:05:49,500 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2025-01-09 04:05:49,500 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 04:05:49,518 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 1279 statements into 1 equivalence classes. [2025-01-09 04:05:49,665 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 1279 of 1279 statements. [2025-01-09 04:05:49,665 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 04:05:49,665 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 04:05:50,799 INFO L134 CoverageAnalysis]: Checked inductivity of 49398 backedges. 503 proven. 3944 refuted. 0 times theorem prover too weak. 44951 trivial. 0 not checked. [2025-01-09 04:05:50,800 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-09 04:05:50,800 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [593084018] [2025-01-09 04:05:50,800 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [593084018] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-09 04:05:50,800 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1801885535] [2025-01-09 04:05:50,800 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2025-01-09 04:05:50,800 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 04:05:50,800 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-09 04:05:50,802 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) [2025-01-09 04:05:50,804 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 [2025-01-09 04:05:50,969 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 1279 statements into 1 equivalence classes. [2025-01-09 04:05:51,154 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 1279 of 1279 statements. [2025-01-09 04:05:51,154 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 04:05:51,154 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 04:05:51,162 INFO L256 TraceCheckSpWp]: Trace formula consists of 2858 conjuncts, 20 conjuncts are in the unsatisfiable core [2025-01-09 04:05:51,175 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-09 04:05:51,255 INFO L134 CoverageAnalysis]: Checked inductivity of 49398 backedges. 503 proven. 3944 refuted. 0 times theorem prover too weak. 44951 trivial. 0 not checked. [2025-01-09 04:05:51,255 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-01-09 04:05:55,392 INFO L134 CoverageAnalysis]: Checked inductivity of 49398 backedges. 503 proven. 3988 refuted. 0 times theorem prover too weak. 44907 trivial. 0 not checked. [2025-01-09 04:05:55,392 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1801885535] provided 0 perfect and 2 imperfect interpolant sequences [2025-01-09 04:05:55,392 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-01-09 04:05:55,392 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14, 21] total 23 [2025-01-09 04:05:55,393 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1073642461] [2025-01-09 04:05:55,393 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-01-09 04:05:55,394 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2025-01-09 04:05:55,394 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-09 04:05:55,394 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2025-01-09 04:05:55,394 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=93, Invalid=413, Unknown=0, NotChecked=0, Total=506 [2025-01-09 04:05:55,394 INFO L87 Difference]: Start difference. First operand 187 states and 294 transitions. Second operand has 23 states, 22 states have (on average 3.6363636363636362) internal successors, (80), 23 states have internal predecessors, (80), 20 states have call successors, (23), 1 states have call predecessors, (23), 10 states have return successors, (29), 10 states have call predecessors, (29), 20 states have call successors, (29) [2025-01-09 04:05:55,569 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-09 04:05:55,569 INFO L93 Difference]: Finished difference Result 217 states and 383 transitions. [2025-01-09 04:05:55,569 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2025-01-09 04:05:55,570 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 22 states have (on average 3.6363636363636362) internal successors, (80), 23 states have internal predecessors, (80), 20 states have call successors, (23), 1 states have call predecessors, (23), 10 states have return successors, (29), 10 states have call predecessors, (29), 20 states have call successors, (29) Word has length 1279 [2025-01-09 04:05:55,571 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-09 04:05:55,573 INFO L225 Difference]: With dead ends: 217 [2025-01-09 04:05:55,574 INFO L226 Difference]: Without dead ends: 213 [2025-01-09 04:05:55,575 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 2585 GetRequests, 2546 SyntacticMatches, 10 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 212 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=185, Invalid=745, Unknown=0, NotChecked=0, Total=930 [2025-01-09 04:05:55,576 INFO L435 NwaCegarLoop]: 20 mSDtfsCounter, 54 mSDsluCounter, 194 mSDsCounter, 0 mSdLazyCounter, 217 mSolverCounterSat, 61 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 69 SdHoareTripleChecker+Valid, 214 SdHoareTripleChecker+Invalid, 278 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 61 IncrementalHoareTripleChecker+Valid, 217 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-01-09 04:05:55,576 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [69 Valid, 214 Invalid, 278 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [61 Valid, 217 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-01-09 04:05:55,576 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 213 states. [2025-01-09 04:05:55,587 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 213 to 187. [2025-01-09 04:05:55,588 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 187 states, 129 states have (on average 1.0930232558139534) internal successors, (141), 126 states have internal predecessors, (141), 34 states have call successors, (34), 22 states have call predecessors, (34), 23 states have return successors, (119), 38 states have call predecessors, (119), 34 states have call successors, (119) [2025-01-09 04:05:55,589 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 187 states to 187 states and 294 transitions. [2025-01-09 04:05:55,589 INFO L78 Accepts]: Start accepts. Automaton has 187 states and 294 transitions. Word has length 1279 [2025-01-09 04:05:55,590 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-09 04:05:55,590 INFO L471 AbstractCegarLoop]: Abstraction has 187 states and 294 transitions. [2025-01-09 04:05:55,590 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 22 states have (on average 3.6363636363636362) internal successors, (80), 23 states have internal predecessors, (80), 20 states have call successors, (23), 1 states have call predecessors, (23), 10 states have return successors, (29), 10 states have call predecessors, (29), 20 states have call successors, (29) [2025-01-09 04:05:55,590 INFO L276 IsEmpty]: Start isEmpty. Operand 187 states and 294 transitions. [2025-01-09 04:05:55,598 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1387 [2025-01-09 04:05:55,598 INFO L210 NwaCegarLoop]: Found error trace [2025-01-09 04:05:55,599 INFO L218 NwaCegarLoop]: trace histogram [104, 104, 99, 99, 82, 82, 52, 52, 52, 52, 52, 52, 52, 49, 49, 49, 49, 49, 49, 49, 33, 30, 22, 17, 1, 1, 1, 1, 1, 1, 1] [2025-01-09 04:05:55,610 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Ended with exit code 0 [2025-01-09 04:05:55,799 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14,14 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 04:05:55,799 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-01-09 04:05:55,800 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 04:05:55,800 INFO L85 PathProgramCache]: Analyzing trace with hash 826324955, now seen corresponding path program 8 times [2025-01-09 04:05:55,800 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 04:05:55,800 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1906242842] [2025-01-09 04:05:55,800 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-01-09 04:05:55,800 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 04:05:55,820 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 1386 statements into 2 equivalence classes. [2025-01-09 04:05:55,953 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 1386 of 1386 statements. [2025-01-09 04:05:55,953 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-01-09 04:05:55,954 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 04:05:56,845 INFO L134 CoverageAnalysis]: Checked inductivity of 57478 backedges. 2781 proven. 452 refuted. 0 times theorem prover too weak. 54245 trivial. 0 not checked. [2025-01-09 04:05:56,845 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-09 04:05:56,845 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1906242842] [2025-01-09 04:05:56,845 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1906242842] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-09 04:05:56,845 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1443147163] [2025-01-09 04:05:56,845 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-01-09 04:05:56,845 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 04:05:56,845 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-09 04:05:56,847 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-01-09 04:05:56,849 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2025-01-09 04:05:57,042 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 1386 statements into 2 equivalence classes. [2025-01-09 04:05:57,232 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 1386 of 1386 statements. [2025-01-09 04:05:57,232 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-01-09 04:05:57,232 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 04:05:57,240 INFO L256 TraceCheckSpWp]: Trace formula consists of 3096 conjuncts, 20 conjuncts are in the unsatisfiable core [2025-01-09 04:05:57,250 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-09 04:05:57,423 INFO L134 CoverageAnalysis]: Checked inductivity of 57478 backedges. 2318 proven. 2549 refuted. 0 times theorem prover too weak. 52611 trivial. 0 not checked. [2025-01-09 04:05:57,423 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-01-09 04:06:01,730 INFO L134 CoverageAnalysis]: Checked inductivity of 57478 backedges. 2320 proven. 2587 refuted. 0 times theorem prover too weak. 52571 trivial. 0 not checked. [2025-01-09 04:06:01,730 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1443147163] provided 0 perfect and 2 imperfect interpolant sequences [2025-01-09 04:06:01,730 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-01-09 04:06:01,730 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 14, 21] total 32 [2025-01-09 04:06:01,730 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1523076470] [2025-01-09 04:06:01,731 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-01-09 04:06:01,732 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2025-01-09 04:06:01,732 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-09 04:06:01,732 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2025-01-09 04:06:01,732 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=117, Invalid=875, Unknown=0, NotChecked=0, Total=992 [2025-01-09 04:06:01,733 INFO L87 Difference]: Start difference. First operand 187 states and 294 transitions. Second operand has 32 states, 30 states have (on average 3.5) internal successors, (105), 32 states have internal predecessors, (105), 23 states have call successors, (32), 1 states have call predecessors, (32), 16 states have return successors, (41), 21 states have call predecessors, (41), 23 states have call successors, (41) [2025-01-09 04:06:02,717 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-09 04:06:02,717 INFO L93 Difference]: Finished difference Result 570 states and 1267 transitions. [2025-01-09 04:06:02,717 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2025-01-09 04:06:02,718 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 30 states have (on average 3.5) internal successors, (105), 32 states have internal predecessors, (105), 23 states have call successors, (32), 1 states have call predecessors, (32), 16 states have return successors, (41), 21 states have call predecessors, (41), 23 states have call successors, (41) Word has length 1386 [2025-01-09 04:06:02,719 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-09 04:06:02,723 INFO L225 Difference]: With dead ends: 570 [2025-01-09 04:06:02,723 INFO L226 Difference]: Without dead ends: 319 [2025-01-09 04:06:02,726 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 2821 GetRequests, 2745 SyntacticMatches, 10 SemanticMatches, 66 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1122 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=620, Invalid=3936, Unknown=0, NotChecked=0, Total=4556 [2025-01-09 04:06:02,726 INFO L435 NwaCegarLoop]: 55 mSDtfsCounter, 96 mSDsluCounter, 761 mSDsCounter, 0 mSdLazyCounter, 1734 mSolverCounterSat, 101 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 96 SdHoareTripleChecker+Valid, 816 SdHoareTripleChecker+Invalid, 1835 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 101 IncrementalHoareTripleChecker+Valid, 1734 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2025-01-09 04:06:02,727 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [96 Valid, 816 Invalid, 1835 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [101 Valid, 1734 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2025-01-09 04:06:02,727 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 319 states. [2025-01-09 04:06:02,743 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 319 to 268. [2025-01-09 04:06:02,744 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 268 states, 186 states have (on average 1.0806451612903225) internal successors, (201), 184 states have internal predecessors, (201), 54 states have call successors, (54), 37 states have call predecessors, (54), 27 states have return successors, (209), 46 states have call predecessors, (209), 54 states have call successors, (209) [2025-01-09 04:06:02,745 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 268 states to 268 states and 464 transitions. [2025-01-09 04:06:02,746 INFO L78 Accepts]: Start accepts. Automaton has 268 states and 464 transitions. Word has length 1386 [2025-01-09 04:06:02,747 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-09 04:06:02,747 INFO L471 AbstractCegarLoop]: Abstraction has 268 states and 464 transitions. [2025-01-09 04:06:02,747 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 30 states have (on average 3.5) internal successors, (105), 32 states have internal predecessors, (105), 23 states have call successors, (32), 1 states have call predecessors, (32), 16 states have return successors, (41), 21 states have call predecessors, (41), 23 states have call successors, (41) [2025-01-09 04:06:02,747 INFO L276 IsEmpty]: Start isEmpty. Operand 268 states and 464 transitions. [2025-01-09 04:06:02,787 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1686 [2025-01-09 04:06:02,788 INFO L210 NwaCegarLoop]: Found error trace [2025-01-09 04:06:02,788 INFO L218 NwaCegarLoop]: trace histogram [126, 126, 121, 121, 102, 97, 63, 63, 63, 63, 63, 63, 63, 60, 60, 60, 60, 60, 60, 60, 39, 37, 29, 19, 1, 1, 1, 1, 1, 1, 1] [2025-01-09 04:06:02,797 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Ended with exit code 0 [2025-01-09 04:06:02,988 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2025-01-09 04:06:02,989 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-01-09 04:06:02,990 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 04:06:02,990 INFO L85 PathProgramCache]: Analyzing trace with hash 1113427599, now seen corresponding path program 9 times [2025-01-09 04:06:02,990 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 04:06:02,990 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2129460092] [2025-01-09 04:06:02,990 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-01-09 04:06:02,990 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 04:06:03,014 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 1685 statements into 104 equivalence classes. [2025-01-09 04:06:03,019 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s) and asserted 98 of 1685 statements. [2025-01-09 04:06:03,019 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s) [2025-01-09 04:06:03,019 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 04:06:03,169 INFO L134 CoverageAnalysis]: Checked inductivity of 85239 backedges. 3862 proven. 26 refuted. 0 times theorem prover too weak. 81351 trivial. 0 not checked. [2025-01-09 04:06:03,170 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-09 04:06:03,170 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2129460092] [2025-01-09 04:06:03,170 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2129460092] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-09 04:06:03,170 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [538438793] [2025-01-09 04:06:03,170 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-01-09 04:06:03,170 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 04:06:03,170 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-09 04:06:03,172 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-01-09 04:06:03,173 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2025-01-09 04:06:03,388 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 1685 statements into 104 equivalence classes. [2025-01-09 04:06:03,407 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s) and asserted 98 of 1685 statements. [2025-01-09 04:06:03,407 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s) [2025-01-09 04:06:03,407 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 04:06:03,409 INFO L256 TraceCheckSpWp]: Trace formula consists of 236 conjuncts, 12 conjuncts are in the unsatisfiable core [2025-01-09 04:06:03,419 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-09 04:06:03,507 INFO L134 CoverageAnalysis]: Checked inductivity of 85239 backedges. 4302 proven. 33 refuted. 0 times theorem prover too weak. 80904 trivial. 0 not checked. [2025-01-09 04:06:03,508 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-01-09 04:06:06,949 INFO L134 CoverageAnalysis]: Checked inductivity of 85239 backedges. 4302 proven. 35 refuted. 0 times theorem prover too weak. 80902 trivial. 0 not checked. [2025-01-09 04:06:06,949 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [538438793] provided 0 perfect and 2 imperfect interpolant sequences [2025-01-09 04:06:06,949 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-01-09 04:06:06,950 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 12, 13] total 24 [2025-01-09 04:06:06,950 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [387838484] [2025-01-09 04:06:06,950 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-01-09 04:06:06,951 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2025-01-09 04:06:06,951 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-09 04:06:06,951 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2025-01-09 04:06:06,952 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=82, Invalid=470, Unknown=0, NotChecked=0, Total=552 [2025-01-09 04:06:06,952 INFO L87 Difference]: Start difference. First operand 268 states and 464 transitions. Second operand has 24 states, 23 states have (on average 3.217391304347826) internal successors, (74), 24 states have internal predecessors, (74), 13 states have call successors, (20), 1 states have call predecessors, (20), 7 states have return successors, (23), 10 states have call predecessors, (23), 13 states have call successors, (23) [2025-01-09 04:06:07,159 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-09 04:06:07,159 INFO L93 Difference]: Finished difference Result 518 states and 975 transitions. [2025-01-09 04:06:07,159 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2025-01-09 04:06:07,160 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 23 states have (on average 3.217391304347826) internal successors, (74), 24 states have internal predecessors, (74), 13 states have call successors, (20), 1 states have call predecessors, (20), 7 states have return successors, (23), 10 states have call predecessors, (23), 13 states have call successors, (23) Word has length 1685 [2025-01-09 04:06:07,160 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-09 04:06:07,163 INFO L225 Difference]: With dead ends: 518 [2025-01-09 04:06:07,163 INFO L226 Difference]: Without dead ends: 265 [2025-01-09 04:06:07,165 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 3395 GetRequests, 3356 SyntacticMatches, 6 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 247 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=202, Invalid=988, Unknown=0, NotChecked=0, Total=1190 [2025-01-09 04:06:07,165 INFO L435 NwaCegarLoop]: 28 mSDtfsCounter, 68 mSDsluCounter, 173 mSDsCounter, 0 mSdLazyCounter, 271 mSolverCounterSat, 73 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 69 SdHoareTripleChecker+Valid, 201 SdHoareTripleChecker+Invalid, 344 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 73 IncrementalHoareTripleChecker+Valid, 271 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-01-09 04:06:07,165 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [69 Valid, 201 Invalid, 344 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [73 Valid, 271 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-01-09 04:06:07,167 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 265 states. [2025-01-09 04:06:07,180 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 265 to 260. [2025-01-09 04:06:07,180 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 260 states, 181 states have (on average 1.0828729281767955) internal successors, (196), 179 states have internal predecessors, (196), 53 states have call successors, (53), 37 states have call predecessors, (53), 25 states have return successors, (188), 43 states have call predecessors, (188), 53 states have call successors, (188) [2025-01-09 04:06:07,182 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 260 states to 260 states and 437 transitions. [2025-01-09 04:06:07,182 INFO L78 Accepts]: Start accepts. Automaton has 260 states and 437 transitions. Word has length 1685 [2025-01-09 04:06:07,182 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-09 04:06:07,182 INFO L471 AbstractCegarLoop]: Abstraction has 260 states and 437 transitions. [2025-01-09 04:06:07,183 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 23 states have (on average 3.217391304347826) internal successors, (74), 24 states have internal predecessors, (74), 13 states have call successors, (20), 1 states have call predecessors, (20), 7 states have return successors, (23), 10 states have call predecessors, (23), 13 states have call successors, (23) [2025-01-09 04:06:07,183 INFO L276 IsEmpty]: Start isEmpty. Operand 260 states and 437 transitions. [2025-01-09 04:06:07,196 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1672 [2025-01-09 04:06:07,196 INFO L210 NwaCegarLoop]: Found error trace [2025-01-09 04:06:07,197 INFO L218 NwaCegarLoop]: trace histogram [123, 123, 122, 122, 102, 95, 61, 61, 61, 61, 61, 61, 61, 61, 61, 61, 61, 61, 61, 61, 41, 34, 27, 21, 1, 1, 1, 1, 1, 1, 1] [2025-01-09 04:06:07,204 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Ended with exit code 0 [2025-01-09 04:06:07,397 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2025-01-09 04:06:07,398 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-01-09 04:06:07,398 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 04:06:07,398 INFO L85 PathProgramCache]: Analyzing trace with hash 181253234, now seen corresponding path program 10 times [2025-01-09 04:06:07,398 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 04:06:07,398 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [209090256] [2025-01-09 04:06:07,398 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-01-09 04:06:07,398 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 04:06:07,422 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 1671 statements into 2 equivalence classes. [2025-01-09 04:06:07,585 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 1 check-sat command(s) and asserted 1424 of 1671 statements. [2025-01-09 04:06:07,585 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 1 check-sat command(s) [2025-01-09 04:06:07,585 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 04:06:08,695 INFO L134 CoverageAnalysis]: Checked inductivity of 83792 backedges. 1023 proven. 4236 refuted. 0 times theorem prover too weak. 78533 trivial. 0 not checked. [2025-01-09 04:06:08,695 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-09 04:06:08,695 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [209090256] [2025-01-09 04:06:08,696 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [209090256] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-09 04:06:08,696 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [704336364] [2025-01-09 04:06:08,696 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-01-09 04:06:08,696 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 04:06:08,696 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-09 04:06:08,697 INFO L229 MonitoredProcess]: Starting monitored process 17 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-01-09 04:06:08,698 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2025-01-09 04:06:08,911 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 1671 statements into 2 equivalence classes. [2025-01-09 04:06:09,095 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 1 check-sat command(s) and asserted 1424 of 1671 statements. [2025-01-09 04:06:09,095 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 1 check-sat command(s) [2025-01-09 04:06:09,095 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 04:06:09,104 INFO L256 TraceCheckSpWp]: Trace formula consists of 2973 conjuncts, 22 conjuncts are in the unsatisfiable core [2025-01-09 04:06:09,116 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-09 04:06:09,342 INFO L134 CoverageAnalysis]: Checked inductivity of 83792 backedges. 1053 proven. 5531 refuted. 0 times theorem prover too weak. 77208 trivial. 0 not checked. [2025-01-09 04:06:09,342 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-01-09 04:06:14,940 INFO L134 CoverageAnalysis]: Checked inductivity of 83792 backedges. 1057 proven. 5579 refuted. 0 times theorem prover too weak. 77156 trivial. 0 not checked. [2025-01-09 04:06:14,940 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [704336364] provided 0 perfect and 2 imperfect interpolant sequences [2025-01-09 04:06:14,940 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-01-09 04:06:14,941 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 15, 23] total 36 [2025-01-09 04:06:14,941 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1624504701] [2025-01-09 04:06:14,941 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-01-09 04:06:14,942 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 36 states [2025-01-09 04:06:14,942 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-09 04:06:14,942 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2025-01-09 04:06:14,943 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=141, Invalid=1119, Unknown=0, NotChecked=0, Total=1260 [2025-01-09 04:06:14,943 INFO L87 Difference]: Start difference. First operand 260 states and 437 transitions. Second operand has 36 states, 34 states have (on average 3.4411764705882355) internal successors, (117), 36 states have internal predecessors, (117), 30 states have call successors, (36), 1 states have call predecessors, (36), 19 states have return successors, (48), 21 states have call predecessors, (48), 30 states have call successors, (48) [2025-01-09 04:06:16,058 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-09 04:06:16,059 INFO L93 Difference]: Finished difference Result 798 states and 2145 transitions. [2025-01-09 04:06:16,059 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 62 states. [2025-01-09 04:06:16,059 INFO L78 Accepts]: Start accepts. Automaton has has 36 states, 34 states have (on average 3.4411764705882355) internal successors, (117), 36 states have internal predecessors, (117), 30 states have call successors, (36), 1 states have call predecessors, (36), 19 states have return successors, (48), 21 states have call predecessors, (48), 30 states have call successors, (48) Word has length 1671 [2025-01-09 04:06:16,060 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-09 04:06:16,064 INFO L225 Difference]: With dead ends: 798 [2025-01-09 04:06:16,065 INFO L226 Difference]: Without dead ends: 389 [2025-01-09 04:06:16,071 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 3405 GetRequests, 3314 SyntacticMatches, 11 SemanticMatches, 80 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1766 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=844, Invalid=5798, Unknown=0, NotChecked=0, Total=6642 [2025-01-09 04:06:16,072 INFO L435 NwaCegarLoop]: 55 mSDtfsCounter, 152 mSDsluCounter, 810 mSDsCounter, 0 mSdLazyCounter, 1504 mSolverCounterSat, 169 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 152 SdHoareTripleChecker+Valid, 865 SdHoareTripleChecker+Invalid, 1673 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 169 IncrementalHoareTripleChecker+Valid, 1504 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2025-01-09 04:06:16,072 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [152 Valid, 865 Invalid, 1673 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [169 Valid, 1504 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2025-01-09 04:06:16,073 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 389 states. [2025-01-09 04:06:16,092 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 389 to 295. [2025-01-09 04:06:16,092 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 295 states, 207 states have (on average 1.0531400966183575) internal successors, (218), 203 states have internal predecessors, (218), 61 states have call successors, (61), 44 states have call predecessors, (61), 26 states have return successors, (149), 47 states have call predecessors, (149), 61 states have call successors, (149) [2025-01-09 04:06:16,094 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 295 states to 295 states and 428 transitions. [2025-01-09 04:06:16,095 INFO L78 Accepts]: Start accepts. Automaton has 295 states and 428 transitions. Word has length 1671 [2025-01-09 04:06:16,095 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-09 04:06:16,095 INFO L471 AbstractCegarLoop]: Abstraction has 295 states and 428 transitions. [2025-01-09 04:06:16,095 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 36 states, 34 states have (on average 3.4411764705882355) internal successors, (117), 36 states have internal predecessors, (117), 30 states have call successors, (36), 1 states have call predecessors, (36), 19 states have return successors, (48), 21 states have call predecessors, (48), 30 states have call successors, (48) [2025-01-09 04:06:16,095 INFO L276 IsEmpty]: Start isEmpty. Operand 295 states and 428 transitions. [2025-01-09 04:06:16,105 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1523 [2025-01-09 04:06:16,105 INFO L210 NwaCegarLoop]: Found error trace [2025-01-09 04:06:16,106 INFO L218 NwaCegarLoop]: trace histogram [115, 115, 108, 108, 91, 89, 57, 57, 57, 57, 57, 57, 57, 54, 54, 54, 54, 54, 54, 54, 35, 34, 26, 17, 1, 1, 1, 1, 1, 1, 1] [2025-01-09 04:06:16,115 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Forceful destruction successful, exit code 0 [2025-01-09 04:06:16,310 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2025-01-09 04:06:16,310 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-01-09 04:06:16,310 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 04:06:16,311 INFO L85 PathProgramCache]: Analyzing trace with hash -1585967695, now seen corresponding path program 11 times [2025-01-09 04:06:16,311 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 04:06:16,311 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2037960146] [2025-01-09 04:06:16,311 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2025-01-09 04:06:16,311 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 04:06:16,333 INFO L108 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 partitioned 1522 statements into 93 equivalence classes. [2025-01-09 04:06:16,378 INFO L111 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 31 check-sat command(s) and asserted 491 of 1522 statements. [2025-01-09 04:06:16,378 INFO L114 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 31 check-sat command(s) [2025-01-09 04:06:16,378 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 04:06:16,896 INFO L134 CoverageAnalysis]: Checked inductivity of 69451 backedges. 2845 proven. 5085 refuted. 0 times theorem prover too weak. 61521 trivial. 0 not checked. [2025-01-09 04:06:16,896 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-09 04:06:16,896 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2037960146] [2025-01-09 04:06:16,896 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2037960146] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-09 04:06:16,896 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [335629895] [2025-01-09 04:06:16,896 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2025-01-09 04:06:16,896 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 04:06:16,896 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-09 04:06:16,898 INFO L229 MonitoredProcess]: Starting monitored process 18 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-01-09 04:06:16,900 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2025-01-09 04:06:17,143 INFO L108 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 partitioned 1522 statements into 93 equivalence classes. [2025-01-09 04:06:17,232 INFO L111 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 31 check-sat command(s) and asserted 491 of 1522 statements. [2025-01-09 04:06:17,232 INFO L114 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 31 check-sat command(s) [2025-01-09 04:06:17,232 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 04:06:17,236 INFO L256 TraceCheckSpWp]: Trace formula consists of 1091 conjuncts, 25 conjuncts are in the unsatisfiable core [2025-01-09 04:06:17,245 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-09 04:06:17,371 INFO L134 CoverageAnalysis]: Checked inductivity of 69451 backedges. 36931 proven. 889 refuted. 0 times theorem prover too weak. 31631 trivial. 0 not checked. [2025-01-09 04:06:17,371 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-01-09 04:06:22,596 INFO L134 CoverageAnalysis]: Checked inductivity of 69451 backedges. 2831 proven. 5114 refuted. 0 times theorem prover too weak. 61506 trivial. 0 not checked. [2025-01-09 04:06:22,597 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [335629895] provided 0 perfect and 2 imperfect interpolant sequences [2025-01-09 04:06:22,597 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-01-09 04:06:22,597 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 19, 26] total 36 [2025-01-09 04:06:22,597 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [605541048] [2025-01-09 04:06:22,597 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-01-09 04:06:22,598 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 36 states [2025-01-09 04:06:22,598 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-09 04:06:22,599 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2025-01-09 04:06:22,599 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=156, Invalid=1104, Unknown=0, NotChecked=0, Total=1260 [2025-01-09 04:06:22,599 INFO L87 Difference]: Start difference. First operand 295 states and 428 transitions. Second operand has 36 states, 35 states have (on average 3.6) internal successors, (126), 36 states have internal predecessors, (126), 28 states have call successors, (38), 2 states have call predecessors, (38), 13 states have return successors, (47), 13 states have call predecessors, (47), 28 states have call successors, (47) [2025-01-09 04:06:23,219 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-09 04:06:23,219 INFO L93 Difference]: Finished difference Result 596 states and 930 transitions. [2025-01-09 04:06:23,219 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2025-01-09 04:06:23,220 INFO L78 Accepts]: Start accepts. Automaton has has 36 states, 35 states have (on average 3.6) internal successors, (126), 36 states have internal predecessors, (126), 28 states have call successors, (38), 2 states have call predecessors, (38), 13 states have return successors, (47), 13 states have call predecessors, (47), 28 states have call successors, (47) Word has length 1522 [2025-01-09 04:06:23,220 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-09 04:06:23,223 INFO L225 Difference]: With dead ends: 596 [2025-01-09 04:06:23,223 INFO L226 Difference]: Without dead ends: 294 [2025-01-09 04:06:23,226 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 3094 GetRequests, 3023 SyntacticMatches, 12 SemanticMatches, 59 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 956 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=595, Invalid=3065, Unknown=0, NotChecked=0, Total=3660 [2025-01-09 04:06:23,226 INFO L435 NwaCegarLoop]: 44 mSDtfsCounter, 140 mSDsluCounter, 560 mSDsCounter, 0 mSdLazyCounter, 871 mSolverCounterSat, 144 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 144 SdHoareTripleChecker+Valid, 604 SdHoareTripleChecker+Invalid, 1015 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 144 IncrementalHoareTripleChecker+Valid, 871 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2025-01-09 04:06:23,227 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [144 Valid, 604 Invalid, 1015 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [144 Valid, 871 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2025-01-09 04:06:23,227 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 294 states. [2025-01-09 04:06:23,248 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 294 to 241. [2025-01-09 04:06:23,248 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 241 states, 171 states have (on average 1.04093567251462) internal successors, (178), 167 states have internal predecessors, (178), 48 states have call successors, (48), 38 states have call predecessors, (48), 21 states have return successors, (83), 35 states have call predecessors, (83), 48 states have call successors, (83) [2025-01-09 04:06:23,249 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 241 states to 241 states and 309 transitions. [2025-01-09 04:06:23,250 INFO L78 Accepts]: Start accepts. Automaton has 241 states and 309 transitions. Word has length 1522 [2025-01-09 04:06:23,251 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-09 04:06:23,251 INFO L471 AbstractCegarLoop]: Abstraction has 241 states and 309 transitions. [2025-01-09 04:06:23,251 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 36 states, 35 states have (on average 3.6) internal successors, (126), 36 states have internal predecessors, (126), 28 states have call successors, (38), 2 states have call predecessors, (38), 13 states have return successors, (47), 13 states have call predecessors, (47), 28 states have call successors, (47) [2025-01-09 04:06:23,251 INFO L276 IsEmpty]: Start isEmpty. Operand 241 states and 309 transitions. [2025-01-09 04:06:23,271 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1482 [2025-01-09 04:06:23,272 INFO L210 NwaCegarLoop]: Found error trace [2025-01-09 04:06:23,272 INFO L218 NwaCegarLoop]: trace histogram [113, 113, 104, 104, 89, 86, 56, 56, 56, 56, 56, 56, 56, 52, 52, 52, 52, 52, 52, 52, 37, 30, 24, 18, 1, 1, 1, 1, 1, 1, 1] [2025-01-09 04:06:23,281 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Ended with exit code 0 [2025-01-09 04:06:23,472 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,18 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 04:06:23,473 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-01-09 04:06:23,473 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 04:06:23,474 INFO L85 PathProgramCache]: Analyzing trace with hash -1344339078, now seen corresponding path program 12 times [2025-01-09 04:06:23,474 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 04:06:23,474 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1550729965] [2025-01-09 04:06:23,474 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2025-01-09 04:06:23,474 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 04:06:23,511 INFO L108 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE partitioned 1481 statements into 93 equivalence classes. [2025-01-09 04:06:23,545 INFO L111 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 20 check-sat command(s) and asserted 379 of 1481 statements. [2025-01-09 04:06:23,545 INFO L114 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 20 check-sat command(s) [2025-01-09 04:06:23,545 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 04:06:23,807 INFO L134 CoverageAnalysis]: Checked inductivity of 65771 backedges. 1004 proven. 3627 refuted. 0 times theorem prover too weak. 61140 trivial. 0 not checked. [2025-01-09 04:06:23,807 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-09 04:06:23,807 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1550729965] [2025-01-09 04:06:23,807 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1550729965] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-09 04:06:23,807 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [289617540] [2025-01-09 04:06:23,807 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2025-01-09 04:06:23,807 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 04:06:23,807 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-09 04:06:23,809 INFO L229 MonitoredProcess]: Starting monitored process 19 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-01-09 04:06:23,809 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2025-01-09 04:06:24,084 INFO L108 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE partitioned 1481 statements into 93 equivalence classes. [2025-01-09 04:06:24,149 INFO L111 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 20 check-sat command(s) and asserted 379 of 1481 statements. [2025-01-09 04:06:24,149 INFO L114 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 20 check-sat command(s) [2025-01-09 04:06:24,149 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 04:06:24,153 INFO L256 TraceCheckSpWp]: Trace formula consists of 859 conjuncts, 18 conjuncts are in the unsatisfiable core [2025-01-09 04:06:24,162 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-09 04:06:24,231 INFO L134 CoverageAnalysis]: Checked inductivity of 65771 backedges. 1004 proven. 3627 refuted. 0 times theorem prover too weak. 61140 trivial. 0 not checked. [2025-01-09 04:06:24,231 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-01-09 04:06:28,048 INFO L134 CoverageAnalysis]: Checked inductivity of 65771 backedges. 1008 proven. 3656 refuted. 0 times theorem prover too weak. 61107 trivial. 0 not checked. [2025-01-09 04:06:28,048 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [289617540] provided 0 perfect and 2 imperfect interpolant sequences [2025-01-09 04:06:28,048 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-01-09 04:06:28,049 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13, 19] total 21 [2025-01-09 04:06:28,049 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1371845463] [2025-01-09 04:06:28,049 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-01-09 04:06:28,050 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2025-01-09 04:06:28,050 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-09 04:06:28,050 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2025-01-09 04:06:28,051 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=79, Invalid=341, Unknown=0, NotChecked=0, Total=420 [2025-01-09 04:06:28,051 INFO L87 Difference]: Start difference. First operand 241 states and 309 transitions. Second operand has 21 states, 20 states have (on average 3.75) internal successors, (75), 21 states have internal predecessors, (75), 17 states have call successors, (22), 1 states have call predecessors, (22), 9 states have return successors, (27), 11 states have call predecessors, (27), 17 states have call successors, (27) [2025-01-09 04:06:28,209 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-09 04:06:28,209 INFO L93 Difference]: Finished difference Result 255 states and 329 transitions. [2025-01-09 04:06:28,209 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2025-01-09 04:06:28,210 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 20 states have (on average 3.75) internal successors, (75), 21 states have internal predecessors, (75), 17 states have call successors, (22), 1 states have call predecessors, (22), 9 states have return successors, (27), 11 states have call predecessors, (27), 17 states have call successors, (27) Word has length 1481 [2025-01-09 04:06:28,211 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-09 04:06:28,213 INFO L225 Difference]: With dead ends: 255 [2025-01-09 04:06:28,213 INFO L226 Difference]: Without dead ends: 246 [2025-01-09 04:06:28,213 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 2986 GetRequests, 2951 SyntacticMatches, 9 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 161 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=153, Invalid=603, Unknown=0, NotChecked=0, Total=756 [2025-01-09 04:06:28,214 INFO L435 NwaCegarLoop]: 20 mSDtfsCounter, 76 mSDsluCounter, 180 mSDsCounter, 0 mSdLazyCounter, 194 mSolverCounterSat, 68 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 83 SdHoareTripleChecker+Valid, 200 SdHoareTripleChecker+Invalid, 262 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 68 IncrementalHoareTripleChecker+Valid, 194 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-01-09 04:06:28,214 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [83 Valid, 200 Invalid, 262 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [68 Valid, 194 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-01-09 04:06:28,214 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 246 states. [2025-01-09 04:06:28,227 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 246 to 243. [2025-01-09 04:06:28,227 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 243 states, 172 states have (on average 1.0406976744186047) internal successors, (179), 168 states have internal predecessors, (179), 49 states have call successors, (49), 38 states have call predecessors, (49), 21 states have return successors, (85), 36 states have call predecessors, (85), 49 states have call successors, (85) [2025-01-09 04:06:28,228 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 243 states to 243 states and 313 transitions. [2025-01-09 04:06:28,229 INFO L78 Accepts]: Start accepts. Automaton has 243 states and 313 transitions. Word has length 1481 [2025-01-09 04:06:28,229 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-09 04:06:28,229 INFO L471 AbstractCegarLoop]: Abstraction has 243 states and 313 transitions. [2025-01-09 04:06:28,229 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 20 states have (on average 3.75) internal successors, (75), 21 states have internal predecessors, (75), 17 states have call successors, (22), 1 states have call predecessors, (22), 9 states have return successors, (27), 11 states have call predecessors, (27), 17 states have call successors, (27) [2025-01-09 04:06:28,229 INFO L276 IsEmpty]: Start isEmpty. Operand 243 states and 313 transitions. [2025-01-09 04:06:28,238 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1414 [2025-01-09 04:06:28,238 INFO L210 NwaCegarLoop]: Found error trace [2025-01-09 04:06:28,239 INFO L218 NwaCegarLoop]: trace histogram [105, 105, 102, 102, 85, 82, 52, 52, 52, 52, 52, 52, 52, 51, 51, 51, 51, 51, 51, 51, 34, 30, 20, 20, 1, 1, 1, 1, 1, 1, 1] [2025-01-09 04:06:28,247 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Ended with exit code 0 [2025-01-09 04:06:28,439 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,19 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 04:06:28,439 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-01-09 04:06:28,440 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 04:06:28,440 INFO L85 PathProgramCache]: Analyzing trace with hash 1260343593, now seen corresponding path program 13 times [2025-01-09 04:06:28,440 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 04:06:28,440 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [133159657] [2025-01-09 04:06:28,440 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2025-01-09 04:06:28,440 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 04:06:28,461 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 1413 statements into 1 equivalence classes. [2025-01-09 04:06:28,548 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 1413 of 1413 statements. [2025-01-09 04:06:28,548 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 04:06:28,548 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 04:06:29,663 INFO L134 CoverageAnalysis]: Checked inductivity of 59739 backedges. 833 proven. 3582 refuted. 0 times theorem prover too weak. 55324 trivial. 0 not checked. [2025-01-09 04:06:29,664 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-09 04:06:29,664 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [133159657] [2025-01-09 04:06:29,664 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [133159657] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-09 04:06:29,664 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1116874206] [2025-01-09 04:06:29,664 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2025-01-09 04:06:29,664 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 04:06:29,664 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-09 04:06:29,665 INFO L229 MonitoredProcess]: Starting monitored process 20 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-01-09 04:06:29,666 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2025-01-09 04:06:29,949 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 1413 statements into 1 equivalence classes. [2025-01-09 04:06:30,136 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 1413 of 1413 statements. [2025-01-09 04:06:30,136 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 04:06:30,136 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 04:06:30,145 INFO L256 TraceCheckSpWp]: Trace formula consists of 3156 conjuncts, 18 conjuncts are in the unsatisfiable core [2025-01-09 04:06:30,153 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-09 04:06:30,221 INFO L134 CoverageAnalysis]: Checked inductivity of 59739 backedges. 833 proven. 3582 refuted. 0 times theorem prover too weak. 55324 trivial. 0 not checked. [2025-01-09 04:06:30,221 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-01-09 04:06:33,822 INFO L134 CoverageAnalysis]: Checked inductivity of 59739 backedges. 835 proven. 3613 refuted. 0 times theorem prover too weak. 55291 trivial. 0 not checked. [2025-01-09 04:06:33,823 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1116874206] provided 0 perfect and 2 imperfect interpolant sequences [2025-01-09 04:06:33,823 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-01-09 04:06:33,823 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13, 19] total 21 [2025-01-09 04:06:33,823 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [888776251] [2025-01-09 04:06:33,823 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-01-09 04:06:33,824 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2025-01-09 04:06:33,824 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-09 04:06:33,825 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2025-01-09 04:06:33,825 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=79, Invalid=341, Unknown=0, NotChecked=0, Total=420 [2025-01-09 04:06:33,825 INFO L87 Difference]: Start difference. First operand 243 states and 313 transitions. Second operand has 21 states, 20 states have (on average 3.75) internal successors, (75), 21 states have internal predecessors, (75), 17 states have call successors, (22), 1 states have call predecessors, (22), 9 states have return successors, (27), 11 states have call predecessors, (27), 17 states have call successors, (27) [2025-01-09 04:06:33,959 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-09 04:06:33,959 INFO L93 Difference]: Finished difference Result 273 states and 365 transitions. [2025-01-09 04:06:33,959 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2025-01-09 04:06:33,960 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 20 states have (on average 3.75) internal successors, (75), 21 states have internal predecessors, (75), 17 states have call successors, (22), 1 states have call predecessors, (22), 9 states have return successors, (27), 11 states have call predecessors, (27), 17 states have call successors, (27) Word has length 1413 [2025-01-09 04:06:33,961 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-09 04:06:33,962 INFO L225 Difference]: With dead ends: 273 [2025-01-09 04:06:33,962 INFO L226 Difference]: Without dead ends: 264 [2025-01-09 04:06:33,963 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 2850 GetRequests, 2815 SyntacticMatches, 9 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 161 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=153, Invalid=603, Unknown=0, NotChecked=0, Total=756 [2025-01-09 04:06:33,963 INFO L435 NwaCegarLoop]: 20 mSDtfsCounter, 66 mSDsluCounter, 154 mSDsCounter, 0 mSdLazyCounter, 174 mSolverCounterSat, 66 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 76 SdHoareTripleChecker+Valid, 174 SdHoareTripleChecker+Invalid, 240 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 66 IncrementalHoareTripleChecker+Valid, 174 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-01-09 04:06:33,964 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [76 Valid, 174 Invalid, 240 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [66 Valid, 174 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-01-09 04:06:33,964 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 264 states. [2025-01-09 04:06:33,977 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 264 to 251. [2025-01-09 04:06:33,977 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 251 states, 177 states have (on average 1.03954802259887) internal successors, (184), 173 states have internal predecessors, (184), 50 states have call successors, (50), 38 states have call predecessors, (50), 23 states have return successors, (90), 39 states have call predecessors, (90), 50 states have call successors, (90) [2025-01-09 04:06:33,978 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 251 states to 251 states and 324 transitions. [2025-01-09 04:06:33,979 INFO L78 Accepts]: Start accepts. Automaton has 251 states and 324 transitions. Word has length 1413 [2025-01-09 04:06:33,979 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-09 04:06:33,979 INFO L471 AbstractCegarLoop]: Abstraction has 251 states and 324 transitions. [2025-01-09 04:06:33,980 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 20 states have (on average 3.75) internal successors, (75), 21 states have internal predecessors, (75), 17 states have call successors, (22), 1 states have call predecessors, (22), 9 states have return successors, (27), 11 states have call predecessors, (27), 17 states have call successors, (27) [2025-01-09 04:06:33,980 INFO L276 IsEmpty]: Start isEmpty. Operand 251 states and 324 transitions. [2025-01-09 04:06:33,992 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1714 [2025-01-09 04:06:33,992 INFO L210 NwaCegarLoop]: Found error trace [2025-01-09 04:06:33,992 INFO L218 NwaCegarLoop]: trace histogram [126, 126, 125, 125, 102, 101, 63, 63, 63, 63, 63, 63, 63, 62, 62, 62, 62, 62, 62, 62, 40, 38, 24, 24, 1, 1, 1, 1, 1, 1, 1] [2025-01-09 04:06:34,007 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Ended with exit code 0 [2025-01-09 04:06:34,193 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,20 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 04:06:34,193 INFO L396 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-01-09 04:06:34,193 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 04:06:34,194 INFO L85 PathProgramCache]: Analyzing trace with hash -1595446967, now seen corresponding path program 14 times [2025-01-09 04:06:34,194 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 04:06:34,194 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [590708722] [2025-01-09 04:06:34,194 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-01-09 04:06:34,194 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 04:06:34,220 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 1713 statements into 2 equivalence classes. [2025-01-09 04:06:34,336 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 1713 of 1713 statements. [2025-01-09 04:06:34,336 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-01-09 04:06:34,336 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 04:06:36,087 INFO L134 CoverageAnalysis]: Checked inductivity of 88077 backedges. 1944 proven. 3693 refuted. 0 times theorem prover too weak. 82440 trivial. 0 not checked. [2025-01-09 04:06:36,087 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-09 04:06:36,087 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [590708722] [2025-01-09 04:06:36,087 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [590708722] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-09 04:06:36,087 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [344831384] [2025-01-09 04:06:36,087 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-01-09 04:06:36,087 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 04:06:36,087 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-09 04:06:36,089 INFO L229 MonitoredProcess]: Starting monitored process 21 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-01-09 04:06:36,090 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2025-01-09 04:06:36,409 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 1713 statements into 2 equivalence classes. [2025-01-09 04:06:36,649 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 1713 of 1713 statements. [2025-01-09 04:06:36,649 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-01-09 04:06:36,649 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 04:06:36,660 INFO L256 TraceCheckSpWp]: Trace formula consists of 3822 conjuncts, 22 conjuncts are in the unsatisfiable core [2025-01-09 04:06:36,670 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-09 04:06:36,766 INFO L134 CoverageAnalysis]: Checked inductivity of 88077 backedges. 2261 proven. 4499 refuted. 0 times theorem prover too weak. 81317 trivial. 0 not checked. [2025-01-09 04:06:36,767 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-01-09 04:06:42,301 INFO L134 CoverageAnalysis]: Checked inductivity of 88077 backedges. 2261 proven. 4551 refuted. 0 times theorem prover too weak. 81265 trivial. 0 not checked. [2025-01-09 04:06:42,301 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [344831384] provided 0 perfect and 2 imperfect interpolant sequences [2025-01-09 04:06:42,301 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-01-09 04:06:42,302 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 15, 23] total 29 [2025-01-09 04:06:42,302 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1873642974] [2025-01-09 04:06:42,302 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-01-09 04:06:42,303 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2025-01-09 04:06:42,304 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-09 04:06:42,304 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2025-01-09 04:06:42,304 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=141, Invalid=671, Unknown=0, NotChecked=0, Total=812 [2025-01-09 04:06:42,304 INFO L87 Difference]: Start difference. First operand 251 states and 324 transitions. Second operand has 29 states, 28 states have (on average 3.357142857142857) internal successors, (94), 29 states have internal predecessors, (94), 22 states have call successors, (29), 1 states have call predecessors, (29), 12 states have return successors, (37), 16 states have call predecessors, (37), 22 states have call successors, (37) [2025-01-09 04:06:42,563 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-09 04:06:42,565 INFO L93 Difference]: Finished difference Result 266 states and 343 transitions. [2025-01-09 04:06:42,565 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2025-01-09 04:06:42,566 INFO L78 Accepts]: Start accepts. Automaton has has 29 states, 28 states have (on average 3.357142857142857) internal successors, (94), 29 states have internal predecessors, (94), 22 states have call successors, (29), 1 states have call predecessors, (29), 12 states have return successors, (37), 16 states have call predecessors, (37), 22 states have call successors, (37) Word has length 1713 [2025-01-09 04:06:42,567 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-09 04:06:42,568 INFO L225 Difference]: With dead ends: 266 [2025-01-09 04:06:42,569 INFO L226 Difference]: Without dead ends: 251 [2025-01-09 04:06:42,569 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 3455 GetRequests, 3407 SyntacticMatches, 11 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 526 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=290, Invalid=1192, Unknown=0, NotChecked=0, Total=1482 [2025-01-09 04:06:42,570 INFO L435 NwaCegarLoop]: 54 mSDtfsCounter, 13 mSDsluCounter, 484 mSDsCounter, 0 mSdLazyCounter, 438 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15 SdHoareTripleChecker+Valid, 538 SdHoareTripleChecker+Invalid, 443 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 438 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2025-01-09 04:06:42,570 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [15 Valid, 538 Invalid, 443 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 438 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2025-01-09 04:06:42,571 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 251 states. [2025-01-09 04:06:42,589 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 251 to 248. [2025-01-09 04:06:42,589 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 248 states, 175 states have (on average 1.04) internal successors, (182), 171 states have internal predecessors, (182), 50 states have call successors, (50), 38 states have call predecessors, (50), 22 states have return successors, (83), 38 states have call predecessors, (83), 50 states have call successors, (83) [2025-01-09 04:06:42,590 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 248 states to 248 states and 315 transitions. [2025-01-09 04:06:42,591 INFO L78 Accepts]: Start accepts. Automaton has 248 states and 315 transitions. Word has length 1713 [2025-01-09 04:06:42,591 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-09 04:06:42,591 INFO L471 AbstractCegarLoop]: Abstraction has 248 states and 315 transitions. [2025-01-09 04:06:42,591 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 29 states, 28 states have (on average 3.357142857142857) internal successors, (94), 29 states have internal predecessors, (94), 22 states have call successors, (29), 1 states have call predecessors, (29), 12 states have return successors, (37), 16 states have call predecessors, (37), 22 states have call successors, (37) [2025-01-09 04:06:42,591 INFO L276 IsEmpty]: Start isEmpty. Operand 248 states and 315 transitions. [2025-01-09 04:06:42,598 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1278 [2025-01-09 04:06:42,598 INFO L210 NwaCegarLoop]: Found error trace [2025-01-09 04:06:42,599 INFO L218 NwaCegarLoop]: trace histogram [94, 94, 93, 93, 76, 75, 47, 47, 47, 47, 47, 47, 47, 46, 46, 46, 46, 46, 46, 46, 30, 28, 18, 18, 1, 1, 1, 1, 1, 1, 1] [2025-01-09 04:06:42,610 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Ended with exit code 0 [2025-01-09 04:06:42,799 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21,21 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 04:06:42,799 INFO L396 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-01-09 04:06:42,800 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 04:06:42,800 INFO L85 PathProgramCache]: Analyzing trace with hash -1885653303, now seen corresponding path program 15 times [2025-01-09 04:06:42,800 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 04:06:42,800 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1329934625] [2025-01-09 04:06:42,800 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-01-09 04:06:42,800 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 04:06:42,820 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 1277 statements into 82 equivalence classes. [2025-01-09 04:06:42,876 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 44 check-sat command(s) and asserted 735 of 1277 statements. [2025-01-09 04:06:42,876 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 44 check-sat command(s) [2025-01-09 04:06:42,876 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 04:06:43,587 INFO L134 CoverageAnalysis]: Checked inductivity of 48685 backedges. 4067 proven. 456 refuted. 0 times theorem prover too weak. 44162 trivial. 0 not checked. [2025-01-09 04:06:43,588 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-09 04:06:43,588 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1329934625] [2025-01-09 04:06:43,588 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1329934625] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-09 04:06:43,588 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2031865899] [2025-01-09 04:06:43,588 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-01-09 04:06:43,588 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 04:06:43,588 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-09 04:06:43,589 INFO L229 MonitoredProcess]: Starting monitored process 22 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-01-09 04:06:43,590 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process [2025-01-09 04:06:43,916 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 1277 statements into 82 equivalence classes. [2025-01-09 04:06:44,060 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 44 check-sat command(s) and asserted 735 of 1277 statements. [2025-01-09 04:06:44,060 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 44 check-sat command(s) [2025-01-09 04:06:44,060 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 04:06:44,065 INFO L256 TraceCheckSpWp]: Trace formula consists of 1646 conjuncts, 20 conjuncts are in the unsatisfiable core [2025-01-09 04:06:44,072 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-09 04:06:44,147 INFO L134 CoverageAnalysis]: Checked inductivity of 48685 backedges. 4338 proven. 509 refuted. 0 times theorem prover too weak. 43838 trivial. 0 not checked. [2025-01-09 04:06:44,147 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-01-09 04:06:47,298 INFO L134 CoverageAnalysis]: Checked inductivity of 48685 backedges. 4340 proven. 522 refuted. 0 times theorem prover too weak. 43823 trivial. 0 not checked. [2025-01-09 04:06:47,298 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2031865899] provided 0 perfect and 2 imperfect interpolant sequences [2025-01-09 04:06:47,298 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-01-09 04:06:47,298 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 16, 21] total 32 [2025-01-09 04:06:47,298 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1711874013] [2025-01-09 04:06:47,298 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-01-09 04:06:47,299 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2025-01-09 04:06:47,299 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-09 04:06:47,300 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2025-01-09 04:06:47,300 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=123, Invalid=869, Unknown=0, NotChecked=0, Total=992 [2025-01-09 04:06:47,300 INFO L87 Difference]: Start difference. First operand 248 states and 315 transitions. Second operand has 32 states, 31 states have (on average 3.2903225806451615) internal successors, (102), 32 states have internal predecessors, (102), 18 states have call successors, (32), 1 states have call predecessors, (32), 11 states have return successors, (37), 21 states have call predecessors, (37), 18 states have call successors, (37) [2025-01-09 04:06:47,797 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-09 04:06:47,797 INFO L93 Difference]: Finished difference Result 507 states and 647 transitions. [2025-01-09 04:06:47,797 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2025-01-09 04:06:47,797 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 31 states have (on average 3.2903225806451615) internal successors, (102), 32 states have internal predecessors, (102), 18 states have call successors, (32), 1 states have call predecessors, (32), 11 states have return successors, (37), 21 states have call predecessors, (37), 18 states have call successors, (37) Word has length 1277 [2025-01-09 04:06:47,798 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-09 04:06:47,800 INFO L225 Difference]: With dead ends: 507 [2025-01-09 04:06:47,800 INFO L226 Difference]: Without dead ends: 291 [2025-01-09 04:06:47,801 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 2597 GetRequests, 2536 SyntacticMatches, 10 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 644 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=435, Invalid=2321, Unknown=0, NotChecked=0, Total=2756 [2025-01-09 04:06:47,802 INFO L435 NwaCegarLoop]: 38 mSDtfsCounter, 68 mSDsluCounter, 450 mSDsCounter, 0 mSdLazyCounter, 868 mSolverCounterSat, 66 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 69 SdHoareTripleChecker+Valid, 488 SdHoareTripleChecker+Invalid, 934 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 66 IncrementalHoareTripleChecker+Valid, 868 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2025-01-09 04:06:47,802 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [69 Valid, 488 Invalid, 934 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [66 Valid, 868 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2025-01-09 04:06:47,802 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 291 states. [2025-01-09 04:06:47,816 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 291 to 257. [2025-01-09 04:06:47,816 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 257 states, 181 states have (on average 1.0386740331491713) internal successors, (188), 177 states have internal predecessors, (188), 52 states have call successors, (52), 39 states have call predecessors, (52), 23 states have return successors, (85), 40 states have call predecessors, (85), 52 states have call successors, (85) [2025-01-09 04:06:47,817 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 257 states to 257 states and 325 transitions. [2025-01-09 04:06:47,818 INFO L78 Accepts]: Start accepts. Automaton has 257 states and 325 transitions. Word has length 1277 [2025-01-09 04:06:47,819 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-09 04:06:47,819 INFO L471 AbstractCegarLoop]: Abstraction has 257 states and 325 transitions. [2025-01-09 04:06:47,819 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 31 states have (on average 3.2903225806451615) internal successors, (102), 32 states have internal predecessors, (102), 18 states have call successors, (32), 1 states have call predecessors, (32), 11 states have return successors, (37), 21 states have call predecessors, (37), 18 states have call successors, (37) [2025-01-09 04:06:47,819 INFO L276 IsEmpty]: Start isEmpty. Operand 257 states and 325 transitions. [2025-01-09 04:06:47,828 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1496 [2025-01-09 04:06:47,829 INFO L210 NwaCegarLoop]: Found error trace [2025-01-09 04:06:47,829 INFO L218 NwaCegarLoop]: trace histogram [110, 110, 109, 109, 89, 88, 55, 55, 55, 55, 55, 55, 55, 54, 54, 54, 54, 54, 54, 54, 34, 34, 22, 20, 1, 1, 1, 1, 1, 1, 1] [2025-01-09 04:06:47,839 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Forceful destruction successful, exit code 0 [2025-01-09 04:06:48,029 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable22 [2025-01-09 04:06:48,030 INFO L396 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-01-09 04:06:48,030 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 04:06:48,030 INFO L85 PathProgramCache]: Analyzing trace with hash 1775895019, now seen corresponding path program 16 times [2025-01-09 04:06:48,030 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 04:06:48,030 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [962619093] [2025-01-09 04:06:48,030 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-01-09 04:06:48,030 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 04:06:48,054 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 1495 statements into 2 equivalence classes. [2025-01-09 04:06:48,138 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 1 check-sat command(s) and asserted 1274 of 1495 statements. [2025-01-09 04:06:48,138 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 1 check-sat command(s) [2025-01-09 04:06:48,138 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 04:06:49,287 INFO L134 CoverageAnalysis]: Checked inductivity of 66932 backedges. 2934 proven. 1957 refuted. 0 times theorem prover too weak. 62041 trivial. 0 not checked. [2025-01-09 04:06:49,287 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-09 04:06:49,288 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [962619093] [2025-01-09 04:06:49,288 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [962619093] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-09 04:06:49,288 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [305957364] [2025-01-09 04:06:49,288 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-01-09 04:06:49,288 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 04:06:49,288 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-09 04:06:49,289 INFO L229 MonitoredProcess]: Starting monitored process 23 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-01-09 04:06:49,290 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Waiting until timeout for monitored process [2025-01-09 04:06:49,633 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 1495 statements into 2 equivalence classes. [2025-01-09 04:06:49,783 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 1 check-sat command(s) and asserted 1274 of 1495 statements. [2025-01-09 04:06:49,783 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 1 check-sat command(s) [2025-01-09 04:06:49,783 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 04:06:49,790 INFO L256 TraceCheckSpWp]: Trace formula consists of 2660 conjuncts, 22 conjuncts are in the unsatisfiable core [2025-01-09 04:06:49,799 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-09 04:06:49,880 INFO L134 CoverageAnalysis]: Checked inductivity of 66932 backedges. 3453 proven. 2409 refuted. 0 times theorem prover too weak. 61070 trivial. 0 not checked. [2025-01-09 04:06:49,880 INFO L312 TraceCheckSpWp]: Computing backward predicates...