./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/recursive-simple/fibo_2calls_6-1.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_6-1.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 e0068f83ad7eb3861b59041e8ebf2a38df44c3a60c0fafaf2450f6b793a60fbe --- Real Ultimate output --- This is Ultimate 0.3.0-?-551b009-m [2025-01-09 04:06:43,142 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-01-09 04:06:43,202 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2025-01-09 04:06:43,209 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-01-09 04:06:43,209 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-01-09 04:06:43,231 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-01-09 04:06:43,232 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-01-09 04:06:43,232 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-01-09 04:06:43,232 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-01-09 04:06:43,232 INFO L153 SettingsManager]: * Use memory slicer=true [2025-01-09 04:06:43,233 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-01-09 04:06:43,233 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-01-09 04:06:43,233 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-01-09 04:06:43,234 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-01-09 04:06:43,234 INFO L153 SettingsManager]: * Use SBE=true [2025-01-09 04:06:43,234 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-01-09 04:06:43,234 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2025-01-09 04:06:43,234 INFO L153 SettingsManager]: * sizeof long=4 [2025-01-09 04:06:43,234 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-01-09 04:06:43,234 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-01-09 04:06:43,235 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-01-09 04:06:43,235 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2025-01-09 04:06:43,235 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-01-09 04:06:43,235 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2025-01-09 04:06:43,235 INFO L153 SettingsManager]: * sizeof long double=12 [2025-01-09 04:06:43,235 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2025-01-09 04:06:43,235 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-01-09 04:06:43,235 INFO L153 SettingsManager]: * Use constant arrays=true [2025-01-09 04:06:43,235 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-01-09 04:06:43,235 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-01-09 04:06:43,236 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-01-09 04:06:43,236 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-01-09 04:06:43,236 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-01-09 04:06:43,236 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2025-01-09 04:06:43,236 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-01-09 04:06:43,236 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-01-09 04:06:43,236 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-01-09 04:06:43,236 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-01-09 04:06:43,236 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-01-09 04:06:43,236 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-01-09 04:06:43,236 INFO L153 SettingsManager]: * Compute procedure contracts=false [2025-01-09 04:06:43,236 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2025-01-09 04:06:43,237 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-01-09 04:06:43,237 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2025-01-09 04:06:43,237 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2025-01-09 04:06:43,237 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-01-09 04:06:43,237 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-01-09 04:06:43,237 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-01-09 04:06:43,237 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 -> e0068f83ad7eb3861b59041e8ebf2a38df44c3a60c0fafaf2450f6b793a60fbe [2025-01-09 04:06:43,449 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-01-09 04:06:43,454 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-01-09 04:06:43,456 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-01-09 04:06:43,457 INFO L270 PluginConnector]: Initializing CDTParser... [2025-01-09 04:06:43,457 INFO L274 PluginConnector]: CDTParser initialized [2025-01-09 04:06:43,458 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/recursive-simple/fibo_2calls_6-1.c [2025-01-09 04:06:44,600 INFO L533 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/b139f79b6/0db2dd142be04497ae43b7be5c123ab1/FLAG5ae5cbfab [2025-01-09 04:06:44,874 INFO L384 CDTParser]: Found 1 translation units. [2025-01-09 04:06:44,878 INFO L180 CDTParser]: Scanning /storage/repos/ultimate-jdk21/releaseScripts/default/sv-benchmarks/c/recursive-simple/fibo_2calls_6-1.c [2025-01-09 04:06:44,885 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/b139f79b6/0db2dd142be04497ae43b7be5c123ab1/FLAG5ae5cbfab [2025-01-09 04:06:44,899 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/b139f79b6/0db2dd142be04497ae43b7be5c123ab1 [2025-01-09 04:06:44,901 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-01-09 04:06:44,902 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2025-01-09 04:06:44,903 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-01-09 04:06:44,904 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-01-09 04:06:44,907 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-01-09 04:06:44,908 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.01 04:06:44" (1/1) ... [2025-01-09 04:06:44,908 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2992ca7a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 04:06:44, skipping insertion in model container [2025-01-09 04:06:44,909 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.01 04:06:44" (1/1) ... [2025-01-09 04:06:44,917 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-01-09 04:06:45,026 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_6-1.c[946,959] [2025-01-09 04:06:45,029 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-01-09 04:06:45,036 INFO L200 MainTranslator]: Completed pre-run [2025-01-09 04:06:45,047 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_6-1.c[946,959] [2025-01-09 04:06:45,047 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-01-09 04:06:45,057 INFO L204 MainTranslator]: Completed translation [2025-01-09 04:06:45,058 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 04:06:45 WrapperNode [2025-01-09 04:06:45,059 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-01-09 04:06:45,059 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-01-09 04:06:45,059 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-01-09 04:06:45,059 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-01-09 04:06:45,063 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 04:06:45" (1/1) ... [2025-01-09 04:06:45,067 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 04:06:45" (1/1) ... [2025-01-09 04:06:45,076 INFO L138 Inliner]: procedures = 14, calls = 12, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 20 [2025-01-09 04:06:45,077 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-01-09 04:06:45,077 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-01-09 04:06:45,078 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-01-09 04:06:45,078 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-01-09 04:06:45,083 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 04:06:45" (1/1) ... [2025-01-09 04:06:45,083 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 04:06:45" (1/1) ... [2025-01-09 04:06:45,083 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 04:06:45" (1/1) ... [2025-01-09 04:06:45,092 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 04:06:45,092 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 04:06:45" (1/1) ... [2025-01-09 04:06:45,093 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 04:06:45" (1/1) ... [2025-01-09 04:06:45,094 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 04:06:45" (1/1) ... [2025-01-09 04:06:45,097 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 04:06:45" (1/1) ... [2025-01-09 04:06:45,098 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 04:06:45" (1/1) ... [2025-01-09 04:06:45,099 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 04:06:45" (1/1) ... [2025-01-09 04:06:45,099 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 04:06:45" (1/1) ... [2025-01-09 04:06:45,102 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-01-09 04:06:45,103 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2025-01-09 04:06:45,103 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2025-01-09 04:06:45,103 INFO L274 PluginConnector]: RCFGBuilder initialized [2025-01-09 04:06:45,103 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 04:06:45" (1/1) ... [2025-01-09 04:06:45,107 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-01-09 04:06:45,115 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-09 04:06:45,124 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 04:06:45,130 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 04:06:45,144 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2025-01-09 04:06:45,144 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2025-01-09 04:06:45,144 INFO L130 BoogieDeclarations]: Found specification of procedure fibo2 [2025-01-09 04:06:45,144 INFO L138 BoogieDeclarations]: Found implementation of procedure fibo2 [2025-01-09 04:06:45,144 INFO L130 BoogieDeclarations]: Found specification of procedure fibo1 [2025-01-09 04:06:45,144 INFO L138 BoogieDeclarations]: Found implementation of procedure fibo1 [2025-01-09 04:06:45,144 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-01-09 04:06:45,144 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-01-09 04:06:45,187 INFO L234 CfgBuilder]: Building ICFG [2025-01-09 04:06:45,188 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2025-01-09 04:06:45,285 INFO L? ?]: Removed 8 outVars from TransFormulas that were not future-live. [2025-01-09 04:06:45,288 INFO L283 CfgBuilder]: Performing block encoding [2025-01-09 04:06:45,296 INFO L307 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-01-09 04:06:45,296 INFO L312 CfgBuilder]: Removed 0 assume(true) statements. [2025-01-09 04:06:45,296 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.01 04:06:45 BoogieIcfgContainer [2025-01-09 04:06:45,296 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2025-01-09 04:06:45,298 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2025-01-09 04:06:45,299 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2025-01-09 04:06:45,302 INFO L274 PluginConnector]: TraceAbstraction initialized [2025-01-09 04:06:45,302 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 09.01 04:06:44" (1/3) ... [2025-01-09 04:06:45,303 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5a951a5b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.01 04:06:45, skipping insertion in model container [2025-01-09 04:06:45,303 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 04:06:45" (2/3) ... [2025-01-09 04:06:45,303 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5a951a5b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.01 04:06:45, skipping insertion in model container [2025-01-09 04:06:45,304 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.01 04:06:45" (3/3) ... [2025-01-09 04:06:45,305 INFO L128 eAbstractionObserver]: Analyzing ICFG fibo_2calls_6-1.c [2025-01-09 04:06:45,315 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2025-01-09 04:06:45,316 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG fibo_2calls_6-1.c that has 3 procedures, 29 locations, 1 initial locations, 0 loop locations, and 1 error locations. [2025-01-09 04:06:45,356 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-01-09 04:06:45,368 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;@6d9877fe, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-01-09 04:06:45,368 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2025-01-09 04:06:45,371 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 04:06:45,374 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2025-01-09 04:06:45,374 INFO L210 NwaCegarLoop]: Found error trace [2025-01-09 04:06:45,375 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-09 04:06:45,375 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-01-09 04:06:45,378 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 04:06:45,378 INFO L85 PathProgramCache]: Analyzing trace with hash 1123300790, now seen corresponding path program 1 times [2025-01-09 04:06:45,387 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 04:06:45,391 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1398191516] [2025-01-09 04:06:45,391 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-09 04:06:45,391 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 04:06:45,470 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 10 statements into 1 equivalence classes. [2025-01-09 04:06:45,494 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 10 of 10 statements. [2025-01-09 04:06:45,494 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 04:06:45,494 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 04:06:45,584 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 04:06:45,584 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-09 04:06:45,584 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1398191516] [2025-01-09 04:06:45,585 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1398191516] provided 1 perfect and 0 imperfect interpolant sequences [2025-01-09 04:06:45,585 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-01-09 04:06:45,585 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2025-01-09 04:06:45,586 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [680780387] [2025-01-09 04:06:45,587 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-01-09 04:06:45,589 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-01-09 04:06:45,589 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-09 04:06:45,602 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-01-09 04:06:45,603 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2025-01-09 04:06:45,604 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 04:06:45,679 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-09 04:06:45,680 INFO L93 Difference]: Finished difference Result 41 states and 52 transitions. [2025-01-09 04:06:45,682 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-01-09 04:06:45,683 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 04:06:45,683 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-09 04:06:45,687 INFO L225 Difference]: With dead ends: 41 [2025-01-09 04:06:45,689 INFO L226 Difference]: Without dead ends: 29 [2025-01-09 04:06:45,691 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 04:06:45,693 INFO L435 NwaCegarLoop]: 30 mSDtfsCounter, 10 mSDsluCounter, 67 mSDsCounter, 0 mSdLazyCounter, 42 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s 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 04:06:45,695 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 04:06:45,705 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2025-01-09 04:06:45,715 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 27. [2025-01-09 04:06:45,716 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 04:06:45,719 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 34 transitions. [2025-01-09 04:06:45,720 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 34 transitions. Word has length 10 [2025-01-09 04:06:45,720 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-09 04:06:45,720 INFO L471 AbstractCegarLoop]: Abstraction has 27 states and 34 transitions. [2025-01-09 04:06:45,721 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 04:06:45,721 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 34 transitions. [2025-01-09 04:06:45,721 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2025-01-09 04:06:45,721 INFO L210 NwaCegarLoop]: Found error trace [2025-01-09 04:06:45,721 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-09 04:06:45,723 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2025-01-09 04:06:45,724 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-01-09 04:06:45,724 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 04:06:45,724 INFO L85 PathProgramCache]: Analyzing trace with hash 1177745932, now seen corresponding path program 1 times [2025-01-09 04:06:45,724 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 04:06:45,724 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [947660239] [2025-01-09 04:06:45,724 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-09 04:06:45,725 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 04:06:45,731 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 11 statements into 1 equivalence classes. [2025-01-09 04:06:45,735 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 11 of 11 statements. [2025-01-09 04:06:45,736 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 04:06:45,736 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 04:06:45,772 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 04:06:45,773 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-09 04:06:45,773 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [947660239] [2025-01-09 04:06:45,773 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [947660239] provided 1 perfect and 0 imperfect interpolant sequences [2025-01-09 04:06:45,773 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-01-09 04:06:45,773 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2025-01-09 04:06:45,773 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1448081181] [2025-01-09 04:06:45,773 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-01-09 04:06:45,774 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-01-09 04:06:45,774 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-09 04:06:45,775 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-01-09 04:06:45,775 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2025-01-09 04:06:45,775 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 04:06:45,825 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-09 04:06:45,825 INFO L93 Difference]: Finished difference Result 33 states and 41 transitions. [2025-01-09 04:06:45,826 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-01-09 04:06:45,826 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 04:06:45,826 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-09 04:06:45,827 INFO L225 Difference]: With dead ends: 33 [2025-01-09 04:06:45,827 INFO L226 Difference]: Without dead ends: 29 [2025-01-09 04:06:45,827 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 04:06:45,829 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, 0.0s IncrementalHoareTripleChecker+Time [2025-01-09 04:06:45,829 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [10 Valid, 80 Invalid, 41 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 40 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-01-09 04:06:45,829 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2025-01-09 04:06:45,834 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 27. [2025-01-09 04:06:45,834 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 04:06:45,836 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 34 transitions. [2025-01-09 04:06:45,837 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 34 transitions. Word has length 11 [2025-01-09 04:06:45,837 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-09 04:06:45,837 INFO L471 AbstractCegarLoop]: Abstraction has 27 states and 34 transitions. [2025-01-09 04:06:45,837 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 04:06:45,837 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 34 transitions. [2025-01-09 04:06:45,838 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2025-01-09 04:06:45,838 INFO L210 NwaCegarLoop]: Found error trace [2025-01-09 04:06:45,838 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 04:06:45,838 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2025-01-09 04:06:45,838 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-01-09 04:06:45,839 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 04:06:45,839 INFO L85 PathProgramCache]: Analyzing trace with hash 2110588723, now seen corresponding path program 1 times [2025-01-09 04:06:45,839 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 04:06:45,839 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [408180105] [2025-01-09 04:06:45,839 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-09 04:06:45,839 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 04:06:45,848 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 23 statements into 1 equivalence classes. [2025-01-09 04:06:45,856 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 23 of 23 statements. [2025-01-09 04:06:45,857 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 04:06:45,857 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 04:06:45,968 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 04:06:45,972 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-09 04:06:45,973 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [408180105] [2025-01-09 04:06:45,973 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [408180105] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-09 04:06:45,973 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [667673717] [2025-01-09 04:06:45,973 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-09 04:06:45,973 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 04:06:45,973 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-09 04:06:45,977 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 04:06:45,978 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 04:06:46,006 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 23 statements into 1 equivalence classes. [2025-01-09 04:06:46,015 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 23 of 23 statements. [2025-01-09 04:06:46,017 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 04:06:46,017 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 04:06:46,018 INFO L256 TraceCheckSpWp]: Trace formula consists of 70 conjuncts, 6 conjuncts are in the unsatisfiable core [2025-01-09 04:06:46,021 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-09 04:06:46,076 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 04:06:46,076 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-01-09 04:06:46,225 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 04:06:46,225 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [667673717] provided 0 perfect and 2 imperfect interpolant sequences [2025-01-09 04:06:46,225 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-01-09 04:06:46,226 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 7, 7] total 12 [2025-01-09 04:06:46,226 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [276210831] [2025-01-09 04:06:46,226 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-01-09 04:06:46,226 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2025-01-09 04:06:46,226 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-09 04:06:46,227 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2025-01-09 04:06:46,227 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2025-01-09 04:06:46,227 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 04:06:46,344 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-09 04:06:46,344 INFO L93 Difference]: Finished difference Result 55 states and 75 transitions. [2025-01-09 04:06:46,344 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2025-01-09 04:06:46,345 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 04:06:46,345 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-09 04:06:46,345 INFO L225 Difference]: With dead ends: 55 [2025-01-09 04:06:46,345 INFO L226 Difference]: Without dead ends: 31 [2025-01-09 04:06:46,346 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 04:06:46,346 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 04:06:46,346 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 04:06:46,347 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states. [2025-01-09 04:06:46,350 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 29. [2025-01-09 04:06:46,350 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 04:06:46,350 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 36 transitions. [2025-01-09 04:06:46,351 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 36 transitions. Word has length 23 [2025-01-09 04:06:46,351 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-09 04:06:46,351 INFO L471 AbstractCegarLoop]: Abstraction has 29 states and 36 transitions. [2025-01-09 04:06:46,351 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 04:06:46,351 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 36 transitions. [2025-01-09 04:06:46,352 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2025-01-09 04:06:46,352 INFO L210 NwaCegarLoop]: Found error trace [2025-01-09 04:06:46,352 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 04:06:46,360 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2025-01-09 04:06:46,556 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 04:06:46,556 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-01-09 04:06:46,557 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 04:06:46,557 INFO L85 PathProgramCache]: Analyzing trace with hash 1277869167, now seen corresponding path program 1 times [2025-01-09 04:06:46,557 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 04:06:46,557 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [401069010] [2025-01-09 04:06:46,557 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-09 04:06:46,557 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 04:06:46,561 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 24 statements into 1 equivalence classes. [2025-01-09 04:06:46,566 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 24 of 24 statements. [2025-01-09 04:06:46,566 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 04:06:46,566 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 04:06:46,622 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 04:06:46,622 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-09 04:06:46,622 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [401069010] [2025-01-09 04:06:46,622 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [401069010] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-09 04:06:46,622 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1984075145] [2025-01-09 04:06:46,622 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-09 04:06:46,622 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 04:06:46,623 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-09 04:06:46,624 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 04:06:46,630 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 04:06:46,649 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 24 statements into 1 equivalence classes. [2025-01-09 04:06:46,657 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 24 of 24 statements. [2025-01-09 04:06:46,658 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 04:06:46,658 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 04:06:46,658 INFO L256 TraceCheckSpWp]: Trace formula consists of 72 conjuncts, 6 conjuncts are in the unsatisfiable core [2025-01-09 04:06:46,659 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-09 04:06:46,680 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 04:06:46,680 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-01-09 04:06:46,811 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 04:06:46,811 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1984075145] provided 0 perfect and 2 imperfect interpolant sequences [2025-01-09 04:06:46,811 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-01-09 04:06:46,811 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 10 [2025-01-09 04:06:46,811 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1548469328] [2025-01-09 04:06:46,811 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-01-09 04:06:46,812 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2025-01-09 04:06:46,812 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-09 04:06:46,812 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2025-01-09 04:06:46,812 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2025-01-09 04:06:46,813 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 04:06:46,896 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-09 04:06:46,896 INFO L93 Difference]: Finished difference Result 40 states and 52 transitions. [2025-01-09 04:06:46,897 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2025-01-09 04:06:46,897 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 04:06:46,897 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-09 04:06:46,898 INFO L225 Difference]: With dead ends: 40 [2025-01-09 04:06:46,898 INFO L226 Difference]: Without dead ends: 36 [2025-01-09 04:06:46,898 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 04:06:46,899 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 04:06:46,899 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 04:06:46,899 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2025-01-09 04:06:46,903 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 34. [2025-01-09 04:06:46,903 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 04:06:46,904 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 45 transitions. [2025-01-09 04:06:46,904 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 45 transitions. Word has length 24 [2025-01-09 04:06:46,904 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-09 04:06:46,904 INFO L471 AbstractCegarLoop]: Abstraction has 34 states and 45 transitions. [2025-01-09 04:06:46,904 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 04:06:46,904 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 45 transitions. [2025-01-09 04:06:46,905 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2025-01-09 04:06:46,905 INFO L210 NwaCegarLoop]: Found error trace [2025-01-09 04:06:46,905 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 04:06:46,912 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2025-01-09 04:06:47,105 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 04:06:47,106 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-01-09 04:06:47,106 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 04:06:47,106 INFO L85 PathProgramCache]: Analyzing trace with hash -2061621832, now seen corresponding path program 1 times [2025-01-09 04:06:47,106 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 04:06:47,106 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [916500668] [2025-01-09 04:06:47,106 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-09 04:06:47,106 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 04:06:47,110 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 36 statements into 1 equivalence classes. [2025-01-09 04:06:47,115 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 36 of 36 statements. [2025-01-09 04:06:47,115 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 04:06:47,115 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 04:06:47,161 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 04:06:47,162 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-09 04:06:47,162 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [916500668] [2025-01-09 04:06:47,162 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [916500668] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-09 04:06:47,162 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1737978825] [2025-01-09 04:06:47,162 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-09 04:06:47,162 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 04:06:47,162 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-09 04:06:47,164 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 04:06:47,166 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 04:06:47,195 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 36 statements into 1 equivalence classes. [2025-01-09 04:06:47,214 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 36 of 36 statements. [2025-01-09 04:06:47,214 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 04:06:47,214 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 04:06:47,219 INFO L256 TraceCheckSpWp]: Trace formula consists of 99 conjuncts, 8 conjuncts are in the unsatisfiable core [2025-01-09 04:06:47,220 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-09 04:06:47,280 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 04:06:47,280 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-01-09 04:06:47,561 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 04:06:47,562 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1737978825] provided 0 perfect and 2 imperfect interpolant sequences [2025-01-09 04:06:47,562 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-01-09 04:06:47,563 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 8, 9] total 14 [2025-01-09 04:06:47,563 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [967418800] [2025-01-09 04:06:47,563 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-01-09 04:06:47,564 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2025-01-09 04:06:47,564 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-09 04:06:47,564 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2025-01-09 04:06:47,565 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=146, Unknown=0, NotChecked=0, Total=182 [2025-01-09 04:06:47,565 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 04:06:47,692 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-09 04:06:47,692 INFO L93 Difference]: Finished difference Result 69 states and 100 transitions. [2025-01-09 04:06:47,693 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2025-01-09 04:06:47,693 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 04:06:47,693 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-09 04:06:47,694 INFO L225 Difference]: With dead ends: 69 [2025-01-09 04:06:47,695 INFO L226 Difference]: Without dead ends: 38 [2025-01-09 04:06:47,696 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 04:06:47,697 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 04:06:47,697 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 04:06:47,697 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states. [2025-01-09 04:06:47,701 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 36. [2025-01-09 04:06:47,701 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 04:06:47,702 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 47 transitions. [2025-01-09 04:06:47,702 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 47 transitions. Word has length 36 [2025-01-09 04:06:47,702 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-09 04:06:47,702 INFO L471 AbstractCegarLoop]: Abstraction has 36 states and 47 transitions. [2025-01-09 04:06:47,702 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 04:06:47,702 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 47 transitions. [2025-01-09 04:06:47,703 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2025-01-09 04:06:47,703 INFO L210 NwaCegarLoop]: Found error trace [2025-01-09 04:06:47,703 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 04:06:47,709 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 04:06:47,907 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 04:06:47,907 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-01-09 04:06:47,908 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 04:06:47,908 INFO L85 PathProgramCache]: Analyzing trace with hash 1167294498, now seen corresponding path program 1 times [2025-01-09 04:06:47,908 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 04:06:47,908 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2076335935] [2025-01-09 04:06:47,908 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-09 04:06:47,908 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 04:06:47,911 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 37 statements into 1 equivalence classes. [2025-01-09 04:06:47,915 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 37 of 37 statements. [2025-01-09 04:06:47,916 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 04:06:47,916 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 04:06:47,992 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 04:06:47,992 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-09 04:06:47,992 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2076335935] [2025-01-09 04:06:47,992 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2076335935] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-09 04:06:47,992 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1945045820] [2025-01-09 04:06:47,992 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-09 04:06:47,993 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 04:06:47,993 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-09 04:06:47,997 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 04:06:48,002 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 04:06:48,023 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 37 statements into 1 equivalence classes. [2025-01-09 04:06:48,032 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 37 of 37 statements. [2025-01-09 04:06:48,032 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 04:06:48,032 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 04:06:48,033 INFO L256 TraceCheckSpWp]: Trace formula consists of 101 conjuncts, 8 conjuncts are in the unsatisfiable core [2025-01-09 04:06:48,034 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-09 04:06:48,093 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 04:06:48,094 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-01-09 04:06:48,328 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 04:06:48,328 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1945045820] provided 0 perfect and 2 imperfect interpolant sequences [2025-01-09 04:06:48,328 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-01-09 04:06:48,328 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 8, 9] total 18 [2025-01-09 04:06:48,328 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1012729323] [2025-01-09 04:06:48,328 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-01-09 04:06:48,329 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2025-01-09 04:06:48,329 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-09 04:06:48,329 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2025-01-09 04:06:48,329 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=257, Unknown=0, NotChecked=0, Total=306 [2025-01-09 04:06:48,329 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 04:06:48,685 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-09 04:06:48,685 INFO L93 Difference]: Finished difference Result 101 states and 161 transitions. [2025-01-09 04:06:48,685 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2025-01-09 04:06:48,685 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 04:06:48,686 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-09 04:06:48,686 INFO L225 Difference]: With dead ends: 101 [2025-01-09 04:06:48,687 INFO L226 Difference]: Without dead ends: 68 [2025-01-09 04:06:48,691 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 04:06:48,692 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 04:06:48,692 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 04:06:48,692 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 68 states. [2025-01-09 04:06:48,706 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 68 to 56. [2025-01-09 04:06:48,706 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 04:06:48,707 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 86 transitions. [2025-01-09 04:06:48,707 INFO L78 Accepts]: Start accepts. Automaton has 56 states and 86 transitions. Word has length 37 [2025-01-09 04:06:48,707 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-09 04:06:48,707 INFO L471 AbstractCegarLoop]: Abstraction has 56 states and 86 transitions. [2025-01-09 04:06:48,707 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 04:06:48,707 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states and 86 transitions. [2025-01-09 04:06:48,709 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2025-01-09 04:06:48,709 INFO L210 NwaCegarLoop]: Found error trace [2025-01-09 04:06:48,709 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 04:06:48,715 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2025-01-09 04:06:48,909 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 04:06:48,910 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-01-09 04:06:48,910 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 04:06:48,911 INFO L85 PathProgramCache]: Analyzing trace with hash 384535367, now seen corresponding path program 1 times [2025-01-09 04:06:48,911 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 04:06:48,911 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2120307154] [2025-01-09 04:06:48,911 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-09 04:06:48,911 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 04:06:48,919 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 51 statements into 1 equivalence classes. [2025-01-09 04:06:48,931 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 51 of 51 statements. [2025-01-09 04:06:48,931 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 04:06:48,931 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 04:06:49,109 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 04:06:49,109 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-09 04:06:49,109 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2120307154] [2025-01-09 04:06:49,110 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2120307154] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-09 04:06:49,110 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1840508737] [2025-01-09 04:06:49,110 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-09 04:06:49,110 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 04:06:49,110 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-09 04:06:49,113 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 04:06:49,114 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 04:06:49,139 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 51 statements into 1 equivalence classes. [2025-01-09 04:06:49,151 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 51 of 51 statements. [2025-01-09 04:06:49,151 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 04:06:49,151 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 04:06:49,151 INFO L256 TraceCheckSpWp]: Trace formula consists of 132 conjuncts, 10 conjuncts are in the unsatisfiable core [2025-01-09 04:06:49,153 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-09 04:06:49,214 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 04:06:49,214 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-01-09 04:06:49,615 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 04:06:49,615 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1840508737] provided 0 perfect and 2 imperfect interpolant sequences [2025-01-09 04:06:49,615 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-01-09 04:06:49,616 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 9, 11] total 17 [2025-01-09 04:06:49,616 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2081094379] [2025-01-09 04:06:49,616 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-01-09 04:06:49,616 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2025-01-09 04:06:49,616 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-09 04:06:49,617 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2025-01-09 04:06:49,617 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=217, Unknown=0, NotChecked=0, Total=272 [2025-01-09 04:06:49,617 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 04:06:49,831 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-09 04:06:49,832 INFO L93 Difference]: Finished difference Result 102 states and 193 transitions. [2025-01-09 04:06:49,832 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2025-01-09 04:06:49,832 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 04:06:49,832 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-09 04:06:49,834 INFO L225 Difference]: With dead ends: 102 [2025-01-09 04:06:49,835 INFO L226 Difference]: Without dead ends: 98 [2025-01-09 04:06:49,836 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 116 GetRequests, 92 SyntacticMatches, 4 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 95 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=93, Invalid=369, Unknown=0, NotChecked=0, Total=462 [2025-01-09 04:06:49,837 INFO L435 NwaCegarLoop]: 20 mSDtfsCounter, 33 mSDsluCounter, 144 mSDsCounter, 0 mSdLazyCounter, 165 mSolverCounterSat, 36 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 46 SdHoareTripleChecker+Valid, 164 SdHoareTripleChecker+Invalid, 201 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 36 IncrementalHoareTripleChecker+Valid, 165 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2025-01-09 04:06:49,837 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [46 Valid, 164 Invalid, 201 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [36 Valid, 165 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2025-01-09 04:06:49,839 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 98 states. [2025-01-09 04:06:49,853 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 98 to 64. [2025-01-09 04:06:49,855 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 04:06:49,857 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 64 states to 64 states and 106 transitions. [2025-01-09 04:06:49,859 INFO L78 Accepts]: Start accepts. Automaton has 64 states and 106 transitions. Word has length 51 [2025-01-09 04:06:49,859 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-09 04:06:49,859 INFO L471 AbstractCegarLoop]: Abstraction has 64 states and 106 transitions. [2025-01-09 04:06:49,859 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 04:06:49,859 INFO L276 IsEmpty]: Start isEmpty. Operand 64 states and 106 transitions. [2025-01-09 04:06:49,861 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2025-01-09 04:06:49,864 INFO L210 NwaCegarLoop]: Found error trace [2025-01-09 04:06:49,864 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 04:06:49,873 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 04:06:50,068 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 04:06:50,068 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-01-09 04:06:50,069 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 04:06:50,069 INFO L85 PathProgramCache]: Analyzing trace with hash -586612948, now seen corresponding path program 1 times [2025-01-09 04:06:50,069 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 04:06:50,069 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1611170698] [2025-01-09 04:06:50,069 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-09 04:06:50,069 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 04:06:50,077 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 93 statements into 1 equivalence classes. [2025-01-09 04:06:50,089 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 93 of 93 statements. [2025-01-09 04:06:50,091 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 04:06:50,091 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 04:06:50,311 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 04:06:50,312 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-09 04:06:50,312 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1611170698] [2025-01-09 04:06:50,312 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1611170698] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-09 04:06:50,312 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2118888019] [2025-01-09 04:06:50,313 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-09 04:06:50,313 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 04:06:50,313 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-09 04:06:50,316 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 04:06:50,319 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 04:06:50,354 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 93 statements into 1 equivalence classes. [2025-01-09 04:06:50,373 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 93 of 93 statements. [2025-01-09 04:06:50,374 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 04:06:50,374 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 04:06:50,375 INFO L256 TraceCheckSpWp]: Trace formula consists of 225 conjuncts, 12 conjuncts are in the unsatisfiable core [2025-01-09 04:06:50,376 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-09 04:06:50,536 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 04:06:50,536 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-01-09 04:06:51,241 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 04:06:51,241 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2118888019] provided 0 perfect and 2 imperfect interpolant sequences [2025-01-09 04:06:51,241 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-01-09 04:06:51,241 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 10, 13] total 22 [2025-01-09 04:06:51,241 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [490647096] [2025-01-09 04:06:51,242 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-01-09 04:06:51,242 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2025-01-09 04:06:51,242 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-09 04:06:51,243 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2025-01-09 04:06:51,243 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=64, Invalid=398, Unknown=0, NotChecked=0, Total=462 [2025-01-09 04:06:51,243 INFO L87 Difference]: Start difference. First operand 64 states and 106 transitions. Second operand has 22 states, 21 states have (on average 3.5714285714285716) internal successors, (75), 22 states have internal predecessors, (75), 17 states have call successors, (22), 1 states have call predecessors, (22), 9 states have return successors, (26), 10 states have call predecessors, (26), 17 states have call successors, (26) [2025-01-09 04:06:51,719 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-09 04:06:51,719 INFO L93 Difference]: Finished difference Result 177 states and 369 transitions. [2025-01-09 04:06:51,719 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2025-01-09 04:06:51,720 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 21 states have (on average 3.5714285714285716) internal successors, (75), 22 states have internal predecessors, (75), 17 states have call successors, (22), 1 states have call predecessors, (22), 9 states have return successors, (26), 10 states have call predecessors, (26), 17 states have call successors, (26) Word has length 93 [2025-01-09 04:06:51,720 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-09 04:06:51,721 INFO L225 Difference]: With dead ends: 177 [2025-01-09 04:06:51,721 INFO L226 Difference]: Without dead ends: 104 [2025-01-09 04:06:51,723 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 212 GetRequests, 169 SyntacticMatches, 6 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 245 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=260, Invalid=1222, Unknown=0, NotChecked=0, Total=1482 [2025-01-09 04:06:51,723 INFO L435 NwaCegarLoop]: 34 mSDtfsCounter, 76 mSDsluCounter, 346 mSDsCounter, 0 mSdLazyCounter, 588 mSolverCounterSat, 86 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 77 SdHoareTripleChecker+Valid, 380 SdHoareTripleChecker+Invalid, 674 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 86 IncrementalHoareTripleChecker+Valid, 588 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2025-01-09 04:06:51,723 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [77 Valid, 380 Invalid, 674 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [86 Valid, 588 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2025-01-09 04:06:51,724 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 104 states. [2025-01-09 04:06:51,731 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 104 to 93. [2025-01-09 04:06:51,732 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 04:06:51,732 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 93 states to 93 states and 132 transitions. [2025-01-09 04:06:51,733 INFO L78 Accepts]: Start accepts. Automaton has 93 states and 132 transitions. Word has length 93 [2025-01-09 04:06:51,733 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-09 04:06:51,733 INFO L471 AbstractCegarLoop]: Abstraction has 93 states and 132 transitions. [2025-01-09 04:06:51,733 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 21 states have (on average 3.5714285714285716) internal successors, (75), 22 states have internal predecessors, (75), 17 states have call successors, (22), 1 states have call predecessors, (22), 9 states have return successors, (26), 10 states have call predecessors, (26), 17 states have call successors, (26) [2025-01-09 04:06:51,733 INFO L276 IsEmpty]: Start isEmpty. Operand 93 states and 132 transitions. [2025-01-09 04:06:51,735 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 188 [2025-01-09 04:06:51,735 INFO L210 NwaCegarLoop]: Found error trace [2025-01-09 04:06:51,735 INFO L218 NwaCegarLoop]: trace histogram [14, 14, 13, 13, 12, 9, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 4, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2025-01-09 04:06:51,741 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 04:06:51,940 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 04:06:51,940 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-01-09 04:06:51,940 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 04:06:51,941 INFO L85 PathProgramCache]: Analyzing trace with hash 2132762695, now seen corresponding path program 2 times [2025-01-09 04:06:51,941 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 04:06:51,941 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [31439909] [2025-01-09 04:06:51,941 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-01-09 04:06:51,941 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 04:06:51,951 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 187 statements into 2 equivalence classes. [2025-01-09 04:06:51,979 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 187 of 187 statements. [2025-01-09 04:06:51,979 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-01-09 04:06:51,979 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 04:06:52,146 INFO L134 CoverageAnalysis]: Checked inductivity of 922 backedges. 52 proven. 230 refuted. 0 times theorem prover too weak. 640 trivial. 0 not checked. [2025-01-09 04:06:52,147 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-09 04:06:52,147 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [31439909] [2025-01-09 04:06:52,147 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [31439909] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-09 04:06:52,147 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [780850844] [2025-01-09 04:06:52,147 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-01-09 04:06:52,147 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 04:06:52,147 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-09 04:06:52,149 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 04:06:52,151 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 04:06:52,189 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 187 statements into 2 equivalence classes. [2025-01-09 04:06:52,225 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 187 of 187 statements. [2025-01-09 04:06:52,225 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-01-09 04:06:52,225 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 04:06:52,226 INFO L256 TraceCheckSpWp]: Trace formula consists of 434 conjuncts, 12 conjuncts are in the unsatisfiable core [2025-01-09 04:06:52,229 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-09 04:06:52,279 INFO L134 CoverageAnalysis]: Checked inductivity of 922 backedges. 52 proven. 230 refuted. 0 times theorem prover too weak. 640 trivial. 0 not checked. [2025-01-09 04:06:52,279 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-01-09 04:06:53,057 INFO L134 CoverageAnalysis]: Checked inductivity of 922 backedges. 52 proven. 238 refuted. 0 times theorem prover too weak. 632 trivial. 0 not checked. [2025-01-09 04:06:53,057 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [780850844] provided 0 perfect and 2 imperfect interpolant sequences [2025-01-09 04:06:53,057 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-01-09 04:06:53,057 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 13] total 15 [2025-01-09 04:06:53,057 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1199845205] [2025-01-09 04:06:53,057 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-01-09 04:06:53,058 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2025-01-09 04:06:53,058 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-09 04:06:53,058 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2025-01-09 04:06:53,058 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=165, Unknown=0, NotChecked=0, Total=210 [2025-01-09 04:06:53,058 INFO L87 Difference]: Start difference. First operand 93 states and 132 transitions. Second operand has 15 states, 14 states have (on average 4.0) internal successors, (56), 15 states have internal predecessors, (56), 11 states have call successors, (16), 1 states have call predecessors, (16), 6 states have return successors, (18), 8 states have call predecessors, (18), 11 states have call successors, (18) [2025-01-09 04:06:53,209 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-09 04:06:53,209 INFO L93 Difference]: Finished difference Result 130 states and 207 transitions. [2025-01-09 04:06:53,209 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2025-01-09 04:06:53,210 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 14 states have (on average 4.0) internal successors, (56), 15 states have internal predecessors, (56), 11 states have call successors, (16), 1 states have call predecessors, (16), 6 states have return successors, (18), 8 states have call predecessors, (18), 11 states have call successors, (18) Word has length 187 [2025-01-09 04:06:53,210 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-09 04:06:53,212 INFO L225 Difference]: With dead ends: 130 [2025-01-09 04:06:53,213 INFO L226 Difference]: Without dead ends: 126 [2025-01-09 04:06:53,213 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 389 GetRequests, 366 SyntacticMatches, 6 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 49 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=75, Invalid=267, Unknown=0, NotChecked=0, Total=342 [2025-01-09 04:06:53,214 INFO L435 NwaCegarLoop]: 20 mSDtfsCounter, 22 mSDsluCounter, 134 mSDsCounter, 0 mSdLazyCounter, 172 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 32 SdHoareTripleChecker+Valid, 154 SdHoareTripleChecker+Invalid, 196 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 172 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-01-09 04:06:53,214 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [32 Valid, 154 Invalid, 196 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 172 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-01-09 04:06:53,215 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 126 states. [2025-01-09 04:06:53,232 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 126 to 105. [2025-01-09 04:06:53,232 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 105 states, 69 states have (on average 1.1594202898550725) internal successors, (80), 71 states have internal predecessors, (80), 19 states have call successors, (19), 8 states have call predecessors, (19), 16 states have return successors, (63), 25 states have call predecessors, (63), 19 states have call successors, (63) [2025-01-09 04:06:53,233 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 105 states to 105 states and 162 transitions. [2025-01-09 04:06:53,233 INFO L78 Accepts]: Start accepts. Automaton has 105 states and 162 transitions. Word has length 187 [2025-01-09 04:06:53,234 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-09 04:06:53,234 INFO L471 AbstractCegarLoop]: Abstraction has 105 states and 162 transitions. [2025-01-09 04:06:53,234 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 14 states have (on average 4.0) internal successors, (56), 15 states have internal predecessors, (56), 11 states have call successors, (16), 1 states have call predecessors, (16), 6 states have return successors, (18), 8 states have call predecessors, (18), 11 states have call successors, (18) [2025-01-09 04:06:53,234 INFO L276 IsEmpty]: Start isEmpty. Operand 105 states and 162 transitions. [2025-01-09 04:06:53,239 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 148 [2025-01-09 04:06:53,239 INFO L210 NwaCegarLoop]: Found error trace [2025-01-09 04:06:53,239 INFO L218 NwaCegarLoop]: trace histogram [12, 12, 9, 9, 9, 8, 6, 6, 6, 6, 6, 6, 6, 5, 4, 4, 4, 4, 4, 4, 4, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-09 04:06:53,247 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 04:06:53,439 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 04:06:53,440 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-01-09 04:06:53,440 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 04:06:53,440 INFO L85 PathProgramCache]: Analyzing trace with hash 2015242506, now seen corresponding path program 3 times [2025-01-09 04:06:53,440 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 04:06:53,440 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1411794849] [2025-01-09 04:06:53,441 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-01-09 04:06:53,441 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 04:06:53,447 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 147 statements into 11 equivalence classes. [2025-01-09 04:06:53,458 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 9 check-sat command(s) and asserted 114 of 147 statements. [2025-01-09 04:06:53,458 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 9 check-sat command(s) [2025-01-09 04:06:53,458 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 04:06:53,573 INFO L134 CoverageAnalysis]: Checked inductivity of 556 backedges. 70 proven. 103 refuted. 0 times theorem prover too weak. 383 trivial. 0 not checked. [2025-01-09 04:06:53,574 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-09 04:06:53,574 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1411794849] [2025-01-09 04:06:53,574 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1411794849] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-09 04:06:53,574 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [871307270] [2025-01-09 04:06:53,574 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-01-09 04:06:53,574 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 04:06:53,574 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-09 04:06:53,576 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 04:06:53,577 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 04:06:53,616 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 147 statements into 11 equivalence classes. [2025-01-09 04:06:53,638 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 9 check-sat command(s) and asserted 114 of 147 statements. [2025-01-09 04:06:53,639 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 9 check-sat command(s) [2025-01-09 04:06:53,639 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 04:06:53,639 INFO L256 TraceCheckSpWp]: Trace formula consists of 270 conjuncts, 10 conjuncts are in the unsatisfiable core [2025-01-09 04:06:53,641 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-09 04:06:53,701 INFO L134 CoverageAnalysis]: Checked inductivity of 556 backedges. 70 proven. 109 refuted. 0 times theorem prover too weak. 377 trivial. 0 not checked. [2025-01-09 04:06:53,701 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-01-09 04:06:54,301 INFO L134 CoverageAnalysis]: Checked inductivity of 556 backedges. 70 proven. 114 refuted. 0 times theorem prover too weak. 372 trivial. 0 not checked. [2025-01-09 04:06:54,302 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [871307270] provided 0 perfect and 2 imperfect interpolant sequences [2025-01-09 04:06:54,302 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-01-09 04:06:54,302 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 11] total 14 [2025-01-09 04:06:54,302 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1570045797] [2025-01-09 04:06:54,302 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-01-09 04:06:54,303 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2025-01-09 04:06:54,303 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-09 04:06:54,303 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2025-01-09 04:06:54,303 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=141, Unknown=0, NotChecked=0, Total=182 [2025-01-09 04:06:54,303 INFO L87 Difference]: Start difference. First operand 105 states and 162 transitions. Second operand has 14 states, 13 states have (on average 4.153846153846154) internal successors, (54), 14 states have internal predecessors, (54), 9 states have call successors, (15), 1 states have call predecessors, (15), 6 states have return successors, (17), 8 states have call predecessors, (17), 9 states have call successors, (17) [2025-01-09 04:06:54,418 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-09 04:06:54,419 INFO L93 Difference]: Finished difference Result 125 states and 209 transitions. [2025-01-09 04:06:54,419 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2025-01-09 04:06:54,419 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 13 states have (on average 4.153846153846154) internal successors, (54), 14 states have internal predecessors, (54), 9 states have call successors, (15), 1 states have call predecessors, (15), 6 states have return successors, (17), 8 states have call predecessors, (17), 9 states have call successors, (17) Word has length 147 [2025-01-09 04:06:54,420 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-09 04:06:54,421 INFO L225 Difference]: With dead ends: 125 [2025-01-09 04:06:54,421 INFO L226 Difference]: Without dead ends: 121 [2025-01-09 04:06:54,421 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 306 GetRequests, 286 SyntacticMatches, 5 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 41 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=61, Invalid=211, Unknown=0, NotChecked=0, Total=272 [2025-01-09 04:06:54,422 INFO L435 NwaCegarLoop]: 20 mSDtfsCounter, 22 mSDsluCounter, 81 mSDsCounter, 0 mSdLazyCounter, 105 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 28 SdHoareTripleChecker+Valid, 101 SdHoareTripleChecker+Invalid, 129 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 105 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-01-09 04:06:54,422 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [28 Valid, 101 Invalid, 129 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 105 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-01-09 04:06:54,422 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 121 states. [2025-01-09 04:06:54,430 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 121 to 105. [2025-01-09 04:06:54,430 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 105 states, 69 states have (on average 1.1594202898550725) internal successors, (80), 71 states have internal predecessors, (80), 19 states have call successors, (19), 8 states have call predecessors, (19), 16 states have return successors, (63), 25 states have call predecessors, (63), 19 states have call successors, (63) [2025-01-09 04:06:54,431 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 105 states to 105 states and 162 transitions. [2025-01-09 04:06:54,432 INFO L78 Accepts]: Start accepts. Automaton has 105 states and 162 transitions. Word has length 147 [2025-01-09 04:06:54,432 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-09 04:06:54,432 INFO L471 AbstractCegarLoop]: Abstraction has 105 states and 162 transitions. [2025-01-09 04:06:54,432 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 13 states have (on average 4.153846153846154) internal successors, (54), 14 states have internal predecessors, (54), 9 states have call successors, (15), 1 states have call predecessors, (15), 6 states have return successors, (17), 8 states have call predecessors, (17), 9 states have call successors, (17) [2025-01-09 04:06:54,432 INFO L276 IsEmpty]: Start isEmpty. Operand 105 states and 162 transitions. [2025-01-09 04:06:54,433 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2025-01-09 04:06:54,433 INFO L210 NwaCegarLoop]: Found error trace [2025-01-09 04:06:54,433 INFO L218 NwaCegarLoop]: trace histogram [10, 10, 9, 9, 8, 8, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-09 04:06:54,439 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2025-01-09 04:06:54,634 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 04:06:54,634 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-01-09 04:06:54,635 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 04:06:54,635 INFO L85 PathProgramCache]: Analyzing trace with hash -31484793, now seen corresponding path program 4 times [2025-01-09 04:06:54,635 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 04:06:54,635 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [389776910] [2025-01-09 04:06:54,635 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-01-09 04:06:54,635 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 04:06:54,641 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 134 statements into 2 equivalence classes. [2025-01-09 04:06:54,651 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 1 check-sat command(s) and asserted 114 of 134 statements. [2025-01-09 04:06:54,651 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 1 check-sat command(s) [2025-01-09 04:06:54,651 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 04:06:54,728 INFO L134 CoverageAnalysis]: Checked inductivity of 444 backedges. 53 proven. 104 refuted. 0 times theorem prover too weak. 287 trivial. 0 not checked. [2025-01-09 04:06:54,728 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-09 04:06:54,729 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [389776910] [2025-01-09 04:06:54,729 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [389776910] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-09 04:06:54,729 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [442627402] [2025-01-09 04:06:54,729 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-01-09 04:06:54,729 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 04:06:54,729 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-09 04:06:54,732 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 04:06:54,733 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 04:06:54,776 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 134 statements into 2 equivalence classes. [2025-01-09 04:06:54,792 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 1 check-sat command(s) and asserted 114 of 134 statements. [2025-01-09 04:06:54,792 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 1 check-sat command(s) [2025-01-09 04:06:54,792 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 04:06:54,793 INFO L256 TraceCheckSpWp]: Trace formula consists of 239 conjuncts, 10 conjuncts are in the unsatisfiable core [2025-01-09 04:06:54,794 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-09 04:06:54,825 INFO L134 CoverageAnalysis]: Checked inductivity of 444 backedges. 53 proven. 104 refuted. 0 times theorem prover too weak. 287 trivial. 0 not checked. [2025-01-09 04:06:54,825 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-01-09 04:06:55,301 INFO L134 CoverageAnalysis]: Checked inductivity of 444 backedges. 53 proven. 109 refuted. 0 times theorem prover too weak. 282 trivial. 0 not checked. [2025-01-09 04:06:55,301 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [442627402] provided 0 perfect and 2 imperfect interpolant sequences [2025-01-09 04:06:55,301 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-01-09 04:06:55,302 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 11] total 13 [2025-01-09 04:06:55,302 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [643087226] [2025-01-09 04:06:55,302 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-01-09 04:06:55,302 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2025-01-09 04:06:55,302 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-09 04:06:55,303 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2025-01-09 04:06:55,303 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=121, Unknown=0, NotChecked=0, Total=156 [2025-01-09 04:06:55,306 INFO L87 Difference]: Start difference. First operand 105 states and 162 transitions. Second operand has 13 states, 12 states have (on average 4.25) internal successors, (51), 13 states have internal predecessors, (51), 9 states have call successors, (14), 1 states have call predecessors, (14), 5 states have return successors, (15), 7 states have call predecessors, (15), 9 states have call successors, (15) [2025-01-09 04:06:55,408 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-09 04:06:55,409 INFO L93 Difference]: Finished difference Result 135 states and 241 transitions. [2025-01-09 04:06:55,409 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2025-01-09 04:06:55,409 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 12 states have (on average 4.25) internal successors, (51), 13 states have internal predecessors, (51), 9 states have call successors, (14), 1 states have call predecessors, (14), 5 states have return successors, (15), 7 states have call predecessors, (15), 9 states have call successors, (15) Word has length 134 [2025-01-09 04:06:55,409 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-09 04:06:55,410 INFO L225 Difference]: With dead ends: 135 [2025-01-09 04:06:55,410 INFO L226 Difference]: Without dead ends: 131 [2025-01-09 04:06:55,411 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 280 GetRequests, 261 SyntacticMatches, 5 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=55, Invalid=185, Unknown=0, NotChecked=0, Total=240 [2025-01-09 04:06:55,411 INFO L435 NwaCegarLoop]: 20 mSDtfsCounter, 25 mSDsluCounter, 104 mSDsCounter, 0 mSdLazyCounter, 127 mSolverCounterSat, 29 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 34 SdHoareTripleChecker+Valid, 124 SdHoareTripleChecker+Invalid, 156 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 29 IncrementalHoareTripleChecker+Valid, 127 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-01-09 04:06:55,411 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [34 Valid, 124 Invalid, 156 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [29 Valid, 127 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-01-09 04:06:55,412 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 131 states. [2025-01-09 04:06:55,423 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 131 to 105. [2025-01-09 04:06:55,423 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 105 states, 69 states have (on average 1.1594202898550725) internal successors, (80), 71 states have internal predecessors, (80), 19 states have call successors, (19), 8 states have call predecessors, (19), 16 states have return successors, (63), 25 states have call predecessors, (63), 19 states have call successors, (63) [2025-01-09 04:06:55,424 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 105 states to 105 states and 162 transitions. [2025-01-09 04:06:55,424 INFO L78 Accepts]: Start accepts. Automaton has 105 states and 162 transitions. Word has length 134 [2025-01-09 04:06:55,425 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-09 04:06:55,425 INFO L471 AbstractCegarLoop]: Abstraction has 105 states and 162 transitions. [2025-01-09 04:06:55,425 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 12 states have (on average 4.25) internal successors, (51), 13 states have internal predecessors, (51), 9 states have call successors, (14), 1 states have call predecessors, (14), 5 states have return successors, (15), 7 states have call predecessors, (15), 9 states have call successors, (15) [2025-01-09 04:06:55,425 INFO L276 IsEmpty]: Start isEmpty. Operand 105 states and 162 transitions. [2025-01-09 04:06:55,426 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 202 [2025-01-09 04:06:55,426 INFO L210 NwaCegarLoop]: Found error trace [2025-01-09 04:06:55,426 INFO L218 NwaCegarLoop]: trace histogram [15, 15, 14, 14, 12, 11, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 5, 4, 3, 3, 1, 1, 1, 1, 1, 1, 1] [2025-01-09 04:06:55,439 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 04:06:55,634 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 04:06:55,634 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-01-09 04:06:55,635 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 04:06:55,635 INFO L85 PathProgramCache]: Analyzing trace with hash -2022247416, now seen corresponding path program 5 times [2025-01-09 04:06:55,635 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 04:06:55,635 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [698215847] [2025-01-09 04:06:55,635 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2025-01-09 04:06:55,635 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 04:06:55,643 INFO L108 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 partitioned 201 statements into 15 equivalence classes. [2025-01-09 04:06:55,649 INFO L111 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 7 check-sat command(s) and asserted 82 of 201 statements. [2025-01-09 04:06:55,649 INFO L114 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 7 check-sat command(s) [2025-01-09 04:06:55,649 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 04:06:55,816 INFO L134 CoverageAnalysis]: Checked inductivity of 1073 backedges. 157 proven. 276 refuted. 0 times theorem prover too weak. 640 trivial. 0 not checked. [2025-01-09 04:06:55,817 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-09 04:06:55,817 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [698215847] [2025-01-09 04:06:55,817 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [698215847] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-09 04:06:55,817 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [476322938] [2025-01-09 04:06:55,817 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2025-01-09 04:06:55,817 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 04:06:55,818 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-09 04:06:55,822 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 04:06:55,825 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 04:06:55,877 INFO L108 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 partitioned 201 statements into 15 equivalence classes. [2025-01-09 04:06:55,893 INFO L111 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 7 check-sat command(s) and asserted 82 of 201 statements. [2025-01-09 04:06:55,893 INFO L114 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 7 check-sat command(s) [2025-01-09 04:06:55,893 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 04:06:55,894 INFO L256 TraceCheckSpWp]: Trace formula consists of 184 conjuncts, 14 conjuncts are in the unsatisfiable core [2025-01-09 04:06:55,896 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-09 04:06:55,956 INFO L134 CoverageAnalysis]: Checked inductivity of 1073 backedges. 612 proven. 126 refuted. 0 times theorem prover too weak. 335 trivial. 0 not checked. [2025-01-09 04:06:55,957 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-01-09 04:06:56,800 INFO L134 CoverageAnalysis]: Checked inductivity of 1073 backedges. 157 proven. 279 refuted. 0 times theorem prover too weak. 637 trivial. 0 not checked. [2025-01-09 04:06:56,800 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [476322938] provided 0 perfect and 2 imperfect interpolant sequences [2025-01-09 04:06:56,800 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-01-09 04:06:56,800 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13, 15] total 19 [2025-01-09 04:06:56,800 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1628821358] [2025-01-09 04:06:56,801 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-01-09 04:06:56,801 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2025-01-09 04:06:56,801 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-09 04:06:56,802 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2025-01-09 04:06:56,802 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=291, Unknown=0, NotChecked=0, Total=342 [2025-01-09 04:06:56,802 INFO L87 Difference]: Start difference. First operand 105 states and 162 transitions. Second operand has 19 states, 19 states have (on average 4.526315789473684) internal successors, (86), 19 states have internal predecessors, (86), 13 states have call successors, (25), 2 states have call predecessors, (25), 8 states have return successors, (27), 11 states have call predecessors, (27), 13 states have call successors, (27) [2025-01-09 04:06:57,158 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-09 04:06:57,159 INFO L93 Difference]: Finished difference Result 267 states and 514 transitions. [2025-01-09 04:06:57,159 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2025-01-09 04:06:57,159 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 4.526315789473684) internal successors, (86), 19 states have internal predecessors, (86), 13 states have call successors, (25), 2 states have call predecessors, (25), 8 states have return successors, (27), 11 states have call predecessors, (27), 13 states have call successors, (27) Word has length 201 [2025-01-09 04:06:57,160 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-09 04:06:57,161 INFO L225 Difference]: With dead ends: 267 [2025-01-09 04:06:57,161 INFO L226 Difference]: Without dead ends: 164 [2025-01-09 04:06:57,162 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 431 GetRequests, 391 SyntacticMatches, 7 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 159 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=224, Invalid=966, Unknown=0, NotChecked=0, Total=1190 [2025-01-09 04:06:57,163 INFO L435 NwaCegarLoop]: 31 mSDtfsCounter, 54 mSDsluCounter, 310 mSDsCounter, 0 mSdLazyCounter, 533 mSolverCounterSat, 57 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 54 SdHoareTripleChecker+Valid, 341 SdHoareTripleChecker+Invalid, 590 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 57 IncrementalHoareTripleChecker+Valid, 533 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2025-01-09 04:06:57,163 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [54 Valid, 341 Invalid, 590 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [57 Valid, 533 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2025-01-09 04:06:57,163 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 164 states. [2025-01-09 04:06:57,171 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 164 to 151. [2025-01-09 04:06:57,172 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 151 states, 102 states have (on average 1.1568627450980393) internal successors, (118), 99 states have internal predecessors, (118), 27 states have call successors, (27), 15 states have call predecessors, (27), 21 states have return successors, (100), 36 states have call predecessors, (100), 27 states have call successors, (100) [2025-01-09 04:06:57,173 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 151 states to 151 states and 245 transitions. [2025-01-09 04:06:57,173 INFO L78 Accepts]: Start accepts. Automaton has 151 states and 245 transitions. Word has length 201 [2025-01-09 04:06:57,173 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-09 04:06:57,173 INFO L471 AbstractCegarLoop]: Abstraction has 151 states and 245 transitions. [2025-01-09 04:06:57,174 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 4.526315789473684) internal successors, (86), 19 states have internal predecessors, (86), 13 states have call successors, (25), 2 states have call predecessors, (25), 8 states have return successors, (27), 11 states have call predecessors, (27), 13 states have call successors, (27) [2025-01-09 04:06:57,174 INFO L276 IsEmpty]: Start isEmpty. Operand 151 states and 245 transitions. [2025-01-09 04:06:57,175 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 202 [2025-01-09 04:06:57,175 INFO L210 NwaCegarLoop]: Found error trace [2025-01-09 04:06:57,176 INFO L218 NwaCegarLoop]: trace histogram [15, 15, 14, 14, 12, 11, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 5, 4, 3, 3, 1, 1, 1, 1, 1, 1, 1] [2025-01-09 04:06:57,201 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 04:06:57,376 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 04:06:57,376 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-01-09 04:06:57,377 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 04:06:57,377 INFO L85 PathProgramCache]: Analyzing trace with hash -278535210, now seen corresponding path program 6 times [2025-01-09 04:06:57,377 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 04:06:57,377 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1773332598] [2025-01-09 04:06:57,377 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2025-01-09 04:06:57,377 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 04:06:57,386 INFO L108 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE partitioned 201 statements into 15 equivalence classes. [2025-01-09 04:06:57,398 INFO L111 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 11 check-sat command(s) and asserted 147 of 201 statements. [2025-01-09 04:06:57,398 INFO L114 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 11 check-sat command(s) [2025-01-09 04:06:57,398 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 04:06:57,607 INFO L134 CoverageAnalysis]: Checked inductivity of 1073 backedges. 303 proven. 26 refuted. 0 times theorem prover too weak. 744 trivial. 0 not checked. [2025-01-09 04:06:57,607 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-09 04:06:57,607 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1773332598] [2025-01-09 04:06:57,607 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1773332598] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-09 04:06:57,607 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1261019067] [2025-01-09 04:06:57,607 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2025-01-09 04:06:57,607 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 04:06:57,607 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-09 04:06:57,609 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 04:06:57,611 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 04:06:57,671 INFO L108 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE partitioned 201 statements into 15 equivalence classes. [2025-01-09 04:06:57,703 INFO L111 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 11 check-sat command(s) and asserted 147 of 201 statements. [2025-01-09 04:06:57,703 INFO L114 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 11 check-sat command(s) [2025-01-09 04:06:57,704 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 04:06:57,706 INFO L256 TraceCheckSpWp]: Trace formula consists of 344 conjuncts, 12 conjuncts are in the unsatisfiable core [2025-01-09 04:06:57,708 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-09 04:06:57,774 INFO L134 CoverageAnalysis]: Checked inductivity of 1073 backedges. 337 proven. 33 refuted. 0 times theorem prover too weak. 703 trivial. 0 not checked. [2025-01-09 04:06:57,776 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-01-09 04:06:58,545 INFO L134 CoverageAnalysis]: Checked inductivity of 1073 backedges. 337 proven. 35 refuted. 0 times theorem prover too weak. 701 trivial. 0 not checked. [2025-01-09 04:06:58,546 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1261019067] provided 0 perfect and 2 imperfect interpolant sequences [2025-01-09 04:06:58,546 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-01-09 04:06:58,546 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 12, 13] total 24 [2025-01-09 04:06:58,546 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [95941427] [2025-01-09 04:06:58,546 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-01-09 04:06:58,547 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2025-01-09 04:06:58,547 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-09 04:06:58,548 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2025-01-09 04:06:58,548 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=82, Invalid=470, Unknown=0, NotChecked=0, Total=552 [2025-01-09 04:06:58,548 INFO L87 Difference]: Start difference. First operand 151 states and 245 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, (22), 10 states have call predecessors, (22), 13 states have call successors, (22) [2025-01-09 04:06:58,839 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-09 04:06:58,840 INFO L93 Difference]: Finished difference Result 316 states and 547 transitions. [2025-01-09 04:06:58,840 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2025-01-09 04:06:58,840 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, (22), 10 states have call predecessors, (22), 13 states have call successors, (22) Word has length 201 [2025-01-09 04:06:58,840 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-09 04:06:58,842 INFO L225 Difference]: With dead ends: 316 [2025-01-09 04:06:58,842 INFO L226 Difference]: Without dead ends: 175 [2025-01-09 04:06:58,843 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 427 GetRequests, 388 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 04:06:58,844 INFO L435 NwaCegarLoop]: 28 mSDtfsCounter, 49 mSDsluCounter, 262 mSDsCounter, 0 mSdLazyCounter, 422 mSolverCounterSat, 51 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 50 SdHoareTripleChecker+Valid, 290 SdHoareTripleChecker+Invalid, 473 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 51 IncrementalHoareTripleChecker+Valid, 422 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2025-01-09 04:06:58,844 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [50 Valid, 290 Invalid, 473 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [51 Valid, 422 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2025-01-09 04:06:58,844 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 175 states. [2025-01-09 04:06:58,853 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 175 to 159. [2025-01-09 04:06:58,854 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 159 states, 106 states have (on average 1.1415094339622642) internal successors, (121), 104 states have internal predecessors, (121), 29 states have call successors, (29), 14 states have call predecessors, (29), 23 states have return successors, (118), 40 states have call predecessors, (118), 29 states have call successors, (118) [2025-01-09 04:06:58,855 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 159 states to 159 states and 268 transitions. [2025-01-09 04:06:58,855 INFO L78 Accepts]: Start accepts. Automaton has 159 states and 268 transitions. Word has length 201 [2025-01-09 04:06:58,856 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-09 04:06:58,856 INFO L471 AbstractCegarLoop]: Abstraction has 159 states and 268 transitions. [2025-01-09 04:06:58,856 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, (22), 10 states have call predecessors, (22), 13 states have call successors, (22) [2025-01-09 04:06:58,856 INFO L276 IsEmpty]: Start isEmpty. Operand 159 states and 268 transitions. [2025-01-09 04:06:58,858 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 228 [2025-01-09 04:06:58,858 INFO L210 NwaCegarLoop]: Found error trace [2025-01-09 04:06:58,858 INFO L218 NwaCegarLoop]: trace histogram [17, 17, 16, 16, 13, 12, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 5, 5, 4, 3, 1, 1, 1, 1, 1, 1, 1] [2025-01-09 04:06:58,865 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 04:06:59,059 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 04:06:59,059 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-01-09 04:06:59,060 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 04:06:59,060 INFO L85 PathProgramCache]: Analyzing trace with hash 1667993212, now seen corresponding path program 7 times [2025-01-09 04:06:59,060 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 04:06:59,060 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1292878418] [2025-01-09 04:06:59,060 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2025-01-09 04:06:59,060 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 04:06:59,067 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 227 statements into 1 equivalence classes. [2025-01-09 04:06:59,082 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 227 of 227 statements. [2025-01-09 04:06:59,082 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 04:06:59,082 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 04:06:59,274 INFO L134 CoverageAnalysis]: Checked inductivity of 1392 backedges. 249 proven. 144 refuted. 0 times theorem prover too weak. 999 trivial. 0 not checked. [2025-01-09 04:06:59,274 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-09 04:06:59,274 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1292878418] [2025-01-09 04:06:59,274 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1292878418] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-09 04:06:59,274 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2092311388] [2025-01-09 04:06:59,274 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2025-01-09 04:06:59,274 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 04:06:59,275 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-09 04:06:59,276 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 04:06:59,278 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 04:06:59,338 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 227 statements into 1 equivalence classes. [2025-01-09 04:06:59,373 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 227 of 227 statements. [2025-01-09 04:06:59,373 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 04:06:59,374 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 04:06:59,375 INFO L256 TraceCheckSpWp]: Trace formula consists of 523 conjuncts, 14 conjuncts are in the unsatisfiable core [2025-01-09 04:06:59,377 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-09 04:06:59,427 INFO L134 CoverageAnalysis]: Checked inductivity of 1392 backedges. 274 proven. 160 refuted. 0 times theorem prover too weak. 958 trivial. 0 not checked. [2025-01-09 04:06:59,428 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-01-09 04:07:00,511 INFO L134 CoverageAnalysis]: Checked inductivity of 1392 backedges. 274 proven. 174 refuted. 0 times theorem prover too weak. 944 trivial. 0 not checked. [2025-01-09 04:07:00,512 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2092311388] provided 0 perfect and 2 imperfect interpolant sequences [2025-01-09 04:07:00,512 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-01-09 04:07:00,512 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 11, 15] total 20 [2025-01-09 04:07:00,512 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [594202712] [2025-01-09 04:07:00,512 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-01-09 04:07:00,512 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2025-01-09 04:07:00,512 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-09 04:07:00,513 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2025-01-09 04:07:00,513 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=76, Invalid=304, Unknown=0, NotChecked=0, Total=380 [2025-01-09 04:07:00,513 INFO L87 Difference]: Start difference. First operand 159 states and 268 transitions. Second operand has 20 states, 19 states have (on average 3.526315789473684) internal successors, (67), 20 states have internal predecessors, (67), 14 states have call successors, (20), 1 states have call predecessors, (20), 7 states have return successors, (23), 10 states have call predecessors, (23), 14 states have call successors, (23) [2025-01-09 04:07:00,668 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-09 04:07:00,668 INFO L93 Difference]: Finished difference Result 177 states and 291 transitions. [2025-01-09 04:07:00,668 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2025-01-09 04:07:00,669 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 19 states have (on average 3.526315789473684) internal successors, (67), 20 states have internal predecessors, (67), 14 states have call successors, (20), 1 states have call predecessors, (20), 7 states have return successors, (23), 10 states have call predecessors, (23), 14 states have call successors, (23) Word has length 227 [2025-01-09 04:07:00,670 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-09 04:07:00,672 INFO L225 Difference]: With dead ends: 177 [2025-01-09 04:07:00,672 INFO L226 Difference]: Without dead ends: 171 [2025-01-09 04:07:00,672 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 473 GetRequests, 442 SyntacticMatches, 7 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 176 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=138, Invalid=512, Unknown=0, NotChecked=0, Total=650 [2025-01-09 04:07:00,672 INFO L435 NwaCegarLoop]: 37 mSDtfsCounter, 27 mSDsluCounter, 224 mSDsCounter, 0 mSdLazyCounter, 229 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 29 SdHoareTripleChecker+Valid, 261 SdHoareTripleChecker+Invalid, 245 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 229 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-01-09 04:07:00,673 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [29 Valid, 261 Invalid, 245 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 229 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-01-09 04:07:00,673 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 171 states. [2025-01-09 04:07:00,683 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 171 to 163. [2025-01-09 04:07:00,683 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 163 states, 110 states have (on average 1.1272727272727272) internal successors, (124), 106 states have internal predecessors, (124), 29 states have call successors, (29), 16 states have call predecessors, (29), 23 states have return successors, (118), 40 states have call predecessors, (118), 29 states have call successors, (118) [2025-01-09 04:07:00,684 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 163 states to 163 states and 271 transitions. [2025-01-09 04:07:00,685 INFO L78 Accepts]: Start accepts. Automaton has 163 states and 271 transitions. Word has length 227 [2025-01-09 04:07:00,686 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-09 04:07:00,686 INFO L471 AbstractCegarLoop]: Abstraction has 163 states and 271 transitions. [2025-01-09 04:07:00,687 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 19 states have (on average 3.526315789473684) internal successors, (67), 20 states have internal predecessors, (67), 14 states have call successors, (20), 1 states have call predecessors, (20), 7 states have return successors, (23), 10 states have call predecessors, (23), 14 states have call successors, (23) [2025-01-09 04:07:00,687 INFO L276 IsEmpty]: Start isEmpty. Operand 163 states and 271 transitions. [2025-01-09 04:07:00,688 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 148 [2025-01-09 04:07:00,689 INFO L210 NwaCegarLoop]: Found error trace [2025-01-09 04:07:00,689 INFO L218 NwaCegarLoop]: trace histogram [11, 11, 10, 10, 9, 8, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2025-01-09 04:07:00,696 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Ended with exit code 0 [2025-01-09 04:07:00,889 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 04:07:00,890 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-01-09 04:07:00,890 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 04:07:00,890 INFO L85 PathProgramCache]: Analyzing trace with hash 1967848152, now seen corresponding path program 8 times [2025-01-09 04:07:00,890 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 04:07:00,890 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [903205989] [2025-01-09 04:07:00,890 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-01-09 04:07:00,890 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 04:07:00,896 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 147 statements into 2 equivalence classes. [2025-01-09 04:07:00,904 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 147 of 147 statements. [2025-01-09 04:07:00,905 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-01-09 04:07:00,905 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 04:07:01,005 INFO L134 CoverageAnalysis]: Checked inductivity of 544 backedges. 111 proven. 27 refuted. 0 times theorem prover too weak. 406 trivial. 0 not checked. [2025-01-09 04:07:01,006 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-09 04:07:01,006 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [903205989] [2025-01-09 04:07:01,006 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [903205989] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-09 04:07:01,006 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1054950828] [2025-01-09 04:07:01,006 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-01-09 04:07:01,006 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 04:07:01,007 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-09 04:07:01,009 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 04:07:01,013 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 04:07:01,079 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 147 statements into 2 equivalence classes. [2025-01-09 04:07:01,105 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 147 of 147 statements. [2025-01-09 04:07:01,105 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-01-09 04:07:01,105 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 04:07:01,107 INFO L256 TraceCheckSpWp]: Trace formula consists of 345 conjuncts, 10 conjuncts are in the unsatisfiable core [2025-01-09 04:07:01,108 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-09 04:07:01,151 INFO L134 CoverageAnalysis]: Checked inductivity of 544 backedges. 141 proven. 34 refuted. 0 times theorem prover too weak. 369 trivial. 0 not checked. [2025-01-09 04:07:01,151 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-01-09 04:07:01,625 INFO L134 CoverageAnalysis]: Checked inductivity of 544 backedges. 143 proven. 37 refuted. 0 times theorem prover too weak. 364 trivial. 0 not checked. [2025-01-09 04:07:01,625 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1054950828] provided 0 perfect and 2 imperfect interpolant sequences [2025-01-09 04:07:01,625 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-01-09 04:07:01,625 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 11] total 15 [2025-01-09 04:07:01,626 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [353026177] [2025-01-09 04:07:01,626 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-01-09 04:07:01,626 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2025-01-09 04:07:01,626 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-09 04:07:01,626 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2025-01-09 04:07:01,627 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=164, Unknown=0, NotChecked=0, Total=210 [2025-01-09 04:07:01,627 INFO L87 Difference]: Start difference. First operand 163 states and 271 transitions. Second operand has 15 states, 14 states have (on average 4.0) internal successors, (56), 15 states have internal predecessors, (56), 9 states have call successors, (15), 1 states have call predecessors, (15), 6 states have return successors, (17), 8 states have call predecessors, (17), 9 states have call successors, (17) [2025-01-09 04:07:01,746 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-09 04:07:01,746 INFO L93 Difference]: Finished difference Result 183 states and 306 transitions. [2025-01-09 04:07:01,747 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2025-01-09 04:07:01,747 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 14 states have (on average 4.0) internal successors, (56), 15 states have internal predecessors, (56), 9 states have call successors, (15), 1 states have call predecessors, (15), 6 states have return successors, (17), 8 states have call predecessors, (17), 9 states have call successors, (17) Word has length 147 [2025-01-09 04:07:01,747 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-09 04:07:01,749 INFO L225 Difference]: With dead ends: 183 [2025-01-09 04:07:01,749 INFO L226 Difference]: Without dead ends: 179 [2025-01-09 04:07:01,749 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 305 GetRequests, 283 SyntacticMatches, 5 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 65 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=76, Invalid=266, Unknown=0, NotChecked=0, Total=342 [2025-01-09 04:07:01,750 INFO L435 NwaCegarLoop]: 21 mSDtfsCounter, 34 mSDsluCounter, 98 mSDsCounter, 0 mSdLazyCounter, 166 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 44 SdHoareTripleChecker+Valid, 119 SdHoareTripleChecker+Invalid, 192 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 166 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-01-09 04:07:01,750 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [44 Valid, 119 Invalid, 192 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 166 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-01-09 04:07:01,750 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 179 states. [2025-01-09 04:07:01,759 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 179 to 163. [2025-01-09 04:07:01,759 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 163 states, 110 states have (on average 1.1272727272727272) internal successors, (124), 106 states have internal predecessors, (124), 29 states have call successors, (29), 16 states have call predecessors, (29), 23 states have return successors, (118), 40 states have call predecessors, (118), 29 states have call successors, (118) [2025-01-09 04:07:01,760 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 163 states to 163 states and 271 transitions. [2025-01-09 04:07:01,760 INFO L78 Accepts]: Start accepts. Automaton has 163 states and 271 transitions. Word has length 147 [2025-01-09 04:07:01,761 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-09 04:07:01,761 INFO L471 AbstractCegarLoop]: Abstraction has 163 states and 271 transitions. [2025-01-09 04:07:01,761 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 14 states have (on average 4.0) internal successors, (56), 15 states have internal predecessors, (56), 9 states have call successors, (15), 1 states have call predecessors, (15), 6 states have return successors, (17), 8 states have call predecessors, (17), 9 states have call successors, (17) [2025-01-09 04:07:01,761 INFO L276 IsEmpty]: Start isEmpty. Operand 163 states and 271 transitions. [2025-01-09 04:07:01,763 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 175 [2025-01-09 04:07:01,763 INFO L210 NwaCegarLoop]: Found error trace [2025-01-09 04:07:01,763 INFO L218 NwaCegarLoop]: trace histogram [13, 13, 12, 12, 10, 10, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 4, 4, 3, 2, 1, 1, 1, 1, 1, 1, 1] [2025-01-09 04:07:01,769 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 04:07:01,967 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 04:07:01,967 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-01-09 04:07:01,967 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 04:07:01,968 INFO L85 PathProgramCache]: Analyzing trace with hash 521886258, now seen corresponding path program 9 times [2025-01-09 04:07:01,968 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 04:07:01,968 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2065278326] [2025-01-09 04:07:01,968 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-01-09 04:07:01,968 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 04:07:01,973 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 174 statements into 11 equivalence classes. [2025-01-09 04:07:01,991 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 11 check-sat command(s) and asserted 174 of 174 statements. [2025-01-09 04:07:01,992 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 11 check-sat command(s) [2025-01-09 04:07:01,992 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 04:07:02,785 INFO L134 CoverageAnalysis]: Checked inductivity of 786 backedges. 0 proven. 267 refuted. 0 times theorem prover too weak. 519 trivial. 0 not checked. [2025-01-09 04:07:02,785 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-09 04:07:02,785 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2065278326] [2025-01-09 04:07:02,785 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2065278326] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-09 04:07:02,785 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [436910244] [2025-01-09 04:07:02,785 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-01-09 04:07:02,785 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 04:07:02,785 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-09 04:07:02,787 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 04:07:02,790 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 04:07:02,860 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 174 statements into 11 equivalence classes. [2025-01-09 04:07:02,897 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 11 check-sat command(s) and asserted 174 of 174 statements. [2025-01-09 04:07:02,897 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 11 check-sat command(s) [2025-01-09 04:07:02,897 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 04:07:02,899 INFO L256 TraceCheckSpWp]: Trace formula consists of 405 conjuncts, 103 conjuncts are in the unsatisfiable core [2025-01-09 04:07:02,901 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-09 04:07:03,073 INFO L134 CoverageAnalysis]: Checked inductivity of 786 backedges. 0 proven. 267 refuted. 0 times theorem prover too weak. 519 trivial. 0 not checked. [2025-01-09 04:07:03,074 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-01-09 04:07:03,746 INFO L134 CoverageAnalysis]: Checked inductivity of 786 backedges. 0 proven. 267 refuted. 0 times theorem prover too weak. 519 trivial. 0 not checked. [2025-01-09 04:07:03,747 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [436910244] provided 0 perfect and 2 imperfect interpolant sequences [2025-01-09 04:07:03,747 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-01-09 04:07:03,747 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [28, 28, 28] total 36 [2025-01-09 04:07:03,747 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2133300728] [2025-01-09 04:07:03,747 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-01-09 04:07:03,748 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 36 states [2025-01-09 04:07:03,748 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-09 04:07:03,748 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2025-01-09 04:07:03,749 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=85, Invalid=1175, Unknown=0, NotChecked=0, Total=1260 [2025-01-09 04:07:03,749 INFO L87 Difference]: Start difference. First operand 163 states and 271 transitions. Second operand has 36 states, 36 states have (on average 1.3055555555555556) internal successors, (47), 19 states have internal predecessors, (47), 7 states have call successors, (9), 1 states have call predecessors, (9), 10 states have return successors, (23), 23 states have call predecessors, (23), 7 states have call successors, (23) [2025-01-09 04:07:04,142 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-09 04:07:04,142 INFO L93 Difference]: Finished difference Result 274 states and 622 transitions. [2025-01-09 04:07:04,142 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2025-01-09 04:07:04,143 INFO L78 Accepts]: Start accepts. Automaton has has 36 states, 36 states have (on average 1.3055555555555556) internal successors, (47), 19 states have internal predecessors, (47), 7 states have call successors, (9), 1 states have call predecessors, (9), 10 states have return successors, (23), 23 states have call predecessors, (23), 7 states have call successors, (23) Word has length 174 [2025-01-09 04:07:04,143 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-09 04:07:04,146 INFO L225 Difference]: With dead ends: 274 [2025-01-09 04:07:04,146 INFO L226 Difference]: Without dead ends: 270 [2025-01-09 04:07:04,147 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 403 GetRequests, 365 SyntacticMatches, 0 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 159 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=101, Invalid=1459, Unknown=0, NotChecked=0, Total=1560 [2025-01-09 04:07:04,147 INFO L435 NwaCegarLoop]: 68 mSDtfsCounter, 0 mSDsluCounter, 1726 mSDsCounter, 0 mSdLazyCounter, 898 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 1794 SdHoareTripleChecker+Invalid, 902 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 898 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2025-01-09 04:07:04,148 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [13 Valid, 1794 Invalid, 902 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 898 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2025-01-09 04:07:04,148 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 270 states. [2025-01-09 04:07:04,167 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 270 to 209. [2025-01-09 04:07:04,167 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 209 states, 138 states have (on average 1.1014492753623188) internal successors, (152), 134 states have internal predecessors, (152), 37 states have call successors, (37), 16 states have call predecessors, (37), 33 states have return successors, (229), 58 states have call predecessors, (229), 37 states have call successors, (229) [2025-01-09 04:07:04,169 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 209 states to 209 states and 418 transitions. [2025-01-09 04:07:04,170 INFO L78 Accepts]: Start accepts. Automaton has 209 states and 418 transitions. Word has length 174 [2025-01-09 04:07:04,170 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-09 04:07:04,170 INFO L471 AbstractCegarLoop]: Abstraction has 209 states and 418 transitions. [2025-01-09 04:07:04,170 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 36 states, 36 states have (on average 1.3055555555555556) internal successors, (47), 19 states have internal predecessors, (47), 7 states have call successors, (9), 1 states have call predecessors, (9), 10 states have return successors, (23), 23 states have call predecessors, (23), 7 states have call successors, (23) [2025-01-09 04:07:04,170 INFO L276 IsEmpty]: Start isEmpty. Operand 209 states and 418 transitions. [2025-01-09 04:07:04,172 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2025-01-09 04:07:04,172 INFO L210 NwaCegarLoop]: Found error trace [2025-01-09 04:07:04,173 INFO L218 NwaCegarLoop]: trace histogram [13, 13, 12, 12, 12, 11, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 2, 1, 1, 1, 1, 1, 1, 1] [2025-01-09 04:07:04,179 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 04:07:04,373 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 04:07:04,374 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-01-09 04:07:04,374 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 04:07:04,374 INFO L85 PathProgramCache]: Analyzing trace with hash -1602657640, now seen corresponding path program 1 times [2025-01-09 04:07:04,374 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 04:07:04,374 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1989687088] [2025-01-09 04:07:04,374 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-09 04:07:04,375 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 04:07:04,381 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 177 statements into 1 equivalence classes. [2025-01-09 04:07:04,391 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 177 of 177 statements. [2025-01-09 04:07:04,391 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 04:07:04,391 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 04:07:04,525 INFO L134 CoverageAnalysis]: Checked inductivity of 817 backedges. 69 proven. 247 refuted. 0 times theorem prover too weak. 501 trivial. 0 not checked. [2025-01-09 04:07:04,525 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-09 04:07:04,525 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1989687088] [2025-01-09 04:07:04,525 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1989687088] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-09 04:07:04,525 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [484406391] [2025-01-09 04:07:04,525 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-09 04:07:04,525 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 04:07:04,525 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-09 04:07:04,527 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 04:07:04,528 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 04:07:04,598 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 177 statements into 1 equivalence classes. [2025-01-09 04:07:04,628 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 177 of 177 statements. [2025-01-09 04:07:04,628 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 04:07:04,628 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 04:07:04,631 INFO L256 TraceCheckSpWp]: Trace formula consists of 411 conjuncts, 14 conjuncts are in the unsatisfiable core [2025-01-09 04:07:04,633 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-09 04:07:04,675 INFO L134 CoverageAnalysis]: Checked inductivity of 817 backedges. 69 proven. 247 refuted. 0 times theorem prover too weak. 501 trivial. 0 not checked. [2025-01-09 04:07:04,675 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-01-09 04:07:05,613 INFO L134 CoverageAnalysis]: Checked inductivity of 817 backedges. 73 proven. 257 refuted. 0 times theorem prover too weak. 487 trivial. 0 not checked. [2025-01-09 04:07:05,614 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [484406391] provided 0 perfect and 2 imperfect interpolant sequences [2025-01-09 04:07:05,614 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-01-09 04:07:05,614 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 15] total 17 [2025-01-09 04:07:05,614 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1602329307] [2025-01-09 04:07:05,614 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-01-09 04:07:05,614 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2025-01-09 04:07:05,614 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-09 04:07:05,615 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2025-01-09 04:07:05,615 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=217, Unknown=0, NotChecked=0, Total=272 [2025-01-09 04:07:05,615 INFO L87 Difference]: Start difference. First operand 209 states and 418 transitions. Second operand has 17 states, 16 states have (on average 3.875) internal successors, (62), 17 states have internal predecessors, (62), 13 states have call successors, (18), 1 states have call predecessors, (18), 7 states have return successors, (21), 9 states have call predecessors, (21), 13 states have call successors, (21) [2025-01-09 04:07:05,812 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-09 04:07:05,812 INFO L93 Difference]: Finished difference Result 256 states and 607 transitions. [2025-01-09 04:07:05,813 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2025-01-09 04:07:05,813 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 16 states have (on average 3.875) internal successors, (62), 17 states have internal predecessors, (62), 13 states have call successors, (18), 1 states have call predecessors, (18), 7 states have return successors, (21), 9 states have call predecessors, (21), 13 states have call successors, (21) Word has length 177 [2025-01-09 04:07:05,813 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-09 04:07:05,815 INFO L225 Difference]: With dead ends: 256 [2025-01-09 04:07:05,815 INFO L226 Difference]: Without dead ends: 157 [2025-01-09 04:07:05,817 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 373 GetRequests, 345 SyntacticMatches, 7 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 97 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=109, Invalid=397, Unknown=0, NotChecked=0, Total=506 [2025-01-09 04:07:05,817 INFO L435 NwaCegarLoop]: 42 mSDtfsCounter, 22 mSDsluCounter, 231 mSDsCounter, 0 mSdLazyCounter, 251 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 24 SdHoareTripleChecker+Valid, 273 SdHoareTripleChecker+Invalid, 267 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 251 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-01-09 04:07:05,817 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [24 Valid, 273 Invalid, 267 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 251 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-01-09 04:07:05,817 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 157 states. [2025-01-09 04:07:05,832 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 157 to 151. [2025-01-09 04:07:05,833 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 151 states, 102 states have (on average 1.1176470588235294) internal successors, (114), 100 states have internal predecessors, (114), 25 states have call successors, (25), 14 states have call predecessors, (25), 23 states have return successors, (71), 36 states have call predecessors, (71), 25 states have call successors, (71) [2025-01-09 04:07:05,834 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 151 states to 151 states and 210 transitions. [2025-01-09 04:07:05,834 INFO L78 Accepts]: Start accepts. Automaton has 151 states and 210 transitions. Word has length 177 [2025-01-09 04:07:05,834 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-09 04:07:05,834 INFO L471 AbstractCegarLoop]: Abstraction has 151 states and 210 transitions. [2025-01-09 04:07:05,835 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 16 states have (on average 3.875) internal successors, (62), 17 states have internal predecessors, (62), 13 states have call successors, (18), 1 states have call predecessors, (18), 7 states have return successors, (21), 9 states have call predecessors, (21), 13 states have call successors, (21) [2025-01-09 04:07:05,835 INFO L276 IsEmpty]: Start isEmpty. Operand 151 states and 210 transitions. [2025-01-09 04:07:05,836 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 229 [2025-01-09 04:07:05,836 INFO L210 NwaCegarLoop]: Found error trace [2025-01-09 04:07:05,837 INFO L218 NwaCegarLoop]: trace histogram [18, 18, 15, 15, 13, 13, 9, 9, 9, 9, 9, 9, 9, 7, 7, 7, 7, 7, 7, 7, 6, 5, 4, 2, 1, 1, 1, 1, 1, 1, 1] [2025-01-09 04:07:05,843 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 04:07:06,040 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 04:07:06,040 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-01-09 04:07:06,040 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 04:07:06,040 INFO L85 PathProgramCache]: Analyzing trace with hash -1414945584, now seen corresponding path program 10 times [2025-01-09 04:07:06,040 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 04:07:06,040 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [453405192] [2025-01-09 04:07:06,040 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-01-09 04:07:06,040 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 04:07:06,056 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 228 statements into 2 equivalence classes. [2025-01-09 04:07:06,071 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 1 check-sat command(s) and asserted 194 of 228 statements. [2025-01-09 04:07:06,075 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 1 check-sat command(s) [2025-01-09 04:07:06,075 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 04:07:06,239 INFO L134 CoverageAnalysis]: Checked inductivity of 1416 backedges. 106 proven. 288 refuted. 0 times theorem prover too weak. 1022 trivial. 0 not checked. [2025-01-09 04:07:06,239 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-09 04:07:06,239 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [453405192] [2025-01-09 04:07:06,239 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [453405192] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-09 04:07:06,239 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [577825890] [2025-01-09 04:07:06,239 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-01-09 04:07:06,239 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 04:07:06,239 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-09 04:07:06,241 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 04:07:06,243 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 04:07:06,320 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 228 statements into 2 equivalence classes. [2025-01-09 04:07:06,350 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 1 check-sat command(s) and asserted 194 of 228 statements. [2025-01-09 04:07:06,350 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 1 check-sat command(s) [2025-01-09 04:07:06,350 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 04:07:06,351 INFO L256 TraceCheckSpWp]: Trace formula consists of 406 conjuncts, 14 conjuncts are in the unsatisfiable core [2025-01-09 04:07:06,353 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-09 04:07:06,407 INFO L134 CoverageAnalysis]: Checked inductivity of 1416 backedges. 115 proven. 326 refuted. 0 times theorem prover too weak. 975 trivial. 0 not checked. [2025-01-09 04:07:06,407 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-01-09 04:07:07,488 INFO L134 CoverageAnalysis]: Checked inductivity of 1416 backedges. 117 proven. 338 refuted. 0 times theorem prover too weak. 961 trivial. 0 not checked. [2025-01-09 04:07:07,489 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [577825890] provided 0 perfect and 2 imperfect interpolant sequences [2025-01-09 04:07:07,489 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-01-09 04:07:07,489 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 11, 15] total 20 [2025-01-09 04:07:07,489 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1914609509] [2025-01-09 04:07:07,489 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-01-09 04:07:07,490 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2025-01-09 04:07:07,490 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-09 04:07:07,490 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2025-01-09 04:07:07,490 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=76, Invalid=304, Unknown=0, NotChecked=0, Total=380 [2025-01-09 04:07:07,491 INFO L87 Difference]: Start difference. First operand 151 states and 210 transitions. Second operand has 20 states, 19 states have (on average 3.526315789473684) internal successors, (67), 20 states have internal predecessors, (67), 14 states have call successors, (20), 1 states have call predecessors, (20), 7 states have return successors, (23), 10 states have call predecessors, (23), 14 states have call successors, (23) [2025-01-09 04:07:07,674 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-09 04:07:07,674 INFO L93 Difference]: Finished difference Result 168 states and 228 transitions. [2025-01-09 04:07:07,674 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2025-01-09 04:07:07,674 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 19 states have (on average 3.526315789473684) internal successors, (67), 20 states have internal predecessors, (67), 14 states have call successors, (20), 1 states have call predecessors, (20), 7 states have return successors, (23), 10 states have call predecessors, (23), 14 states have call successors, (23) Word has length 228 [2025-01-09 04:07:07,675 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-09 04:07:07,676 INFO L225 Difference]: With dead ends: 168 [2025-01-09 04:07:07,676 INFO L226 Difference]: Without dead ends: 123 [2025-01-09 04:07:07,677 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 475 GetRequests, 444 SyntacticMatches, 7 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 176 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=138, Invalid=512, Unknown=0, NotChecked=0, Total=650 [2025-01-09 04:07:07,677 INFO L435 NwaCegarLoop]: 36 mSDtfsCounter, 11 mSDsluCounter, 304 mSDsCounter, 0 mSdLazyCounter, 294 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 340 SdHoareTripleChecker+Invalid, 298 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 294 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-01-09 04:07:07,677 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [13 Valid, 340 Invalid, 298 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 294 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-01-09 04:07:07,678 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 123 states. [2025-01-09 04:07:07,685 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 123 to 121. [2025-01-09 04:07:07,685 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 121 states, 83 states have (on average 1.1204819277108433) internal successors, (93), 81 states have internal predecessors, (93), 20 states have call successors, (20), 13 states have call predecessors, (20), 17 states have return successors, (38), 26 states have call predecessors, (38), 20 states have call successors, (38) [2025-01-09 04:07:07,686 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 121 states to 121 states and 151 transitions. [2025-01-09 04:07:07,687 INFO L78 Accepts]: Start accepts. Automaton has 121 states and 151 transitions. Word has length 228 [2025-01-09 04:07:07,687 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-09 04:07:07,687 INFO L471 AbstractCegarLoop]: Abstraction has 121 states and 151 transitions. [2025-01-09 04:07:07,688 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 19 states have (on average 3.526315789473684) internal successors, (67), 20 states have internal predecessors, (67), 14 states have call successors, (20), 1 states have call predecessors, (20), 7 states have return successors, (23), 10 states have call predecessors, (23), 14 states have call successors, (23) [2025-01-09 04:07:07,688 INFO L276 IsEmpty]: Start isEmpty. Operand 121 states and 151 transitions. [2025-01-09 04:07:07,689 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 176 [2025-01-09 04:07:07,689 INFO L210 NwaCegarLoop]: Found error trace [2025-01-09 04:07:07,689 INFO L218 NwaCegarLoop]: trace histogram [13, 13, 12, 12, 11, 10, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 4, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2025-01-09 04:07:07,697 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Ended with exit code 0 [2025-01-09 04:07:07,890 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 04:07:07,890 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-01-09 04:07:07,891 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 04:07:07,891 INFO L85 PathProgramCache]: Analyzing trace with hash -257127670, now seen corresponding path program 11 times [2025-01-09 04:07:07,891 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 04:07:07,891 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1775762116] [2025-01-09 04:07:07,891 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2025-01-09 04:07:07,891 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 04:07:07,897 INFO L108 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 partitioned 175 statements into 11 equivalence classes. [2025-01-09 04:07:07,907 INFO L111 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 10 check-sat command(s) and asserted 158 of 175 statements. [2025-01-09 04:07:07,907 INFO L114 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 10 check-sat command(s) [2025-01-09 04:07:07,907 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 04:07:08,108 INFO L134 CoverageAnalysis]: Checked inductivity of 796 backedges. 183 proven. 264 refuted. 0 times theorem prover too weak. 349 trivial. 0 not checked. [2025-01-09 04:07:08,108 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-09 04:07:08,108 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1775762116] [2025-01-09 04:07:08,108 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1775762116] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-09 04:07:08,108 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1756581018] [2025-01-09 04:07:08,108 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2025-01-09 04:07:08,108 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 04:07:08,108 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-09 04:07:08,110 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 04:07:08,112 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 04:07:08,201 INFO L108 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 partitioned 175 statements into 11 equivalence classes. [2025-01-09 04:07:08,231 INFO L111 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 10 check-sat command(s) and asserted 158 of 175 statements. [2025-01-09 04:07:08,232 INFO L114 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 10 check-sat command(s) [2025-01-09 04:07:08,232 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 04:07:08,233 INFO L256 TraceCheckSpWp]: Trace formula consists of 353 conjuncts, 20 conjuncts are in the unsatisfiable core [2025-01-09 04:07:08,236 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-09 04:07:08,299 INFO L134 CoverageAnalysis]: Checked inductivity of 796 backedges. 173 proven. 269 refuted. 0 times theorem prover too weak. 354 trivial. 0 not checked. [2025-01-09 04:07:08,300 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-01-09 04:07:09,541 INFO L134 CoverageAnalysis]: Checked inductivity of 796 backedges. 175 proven. 281 refuted. 0 times theorem prover too weak. 340 trivial. 0 not checked. [2025-01-09 04:07:09,542 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1756581018] provided 0 perfect and 2 imperfect interpolant sequences [2025-01-09 04:07:09,542 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-01-09 04:07:09,542 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 16, 21] total 28 [2025-01-09 04:07:09,542 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1751985772] [2025-01-09 04:07:09,542 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-01-09 04:07:09,543 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2025-01-09 04:07:09,543 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-09 04:07:09,544 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2025-01-09 04:07:09,544 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=104, Invalid=652, Unknown=0, NotChecked=0, Total=756 [2025-01-09 04:07:09,544 INFO L87 Difference]: Start difference. First operand 121 states and 151 transitions. Second operand has 28 states, 28 states have (on average 3.392857142857143) internal successors, (95), 28 states have internal predecessors, (95), 19 states have call successors, (25), 1 states have call predecessors, (25), 11 states have return successors, (29), 12 states have call predecessors, (29), 19 states have call successors, (29) [2025-01-09 04:07:09,953 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-09 04:07:09,953 INFO L93 Difference]: Finished difference Result 254 states and 339 transitions. [2025-01-09 04:07:09,954 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2025-01-09 04:07:09,954 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 28 states have (on average 3.392857142857143) internal successors, (95), 28 states have internal predecessors, (95), 19 states have call successors, (25), 1 states have call predecessors, (25), 11 states have return successors, (29), 12 states have call predecessors, (29), 19 states have call successors, (29) Word has length 175 [2025-01-09 04:07:09,954 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-09 04:07:09,955 INFO L225 Difference]: With dead ends: 254 [2025-01-09 04:07:09,955 INFO L226 Difference]: Without dead ends: 141 [2025-01-09 04:07:09,956 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 384 GetRequests, 334 SyntacticMatches, 10 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 419 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=291, Invalid=1431, Unknown=0, NotChecked=0, Total=1722 [2025-01-09 04:07:09,956 INFO L435 NwaCegarLoop]: 33 mSDtfsCounter, 87 mSDsluCounter, 345 mSDsCounter, 0 mSdLazyCounter, 523 mSolverCounterSat, 69 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 94 SdHoareTripleChecker+Valid, 378 SdHoareTripleChecker+Invalid, 592 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 69 IncrementalHoareTripleChecker+Valid, 523 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2025-01-09 04:07:09,957 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [94 Valid, 378 Invalid, 592 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [69 Valid, 523 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2025-01-09 04:07:09,957 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 141 states. [2025-01-09 04:07:09,969 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 141 to 121. [2025-01-09 04:07:09,969 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 121 states, 85 states have (on average 1.1176470588235294) internal successors, (95), 82 states have internal predecessors, (95), 20 states have call successors, (20), 16 states have call predecessors, (20), 15 states have return successors, (29), 22 states have call predecessors, (29), 20 states have call successors, (29) [2025-01-09 04:07:09,970 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 121 states to 121 states and 144 transitions. [2025-01-09 04:07:09,970 INFO L78 Accepts]: Start accepts. Automaton has 121 states and 144 transitions. Word has length 175 [2025-01-09 04:07:09,970 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-09 04:07:09,970 INFO L471 AbstractCegarLoop]: Abstraction has 121 states and 144 transitions. [2025-01-09 04:07:09,970 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 28 states have (on average 3.392857142857143) internal successors, (95), 28 states have internal predecessors, (95), 19 states have call successors, (25), 1 states have call predecessors, (25), 11 states have return successors, (29), 12 states have call predecessors, (29), 19 states have call successors, (29) [2025-01-09 04:07:09,970 INFO L276 IsEmpty]: Start isEmpty. Operand 121 states and 144 transitions. [2025-01-09 04:07:09,971 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 176 [2025-01-09 04:07:09,971 INFO L210 NwaCegarLoop]: Found error trace [2025-01-09 04:07:09,971 INFO L218 NwaCegarLoop]: trace histogram [13, 13, 12, 12, 11, 10, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 4, 3, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-09 04:07:09,984 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Forceful destruction successful, exit code 0 [2025-01-09 04:07:10,171 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 04:07:10,172 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-01-09 04:07:10,172 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 04:07:10,172 INFO L85 PathProgramCache]: Analyzing trace with hash 357728110, now seen corresponding path program 12 times [2025-01-09 04:07:10,172 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 04:07:10,172 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [327786543] [2025-01-09 04:07:10,172 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2025-01-09 04:07:10,172 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 04:07:10,180 INFO L108 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE partitioned 175 statements into 11 equivalence classes. [2025-01-09 04:07:10,187 INFO L111 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) and asserted 52 of 175 statements. [2025-01-09 04:07:10,191 INFO L114 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2025-01-09 04:07:10,191 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 04:07:10,245 INFO L134 CoverageAnalysis]: Checked inductivity of 796 backedges. 165 proven. 2 refuted. 0 times theorem prover too weak. 629 trivial. 0 not checked. [2025-01-09 04:07:10,245 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-09 04:07:10,245 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [327786543] [2025-01-09 04:07:10,245 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [327786543] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-09 04:07:10,245 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1012159346] [2025-01-09 04:07:10,245 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2025-01-09 04:07:10,245 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 04:07:10,246 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-09 04:07:10,248 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 04:07:10,254 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 04:07:10,363 INFO L108 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE partitioned 175 statements into 11 equivalence classes. [2025-01-09 04:07:10,374 INFO L111 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) and asserted 52 of 175 statements. [2025-01-09 04:07:10,374 INFO L114 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2025-01-09 04:07:10,374 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 04:07:10,375 INFO L256 TraceCheckSpWp]: Trace formula consists of 134 conjuncts, 6 conjuncts are in the unsatisfiable core [2025-01-09 04:07:10,376 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-09 04:07:10,407 INFO L134 CoverageAnalysis]: Checked inductivity of 796 backedges. 163 proven. 4 refuted. 0 times theorem prover too weak. 629 trivial. 0 not checked. [2025-01-09 04:07:10,407 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-01-09 04:07:10,861 INFO L134 CoverageAnalysis]: Checked inductivity of 796 backedges. 163 proven. 4 refuted. 0 times theorem prover too weak. 629 trivial. 0 not checked. [2025-01-09 04:07:10,865 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1012159346] provided 0 perfect and 2 imperfect interpolant sequences [2025-01-09 04:07:10,865 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-01-09 04:07:10,866 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 11 [2025-01-09 04:07:10,866 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [461900229] [2025-01-09 04:07:10,866 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-01-09 04:07:10,866 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2025-01-09 04:07:10,866 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-09 04:07:10,866 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2025-01-09 04:07:10,866 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2025-01-09 04:07:10,866 INFO L87 Difference]: Start difference. First operand 121 states and 144 transitions. Second operand has 11 states, 11 states have (on average 4.0) internal successors, (44), 11 states have internal predecessors, (44), 2 states have call successors, (6), 1 states have call predecessors, (6), 5 states have return successors, (10), 3 states have call predecessors, (10), 2 states have call successors, (10) [2025-01-09 04:07:10,938 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-09 04:07:10,939 INFO L93 Difference]: Finished difference Result 124 states and 148 transitions. [2025-01-09 04:07:10,942 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2025-01-09 04:07:10,943 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 4.0) internal successors, (44), 11 states have internal predecessors, (44), 2 states have call successors, (6), 1 states have call predecessors, (6), 5 states have return successors, (10), 3 states have call predecessors, (10), 2 states have call successors, (10) Word has length 175 [2025-01-09 04:07:10,943 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-09 04:07:10,943 INFO L225 Difference]: With dead ends: 124 [2025-01-09 04:07:10,943 INFO L226 Difference]: Without dead ends: 0 [2025-01-09 04:07:10,944 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 359 GetRequests, 343 SyntacticMatches, 3 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=68, Invalid=142, Unknown=0, NotChecked=0, Total=210 [2025-01-09 04:07:10,948 INFO L435 NwaCegarLoop]: 23 mSDtfsCounter, 19 mSDsluCounter, 113 mSDsCounter, 0 mSdLazyCounter, 93 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 20 SdHoareTripleChecker+Valid, 136 SdHoareTripleChecker+Invalid, 112 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 93 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-01-09 04:07:10,948 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [20 Valid, 136 Invalid, 112 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 93 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-01-09 04:07:10,948 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2025-01-09 04:07:10,948 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2025-01-09 04:07:10,948 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-09 04:07:10,948 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2025-01-09 04:07:10,948 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 175 [2025-01-09 04:07:10,948 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-09 04:07:10,948 INFO L471 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2025-01-09 04:07:10,949 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 4.0) internal successors, (44), 11 states have internal predecessors, (44), 2 states have call successors, (6), 1 states have call predecessors, (6), 5 states have return successors, (10), 3 states have call predecessors, (10), 2 states have call successors, (10) [2025-01-09 04:07:10,949 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2025-01-09 04:07:10,949 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2025-01-09 04:07:10,951 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2025-01-09 04:07:10,958 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Forceful destruction successful, exit code 0 [2025-01-09 04:07:11,153 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 04:07:11,155 INFO L422 BasicCegarLoop]: Path program histogram: [12, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-09 04:07:11,162 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2025-01-09 04:07:40,321 INFO L170 ceAbstractionStarter]: Computing trace abstraction results [2025-01-09 04:07:40,327 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 09.01 04:07:40 BoogieIcfgContainer [2025-01-09 04:07:40,327 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2025-01-09 04:07:40,328 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2025-01-09 04:07:40,328 INFO L270 PluginConnector]: Initializing Witness Printer... [2025-01-09 04:07:40,328 INFO L274 PluginConnector]: Witness Printer initialized [2025-01-09 04:07:40,328 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.01 04:06:45" (3/4) ... [2025-01-09 04:07:40,330 INFO L146 WitnessPrinter]: Generating witness for correct program [2025-01-09 04:07:40,334 INFO L362 RCFGBacktranslator]: Ignoring RootEdge to procedure fibo2 [2025-01-09 04:07:40,334 INFO L362 RCFGBacktranslator]: Ignoring RootEdge to procedure fibo1 [2025-01-09 04:07:40,337 INFO L919 BoogieBacktranslator]: Reduced CFG by removing 11 nodes and edges [2025-01-09 04:07:40,337 INFO L919 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2025-01-09 04:07:40,337 INFO L919 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2025-01-09 04:07:40,337 INFO L919 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2025-01-09 04:07:40,392 INFO L149 WitnessManager]: Wrote witness to /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/witness.graphml [2025-01-09 04:07:40,392 INFO L149 WitnessManager]: Wrote witness to /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/witness.yml [2025-01-09 04:07:40,392 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2025-01-09 04:07:40,393 INFO L158 Benchmark]: Toolchain (without parser) took 55491.32ms. Allocated memory was 167.8MB in the beginning and 1.7GB in the end (delta: 1.5GB). Free memory was 133.8MB in the beginning and 1.3GB in the end (delta: -1.1GB). Peak memory consumption was 375.4MB. Max. memory is 16.1GB. [2025-01-09 04:07:40,394 INFO L158 Benchmark]: CDTParser took 0.17ms. Allocated memory is still 218.1MB. Free memory is still 133.5MB. There was no memory consumed. Max. memory is 16.1GB. [2025-01-09 04:07:40,394 INFO L158 Benchmark]: CACSL2BoogieTranslator took 155.51ms. Allocated memory is still 167.8MB. Free memory was 133.8MB in the beginning and 123.0MB in the end (delta: 10.8MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2025-01-09 04:07:40,394 INFO L158 Benchmark]: Boogie Procedure Inliner took 17.45ms. Allocated memory is still 167.8MB. Free memory was 123.0MB in the beginning and 121.9MB in the end (delta: 1.1MB). There was no memory consumed. Max. memory is 16.1GB. [2025-01-09 04:07:40,396 INFO L158 Benchmark]: Boogie Preprocessor took 25.02ms. Allocated memory is still 167.8MB. Free memory was 121.9MB in the beginning and 120.6MB in the end (delta: 1.3MB). There was no memory consumed. Max. memory is 16.1GB. [2025-01-09 04:07:40,396 INFO L158 Benchmark]: RCFGBuilder took 193.71ms. Allocated memory is still 167.8MB. Free memory was 120.6MB in the beginning and 110.4MB in the end (delta: 10.2MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. [2025-01-09 04:07:40,396 INFO L158 Benchmark]: TraceAbstraction took 55029.49ms. Allocated memory was 167.8MB in the beginning and 1.7GB in the end (delta: 1.5GB). Free memory was 109.8MB in the beginning and 1.3GB in the end (delta: -1.2GB). Peak memory consumption was 986.0MB. Max. memory is 16.1GB. [2025-01-09 04:07:40,397 INFO L158 Benchmark]: Witness Printer took 64.61ms. Allocated memory is still 1.7GB. Free memory was 1.3GB in the beginning and 1.3GB in the end (delta: 4.2MB). There was no memory consumed. Max. memory is 16.1GB. [2025-01-09 04:07:40,397 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.17ms. Allocated memory is still 218.1MB. Free memory is still 133.5MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 155.51ms. Allocated memory is still 167.8MB. Free memory was 133.8MB in the beginning and 123.0MB in the end (delta: 10.8MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 17.45ms. Allocated memory is still 167.8MB. Free memory was 123.0MB in the beginning and 121.9MB in the end (delta: 1.1MB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 25.02ms. Allocated memory is still 167.8MB. Free memory was 121.9MB in the beginning and 120.6MB in the end (delta: 1.3MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 193.71ms. Allocated memory is still 167.8MB. Free memory was 120.6MB in the beginning and 110.4MB in the end (delta: 10.2MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. * TraceAbstraction took 55029.49ms. Allocated memory was 167.8MB in the beginning and 1.7GB in the end (delta: 1.5GB). Free memory was 109.8MB in the beginning and 1.3GB in the end (delta: -1.2GB). Peak memory consumption was 986.0MB. Max. memory is 16.1GB. * Witness Printer took 64.61ms. Allocated memory is still 1.7GB. Free memory was 1.3GB in the beginning and 1.3GB in the end (delta: 4.2MB). There was no memory consumed. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 41]: a call to reach_error is unreachable For all program executions holds that a call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 3 procedures, 29 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 25.8s, OverallIterations: 20, TraceHistogramMax: 18, PathProgramHistogramMax: 12, EmptinessCheckTime: 0.0s, AutomataDifference: 4.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 700 SdHoareTripleChecker+Valid, 2.8s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 595 mSDsluCounter, 5722 SdHoareTripleChecker+Invalid, 2.3s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 5140 mSDsCounter, 555 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 5431 IncrementalHoareTripleChecker+Invalid, 5986 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 555 mSolverCounterUnsat, 582 mSDtfsCounter, 5431 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 5229 GetRequests, 4728 SyntacticMatches, 88 SemanticMatches, 413 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2128 ImplicationChecksByTransitivity, 3.6s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=209occurred in iteration=16, InterpolantAutomatonStates: 281, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.2s AutomataMinimizationTime, 20 MinimizatonAttempts, 272 StatesRemovedByMinimization, 19 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.2s SsaConstructionTime, 0.7s SatisfiabilityAnalysisTime, 15.7s InterpolantComputationTime, 4895 NumberOfCodeBlocks, 4095 NumberOfCodeBlocksAsserted, 132 NumberOfCheckSat, 7276 ConstructedInterpolants, 0 QuantifiedInterpolants, 12103 SizeOfPredicates, 60 NumberOfNonLiveVariables, 4747 ConjunctsInSsa, 289 ConjunctsInUnsatCore, 56 InterpolantComputations, 2 PerfectInterpolantSequences, 26278/32679 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available, ConComCheckerStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2025-01-09 04:07:40,412 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Ended with exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE