./Ultimate.py --spec ../sv-benchmarks/c/properties/no-overflow.prp --file ../sv-benchmarks/c/recursive/Ackermann04.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows 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/Ackermann04.c -s /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-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 ! overflow) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 85f83c4bcdce9397140788b204098e14e4fa25f5b66f064340f4aaa544fbb462 --- Real Ultimate output --- This is Ultimate 0.3.0-?-551b009-m [2025-01-10 02:29:33,316 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-01-10 02:29:33,366 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf [2025-01-10 02:29:33,369 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-01-10 02:29:33,369 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-01-10 02:29:33,391 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-01-10 02:29:33,393 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-01-10 02:29:33,393 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-01-10 02:29:33,394 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-01-10 02:29:33,394 INFO L153 SettingsManager]: * Use memory slicer=true [2025-01-10 02:29:33,395 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-01-10 02:29:33,395 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-01-10 02:29:33,395 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-01-10 02:29:33,396 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-01-10 02:29:33,396 INFO L153 SettingsManager]: * Use SBE=true [2025-01-10 02:29:33,396 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-01-10 02:29:33,396 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2025-01-10 02:29:33,396 INFO L153 SettingsManager]: * sizeof long=4 [2025-01-10 02:29:33,396 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-01-10 02:29:33,396 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-01-10 02:29:33,396 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-01-10 02:29:33,396 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2025-01-10 02:29:33,396 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-01-10 02:29:33,397 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2025-01-10 02:29:33,397 INFO L153 SettingsManager]: * Check absence of signed integer overflows=ASSERTandASSUME [2025-01-10 02:29:33,397 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2025-01-10 02:29:33,397 INFO L153 SettingsManager]: * sizeof long double=12 [2025-01-10 02:29:33,397 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2025-01-10 02:29:33,397 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-01-10 02:29:33,397 INFO L153 SettingsManager]: * Use constant arrays=true [2025-01-10 02:29:33,397 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-01-10 02:29:33,397 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-01-10 02:29:33,397 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-01-10 02:29:33,398 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-01-10 02:29:33,398 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-01-10 02:29:33,398 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2025-01-10 02:29:33,398 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-01-10 02:29:33,398 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-01-10 02:29:33,398 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-01-10 02:29:33,398 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-01-10 02:29:33,398 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-01-10 02:29:33,398 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-01-10 02:29:33,398 INFO L153 SettingsManager]: * Compute procedure contracts=false [2025-01-10 02:29:33,398 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2025-01-10 02:29:33,399 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-01-10 02:29:33,399 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2025-01-10 02:29:33,399 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2025-01-10 02:29:33,399 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-01-10 02:29:33,399 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-01-10 02:29:33,399 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-01-10 02:29:33,399 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 ! overflow) ) 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 -> 85f83c4bcdce9397140788b204098e14e4fa25f5b66f064340f4aaa544fbb462 [2025-01-10 02:29:33,646 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-01-10 02:29:33,654 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-01-10 02:29:33,656 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-01-10 02:29:33,657 INFO L270 PluginConnector]: Initializing CDTParser... [2025-01-10 02:29:33,658 INFO L274 PluginConnector]: CDTParser initialized [2025-01-10 02:29:33,658 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/recursive/Ackermann04.c [2025-01-10 02:29:34,767 INFO L533 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/56e246a18/a69bec7a9d534d02807f77a7d48191d2/FLAG63823046b [2025-01-10 02:29:34,962 INFO L384 CDTParser]: Found 1 translation units. [2025-01-10 02:29:34,963 INFO L180 CDTParser]: Scanning /storage/repos/ultimate-jdk21/releaseScripts/default/sv-benchmarks/c/recursive/Ackermann04.c [2025-01-10 02:29:34,991 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/56e246a18/a69bec7a9d534d02807f77a7d48191d2/FLAG63823046b [2025-01-10 02:29:35,006 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/56e246a18/a69bec7a9d534d02807f77a7d48191d2 [2025-01-10 02:29:35,008 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-01-10 02:29:35,009 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2025-01-10 02:29:35,010 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-01-10 02:29:35,010 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-01-10 02:29:35,014 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-01-10 02:29:35,015 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.01 02:29:35" (1/1) ... [2025-01-10 02:29:35,015 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@27f1c968 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 02:29:35, skipping insertion in model container [2025-01-10 02:29:35,016 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.01 02:29:35" (1/1) ... [2025-01-10 02:29:35,025 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-01-10 02:29:35,127 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-01-10 02:29:35,136 INFO L200 MainTranslator]: Completed pre-run [2025-01-10 02:29:35,148 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-01-10 02:29:35,161 INFO L204 MainTranslator]: Completed translation [2025-01-10 02:29:35,162 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 02:29:35 WrapperNode [2025-01-10 02:29:35,163 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-01-10 02:29:35,164 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-01-10 02:29:35,164 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-01-10 02:29:35,164 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-01-10 02:29:35,170 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 02:29:35" (1/1) ... [2025-01-10 02:29:35,176 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 02:29:35" (1/1) ... [2025-01-10 02:29:35,187 INFO L138 Inliner]: procedures = 13, calls = 12, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 34 [2025-01-10 02:29:35,188 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-01-10 02:29:35,189 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-01-10 02:29:35,189 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-01-10 02:29:35,189 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-01-10 02:29:35,195 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 02:29:35" (1/1) ... [2025-01-10 02:29:35,195 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 02:29:35" (1/1) ... [2025-01-10 02:29:35,196 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 02:29:35" (1/1) ... [2025-01-10 02:29:35,210 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]. [2025-01-10 02:29:35,210 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 02:29:35" (1/1) ... [2025-01-10 02:29:35,211 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 02:29:35" (1/1) ... [2025-01-10 02:29:35,212 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 02:29:35" (1/1) ... [2025-01-10 02:29:35,215 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 02:29:35" (1/1) ... [2025-01-10 02:29:35,217 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 02:29:35" (1/1) ... [2025-01-10 02:29:35,218 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 02:29:35" (1/1) ... [2025-01-10 02:29:35,220 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 02:29:35" (1/1) ... [2025-01-10 02:29:35,221 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-01-10 02:29:35,222 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2025-01-10 02:29:35,222 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2025-01-10 02:29:35,222 INFO L274 PluginConnector]: RCFGBuilder initialized [2025-01-10 02:29:35,222 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 02:29:35" (1/1) ... [2025-01-10 02:29:35,227 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-01-10 02:29:35,236 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-10 02:29:35,248 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) [2025-01-10 02:29:35,253 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 [2025-01-10 02:29:35,268 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2025-01-10 02:29:35,268 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-01-10 02:29:35,268 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-01-10 02:29:35,268 INFO L130 BoogieDeclarations]: Found specification of procedure ackermann [2025-01-10 02:29:35,268 INFO L138 BoogieDeclarations]: Found implementation of procedure ackermann [2025-01-10 02:29:35,268 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2025-01-10 02:29:35,310 INFO L234 CfgBuilder]: Building ICFG [2025-01-10 02:29:35,311 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2025-01-10 02:29:35,428 INFO L? ?]: Removed 21 outVars from TransFormulas that were not future-live. [2025-01-10 02:29:35,430 INFO L283 CfgBuilder]: Performing block encoding [2025-01-10 02:29:35,440 INFO L307 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-01-10 02:29:35,441 INFO L312 CfgBuilder]: Removed 0 assume(true) statements. [2025-01-10 02:29:35,442 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 02:29:35 BoogieIcfgContainer [2025-01-10 02:29:35,442 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2025-01-10 02:29:35,443 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2025-01-10 02:29:35,444 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2025-01-10 02:29:35,447 INFO L274 PluginConnector]: TraceAbstraction initialized [2025-01-10 02:29:35,447 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 10.01 02:29:35" (1/3) ... [2025-01-10 02:29:35,449 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@46c86abb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.01 02:29:35, skipping insertion in model container [2025-01-10 02:29:35,449 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 02:29:35" (2/3) ... [2025-01-10 02:29:35,449 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@46c86abb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.01 02:29:35, skipping insertion in model container [2025-01-10 02:29:35,449 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 02:29:35" (3/3) ... [2025-01-10 02:29:35,450 INFO L128 eAbstractionObserver]: Analyzing ICFG Ackermann04.c [2025-01-10 02:29:35,462 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2025-01-10 02:29:35,463 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG Ackermann04.c that has 2 procedures, 39 locations, 1 initial locations, 0 loop locations, and 8 error locations. [2025-01-10 02:29:35,506 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-01-10 02:29:35,515 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;@45f936fb, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-01-10 02:29:35,515 INFO L334 AbstractCegarLoop]: Starting to check reachability of 8 error locations. [2025-01-10 02:29:35,518 INFO L276 IsEmpty]: Start isEmpty. Operand has 39 states, 25 states have (on average 1.52) internal successors, (38), 33 states have internal predecessors, (38), 4 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2025-01-10 02:29:35,522 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2025-01-10 02:29:35,523 INFO L210 NwaCegarLoop]: Found error trace [2025-01-10 02:29:35,523 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2025-01-10 02:29:35,524 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ackermannErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ackermannErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ackermannErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ackermannErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 5 more)] === [2025-01-10 02:29:35,529 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-10 02:29:35,529 INFO L85 PathProgramCache]: Analyzing trace with hash 180823785, now seen corresponding path program 1 times [2025-01-10 02:29:35,535 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-10 02:29:35,536 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1068493162] [2025-01-10 02:29:35,536 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-10 02:29:35,536 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-10 02:29:35,581 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 8 statements into 1 equivalence classes. [2025-01-10 02:29:35,596 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 8 of 8 statements. [2025-01-10 02:29:35,597 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-10 02:29:35,597 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-10 02:29:35,687 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-10 02:29:35,687 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-10 02:29:35,688 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1068493162] [2025-01-10 02:29:35,688 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1068493162] provided 1 perfect and 0 imperfect interpolant sequences [2025-01-10 02:29:35,688 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-01-10 02:29:35,688 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-01-10 02:29:35,689 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1226687875] [2025-01-10 02:29:35,689 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-01-10 02:29:35,692 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-01-10 02:29:35,692 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-10 02:29:35,702 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-01-10 02:29:35,703 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2025-01-10 02:29:35,704 INFO L87 Difference]: Start difference. First operand has 39 states, 25 states have (on average 1.52) internal successors, (38), 33 states have internal predecessors, (38), 4 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) Second operand has 5 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 4 states have internal predecessors, (7), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-10 02:29:35,809 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-10 02:29:35,809 INFO L93 Difference]: Finished difference Result 71 states and 83 transitions. [2025-01-10 02:29:35,810 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-01-10 02:29:35,810 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 4 states have internal predecessors, (7), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8 [2025-01-10 02:29:35,811 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-10 02:29:35,814 INFO L225 Difference]: With dead ends: 71 [2025-01-10 02:29:35,815 INFO L226 Difference]: Without dead ends: 59 [2025-01-10 02:29:35,816 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2025-01-10 02:29:35,818 INFO L435 NwaCegarLoop]: 33 mSDtfsCounter, 36 mSDsluCounter, 86 mSDsCounter, 0 mSdLazyCounter, 70 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 38 SdHoareTripleChecker+Valid, 119 SdHoareTripleChecker+Invalid, 77 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 70 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-01-10 02:29:35,818 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [38 Valid, 119 Invalid, 77 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 70 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-01-10 02:29:35,827 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59 states. [2025-01-10 02:29:35,840 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59 to 51. [2025-01-10 02:29:35,842 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 51 states, 34 states have (on average 1.5294117647058822) internal successors, (52), 42 states have internal predecessors, (52), 7 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2025-01-10 02:29:35,850 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 65 transitions. [2025-01-10 02:29:35,851 INFO L78 Accepts]: Start accepts. Automaton has 51 states and 65 transitions. Word has length 8 [2025-01-10 02:29:35,851 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-10 02:29:35,851 INFO L471 AbstractCegarLoop]: Abstraction has 51 states and 65 transitions. [2025-01-10 02:29:35,851 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 4 states have internal predecessors, (7), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-10 02:29:35,851 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states and 65 transitions. [2025-01-10 02:29:35,852 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2025-01-10 02:29:35,852 INFO L210 NwaCegarLoop]: Found error trace [2025-01-10 02:29:35,852 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-10 02:29:35,852 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2025-01-10 02:29:35,852 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ackermannErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ackermannErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ackermannErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ackermannErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 5 more)] === [2025-01-10 02:29:35,852 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-10 02:29:35,852 INFO L85 PathProgramCache]: Analyzing trace with hash 1310575100, now seen corresponding path program 1 times [2025-01-10 02:29:35,852 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-10 02:29:35,852 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1679853826] [2025-01-10 02:29:35,852 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-10 02:29:35,853 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-10 02:29:35,859 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 9 statements into 1 equivalence classes. [2025-01-10 02:29:35,865 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 9 of 9 statements. [2025-01-10 02:29:35,865 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-10 02:29:35,865 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-10 02:29:35,918 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-10 02:29:35,918 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-10 02:29:35,919 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1679853826] [2025-01-10 02:29:35,919 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1679853826] provided 1 perfect and 0 imperfect interpolant sequences [2025-01-10 02:29:35,919 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-01-10 02:29:35,919 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-01-10 02:29:35,919 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1410990037] [2025-01-10 02:29:35,919 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-01-10 02:29:35,920 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-01-10 02:29:35,920 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-10 02:29:35,920 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-01-10 02:29:35,920 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2025-01-10 02:29:35,920 INFO L87 Difference]: Start difference. First operand 51 states and 65 transitions. Second operand has 5 states, 4 states have (on average 2.0) internal successors, (8), 4 states have internal predecessors, (8), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-10 02:29:35,993 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-10 02:29:35,994 INFO L93 Difference]: Finished difference Result 101 states and 129 transitions. [2025-01-10 02:29:35,994 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-01-10 02:29:35,994 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 2.0) internal successors, (8), 4 states have internal predecessors, (8), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 9 [2025-01-10 02:29:35,994 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-10 02:29:35,995 INFO L225 Difference]: With dead ends: 101 [2025-01-10 02:29:35,995 INFO L226 Difference]: Without dead ends: 93 [2025-01-10 02:29:35,996 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2025-01-10 02:29:35,996 INFO L435 NwaCegarLoop]: 29 mSDtfsCounter, 36 mSDsluCounter, 76 mSDsCounter, 0 mSdLazyCounter, 44 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 36 SdHoareTripleChecker+Valid, 105 SdHoareTripleChecker+Invalid, 52 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 44 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-01-10 02:29:35,997 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [36 Valid, 105 Invalid, 52 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 44 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-01-10 02:29:35,999 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 93 states. [2025-01-10 02:29:36,010 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 93 to 85. [2025-01-10 02:29:36,012 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 85 states, 61 states have (on average 1.5081967213114753) internal successors, (92), 70 states have internal predecessors, (92), 13 states have call successors, (13), 4 states have call predecessors, (13), 3 states have return successors, (10), 10 states have call predecessors, (10), 10 states have call successors, (10) [2025-01-10 02:29:36,014 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 85 states to 85 states and 115 transitions. [2025-01-10 02:29:36,015 INFO L78 Accepts]: Start accepts. Automaton has 85 states and 115 transitions. Word has length 9 [2025-01-10 02:29:36,015 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-10 02:29:36,015 INFO L471 AbstractCegarLoop]: Abstraction has 85 states and 115 transitions. [2025-01-10 02:29:36,015 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 2.0) internal successors, (8), 4 states have internal predecessors, (8), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-10 02:29:36,015 INFO L276 IsEmpty]: Start isEmpty. Operand 85 states and 115 transitions. [2025-01-10 02:29:36,015 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2025-01-10 02:29:36,015 INFO L210 NwaCegarLoop]: Found error trace [2025-01-10 02:29:36,015 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-10 02:29:36,015 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2025-01-10 02:29:36,015 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ackermannErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ackermannErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ackermannErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ackermannErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 5 more)] === [2025-01-10 02:29:36,016 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-10 02:29:36,016 INFO L85 PathProgramCache]: Analyzing trace with hash 1310570103, now seen corresponding path program 1 times [2025-01-10 02:29:36,016 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-10 02:29:36,016 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [124903624] [2025-01-10 02:29:36,016 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-10 02:29:36,016 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-10 02:29:36,020 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 9 statements into 1 equivalence classes. [2025-01-10 02:29:36,025 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 9 of 9 statements. [2025-01-10 02:29:36,025 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-10 02:29:36,025 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-10 02:29:36,066 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-10 02:29:36,066 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-10 02:29:36,066 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [124903624] [2025-01-10 02:29:36,067 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [124903624] provided 1 perfect and 0 imperfect interpolant sequences [2025-01-10 02:29:36,067 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-01-10 02:29:36,067 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-01-10 02:29:36,067 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [185836043] [2025-01-10 02:29:36,067 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-01-10 02:29:36,067 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-01-10 02:29:36,067 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-10 02:29:36,067 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-01-10 02:29:36,067 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2025-01-10 02:29:36,068 INFO L87 Difference]: Start difference. First operand 85 states and 115 transitions. Second operand has 5 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 4 states have internal predecessors, (8), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-10 02:29:36,151 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-10 02:29:36,151 INFO L93 Difference]: Finished difference Result 118 states and 157 transitions. [2025-01-10 02:29:36,152 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-01-10 02:29:36,152 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 4 states have internal predecessors, (8), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 9 [2025-01-10 02:29:36,152 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-10 02:29:36,153 INFO L225 Difference]: With dead ends: 118 [2025-01-10 02:29:36,153 INFO L226 Difference]: Without dead ends: 114 [2025-01-10 02:29:36,154 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2025-01-10 02:29:36,154 INFO L435 NwaCegarLoop]: 26 mSDtfsCounter, 34 mSDsluCounter, 71 mSDsCounter, 0 mSdLazyCounter, 52 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 35 SdHoareTripleChecker+Valid, 97 SdHoareTripleChecker+Invalid, 60 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 52 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-01-10 02:29:36,154 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [35 Valid, 97 Invalid, 60 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 52 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-01-10 02:29:36,155 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 114 states. [2025-01-10 02:29:36,169 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 114 to 102. [2025-01-10 02:29:36,172 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 102 states, 74 states have (on average 1.445945945945946) internal successors, (107), 83 states have internal predecessors, (107), 16 states have call successors, (16), 5 states have call predecessors, (16), 4 states have return successors, (13), 13 states have call predecessors, (13), 13 states have call successors, (13) [2025-01-10 02:29:36,173 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 102 states to 102 states and 136 transitions. [2025-01-10 02:29:36,174 INFO L78 Accepts]: Start accepts. Automaton has 102 states and 136 transitions. Word has length 9 [2025-01-10 02:29:36,174 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-10 02:29:36,174 INFO L471 AbstractCegarLoop]: Abstraction has 102 states and 136 transitions. [2025-01-10 02:29:36,174 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 4 states have internal predecessors, (8), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-10 02:29:36,174 INFO L276 IsEmpty]: Start isEmpty. Operand 102 states and 136 transitions. [2025-01-10 02:29:36,174 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2025-01-10 02:29:36,174 INFO L210 NwaCegarLoop]: Found error trace [2025-01-10 02:29:36,174 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-10 02:29:36,174 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2025-01-10 02:29:36,174 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ackermannErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ackermannErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ackermannErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ackermannErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 5 more)] === [2025-01-10 02:29:36,175 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-10 02:29:36,175 INFO L85 PathProgramCache]: Analyzing trace with hash 1973122508, now seen corresponding path program 1 times [2025-01-10 02:29:36,175 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-10 02:29:36,175 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [173037957] [2025-01-10 02:29:36,175 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-10 02:29:36,175 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-10 02:29:36,178 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 10 statements into 1 equivalence classes. [2025-01-10 02:29:36,182 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 10 of 10 statements. [2025-01-10 02:29:36,182 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-10 02:29:36,182 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-10 02:29:36,235 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-10 02:29:36,235 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-10 02:29:36,235 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [173037957] [2025-01-10 02:29:36,235 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [173037957] provided 1 perfect and 0 imperfect interpolant sequences [2025-01-10 02:29:36,235 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-01-10 02:29:36,235 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-01-10 02:29:36,235 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2111733890] [2025-01-10 02:29:36,235 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-01-10 02:29:36,235 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-01-10 02:29:36,235 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-10 02:29:36,236 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-01-10 02:29:36,236 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2025-01-10 02:29:36,236 INFO L87 Difference]: Start difference. First operand 102 states and 136 transitions. Second operand has 5 states, 4 states have (on average 2.25) internal successors, (9), 4 states have internal predecessors, (9), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-10 02:29:36,295 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-10 02:29:36,295 INFO L93 Difference]: Finished difference Result 110 states and 153 transitions. [2025-01-10 02:29:36,296 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-01-10 02:29:36,296 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 2.25) internal successors, (9), 4 states have internal predecessors, (9), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 10 [2025-01-10 02:29:36,296 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-10 02:29:36,297 INFO L225 Difference]: With dead ends: 110 [2025-01-10 02:29:36,297 INFO L226 Difference]: Without dead ends: 108 [2025-01-10 02:29:36,297 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2025-01-10 02:29:36,298 INFO L435 NwaCegarLoop]: 23 mSDtfsCounter, 35 mSDsluCounter, 31 mSDsCounter, 0 mSdLazyCounter, 38 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 35 SdHoareTripleChecker+Valid, 54 SdHoareTripleChecker+Invalid, 50 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 38 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-01-10 02:29:36,298 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [35 Valid, 54 Invalid, 50 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 38 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-01-10 02:29:36,301 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 108 states. [2025-01-10 02:29:36,314 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 108 to 100. [2025-01-10 02:29:36,315 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 100 states, 74 states have (on average 1.3108108108108107) internal successors, (97), 81 states have internal predecessors, (97), 16 states have call successors, (16), 5 states have call predecessors, (16), 4 states have return successors, (13), 13 states have call predecessors, (13), 13 states have call successors, (13) [2025-01-10 02:29:36,317 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 100 states to 100 states and 126 transitions. [2025-01-10 02:29:36,319 INFO L78 Accepts]: Start accepts. Automaton has 100 states and 126 transitions. Word has length 10 [2025-01-10 02:29:36,319 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-10 02:29:36,319 INFO L471 AbstractCegarLoop]: Abstraction has 100 states and 126 transitions. [2025-01-10 02:29:36,319 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 2.25) internal successors, (9), 4 states have internal predecessors, (9), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-10 02:29:36,319 INFO L276 IsEmpty]: Start isEmpty. Operand 100 states and 126 transitions. [2025-01-10 02:29:36,319 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2025-01-10 02:29:36,319 INFO L210 NwaCegarLoop]: Found error trace [2025-01-10 02:29:36,319 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-10 02:29:36,319 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2025-01-10 02:29:36,319 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ackermannErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ackermannErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ackermannErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ackermannErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 5 more)] === [2025-01-10 02:29:36,320 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-10 02:29:36,320 INFO L85 PathProgramCache]: Analyzing trace with hash -612398535, now seen corresponding path program 1 times [2025-01-10 02:29:36,320 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-10 02:29:36,320 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1241238959] [2025-01-10 02:29:36,320 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-10 02:29:36,320 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-10 02:29:36,324 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 15 statements into 1 equivalence classes. [2025-01-10 02:29:36,329 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 15 of 15 statements. [2025-01-10 02:29:36,329 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-10 02:29:36,329 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-10 02:29:36,373 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-10 02:29:36,373 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-10 02:29:36,374 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1241238959] [2025-01-10 02:29:36,374 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1241238959] provided 1 perfect and 0 imperfect interpolant sequences [2025-01-10 02:29:36,374 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-01-10 02:29:36,374 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-01-10 02:29:36,374 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [934198553] [2025-01-10 02:29:36,374 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-01-10 02:29:36,375 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-01-10 02:29:36,375 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-10 02:29:36,375 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-01-10 02:29:36,375 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-01-10 02:29:36,375 INFO L87 Difference]: Start difference. First operand 100 states and 126 transitions. Second operand has 4 states, 4 states have (on average 3.25) internal successors, (13), 3 states have internal predecessors, (13), 1 states have call successors, (2), 2 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-10 02:29:36,433 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-10 02:29:36,433 INFO L93 Difference]: Finished difference Result 170 states and 225 transitions. [2025-01-10 02:29:36,434 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-01-10 02:29:36,434 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 3.25) internal successors, (13), 3 states have internal predecessors, (13), 1 states have call successors, (2), 2 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 15 [2025-01-10 02:29:36,434 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-10 02:29:36,435 INFO L225 Difference]: With dead ends: 170 [2025-01-10 02:29:36,435 INFO L226 Difference]: Without dead ends: 99 [2025-01-10 02:29:36,437 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2025-01-10 02:29:36,438 INFO L435 NwaCegarLoop]: 39 mSDtfsCounter, 25 mSDsluCounter, 50 mSDsCounter, 0 mSdLazyCounter, 31 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 25 SdHoareTripleChecker+Valid, 89 SdHoareTripleChecker+Invalid, 35 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 31 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-01-10 02:29:36,439 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [25 Valid, 89 Invalid, 35 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 31 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-01-10 02:29:36,439 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 99 states. [2025-01-10 02:29:36,447 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 99 to 96. [2025-01-10 02:29:36,448 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 96 states, 71 states have (on average 1.295774647887324) internal successors, (92), 78 states have internal predecessors, (92), 15 states have call successors, (15), 5 states have call predecessors, (15), 4 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) [2025-01-10 02:29:36,448 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 96 states to 96 states and 119 transitions. [2025-01-10 02:29:36,448 INFO L78 Accepts]: Start accepts. Automaton has 96 states and 119 transitions. Word has length 15 [2025-01-10 02:29:36,448 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-10 02:29:36,448 INFO L471 AbstractCegarLoop]: Abstraction has 96 states and 119 transitions. [2025-01-10 02:29:36,449 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 3.25) internal successors, (13), 3 states have internal predecessors, (13), 1 states have call successors, (2), 2 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-10 02:29:36,449 INFO L276 IsEmpty]: Start isEmpty. Operand 96 states and 119 transitions. [2025-01-10 02:29:36,449 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2025-01-10 02:29:36,449 INFO L210 NwaCegarLoop]: Found error trace [2025-01-10 02:29:36,449 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-10 02:29:36,449 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2025-01-10 02:29:36,449 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ackermannErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ackermannErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ackermannErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ackermannErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 5 more)] === [2025-01-10 02:29:36,449 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-10 02:29:36,449 INFO L85 PathProgramCache]: Analyzing trace with hash -612398311, now seen corresponding path program 1 times [2025-01-10 02:29:36,449 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-10 02:29:36,449 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [808459073] [2025-01-10 02:29:36,449 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-10 02:29:36,450 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-10 02:29:36,453 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 15 statements into 1 equivalence classes. [2025-01-10 02:29:36,457 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 15 of 15 statements. [2025-01-10 02:29:36,460 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-10 02:29:36,460 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-10 02:29:36,540 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-10 02:29:36,540 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-10 02:29:36,540 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [808459073] [2025-01-10 02:29:36,541 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [808459073] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-10 02:29:36,541 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [146751568] [2025-01-10 02:29:36,541 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-10 02:29:36,541 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-10 02:29:36,541 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-10 02:29:36,543 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) [2025-01-10 02:29:36,544 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 [2025-01-10 02:29:36,565 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 15 statements into 1 equivalence classes. [2025-01-10 02:29:36,572 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 15 of 15 statements. [2025-01-10 02:29:36,572 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-10 02:29:36,572 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-10 02:29:36,573 INFO L256 TraceCheckSpWp]: Trace formula consists of 57 conjuncts, 6 conjuncts are in the unsatisfiable core [2025-01-10 02:29:36,575 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-10 02:29:36,630 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-10 02:29:36,631 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-01-10 02:29:36,683 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-10 02:29:36,684 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [146751568] provided 0 perfect and 2 imperfect interpolant sequences [2025-01-10 02:29:36,684 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-01-10 02:29:36,684 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 11 [2025-01-10 02:29:36,684 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2060188469] [2025-01-10 02:29:36,684 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-01-10 02:29:36,684 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2025-01-10 02:29:36,684 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-10 02:29:36,684 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2025-01-10 02:29:36,685 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=98, Unknown=0, NotChecked=0, Total=132 [2025-01-10 02:29:36,685 INFO L87 Difference]: Start difference. First operand 96 states and 119 transitions. Second operand has 12 states, 11 states have (on average 2.1818181818181817) internal successors, (24), 8 states have internal predecessors, (24), 4 states have call successors, (4), 4 states have call predecessors, (4), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-10 02:29:36,886 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-10 02:29:36,886 INFO L93 Difference]: Finished difference Result 276 states and 359 transitions. [2025-01-10 02:29:36,887 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2025-01-10 02:29:36,887 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 2.1818181818181817) internal successors, (24), 8 states have internal predecessors, (24), 4 states have call successors, (4), 4 states have call predecessors, (4), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 15 [2025-01-10 02:29:36,887 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-10 02:29:36,889 INFO L225 Difference]: With dead ends: 276 [2025-01-10 02:29:36,889 INFO L226 Difference]: Without dead ends: 274 [2025-01-10 02:29:36,889 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=68, Invalid=172, Unknown=0, NotChecked=0, Total=240 [2025-01-10 02:29:36,890 INFO L435 NwaCegarLoop]: 31 mSDtfsCounter, 215 mSDsluCounter, 175 mSDsCounter, 0 mSdLazyCounter, 166 mSolverCounterSat, 56 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 218 SdHoareTripleChecker+Valid, 206 SdHoareTripleChecker+Invalid, 222 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 56 IncrementalHoareTripleChecker+Valid, 166 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-01-10 02:29:36,890 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [218 Valid, 206 Invalid, 222 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [56 Valid, 166 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-01-10 02:29:36,891 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 274 states. [2025-01-10 02:29:36,911 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 274 to 236. [2025-01-10 02:29:36,911 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 236 states, 182 states have (on average 1.2637362637362637) internal successors, (230), 189 states have internal predecessors, (230), 36 states have call successors, (36), 13 states have call predecessors, (36), 12 states have return successors, (33), 33 states have call predecessors, (33), 33 states have call successors, (33) [2025-01-10 02:29:36,916 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 236 states to 236 states and 299 transitions. [2025-01-10 02:29:36,917 INFO L78 Accepts]: Start accepts. Automaton has 236 states and 299 transitions. Word has length 15 [2025-01-10 02:29:36,917 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-10 02:29:36,917 INFO L471 AbstractCegarLoop]: Abstraction has 236 states and 299 transitions. [2025-01-10 02:29:36,917 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 2.1818181818181817) internal successors, (24), 8 states have internal predecessors, (24), 4 states have call successors, (4), 4 states have call predecessors, (4), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-10 02:29:36,917 INFO L276 IsEmpty]: Start isEmpty. Operand 236 states and 299 transitions. [2025-01-10 02:29:36,918 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2025-01-10 02:29:36,918 INFO L210 NwaCegarLoop]: Found error trace [2025-01-10 02:29:36,918 INFO L218 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-10 02:29:36,924 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2025-01-10 02:29:37,123 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,2 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-10 02:29:37,123 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ackermannErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ackermannErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ackermannErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ackermannErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 5 more)] === [2025-01-10 02:29:37,124 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-10 02:29:37,124 INFO L85 PathProgramCache]: Analyzing trace with hash -600892461, now seen corresponding path program 1 times [2025-01-10 02:29:37,124 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-10 02:29:37,124 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [500937865] [2025-01-10 02:29:37,124 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-10 02:29:37,124 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-10 02:29:37,127 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 16 statements into 1 equivalence classes. [2025-01-10 02:29:37,134 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 16 of 16 statements. [2025-01-10 02:29:37,134 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-10 02:29:37,134 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-10 02:29:37,185 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-10 02:29:37,186 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-10 02:29:37,186 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [500937865] [2025-01-10 02:29:37,186 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [500937865] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-10 02:29:37,186 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1999665891] [2025-01-10 02:29:37,186 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-10 02:29:37,186 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-10 02:29:37,186 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-10 02:29:37,188 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) [2025-01-10 02:29:37,190 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 [2025-01-10 02:29:37,210 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 16 statements into 1 equivalence classes. [2025-01-10 02:29:37,219 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 16 of 16 statements. [2025-01-10 02:29:37,219 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-10 02:29:37,219 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-10 02:29:37,220 INFO L256 TraceCheckSpWp]: Trace formula consists of 58 conjuncts, 6 conjuncts are in the unsatisfiable core [2025-01-10 02:29:37,221 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-10 02:29:37,244 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-10 02:29:37,244 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-01-10 02:29:37,297 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-10 02:29:37,299 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1999665891] provided 0 perfect and 2 imperfect interpolant sequences [2025-01-10 02:29:37,299 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-01-10 02:29:37,299 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 11 [2025-01-10 02:29:37,299 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2045671631] [2025-01-10 02:29:37,299 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-01-10 02:29:37,299 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2025-01-10 02:29:37,300 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-10 02:29:37,300 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2025-01-10 02:29:37,300 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=98, Unknown=0, NotChecked=0, Total=132 [2025-01-10 02:29:37,300 INFO L87 Difference]: Start difference. First operand 236 states and 299 transitions. Second operand has 12 states, 9 states have (on average 2.7777777777777777) internal successors, (25), 8 states have internal predecessors, (25), 4 states have call successors, (4), 4 states have call predecessors, (4), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-10 02:29:37,541 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-10 02:29:37,542 INFO L93 Difference]: Finished difference Result 498 states and 669 transitions. [2025-01-10 02:29:37,542 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2025-01-10 02:29:37,543 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 9 states have (on average 2.7777777777777777) internal successors, (25), 8 states have internal predecessors, (25), 4 states have call successors, (4), 4 states have call predecessors, (4), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 16 [2025-01-10 02:29:37,543 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-10 02:29:37,546 INFO L225 Difference]: With dead ends: 498 [2025-01-10 02:29:37,548 INFO L226 Difference]: Without dead ends: 496 [2025-01-10 02:29:37,549 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=77, Invalid=195, Unknown=0, NotChecked=0, Total=272 [2025-01-10 02:29:37,549 INFO L435 NwaCegarLoop]: 23 mSDtfsCounter, 142 mSDsluCounter, 139 mSDsCounter, 0 mSdLazyCounter, 171 mSolverCounterSat, 38 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 147 SdHoareTripleChecker+Valid, 162 SdHoareTripleChecker+Invalid, 209 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 38 IncrementalHoareTripleChecker+Valid, 171 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-01-10 02:29:37,549 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [147 Valid, 162 Invalid, 209 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [38 Valid, 171 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-01-10 02:29:37,550 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 496 states. [2025-01-10 02:29:37,593 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 496 to 445. [2025-01-10 02:29:37,594 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 445 states, 347 states have (on average 1.2276657060518732) internal successors, (426), 354 states have internal predecessors, (426), 69 states have call successors, (69), 24 states have call predecessors, (69), 23 states have return successors, (66), 66 states have call predecessors, (66), 66 states have call successors, (66) [2025-01-10 02:29:37,597 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 445 states to 445 states and 561 transitions. [2025-01-10 02:29:37,597 INFO L78 Accepts]: Start accepts. Automaton has 445 states and 561 transitions. Word has length 16 [2025-01-10 02:29:37,598 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-10 02:29:37,598 INFO L471 AbstractCegarLoop]: Abstraction has 445 states and 561 transitions. [2025-01-10 02:29:37,598 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 9 states have (on average 2.7777777777777777) internal successors, (25), 8 states have internal predecessors, (25), 4 states have call successors, (4), 4 states have call predecessors, (4), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-10 02:29:37,598 INFO L276 IsEmpty]: Start isEmpty. Operand 445 states and 561 transitions. [2025-01-10 02:29:37,599 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2025-01-10 02:29:37,600 INFO L210 NwaCegarLoop]: Found error trace [2025-01-10 02:29:37,600 INFO L218 NwaCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-10 02:29:37,605 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2025-01-10 02:29:37,800 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,3 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-10 02:29:37,800 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ackermannErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ackermannErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ackermannErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ackermannErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 5 more)] === [2025-01-10 02:29:37,801 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-10 02:29:37,801 INFO L85 PathProgramCache]: Analyzing trace with hash 1979487198, now seen corresponding path program 1 times [2025-01-10 02:29:37,801 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-10 02:29:37,801 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1465561023] [2025-01-10 02:29:37,801 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-10 02:29:37,801 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-10 02:29:37,807 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 24 statements into 1 equivalence classes. [2025-01-10 02:29:37,837 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 24 of 24 statements. [2025-01-10 02:29:37,837 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-10 02:29:37,838 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-10 02:29:37,899 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 4 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2025-01-10 02:29:37,899 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-10 02:29:37,899 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1465561023] [2025-01-10 02:29:37,899 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1465561023] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-10 02:29:37,899 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1019277455] [2025-01-10 02:29:37,899 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-10 02:29:37,900 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-10 02:29:37,900 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-10 02:29:37,901 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) [2025-01-10 02:29:37,903 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 [2025-01-10 02:29:37,920 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 24 statements into 1 equivalence classes. [2025-01-10 02:29:37,928 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 24 of 24 statements. [2025-01-10 02:29:37,928 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-10 02:29:37,928 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-10 02:29:37,929 INFO L256 TraceCheckSpWp]: Trace formula consists of 79 conjuncts, 6 conjuncts are in the unsatisfiable core [2025-01-10 02:29:37,929 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-10 02:29:37,980 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2025-01-10 02:29:37,980 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-01-10 02:29:37,981 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1019277455] provided 1 perfect and 0 imperfect interpolant sequences [2025-01-10 02:29:37,981 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-01-10 02:29:37,981 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [7] total 12 [2025-01-10 02:29:37,981 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1215734270] [2025-01-10 02:29:37,981 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-01-10 02:29:37,981 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2025-01-10 02:29:37,982 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-10 02:29:37,982 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2025-01-10 02:29:37,982 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=128, Unknown=0, NotChecked=0, Total=156 [2025-01-10 02:29:37,983 INFO L87 Difference]: Start difference. First operand 445 states and 561 transitions. Second operand has 7 states, 6 states have (on average 3.1666666666666665) internal successors, (19), 6 states have internal predecessors, (19), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2025-01-10 02:29:38,127 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-10 02:29:38,127 INFO L93 Difference]: Finished difference Result 494 states and 650 transitions. [2025-01-10 02:29:38,127 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2025-01-10 02:29:38,127 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 3.1666666666666665) internal successors, (19), 6 states have internal predecessors, (19), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 24 [2025-01-10 02:29:38,127 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-10 02:29:38,130 INFO L225 Difference]: With dead ends: 494 [2025-01-10 02:29:38,130 INFO L226 Difference]: Without dead ends: 493 [2025-01-10 02:29:38,130 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=64, Invalid=278, Unknown=0, NotChecked=0, Total=342 [2025-01-10 02:29:38,133 INFO L435 NwaCegarLoop]: 38 mSDtfsCounter, 34 mSDsluCounter, 121 mSDsCounter, 0 mSdLazyCounter, 105 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 36 SdHoareTripleChecker+Valid, 159 SdHoareTripleChecker+Invalid, 116 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 105 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-01-10 02:29:38,133 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [36 Valid, 159 Invalid, 116 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 105 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-01-10 02:29:38,134 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 493 states. [2025-01-10 02:29:38,164 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 493 to 444. [2025-01-10 02:29:38,165 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 444 states, 347 states have (on average 1.2161383285302594) internal successors, (422), 353 states have internal predecessors, (422), 69 states have call successors, (69), 24 states have call predecessors, (69), 23 states have return successors, (66), 66 states have call predecessors, (66), 66 states have call successors, (66) [2025-01-10 02:29:38,168 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 444 states to 444 states and 557 transitions. [2025-01-10 02:29:38,169 INFO L78 Accepts]: Start accepts. Automaton has 444 states and 557 transitions. Word has length 24 [2025-01-10 02:29:38,169 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-10 02:29:38,169 INFO L471 AbstractCegarLoop]: Abstraction has 444 states and 557 transitions. [2025-01-10 02:29:38,169 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 3.1666666666666665) internal successors, (19), 6 states have internal predecessors, (19), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2025-01-10 02:29:38,169 INFO L276 IsEmpty]: Start isEmpty. Operand 444 states and 557 transitions. [2025-01-10 02:29:38,170 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2025-01-10 02:29:38,170 INFO L210 NwaCegarLoop]: Found error trace [2025-01-10 02:29:38,170 INFO L218 NwaCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-10 02:29:38,176 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2025-01-10 02:29:38,370 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,4 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-10 02:29:38,371 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ackermannErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ackermannErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ackermannErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ackermannErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 5 more)] === [2025-01-10 02:29:38,371 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-10 02:29:38,371 INFO L85 PathProgramCache]: Analyzing trace with hash 1234561058, now seen corresponding path program 1 times [2025-01-10 02:29:38,371 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-10 02:29:38,371 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [539678557] [2025-01-10 02:29:38,371 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-10 02:29:38,371 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-10 02:29:38,374 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 25 statements into 1 equivalence classes. [2025-01-10 02:29:38,378 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 25 of 25 statements. [2025-01-10 02:29:38,378 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-10 02:29:38,378 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-10 02:29:38,446 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 1 proven. 5 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2025-01-10 02:29:38,446 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-10 02:29:38,446 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [539678557] [2025-01-10 02:29:38,446 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [539678557] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-10 02:29:38,447 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1857075050] [2025-01-10 02:29:38,447 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-10 02:29:38,447 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-10 02:29:38,447 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-10 02:29:38,448 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) [2025-01-10 02:29:38,450 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 [2025-01-10 02:29:38,467 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 25 statements into 1 equivalence classes. [2025-01-10 02:29:38,474 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 25 of 25 statements. [2025-01-10 02:29:38,475 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-10 02:29:38,475 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-10 02:29:38,475 INFO L256 TraceCheckSpWp]: Trace formula consists of 80 conjuncts, 10 conjuncts are in the unsatisfiable core [2025-01-10 02:29:38,476 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-10 02:29:38,507 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 1 proven. 5 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2025-01-10 02:29:38,507 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-01-10 02:29:38,633 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 1 proven. 5 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2025-01-10 02:29:38,633 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1857075050] provided 0 perfect and 2 imperfect interpolant sequences [2025-01-10 02:29:38,633 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-01-10 02:29:38,633 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 13 [2025-01-10 02:29:38,633 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1729070887] [2025-01-10 02:29:38,633 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-01-10 02:29:38,633 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2025-01-10 02:29:38,633 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-10 02:29:38,634 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2025-01-10 02:29:38,634 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=150, Unknown=0, NotChecked=0, Total=182 [2025-01-10 02:29:38,634 INFO L87 Difference]: Start difference. First operand 444 states and 557 transitions. Second operand has 14 states, 11 states have (on average 3.3636363636363638) internal successors, (37), 12 states have internal predecessors, (37), 6 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2025-01-10 02:29:38,834 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-10 02:29:38,834 INFO L93 Difference]: Finished difference Result 765 states and 1085 transitions. [2025-01-10 02:29:38,835 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2025-01-10 02:29:38,835 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 11 states have (on average 3.3636363636363638) internal successors, (37), 12 states have internal predecessors, (37), 6 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 25 [2025-01-10 02:29:38,835 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-10 02:29:38,840 INFO L225 Difference]: With dead ends: 765 [2025-01-10 02:29:38,840 INFO L226 Difference]: Without dead ends: 763 [2025-01-10 02:29:38,841 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 61 GetRequests, 44 SyntacticMatches, 1 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=61, Invalid=245, Unknown=0, NotChecked=0, Total=306 [2025-01-10 02:29:38,842 INFO L435 NwaCegarLoop]: 20 mSDtfsCounter, 80 mSDsluCounter, 113 mSDsCounter, 0 mSdLazyCounter, 165 mSolverCounterSat, 50 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 86 SdHoareTripleChecker+Valid, 133 SdHoareTripleChecker+Invalid, 215 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 50 IncrementalHoareTripleChecker+Valid, 165 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-01-10 02:29:38,842 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [86 Valid, 133 Invalid, 215 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [50 Valid, 165 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-01-10 02:29:38,843 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 763 states. [2025-01-10 02:29:38,893 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 763 to 655. [2025-01-10 02:29:38,895 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 655 states, 491 states have (on average 1.19959266802444) internal successors, (589), 512 states have internal predecessors, (589), 114 states have call successors, (114), 31 states have call predecessors, (114), 45 states have return successors, (134), 111 states have call predecessors, (134), 110 states have call successors, (134) [2025-01-10 02:29:38,900 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 655 states to 655 states and 837 transitions. [2025-01-10 02:29:38,901 INFO L78 Accepts]: Start accepts. Automaton has 655 states and 837 transitions. Word has length 25 [2025-01-10 02:29:38,901 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-10 02:29:38,902 INFO L471 AbstractCegarLoop]: Abstraction has 655 states and 837 transitions. [2025-01-10 02:29:38,902 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 11 states have (on average 3.3636363636363638) internal successors, (37), 12 states have internal predecessors, (37), 6 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2025-01-10 02:29:38,902 INFO L276 IsEmpty]: Start isEmpty. Operand 655 states and 837 transitions. [2025-01-10 02:29:38,903 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2025-01-10 02:29:38,904 INFO L210 NwaCegarLoop]: Found error trace [2025-01-10 02:29:38,904 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1] [2025-01-10 02:29:38,910 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2025-01-10 02:29:39,104 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,SelfDestructingSolverStorable8 [2025-01-10 02:29:39,104 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ackermannErr6ASSERT_VIOLATIONINTEGER_OVERFLOW === [ackermannErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ackermannErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ackermannErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 5 more)] === [2025-01-10 02:29:39,105 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-10 02:29:39,105 INFO L85 PathProgramCache]: Analyzing trace with hash -2137182870, now seen corresponding path program 1 times [2025-01-10 02:29:39,106 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-10 02:29:39,106 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [536828207] [2025-01-10 02:29:39,106 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-10 02:29:39,106 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-10 02:29:39,109 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 27 statements into 1 equivalence classes. [2025-01-10 02:29:39,115 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 27 of 27 statements. [2025-01-10 02:29:39,115 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-10 02:29:39,115 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-10 02:29:39,179 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-10 02:29:39,179 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-10 02:29:39,179 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [536828207] [2025-01-10 02:29:39,180 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [536828207] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-10 02:29:39,180 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [595198448] [2025-01-10 02:29:39,180 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-10 02:29:39,180 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-10 02:29:39,180 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-10 02:29:39,183 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) [2025-01-10 02:29:39,184 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 [2025-01-10 02:29:39,204 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 27 statements into 1 equivalence classes. [2025-01-10 02:29:39,211 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 27 of 27 statements. [2025-01-10 02:29:39,212 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-10 02:29:39,212 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-10 02:29:39,212 INFO L256 TraceCheckSpWp]: Trace formula consists of 76 conjuncts, 8 conjuncts are in the unsatisfiable core [2025-01-10 02:29:39,214 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-10 02:29:39,245 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-10 02:29:39,246 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-01-10 02:29:39,326 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-10 02:29:39,326 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [595198448] provided 0 perfect and 2 imperfect interpolant sequences [2025-01-10 02:29:39,327 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-01-10 02:29:39,327 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 15 [2025-01-10 02:29:39,327 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1226208553] [2025-01-10 02:29:39,327 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-01-10 02:29:39,327 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2025-01-10 02:29:39,327 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-10 02:29:39,327 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2025-01-10 02:29:39,327 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=60, Invalid=180, Unknown=0, NotChecked=0, Total=240 [2025-01-10 02:29:39,328 INFO L87 Difference]: Start difference. First operand 655 states and 837 transitions. Second operand has 16 states, 13 states have (on average 3.4615384615384617) internal successors, (45), 10 states have internal predecessors, (45), 6 states have call successors, (6), 6 states have call predecessors, (6), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-10 02:29:39,594 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-10 02:29:39,595 INFO L93 Difference]: Finished difference Result 1017 states and 1385 transitions. [2025-01-10 02:29:39,595 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2025-01-10 02:29:39,595 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 13 states have (on average 3.4615384615384617) internal successors, (45), 10 states have internal predecessors, (45), 6 states have call successors, (6), 6 states have call predecessors, (6), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 27 [2025-01-10 02:29:39,596 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-10 02:29:39,601 INFO L225 Difference]: With dead ends: 1017 [2025-01-10 02:29:39,601 INFO L226 Difference]: Without dead ends: 1016 [2025-01-10 02:29:39,602 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 66 GetRequests, 46 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 60 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=129, Invalid=333, Unknown=0, NotChecked=0, Total=462 [2025-01-10 02:29:39,602 INFO L435 NwaCegarLoop]: 25 mSDtfsCounter, 361 mSDsluCounter, 170 mSDsCounter, 0 mSdLazyCounter, 194 mSolverCounterSat, 74 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 368 SdHoareTripleChecker+Valid, 195 SdHoareTripleChecker+Invalid, 268 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 74 IncrementalHoareTripleChecker+Valid, 194 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2025-01-10 02:29:39,602 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [368 Valid, 195 Invalid, 268 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [74 Valid, 194 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2025-01-10 02:29:39,603 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1016 states. [2025-01-10 02:29:39,669 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1016 to 931. [2025-01-10 02:29:39,671 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 931 states, 695 states have (on average 1.1697841726618705) internal successors, (813), 728 states have internal predecessors, (813), 162 states have call successors, (162), 43 states have call predecessors, (162), 69 states have return successors, (194), 159 states have call predecessors, (194), 158 states have call successors, (194) [2025-01-10 02:29:39,675 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 931 states to 931 states and 1169 transitions. [2025-01-10 02:29:39,676 INFO L78 Accepts]: Start accepts. Automaton has 931 states and 1169 transitions. Word has length 27 [2025-01-10 02:29:39,676 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-10 02:29:39,676 INFO L471 AbstractCegarLoop]: Abstraction has 931 states and 1169 transitions. [2025-01-10 02:29:39,676 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 13 states have (on average 3.4615384615384617) internal successors, (45), 10 states have internal predecessors, (45), 6 states have call successors, (6), 6 states have call predecessors, (6), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-10 02:29:39,676 INFO L276 IsEmpty]: Start isEmpty. Operand 931 states and 1169 transitions. [2025-01-10 02:29:39,677 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2025-01-10 02:29:39,677 INFO L210 NwaCegarLoop]: Found error trace [2025-01-10 02:29:39,677 INFO L218 NwaCegarLoop]: trace histogram [3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-10 02:29:39,682 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2025-01-10 02:29:39,877 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2025-01-10 02:29:39,878 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ackermannErr6ASSERT_VIOLATIONINTEGER_OVERFLOW === [ackermannErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ackermannErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ackermannErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 5 more)] === [2025-01-10 02:29:39,878 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-10 02:29:39,878 INFO L85 PathProgramCache]: Analyzing trace with hash 1007222953, now seen corresponding path program 1 times [2025-01-10 02:29:39,878 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-10 02:29:39,878 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [790660881] [2025-01-10 02:29:39,878 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-10 02:29:39,878 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-10 02:29:39,881 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 27 statements into 1 equivalence classes. [2025-01-10 02:29:39,883 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 27 of 27 statements. [2025-01-10 02:29:39,883 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-10 02:29:39,883 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-10 02:29:39,931 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2025-01-10 02:29:39,931 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-10 02:29:39,931 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [790660881] [2025-01-10 02:29:39,932 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [790660881] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-10 02:29:39,932 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [126286443] [2025-01-10 02:29:39,932 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-10 02:29:39,932 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-10 02:29:39,932 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-10 02:29:39,935 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) [2025-01-10 02:29:39,936 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 [2025-01-10 02:29:39,953 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 27 statements into 1 equivalence classes. [2025-01-10 02:29:39,962 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 27 of 27 statements. [2025-01-10 02:29:39,962 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-10 02:29:39,962 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-10 02:29:39,963 INFO L256 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 10 conjuncts are in the unsatisfiable core [2025-01-10 02:29:39,964 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-10 02:29:39,997 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2025-01-10 02:29:39,997 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-01-10 02:29:40,120 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2025-01-10 02:29:40,120 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [126286443] provided 0 perfect and 2 imperfect interpolant sequences [2025-01-10 02:29:40,120 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-01-10 02:29:40,120 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 13 [2025-01-10 02:29:40,121 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1514835263] [2025-01-10 02:29:40,121 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-01-10 02:29:40,121 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2025-01-10 02:29:40,121 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-10 02:29:40,121 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2025-01-10 02:29:40,122 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=149, Unknown=0, NotChecked=0, Total=182 [2025-01-10 02:29:40,122 INFO L87 Difference]: Start difference. First operand 931 states and 1169 transitions. Second operand has 14 states, 11 states have (on average 3.0) internal successors, (33), 12 states have internal predecessors, (33), 6 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2025-01-10 02:29:40,428 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-10 02:29:40,428 INFO L93 Difference]: Finished difference Result 1360 states and 1921 transitions. [2025-01-10 02:29:40,429 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2025-01-10 02:29:40,429 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 11 states have (on average 3.0) internal successors, (33), 12 states have internal predecessors, (33), 6 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 27 [2025-01-10 02:29:40,429 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-10 02:29:40,435 INFO L225 Difference]: With dead ends: 1360 [2025-01-10 02:29:40,435 INFO L226 Difference]: Without dead ends: 1348 [2025-01-10 02:29:40,436 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 69 GetRequests, 48 SyntacticMatches, 1 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 42 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=99, Invalid=363, Unknown=0, NotChecked=0, Total=462 [2025-01-10 02:29:40,437 INFO L435 NwaCegarLoop]: 21 mSDtfsCounter, 135 mSDsluCounter, 138 mSDsCounter, 0 mSdLazyCounter, 249 mSolverCounterSat, 75 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 139 SdHoareTripleChecker+Valid, 159 SdHoareTripleChecker+Invalid, 324 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 75 IncrementalHoareTripleChecker+Valid, 249 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2025-01-10 02:29:40,437 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [139 Valid, 159 Invalid, 324 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [75 Valid, 249 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2025-01-10 02:29:40,438 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1348 states. [2025-01-10 02:29:40,499 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1348 to 1161. [2025-01-10 02:29:40,501 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1161 states, 863 states have (on average 1.1657010428736965) internal successors, (1006), 903 states have internal predecessors, (1006), 209 states have call successors, (209), 53 states have call predecessors, (209), 84 states have return successors, (255), 204 states have call predecessors, (255), 202 states have call successors, (255) [2025-01-10 02:29:40,506 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1161 states to 1161 states and 1470 transitions. [2025-01-10 02:29:40,507 INFO L78 Accepts]: Start accepts. Automaton has 1161 states and 1470 transitions. Word has length 27 [2025-01-10 02:29:40,507 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-10 02:29:40,507 INFO L471 AbstractCegarLoop]: Abstraction has 1161 states and 1470 transitions. [2025-01-10 02:29:40,507 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 11 states have (on average 3.0) internal successors, (33), 12 states have internal predecessors, (33), 6 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2025-01-10 02:29:40,507 INFO L276 IsEmpty]: Start isEmpty. Operand 1161 states and 1470 transitions. [2025-01-10 02:29:40,509 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2025-01-10 02:29:40,509 INFO L210 NwaCegarLoop]: Found error trace [2025-01-10 02:29:40,509 INFO L218 NwaCegarLoop]: trace histogram [4, 2, 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] [2025-01-10 02:29:40,514 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2025-01-10 02:29:40,712 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,SelfDestructingSolverStorable10 [2025-01-10 02:29:40,713 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ackermannErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ackermannErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ackermannErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ackermannErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 5 more)] === [2025-01-10 02:29:40,713 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-10 02:29:40,713 INFO L85 PathProgramCache]: Analyzing trace with hash 1878013265, now seen corresponding path program 1 times [2025-01-10 02:29:40,713 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-10 02:29:40,713 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1479816184] [2025-01-10 02:29:40,713 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-10 02:29:40,713 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-10 02:29:40,717 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 34 statements into 1 equivalence classes. [2025-01-10 02:29:40,721 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 34 of 34 statements. [2025-01-10 02:29:40,721 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-10 02:29:40,721 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-10 02:29:40,801 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 9 proven. 3 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2025-01-10 02:29:40,801 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-10 02:29:40,801 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1479816184] [2025-01-10 02:29:40,801 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1479816184] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-10 02:29:40,801 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1585563539] [2025-01-10 02:29:40,801 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-10 02:29:40,801 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-10 02:29:40,801 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-10 02:29:40,803 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) [2025-01-10 02:29:40,805 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 [2025-01-10 02:29:40,825 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 34 statements into 1 equivalence classes. [2025-01-10 02:29:40,834 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 34 of 34 statements. [2025-01-10 02:29:40,834 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-10 02:29:40,834 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-10 02:29:40,835 INFO L256 TraceCheckSpWp]: Trace formula consists of 102 conjuncts, 9 conjuncts are in the unsatisfiable core [2025-01-10 02:29:40,835 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-10 02:29:40,868 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 7 proven. 5 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2025-01-10 02:29:40,868 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-01-10 02:29:41,014 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 9 proven. 3 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2025-01-10 02:29:41,014 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1585563539] provided 0 perfect and 2 imperfect interpolant sequences [2025-01-10 02:29:41,014 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-01-10 02:29:41,015 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 17 [2025-01-10 02:29:41,015 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1922915207] [2025-01-10 02:29:41,015 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-01-10 02:29:41,015 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2025-01-10 02:29:41,015 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-10 02:29:41,015 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2025-01-10 02:29:41,016 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=260, Unknown=0, NotChecked=0, Total=306 [2025-01-10 02:29:41,016 INFO L87 Difference]: Start difference. First operand 1161 states and 1470 transitions. Second operand has 18 states, 17 states have (on average 2.5294117647058822) internal successors, (43), 14 states have internal predecessors, (43), 3 states have call successors, (5), 3 states have call predecessors, (5), 5 states have return successors, (5), 4 states have call predecessors, (5), 1 states have call successors, (5) [2025-01-10 02:29:41,486 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-10 02:29:41,486 INFO L93 Difference]: Finished difference Result 2210 states and 3667 transitions. [2025-01-10 02:29:41,487 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2025-01-10 02:29:41,487 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 17 states have (on average 2.5294117647058822) internal successors, (43), 14 states have internal predecessors, (43), 3 states have call successors, (5), 3 states have call predecessors, (5), 5 states have return successors, (5), 4 states have call predecessors, (5), 1 states have call successors, (5) Word has length 34 [2025-01-10 02:29:41,487 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-10 02:29:41,501 INFO L225 Difference]: With dead ends: 2210 [2025-01-10 02:29:41,502 INFO L226 Difference]: Without dead ends: 2172 [2025-01-10 02:29:41,503 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 88 GetRequests, 61 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 96 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=140, Invalid=672, Unknown=0, NotChecked=0, Total=812 [2025-01-10 02:29:41,503 INFO L435 NwaCegarLoop]: 27 mSDtfsCounter, 84 mSDsluCounter, 188 mSDsCounter, 0 mSdLazyCounter, 333 mSolverCounterSat, 110 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 84 SdHoareTripleChecker+Valid, 215 SdHoareTripleChecker+Invalid, 443 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 110 IncrementalHoareTripleChecker+Valid, 333 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2025-01-10 02:29:41,504 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [84 Valid, 215 Invalid, 443 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [110 Valid, 333 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2025-01-10 02:29:41,505 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2172 states. [2025-01-10 02:29:41,652 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2172 to 1777. [2025-01-10 02:29:41,655 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1777 states, 1272 states have (on average 1.1517295597484276) internal successors, (1465), 1339 states have internal predecessors, (1465), 338 states have call successors, (338), 73 states have call predecessors, (338), 162 states have return successors, (744), 364 states have call predecessors, (744), 323 states have call successors, (744) [2025-01-10 02:29:41,663 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1777 states to 1777 states and 2547 transitions. [2025-01-10 02:29:41,665 INFO L78 Accepts]: Start accepts. Automaton has 1777 states and 2547 transitions. Word has length 34 [2025-01-10 02:29:41,666 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-10 02:29:41,666 INFO L471 AbstractCegarLoop]: Abstraction has 1777 states and 2547 transitions. [2025-01-10 02:29:41,666 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 17 states have (on average 2.5294117647058822) internal successors, (43), 14 states have internal predecessors, (43), 3 states have call successors, (5), 3 states have call predecessors, (5), 5 states have return successors, (5), 4 states have call predecessors, (5), 1 states have call successors, (5) [2025-01-10 02:29:41,666 INFO L276 IsEmpty]: Start isEmpty. Operand 1777 states and 2547 transitions. [2025-01-10 02:29:41,680 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2025-01-10 02:29:41,680 INFO L210 NwaCegarLoop]: Found error trace [2025-01-10 02:29:41,680 INFO L218 NwaCegarLoop]: trace histogram [4, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-10 02:29:41,687 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2025-01-10 02:29:41,880 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,8 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-10 02:29:41,881 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ackermannErr6ASSERT_VIOLATIONINTEGER_OVERFLOW === [ackermannErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ackermannErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ackermannErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 5 more)] === [2025-01-10 02:29:41,881 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-10 02:29:41,882 INFO L85 PathProgramCache]: Analyzing trace with hash 889503256, now seen corresponding path program 1 times [2025-01-10 02:29:41,882 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-10 02:29:41,882 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [978298409] [2025-01-10 02:29:41,882 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-10 02:29:41,882 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-10 02:29:41,887 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 36 statements into 1 equivalence classes. [2025-01-10 02:29:41,890 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 36 of 36 statements. [2025-01-10 02:29:41,891 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-10 02:29:41,891 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-10 02:29:41,965 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 14 proven. 1 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2025-01-10 02:29:41,966 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-10 02:29:41,966 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [978298409] [2025-01-10 02:29:41,966 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [978298409] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-10 02:29:41,966 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1142527692] [2025-01-10 02:29:41,966 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-10 02:29:41,966 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-10 02:29:41,966 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-10 02:29:41,968 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) [2025-01-10 02:29:41,970 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 [2025-01-10 02:29:41,988 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 36 statements into 1 equivalence classes. [2025-01-10 02:29:41,996 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 36 of 36 statements. [2025-01-10 02:29:41,996 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-10 02:29:41,996 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-10 02:29:41,997 INFO L256 TraceCheckSpWp]: Trace formula consists of 103 conjuncts, 9 conjuncts are in the unsatisfiable core [2025-01-10 02:29:41,997 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-10 02:29:42,031 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 12 proven. 3 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2025-01-10 02:29:42,031 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-01-10 02:29:42,174 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2025-01-10 02:29:42,175 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1142527692] provided 1 perfect and 1 imperfect interpolant sequences [2025-01-10 02:29:42,175 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2025-01-10 02:29:42,175 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [8, 8] total 17 [2025-01-10 02:29:42,175 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1728897004] [2025-01-10 02:29:42,176 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-01-10 02:29:42,176 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2025-01-10 02:29:42,176 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-10 02:29:42,176 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2025-01-10 02:29:42,176 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=258, Unknown=0, NotChecked=0, Total=306 [2025-01-10 02:29:42,177 INFO L87 Difference]: Start difference. First operand 1777 states and 2547 transitions. Second operand has 9 states, 8 states have (on average 3.5) internal successors, (28), 7 states have internal predecessors, (28), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2025-01-10 02:29:42,453 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-10 02:29:42,453 INFO L93 Difference]: Finished difference Result 2034 states and 3188 transitions. [2025-01-10 02:29:42,454 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2025-01-10 02:29:42,454 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.5) internal successors, (28), 7 states have internal predecessors, (28), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) Word has length 36 [2025-01-10 02:29:42,454 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-10 02:29:42,463 INFO L225 Difference]: With dead ends: 2034 [2025-01-10 02:29:42,463 INFO L226 Difference]: Without dead ends: 2033 [2025-01-10 02:29:42,464 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 84 GetRequests, 63 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 69 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=75, Invalid=431, Unknown=0, NotChecked=0, Total=506 [2025-01-10 02:29:42,464 INFO L435 NwaCegarLoop]: 37 mSDtfsCounter, 36 mSDsluCounter, 169 mSDsCounter, 0 mSdLazyCounter, 217 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 44 SdHoareTripleChecker+Valid, 206 SdHoareTripleChecker+Invalid, 234 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 217 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-01-10 02:29:42,464 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [44 Valid, 206 Invalid, 234 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 217 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-01-10 02:29:42,466 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2033 states. [2025-01-10 02:29:42,590 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2033 to 1785. [2025-01-10 02:29:42,592 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1785 states, 1280 states have (on average 1.1484375) internal successors, (1470), 1343 states have internal predecessors, (1470), 342 states have call successors, (342), 73 states have call predecessors, (342), 158 states have return successors, (616), 368 states have call predecessors, (616), 327 states have call successors, (616) [2025-01-10 02:29:42,598 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1785 states to 1785 states and 2428 transitions. [2025-01-10 02:29:42,599 INFO L78 Accepts]: Start accepts. Automaton has 1785 states and 2428 transitions. Word has length 36 [2025-01-10 02:29:42,599 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-10 02:29:42,599 INFO L471 AbstractCegarLoop]: Abstraction has 1785 states and 2428 transitions. [2025-01-10 02:29:42,600 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 3.5) internal successors, (28), 7 states have internal predecessors, (28), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2025-01-10 02:29:42,600 INFO L276 IsEmpty]: Start isEmpty. Operand 1785 states and 2428 transitions. [2025-01-10 02:29:42,601 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2025-01-10 02:29:42,601 INFO L210 NwaCegarLoop]: Found error trace [2025-01-10 02:29:42,601 INFO L218 NwaCegarLoop]: trace histogram [5, 4, 4, 4, 4, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-10 02:29:42,606 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2025-01-10 02:29:42,801 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,9 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-10 02:29:42,801 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ackermannErr6ASSERT_VIOLATIONINTEGER_OVERFLOW === [ackermannErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ackermannErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ackermannErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 5 more)] === [2025-01-10 02:29:42,802 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-10 02:29:42,802 INFO L85 PathProgramCache]: Analyzing trace with hash 791091541, now seen corresponding path program 2 times [2025-01-10 02:29:42,802 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-10 02:29:42,802 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1218047257] [2025-01-10 02:29:42,802 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-01-10 02:29:42,802 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-10 02:29:42,805 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 43 statements into 2 equivalence classes. [2025-01-10 02:29:42,814 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 43 of 43 statements. [2025-01-10 02:29:42,814 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-01-10 02:29:42,814 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-10 02:29:42,900 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 2 proven. 40 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2025-01-10 02:29:42,900 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-10 02:29:42,900 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1218047257] [2025-01-10 02:29:42,900 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1218047257] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-10 02:29:42,900 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [223331156] [2025-01-10 02:29:42,900 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-01-10 02:29:42,900 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-10 02:29:42,900 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-10 02:29:42,902 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) [2025-01-10 02:29:42,911 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 [2025-01-10 02:29:42,930 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 43 statements into 2 equivalence classes. [2025-01-10 02:29:42,939 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 43 of 43 statements. [2025-01-10 02:29:42,939 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-01-10 02:29:42,939 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-10 02:29:42,940 INFO L256 TraceCheckSpWp]: Trace formula consists of 113 conjuncts, 14 conjuncts are in the unsatisfiable core [2025-01-10 02:29:42,941 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-10 02:29:42,993 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 2 proven. 40 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2025-01-10 02:29:42,993 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-01-10 02:29:43,172 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 4 proven. 38 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2025-01-10 02:29:43,173 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [223331156] provided 0 perfect and 2 imperfect interpolant sequences [2025-01-10 02:29:43,173 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-01-10 02:29:43,173 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 21 [2025-01-10 02:29:43,173 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2081658675] [2025-01-10 02:29:43,173 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-01-10 02:29:43,173 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2025-01-10 02:29:43,173 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-10 02:29:43,173 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2025-01-10 02:29:43,173 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=81, Invalid=381, Unknown=0, NotChecked=0, Total=462 [2025-01-10 02:29:43,174 INFO L87 Difference]: Start difference. First operand 1785 states and 2428 transitions. Second operand has 22 states, 19 states have (on average 3.0) internal successors, (57), 16 states have internal predecessors, (57), 8 states have call successors, (10), 7 states have call predecessors, (10), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2025-01-10 02:29:43,863 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-10 02:29:43,864 INFO L93 Difference]: Finished difference Result 2842 states and 4279 transitions. [2025-01-10 02:29:43,864 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2025-01-10 02:29:43,864 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 19 states have (on average 3.0) internal successors, (57), 16 states have internal predecessors, (57), 8 states have call successors, (10), 7 states have call predecessors, (10), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 43 [2025-01-10 02:29:43,864 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-10 02:29:43,875 INFO L225 Difference]: With dead ends: 2842 [2025-01-10 02:29:43,875 INFO L226 Difference]: Without dead ends: 2841 [2025-01-10 02:29:43,876 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 116 GetRequests, 77 SyntacticMatches, 0 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 289 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=339, Invalid=1301, Unknown=0, NotChecked=0, Total=1640 [2025-01-10 02:29:43,876 INFO L435 NwaCegarLoop]: 20 mSDtfsCounter, 250 mSDsluCounter, 320 mSDsCounter, 0 mSdLazyCounter, 428 mSolverCounterSat, 156 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 260 SdHoareTripleChecker+Valid, 340 SdHoareTripleChecker+Invalid, 584 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 156 IncrementalHoareTripleChecker+Valid, 428 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2025-01-10 02:29:43,877 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [260 Valid, 340 Invalid, 584 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [156 Valid, 428 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2025-01-10 02:29:43,878 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2841 states. [2025-01-10 02:29:44,046 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2841 to 2615. [2025-01-10 02:29:44,049 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2615 states, 1874 states have (on average 1.1408751334044824) internal successors, (2138), 1971 states have internal predecessors, (2138), 498 states have call successors, (498), 107 states have call predecessors, (498), 238 states have return successors, (922), 536 states have call predecessors, (922), 483 states have call successors, (922) [2025-01-10 02:29:44,056 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2615 states to 2615 states and 3558 transitions. [2025-01-10 02:29:44,057 INFO L78 Accepts]: Start accepts. Automaton has 2615 states and 3558 transitions. Word has length 43 [2025-01-10 02:29:44,057 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-10 02:29:44,057 INFO L471 AbstractCegarLoop]: Abstraction has 2615 states and 3558 transitions. [2025-01-10 02:29:44,057 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 19 states have (on average 3.0) internal successors, (57), 16 states have internal predecessors, (57), 8 states have call successors, (10), 7 states have call predecessors, (10), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2025-01-10 02:29:44,058 INFO L276 IsEmpty]: Start isEmpty. Operand 2615 states and 3558 transitions. [2025-01-10 02:29:44,060 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2025-01-10 02:29:44,061 INFO L210 NwaCegarLoop]: Found error trace [2025-01-10 02:29:44,061 INFO L218 NwaCegarLoop]: trace histogram [5, 4, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-10 02:29:44,069 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2025-01-10 02:29:44,261 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13,10 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-10 02:29:44,262 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ackermannErr6ASSERT_VIOLATIONINTEGER_OVERFLOW === [ackermannErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ackermannErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ackermannErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 5 more)] === [2025-01-10 02:29:44,262 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-10 02:29:44,262 INFO L85 PathProgramCache]: Analyzing trace with hash -328093970, now seen corresponding path program 2 times [2025-01-10 02:29:44,262 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-10 02:29:44,262 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [73464384] [2025-01-10 02:29:44,262 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-01-10 02:29:44,262 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-10 02:29:44,265 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 44 statements into 2 equivalence classes. [2025-01-10 02:29:44,270 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 44 of 44 statements. [2025-01-10 02:29:44,273 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-01-10 02:29:44,273 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-10 02:29:44,375 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 26 proven. 8 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2025-01-10 02:29:44,375 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-10 02:29:44,375 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [73464384] [2025-01-10 02:29:44,375 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [73464384] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-10 02:29:44,375 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [375796021] [2025-01-10 02:29:44,375 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-01-10 02:29:44,375 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-10 02:29:44,376 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-10 02:29:44,378 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) [2025-01-10 02:29:44,379 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 [2025-01-10 02:29:44,400 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 44 statements into 2 equivalence classes. [2025-01-10 02:29:44,410 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 44 of 44 statements. [2025-01-10 02:29:44,410 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-01-10 02:29:44,410 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-10 02:29:44,411 INFO L256 TraceCheckSpWp]: Trace formula consists of 119 conjuncts, 11 conjuncts are in the unsatisfiable core [2025-01-10 02:29:44,412 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-10 02:29:44,449 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 24 proven. 10 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2025-01-10 02:29:44,449 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-01-10 02:29:44,603 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 28 proven. 6 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2025-01-10 02:29:44,603 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [375796021] provided 0 perfect and 2 imperfect interpolant sequences [2025-01-10 02:29:44,603 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-01-10 02:29:44,603 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 10] total 21 [2025-01-10 02:29:44,603 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1529180980] [2025-01-10 02:29:44,604 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-01-10 02:29:44,604 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2025-01-10 02:29:44,604 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-10 02:29:44,604 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2025-01-10 02:29:44,604 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=394, Unknown=0, NotChecked=0, Total=462 [2025-01-10 02:29:44,604 INFO L87 Difference]: Start difference. First operand 2615 states and 3558 transitions. Second operand has 22 states, 21 states have (on average 2.9047619047619047) internal successors, (61), 16 states have internal predecessors, (61), 5 states have call successors, (7), 5 states have call predecessors, (7), 5 states have return successors, (5), 4 states have call predecessors, (5), 1 states have call successors, (5) [2025-01-10 02:29:45,489 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-10 02:29:45,489 INFO L93 Difference]: Finished difference Result 5426 states and 9019 transitions. [2025-01-10 02:29:45,489 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2025-01-10 02:29:45,489 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 21 states have (on average 2.9047619047619047) internal successors, (61), 16 states have internal predecessors, (61), 5 states have call successors, (7), 5 states have call predecessors, (7), 5 states have return successors, (5), 4 states have call predecessors, (5), 1 states have call successors, (5) Word has length 44 [2025-01-10 02:29:45,490 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-10 02:29:45,505 INFO L225 Difference]: With dead ends: 5426 [2025-01-10 02:29:45,505 INFO L226 Difference]: Without dead ends: 3895 [2025-01-10 02:29:45,517 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 132 GetRequests, 83 SyntacticMatches, 0 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 543 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=501, Invalid=2049, Unknown=0, NotChecked=0, Total=2550 [2025-01-10 02:29:45,517 INFO L435 NwaCegarLoop]: 39 mSDtfsCounter, 196 mSDsluCounter, 254 mSDsCounter, 0 mSdLazyCounter, 513 mSolverCounterSat, 187 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 196 SdHoareTripleChecker+Valid, 293 SdHoareTripleChecker+Invalid, 700 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 187 IncrementalHoareTripleChecker+Valid, 513 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2025-01-10 02:29:45,517 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [196 Valid, 293 Invalid, 700 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [187 Valid, 513 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2025-01-10 02:29:45,520 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3895 states. [2025-01-10 02:29:45,755 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3895 to 2888. [2025-01-10 02:29:45,760 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2888 states, 2074 states have (on average 1.1374156219864995) internal successors, (2359), 2180 states have internal predecessors, (2359), 547 states have call successors, (547), 122 states have call predecessors, (547), 262 states have return successors, (1006), 585 states have call predecessors, (1006), 532 states have call successors, (1006) [2025-01-10 02:29:45,768 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2888 states to 2888 states and 3912 transitions. [2025-01-10 02:29:45,771 INFO L78 Accepts]: Start accepts. Automaton has 2888 states and 3912 transitions. Word has length 44 [2025-01-10 02:29:45,772 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-10 02:29:45,772 INFO L471 AbstractCegarLoop]: Abstraction has 2888 states and 3912 transitions. [2025-01-10 02:29:45,772 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 21 states have (on average 2.9047619047619047) internal successors, (61), 16 states have internal predecessors, (61), 5 states have call successors, (7), 5 states have call predecessors, (7), 5 states have return successors, (5), 4 states have call predecessors, (5), 1 states have call successors, (5) [2025-01-10 02:29:45,772 INFO L276 IsEmpty]: Start isEmpty. Operand 2888 states and 3912 transitions. [2025-01-10 02:29:45,773 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2025-01-10 02:29:45,774 INFO L210 NwaCegarLoop]: Found error trace [2025-01-10 02:29:45,774 INFO L218 NwaCegarLoop]: trace histogram [5, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-10 02:29:45,781 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2025-01-10 02:29:45,978 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,SelfDestructingSolverStorable14 [2025-01-10 02:29:45,978 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ackermannErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ackermannErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ackermannErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ackermannErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 5 more)] === [2025-01-10 02:29:45,979 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-10 02:29:45,979 INFO L85 PathProgramCache]: Analyzing trace with hash 1781931564, now seen corresponding path program 1 times [2025-01-10 02:29:45,979 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-10 02:29:45,979 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [923818812] [2025-01-10 02:29:45,979 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-10 02:29:45,979 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-10 02:29:45,982 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 44 statements into 1 equivalence classes. [2025-01-10 02:29:45,986 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 44 of 44 statements. [2025-01-10 02:29:45,987 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-10 02:29:45,987 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-10 02:29:46,031 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 22 proven. 5 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2025-01-10 02:29:46,031 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-10 02:29:46,031 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [923818812] [2025-01-10 02:29:46,032 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [923818812] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-10 02:29:46,032 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [756139528] [2025-01-10 02:29:46,032 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-10 02:29:46,032 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-10 02:29:46,032 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-10 02:29:46,034 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) [2025-01-10 02:29:46,035 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 [2025-01-10 02:29:46,058 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 44 statements into 1 equivalence classes. [2025-01-10 02:29:46,067 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 44 of 44 statements. [2025-01-10 02:29:46,067 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-10 02:29:46,068 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-10 02:29:46,068 INFO L256 TraceCheckSpWp]: Trace formula consists of 124 conjuncts, 6 conjuncts are in the unsatisfiable core [2025-01-10 02:29:46,070 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-10 02:29:46,083 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 22 proven. 5 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2025-01-10 02:29:46,084 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-01-10 02:29:46,167 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 22 proven. 5 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2025-01-10 02:29:46,167 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [756139528] provided 0 perfect and 2 imperfect interpolant sequences [2025-01-10 02:29:46,167 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-01-10 02:29:46,167 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 9 [2025-01-10 02:29:46,167 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1117658429] [2025-01-10 02:29:46,167 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-01-10 02:29:46,167 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2025-01-10 02:29:46,167 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-10 02:29:46,168 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2025-01-10 02:29:46,168 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2025-01-10 02:29:46,168 INFO L87 Difference]: Start difference. First operand 2888 states and 3912 transitions. Second operand has 9 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 9 states have internal predecessors, (33), 3 states have call successors, (4), 2 states have call predecessors, (4), 3 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2025-01-10 02:29:46,485 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-10 02:29:46,485 INFO L93 Difference]: Finished difference Result 4468 states and 6527 transitions. [2025-01-10 02:29:46,486 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2025-01-10 02:29:46,486 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 9 states have internal predecessors, (33), 3 states have call successors, (4), 2 states have call predecessors, (4), 3 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 44 [2025-01-10 02:29:46,486 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-10 02:29:46,496 INFO L225 Difference]: With dead ends: 4468 [2025-01-10 02:29:46,497 INFO L226 Difference]: Without dead ends: 2476 [2025-01-10 02:29:46,510 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 100 GetRequests, 85 SyntacticMatches, 3 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=61, Invalid=121, Unknown=0, NotChecked=0, Total=182 [2025-01-10 02:29:46,511 INFO L435 NwaCegarLoop]: 31 mSDtfsCounter, 80 mSDsluCounter, 65 mSDsCounter, 0 mSdLazyCounter, 93 mSolverCounterSat, 32 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 80 SdHoareTripleChecker+Valid, 96 SdHoareTripleChecker+Invalid, 125 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 32 IncrementalHoareTripleChecker+Valid, 93 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-01-10 02:29:46,512 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [80 Valid, 96 Invalid, 125 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [32 Valid, 93 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-01-10 02:29:46,514 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2476 states. [2025-01-10 02:29:46,643 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2476 to 1703. [2025-01-10 02:29:46,645 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1703 states, 1310 states have (on average 1.1778625954198474) internal successors, (1543), 1353 states have internal predecessors, (1543), 249 states have call successors, (249), 116 states have call predecessors, (249), 139 states have return successors, (368), 233 states have call predecessors, (368), 218 states have call successors, (368) [2025-01-10 02:29:46,648 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1703 states to 1703 states and 2160 transitions. [2025-01-10 02:29:46,650 INFO L78 Accepts]: Start accepts. Automaton has 1703 states and 2160 transitions. Word has length 44 [2025-01-10 02:29:46,650 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-10 02:29:46,651 INFO L471 AbstractCegarLoop]: Abstraction has 1703 states and 2160 transitions. [2025-01-10 02:29:46,651 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 9 states have internal predecessors, (33), 3 states have call successors, (4), 2 states have call predecessors, (4), 3 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2025-01-10 02:29:46,651 INFO L276 IsEmpty]: Start isEmpty. Operand 1703 states and 2160 transitions. [2025-01-10 02:29:46,652 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2025-01-10 02:29:46,652 INFO L210 NwaCegarLoop]: Found error trace [2025-01-10 02:29:46,652 INFO L218 NwaCegarLoop]: trace histogram [7, 6, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-10 02:29:46,657 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 [2025-01-10 02:29:46,852 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,SelfDestructingSolverStorable15 [2025-01-10 02:29:46,853 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ackermannErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ackermannErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ackermannErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ackermannErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 5 more)] === [2025-01-10 02:29:46,853 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-10 02:29:46,853 INFO L85 PathProgramCache]: Analyzing trace with hash 1331455508, now seen corresponding path program 1 times [2025-01-10 02:29:46,853 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-10 02:29:46,853 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1837397265] [2025-01-10 02:29:46,853 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-10 02:29:46,853 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-10 02:29:46,855 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 51 statements into 1 equivalence classes. [2025-01-10 02:29:46,858 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 51 of 51 statements. [2025-01-10 02:29:46,859 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-10 02:29:46,859 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-10 02:29:46,918 INFO L134 CoverageAnalysis]: Checked inductivity of 73 backedges. 52 proven. 6 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2025-01-10 02:29:46,918 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-10 02:29:46,918 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1837397265] [2025-01-10 02:29:46,918 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1837397265] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-10 02:29:46,918 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [674261696] [2025-01-10 02:29:46,918 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-10 02:29:46,918 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-10 02:29:46,919 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-10 02:29:46,920 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) [2025-01-10 02:29:46,922 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 [2025-01-10 02:29:46,943 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 51 statements into 1 equivalence classes. [2025-01-10 02:29:46,952 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 51 of 51 statements. [2025-01-10 02:29:46,953 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-10 02:29:46,953 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-10 02:29:46,954 INFO L256 TraceCheckSpWp]: Trace formula consists of 140 conjuncts, 9 conjuncts are in the unsatisfiable core [2025-01-10 02:29:46,954 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-10 02:29:46,977 INFO L134 CoverageAnalysis]: Checked inductivity of 73 backedges. 52 proven. 3 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2025-01-10 02:29:46,978 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-01-10 02:29:47,063 INFO L134 CoverageAnalysis]: Checked inductivity of 73 backedges. 53 proven. 2 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2025-01-10 02:29:47,063 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [674261696] provided 0 perfect and 2 imperfect interpolant sequences [2025-01-10 02:29:47,063 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-01-10 02:29:47,063 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 7, 7] total 11 [2025-01-10 02:29:47,063 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [109967008] [2025-01-10 02:29:47,063 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-01-10 02:29:47,064 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2025-01-10 02:29:47,064 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-10 02:29:47,064 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2025-01-10 02:29:47,064 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2025-01-10 02:29:47,064 INFO L87 Difference]: Start difference. First operand 1703 states and 2160 transitions. Second operand has 11 states, 11 states have (on average 4.181818181818182) internal successors, (46), 9 states have internal predecessors, (46), 5 states have call successors, (9), 4 states have call predecessors, (9), 2 states have return successors, (3), 1 states have call predecessors, (3), 2 states have call successors, (3) [2025-01-10 02:29:47,295 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-10 02:29:47,295 INFO L93 Difference]: Finished difference Result 1987 states and 2619 transitions. [2025-01-10 02:29:47,295 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2025-01-10 02:29:47,296 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 4.181818181818182) internal successors, (46), 9 states have internal predecessors, (46), 5 states have call successors, (9), 4 states have call predecessors, (9), 2 states have return successors, (3), 1 states have call predecessors, (3), 2 states have call successors, (3) Word has length 51 [2025-01-10 02:29:47,296 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-10 02:29:47,302 INFO L225 Difference]: With dead ends: 1987 [2025-01-10 02:29:47,302 INFO L226 Difference]: Without dead ends: 1807 [2025-01-10 02:29:47,303 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 117 GetRequests, 97 SyntacticMatches, 5 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=70, Invalid=202, Unknown=0, NotChecked=0, Total=272 [2025-01-10 02:29:47,303 INFO L435 NwaCegarLoop]: 27 mSDtfsCounter, 58 mSDsluCounter, 145 mSDsCounter, 0 mSdLazyCounter, 215 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 62 SdHoareTripleChecker+Valid, 172 SdHoareTripleChecker+Invalid, 234 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 215 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-01-10 02:29:47,304 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [62 Valid, 172 Invalid, 234 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 215 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-01-10 02:29:47,306 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1807 states. [2025-01-10 02:29:47,401 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1807 to 1729. [2025-01-10 02:29:47,402 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1729 states, 1331 states have (on average 1.175807663410969) internal successors, (1565), 1373 states have internal predecessors, (1565), 254 states have call successors, (254), 119 states have call predecessors, (254), 139 states have return successors, (370), 236 states have call predecessors, (370), 220 states have call successors, (370) [2025-01-10 02:29:47,406 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1729 states to 1729 states and 2189 transitions. [2025-01-10 02:29:47,407 INFO L78 Accepts]: Start accepts. Automaton has 1729 states and 2189 transitions. Word has length 51 [2025-01-10 02:29:47,407 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-10 02:29:47,407 INFO L471 AbstractCegarLoop]: Abstraction has 1729 states and 2189 transitions. [2025-01-10 02:29:47,407 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 4.181818181818182) internal successors, (46), 9 states have internal predecessors, (46), 5 states have call successors, (9), 4 states have call predecessors, (9), 2 states have return successors, (3), 1 states have call predecessors, (3), 2 states have call successors, (3) [2025-01-10 02:29:47,407 INFO L276 IsEmpty]: Start isEmpty. Operand 1729 states and 2189 transitions. [2025-01-10 02:29:47,410 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2025-01-10 02:29:47,410 INFO L210 NwaCegarLoop]: Found error trace [2025-01-10 02:29:47,410 INFO L218 NwaCegarLoop]: trace histogram [6, 4, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-10 02:29:47,417 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2025-01-10 02:29:47,610 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2025-01-10 02:29:47,611 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting ackermannErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ackermannErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ackermannErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ackermannErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 5 more)] === [2025-01-10 02:29:47,611 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-10 02:29:47,611 INFO L85 PathProgramCache]: Analyzing trace with hash -603852535, now seen corresponding path program 1 times [2025-01-10 02:29:47,611 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-10 02:29:47,611 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [312434315] [2025-01-10 02:29:47,611 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-10 02:29:47,612 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-10 02:29:47,614 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 53 statements into 1 equivalence classes. [2025-01-10 02:29:47,618 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 53 of 53 statements. [2025-01-10 02:29:47,618 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-10 02:29:47,618 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-10 02:29:47,729 INFO L134 CoverageAnalysis]: Checked inductivity of 58 backedges. 18 proven. 19 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2025-01-10 02:29:47,729 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-10 02:29:47,729 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [312434315] [2025-01-10 02:29:47,729 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [312434315] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-10 02:29:47,729 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1651472045] [2025-01-10 02:29:47,729 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-10 02:29:47,729 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-10 02:29:47,730 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-10 02:29:47,731 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) [2025-01-10 02:29:47,733 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 [2025-01-10 02:29:47,755 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 53 statements into 1 equivalence classes. [2025-01-10 02:29:47,766 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 53 of 53 statements. [2025-01-10 02:29:47,766 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-10 02:29:47,766 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-10 02:29:47,767 INFO L256 TraceCheckSpWp]: Trace formula consists of 146 conjuncts, 15 conjuncts are in the unsatisfiable core [2025-01-10 02:29:47,768 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-10 02:29:47,792 INFO L134 CoverageAnalysis]: Checked inductivity of 58 backedges. 14 proven. 18 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2025-01-10 02:29:47,792 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-01-10 02:29:48,167 INFO L134 CoverageAnalysis]: Checked inductivity of 58 backedges. 18 proven. 19 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2025-01-10 02:29:48,167 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1651472045] provided 0 perfect and 2 imperfect interpolant sequences [2025-01-10 02:29:48,168 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-01-10 02:29:48,168 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 11, 13] total 25 [2025-01-10 02:29:48,168 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [263532299] [2025-01-10 02:29:48,168 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-01-10 02:29:48,168 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2025-01-10 02:29:48,168 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-10 02:29:48,169 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2025-01-10 02:29:48,169 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=82, Invalid=568, Unknown=0, NotChecked=0, Total=650 [2025-01-10 02:29:48,169 INFO L87 Difference]: Start difference. First operand 1729 states and 2189 transitions. Second operand has 26 states, 25 states have (on average 2.16) internal successors, (54), 20 states have internal predecessors, (54), 5 states have call successors, (7), 3 states have call predecessors, (7), 8 states have return successors, (9), 8 states have call predecessors, (9), 3 states have call successors, (9) [2025-01-10 02:29:49,589 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-10 02:29:49,589 INFO L93 Difference]: Finished difference Result 4144 states and 7114 transitions. [2025-01-10 02:29:49,589 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 72 states. [2025-01-10 02:29:49,590 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 25 states have (on average 2.16) internal successors, (54), 20 states have internal predecessors, (54), 5 states have call successors, (7), 3 states have call predecessors, (7), 8 states have return successors, (9), 8 states have call predecessors, (9), 3 states have call successors, (9) Word has length 53 [2025-01-10 02:29:49,590 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-10 02:29:49,607 INFO L225 Difference]: With dead ends: 4144 [2025-01-10 02:29:49,608 INFO L226 Difference]: Without dead ends: 4138 [2025-01-10 02:29:49,611 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 188 GetRequests, 97 SyntacticMatches, 0 SemanticMatches, 91 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2491 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=1475, Invalid=7081, Unknown=0, NotChecked=0, Total=8556 [2025-01-10 02:29:49,611 INFO L435 NwaCegarLoop]: 27 mSDtfsCounter, 161 mSDsluCounter, 247 mSDsCounter, 0 mSdLazyCounter, 551 mSolverCounterSat, 294 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 161 SdHoareTripleChecker+Valid, 274 SdHoareTripleChecker+Invalid, 845 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 294 IncrementalHoareTripleChecker+Valid, 551 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2025-01-10 02:29:49,612 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [161 Valid, 274 Invalid, 845 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [294 Valid, 551 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2025-01-10 02:29:49,614 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4138 states. [2025-01-10 02:29:49,867 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4138 to 2962. [2025-01-10 02:29:49,871 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2962 states, 2131 states have (on average 1.1426560300328483) internal successors, (2435), 2176 states have internal predecessors, (2435), 500 states have call successors, (500), 148 states have call predecessors, (500), 326 states have return successors, (2371), 637 states have call predecessors, (2371), 455 states have call successors, (2371) [2025-01-10 02:29:49,885 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2962 states to 2962 states and 5306 transitions. [2025-01-10 02:29:49,887 INFO L78 Accepts]: Start accepts. Automaton has 2962 states and 5306 transitions. Word has length 53 [2025-01-10 02:29:49,887 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-10 02:29:49,887 INFO L471 AbstractCegarLoop]: Abstraction has 2962 states and 5306 transitions. [2025-01-10 02:29:49,887 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 25 states have (on average 2.16) internal successors, (54), 20 states have internal predecessors, (54), 5 states have call successors, (7), 3 states have call predecessors, (7), 8 states have return successors, (9), 8 states have call predecessors, (9), 3 states have call successors, (9) [2025-01-10 02:29:49,888 INFO L276 IsEmpty]: Start isEmpty. Operand 2962 states and 5306 transitions. [2025-01-10 02:29:49,889 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2025-01-10 02:29:49,890 INFO L210 NwaCegarLoop]: Found error trace [2025-01-10 02:29:49,890 INFO L218 NwaCegarLoop]: trace histogram [8, 8, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1] [2025-01-10 02:29:49,895 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2025-01-10 02:29:50,090 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2025-01-10 02:29:50,091 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting ackermannErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ackermannErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ackermannErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ackermannErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 5 more)] === [2025-01-10 02:29:50,091 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-10 02:29:50,091 INFO L85 PathProgramCache]: Analyzing trace with hash 38844242, now seen corresponding path program 1 times [2025-01-10 02:29:50,091 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-10 02:29:50,091 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1174376415] [2025-01-10 02:29:50,091 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-10 02:29:50,091 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-10 02:29:50,094 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 57 statements into 1 equivalence classes. [2025-01-10 02:29:50,097 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 57 of 57 statements. [2025-01-10 02:29:50,097 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-10 02:29:50,097 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-10 02:29:50,202 INFO L134 CoverageAnalysis]: Checked inductivity of 120 backedges. 0 proven. 111 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2025-01-10 02:29:50,202 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-10 02:29:50,202 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1174376415] [2025-01-10 02:29:50,202 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1174376415] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-10 02:29:50,202 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1105797272] [2025-01-10 02:29:50,202 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-10 02:29:50,202 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-10 02:29:50,202 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-10 02:29:50,205 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) [2025-01-10 02:29:50,206 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 [2025-01-10 02:29:50,230 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 57 statements into 1 equivalence classes. [2025-01-10 02:29:50,240 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 57 of 57 statements. [2025-01-10 02:29:50,240 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-10 02:29:50,240 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-10 02:29:50,240 INFO L256 TraceCheckSpWp]: Trace formula consists of 150 conjuncts, 18 conjuncts are in the unsatisfiable core [2025-01-10 02:29:50,242 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-10 02:29:50,298 INFO L134 CoverageAnalysis]: Checked inductivity of 120 backedges. 0 proven. 111 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2025-01-10 02:29:50,298 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-01-10 02:29:50,421 INFO L134 CoverageAnalysis]: Checked inductivity of 120 backedges. 0 proven. 111 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2025-01-10 02:29:50,421 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1105797272] provided 0 perfect and 2 imperfect interpolant sequences [2025-01-10 02:29:50,421 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-01-10 02:29:50,421 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12, 12] total 23 [2025-01-10 02:29:50,421 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [684722938] [2025-01-10 02:29:50,421 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-01-10 02:29:50,422 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2025-01-10 02:29:50,422 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-10 02:29:50,422 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2025-01-10 02:29:50,422 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=136, Invalid=416, Unknown=0, NotChecked=0, Total=552 [2025-01-10 02:29:50,422 INFO L87 Difference]: Start difference. First operand 2962 states and 5306 transitions. Second operand has 24 states, 23 states have (on average 3.652173913043478) internal successors, (84), 14 states have internal predecessors, (84), 10 states have call successors, (16), 10 states have call predecessors, (16), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-10 02:29:51,394 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-10 02:29:51,394 INFO L93 Difference]: Finished difference Result 8474 states and 15426 transitions. [2025-01-10 02:29:51,394 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2025-01-10 02:29:51,394 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 23 states have (on average 3.652173913043478) internal successors, (84), 14 states have internal predecessors, (84), 10 states have call successors, (16), 10 states have call predecessors, (16), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 57 [2025-01-10 02:29:51,398 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-10 02:29:51,429 INFO L225 Difference]: With dead ends: 8474 [2025-01-10 02:29:51,429 INFO L226 Difference]: Without dead ends: 8472 [2025-01-10 02:29:51,432 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 140 GetRequests, 108 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 180 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=311, Invalid=811, Unknown=0, NotChecked=0, Total=1122 [2025-01-10 02:29:51,432 INFO L435 NwaCegarLoop]: 32 mSDtfsCounter, 579 mSDsluCounter, 333 mSDsCounter, 0 mSdLazyCounter, 331 mSolverCounterSat, 150 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 582 SdHoareTripleChecker+Valid, 365 SdHoareTripleChecker+Invalid, 481 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 150 IncrementalHoareTripleChecker+Valid, 331 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2025-01-10 02:29:51,432 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [582 Valid, 365 Invalid, 481 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [150 Valid, 331 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2025-01-10 02:29:51,436 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8472 states. [2025-01-10 02:29:52,090 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8472 to 8242. [2025-01-10 02:29:52,105 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8242 states, 5995 states have (on average 1.1457881567973311) internal successors, (6869), 6112 states have internal predecessors, (6869), 1370 states have call successors, (1370), 442 states have call predecessors, (1370), 872 states have return successors, (6355), 1687 states have call predecessors, (6355), 1253 states have call successors, (6355) [2025-01-10 02:29:52,138 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8242 states to 8242 states and 14594 transitions. [2025-01-10 02:29:52,144 INFO L78 Accepts]: Start accepts. Automaton has 8242 states and 14594 transitions. Word has length 57 [2025-01-10 02:29:52,145 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-10 02:29:52,145 INFO L471 AbstractCegarLoop]: Abstraction has 8242 states and 14594 transitions. [2025-01-10 02:29:52,145 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 23 states have (on average 3.652173913043478) internal successors, (84), 14 states have internal predecessors, (84), 10 states have call successors, (16), 10 states have call predecessors, (16), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-10 02:29:52,145 INFO L276 IsEmpty]: Start isEmpty. Operand 8242 states and 14594 transitions. [2025-01-10 02:29:52,147 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2025-01-10 02:29:52,147 INFO L210 NwaCegarLoop]: Found error trace [2025-01-10 02:29:52,147 INFO L218 NwaCegarLoop]: trace histogram [6, 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] [2025-01-10 02:29:52,153 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2025-01-10 02:29:52,348 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,15 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-10 02:29:52,348 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting ackermannErr6ASSERT_VIOLATIONINTEGER_OVERFLOW === [ackermannErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ackermannErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ackermannErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 5 more)] === [2025-01-10 02:29:52,349 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-10 02:29:52,349 INFO L85 PathProgramCache]: Analyzing trace with hash -476681264, now seen corresponding path program 1 times [2025-01-10 02:29:52,349 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-10 02:29:52,349 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [329425407] [2025-01-10 02:29:52,349 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-10 02:29:52,349 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-10 02:29:52,352 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 55 statements into 1 equivalence classes. [2025-01-10 02:29:52,355 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 55 of 55 statements. [2025-01-10 02:29:52,355 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-10 02:29:52,355 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-10 02:29:52,474 INFO L134 CoverageAnalysis]: Checked inductivity of 63 backedges. 33 proven. 9 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2025-01-10 02:29:52,475 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-10 02:29:52,475 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [329425407] [2025-01-10 02:29:52,475 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [329425407] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-10 02:29:52,475 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [835201258] [2025-01-10 02:29:52,475 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-10 02:29:52,475 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-10 02:29:52,475 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-10 02:29:52,477 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) [2025-01-10 02:29:52,478 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 [2025-01-10 02:29:52,503 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 55 statements into 1 equivalence classes. [2025-01-10 02:29:52,513 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 55 of 55 statements. [2025-01-10 02:29:52,514 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-10 02:29:52,514 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-10 02:29:52,515 INFO L256 TraceCheckSpWp]: Trace formula consists of 147 conjuncts, 15 conjuncts are in the unsatisfiable core [2025-01-10 02:29:52,516 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-10 02:29:52,542 INFO L134 CoverageAnalysis]: Checked inductivity of 63 backedges. 27 proven. 10 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2025-01-10 02:29:52,543 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-01-10 02:29:52,862 INFO L134 CoverageAnalysis]: Checked inductivity of 63 backedges. 40 proven. 2 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2025-01-10 02:29:52,862 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [835201258] provided 0 perfect and 2 imperfect interpolant sequences [2025-01-10 02:29:52,863 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-01-10 02:29:52,863 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 11, 13] total 25 [2025-01-10 02:29:52,863 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1778176443] [2025-01-10 02:29:52,863 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-01-10 02:29:52,863 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2025-01-10 02:29:52,863 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-10 02:29:52,863 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2025-01-10 02:29:52,863 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=88, Invalid=562, Unknown=0, NotChecked=0, Total=650 [2025-01-10 02:29:52,864 INFO L87 Difference]: Start difference. First operand 8242 states and 14594 transitions. Second operand has 26 states, 25 states have (on average 2.32) internal successors, (58), 20 states have internal predecessors, (58), 5 states have call successors, (7), 3 states have call predecessors, (7), 8 states have return successors, (9), 8 states have call predecessors, (9), 3 states have call successors, (9) [2025-01-10 02:29:56,856 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-10 02:29:56,856 INFO L93 Difference]: Finished difference Result 34035 states and 100296 transitions. [2025-01-10 02:29:56,856 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 76 states. [2025-01-10 02:29:56,856 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 25 states have (on average 2.32) internal successors, (58), 20 states have internal predecessors, (58), 5 states have call successors, (7), 3 states have call predecessors, (7), 8 states have return successors, (9), 8 states have call predecessors, (9), 3 states have call successors, (9) Word has length 55 [2025-01-10 02:29:56,856 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-10 02:29:57,091 INFO L225 Difference]: With dead ends: 34035 [2025-01-10 02:29:57,091 INFO L226 Difference]: Without dead ends: 26532 [2025-01-10 02:29:57,226 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 197 GetRequests, 102 SyntacticMatches, 0 SemanticMatches, 95 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2431 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=1752, Invalid=7560, Unknown=0, NotChecked=0, Total=9312 [2025-01-10 02:29:57,227 INFO L435 NwaCegarLoop]: 43 mSDtfsCounter, 169 mSDsluCounter, 355 mSDsCounter, 0 mSdLazyCounter, 976 mSolverCounterSat, 209 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 169 SdHoareTripleChecker+Valid, 398 SdHoareTripleChecker+Invalid, 1185 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 209 IncrementalHoareTripleChecker+Valid, 976 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2025-01-10 02:29:57,228 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [169 Valid, 398 Invalid, 1185 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [209 Valid, 976 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2025-01-10 02:29:57,246 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26532 states. [2025-01-10 02:29:59,854 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26532 to 18475. [2025-01-10 02:29:59,883 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18475 states, 12326 states have (on average 1.0888366055492456) internal successors, (13421), 12461 states have internal predecessors, (13421), 3618 states have call successors, (3618), 570 states have call predecessors, (3618), 2526 states have return successors, (38824), 5443 states have call predecessors, (38824), 3469 states have call successors, (38824) [2025-01-10 02:30:00,103 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18475 states to 18475 states and 55863 transitions. [2025-01-10 02:30:00,117 INFO L78 Accepts]: Start accepts. Automaton has 18475 states and 55863 transitions. Word has length 55 [2025-01-10 02:30:00,118 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-10 02:30:00,118 INFO L471 AbstractCegarLoop]: Abstraction has 18475 states and 55863 transitions. [2025-01-10 02:30:00,118 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 25 states have (on average 2.32) internal successors, (58), 20 states have internal predecessors, (58), 5 states have call successors, (7), 3 states have call predecessors, (7), 8 states have return successors, (9), 8 states have call predecessors, (9), 3 states have call successors, (9) [2025-01-10 02:30:00,118 INFO L276 IsEmpty]: Start isEmpty. Operand 18475 states and 55863 transitions. [2025-01-10 02:30:00,121 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2025-01-10 02:30:00,121 INFO L210 NwaCegarLoop]: Found error trace [2025-01-10 02:30:00,121 INFO L218 NwaCegarLoop]: trace histogram [7, 7, 7, 7, 7, 6, 6, 6, 1, 1, 1, 1, 1, 1] [2025-01-10 02:30:00,127 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2025-01-10 02:30:00,325 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,16 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-10 02:30:00,325 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting ackermannErr6ASSERT_VIOLATIONINTEGER_OVERFLOW === [ackermannErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ackermannErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ackermannErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 5 more)] === [2025-01-10 02:30:00,325 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-10 02:30:00,325 INFO L85 PathProgramCache]: Analyzing trace with hash 1608770754, now seen corresponding path program 2 times [2025-01-10 02:30:00,325 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-10 02:30:00,325 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1264742187] [2025-01-10 02:30:00,325 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-01-10 02:30:00,325 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-10 02:30:00,328 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 59 statements into 2 equivalence classes. [2025-01-10 02:30:00,331 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 59 of 59 statements. [2025-01-10 02:30:00,331 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-01-10 02:30:00,331 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-10 02:30:00,460 INFO L134 CoverageAnalysis]: Checked inductivity of 156 backedges. 0 proven. 156 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-10 02:30:00,460 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-10 02:30:00,460 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1264742187] [2025-01-10 02:30:00,460 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1264742187] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-10 02:30:00,460 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [180785897] [2025-01-10 02:30:00,460 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-01-10 02:30:00,460 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-10 02:30:00,460 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-10 02:30:00,463 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) [2025-01-10 02:30:00,464 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 [2025-01-10 02:30:00,497 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 59 statements into 2 equivalence classes. [2025-01-10 02:30:00,509 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 59 of 59 statements. [2025-01-10 02:30:00,509 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-01-10 02:30:00,509 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-10 02:30:00,510 INFO L256 TraceCheckSpWp]: Trace formula consists of 140 conjuncts, 16 conjuncts are in the unsatisfiable core [2025-01-10 02:30:00,510 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-10 02:30:00,562 INFO L134 CoverageAnalysis]: Checked inductivity of 156 backedges. 0 proven. 156 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-10 02:30:00,563 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-01-10 02:30:00,755 INFO L134 CoverageAnalysis]: Checked inductivity of 156 backedges. 0 proven. 156 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-10 02:30:00,755 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [180785897] provided 0 perfect and 2 imperfect interpolant sequences [2025-01-10 02:30:00,755 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-01-10 02:30:00,755 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16, 16] total 31 [2025-01-10 02:30:00,755 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [948201741] [2025-01-10 02:30:00,755 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-01-10 02:30:00,756 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2025-01-10 02:30:00,756 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-10 02:30:00,756 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2025-01-10 02:30:00,756 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=244, Invalid=748, Unknown=0, NotChecked=0, Total=992 [2025-01-10 02:30:00,757 INFO L87 Difference]: Start difference. First operand 18475 states and 55863 transitions. Second operand has 32 states, 29 states have (on average 3.4827586206896552) internal successors, (101), 18 states have internal predecessors, (101), 14 states have call successors, (14), 14 states have call predecessors, (14), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-10 02:30:04,617 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-10 02:30:04,617 INFO L93 Difference]: Finished difference Result 26093 states and 77665 transitions. [2025-01-10 02:30:04,617 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2025-01-10 02:30:04,618 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 29 states have (on average 3.4827586206896552) internal successors, (101), 18 states have internal predecessors, (101), 14 states have call successors, (14), 14 states have call predecessors, (14), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 59 [2025-01-10 02:30:04,618 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-10 02:30:04,942 INFO L225 Difference]: With dead ends: 26093 [2025-01-10 02:30:04,942 INFO L226 Difference]: Without dead ends: 26092 [2025-01-10 02:30:04,956 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 146 GetRequests, 102 SyntacticMatches, 0 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 364 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=573, Invalid=1497, Unknown=0, NotChecked=0, Total=2070 [2025-01-10 02:30:04,957 INFO L435 NwaCegarLoop]: 25 mSDtfsCounter, 676 mSDsluCounter, 416 mSDsCounter, 0 mSdLazyCounter, 480 mSolverCounterSat, 110 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 691 SdHoareTripleChecker+Valid, 441 SdHoareTripleChecker+Invalid, 590 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 110 IncrementalHoareTripleChecker+Valid, 480 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2025-01-10 02:30:04,957 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [691 Valid, 441 Invalid, 590 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [110 Valid, 480 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2025-01-10 02:30:04,970 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26092 states. [2025-01-10 02:30:08,344 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26092 to 25067. [2025-01-10 02:30:08,378 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25067 states, 16694 states have (on average 1.082844135617587) internal successors, (18077), 16909 states have internal predecessors, (18077), 4802 states have call successors, (4802), 714 states have call predecessors, (4802), 3566 states have return successors, (51688), 7443 states have call predecessors, (51688), 4653 states have call successors, (51688) [2025-01-10 02:30:08,725 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25067 states to 25067 states and 74567 transitions. [2025-01-10 02:30:08,743 INFO L78 Accepts]: Start accepts. Automaton has 25067 states and 74567 transitions. Word has length 59 [2025-01-10 02:30:08,744 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-10 02:30:08,744 INFO L471 AbstractCegarLoop]: Abstraction has 25067 states and 74567 transitions. [2025-01-10 02:30:08,744 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 29 states have (on average 3.4827586206896552) internal successors, (101), 18 states have internal predecessors, (101), 14 states have call successors, (14), 14 states have call predecessors, (14), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-10 02:30:08,744 INFO L276 IsEmpty]: Start isEmpty. Operand 25067 states and 74567 transitions. [2025-01-10 02:30:08,747 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2025-01-10 02:30:08,747 INFO L210 NwaCegarLoop]: Found error trace [2025-01-10 02:30:08,747 INFO L218 NwaCegarLoop]: trace histogram [7, 6, 6, 6, 6, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-10 02:30:08,753 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Ended with exit code 0 [2025-01-10 02:30:08,951 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,17 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-10 02:30:08,951 INFO L396 AbstractCegarLoop]: === Iteration 22 === Targeting ackermannErr6ASSERT_VIOLATIONINTEGER_OVERFLOW === [ackermannErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ackermannErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ackermannErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 5 more)] === [2025-01-10 02:30:08,952 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-10 02:30:08,952 INFO L85 PathProgramCache]: Analyzing trace with hash -1055434239, now seen corresponding path program 3 times [2025-01-10 02:30:08,952 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-10 02:30:08,952 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [643947319] [2025-01-10 02:30:08,952 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-01-10 02:30:08,952 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-10 02:30:08,957 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 59 statements into 6 equivalence classes. [2025-01-10 02:30:08,968 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) and asserted 51 of 59 statements. [2025-01-10 02:30:08,969 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) [2025-01-10 02:30:08,969 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-10 02:30:09,026 INFO L134 CoverageAnalysis]: Checked inductivity of 122 backedges. 87 proven. 0 refuted. 0 times theorem prover too weak. 35 trivial. 0 not checked. [2025-01-10 02:30:09,029 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-10 02:30:09,030 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [643947319] [2025-01-10 02:30:09,030 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [643947319] provided 1 perfect and 0 imperfect interpolant sequences [2025-01-10 02:30:09,030 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-01-10 02:30:09,030 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2025-01-10 02:30:09,030 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [728357464] [2025-01-10 02:30:09,030 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-01-10 02:30:09,032 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-01-10 02:30:09,032 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-10 02:30:09,032 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-01-10 02:30:09,033 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2025-01-10 02:30:09,033 INFO L87 Difference]: Start difference. First operand 25067 states and 74567 transitions. Second operand has 5 states, 5 states have (on average 6.2) internal successors, (31), 5 states have internal predecessors, (31), 3 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2025-01-10 02:30:11,874 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-10 02:30:11,876 INFO L93 Difference]: Finished difference Result 25996 states and 77216 transitions. [2025-01-10 02:30:11,877 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-01-10 02:30:11,877 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 6.2) internal successors, (31), 5 states have internal predecessors, (31), 3 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 59 [2025-01-10 02:30:11,877 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-10 02:30:12,085 INFO L225 Difference]: With dead ends: 25996 [2025-01-10 02:30:12,085 INFO L226 Difference]: Without dead ends: 21293 [2025-01-10 02:30:12,122 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2025-01-10 02:30:12,123 INFO L435 NwaCegarLoop]: 23 mSDtfsCounter, 25 mSDsluCounter, 31 mSDsCounter, 0 mSdLazyCounter, 44 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 25 SdHoareTripleChecker+Valid, 54 SdHoareTripleChecker+Invalid, 54 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 44 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-01-10 02:30:12,123 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [25 Valid, 54 Invalid, 54 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 44 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-01-10 02:30:12,136 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21293 states. [2025-01-10 02:30:15,495 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21293 to 21139. [2025-01-10 02:30:15,519 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21139 states, 13440 states have (on average 1.0405505952380953) internal successors, (13985), 13493 states have internal predecessors, (13985), 4411 states have call successors, (4411), 331 states have call predecessors, (4411), 3283 states have return successors, (51104), 7314 states have call predecessors, (51104), 4400 states have call successors, (51104) [2025-01-10 02:30:15,828 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21139 states to 21139 states and 69500 transitions. [2025-01-10 02:30:15,844 INFO L78 Accepts]: Start accepts. Automaton has 21139 states and 69500 transitions. Word has length 59 [2025-01-10 02:30:15,845 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-10 02:30:15,845 INFO L471 AbstractCegarLoop]: Abstraction has 21139 states and 69500 transitions. [2025-01-10 02:30:15,845 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 6.2) internal successors, (31), 5 states have internal predecessors, (31), 3 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2025-01-10 02:30:15,845 INFO L276 IsEmpty]: Start isEmpty. Operand 21139 states and 69500 transitions. [2025-01-10 02:30:15,848 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2025-01-10 02:30:15,849 INFO L210 NwaCegarLoop]: Found error trace [2025-01-10 02:30:15,849 INFO L218 NwaCegarLoop]: trace histogram [9, 7, 5, 5, 5, 5, 4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-10 02:30:15,849 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2025-01-10 02:30:15,849 INFO L396 AbstractCegarLoop]: === Iteration 23 === Targeting ackermannErr6ASSERT_VIOLATIONINTEGER_OVERFLOW === [ackermannErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ackermannErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ackermannErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 5 more)] === [2025-01-10 02:30:15,849 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-10 02:30:15,849 INFO L85 PathProgramCache]: Analyzing trace with hash -295397423, now seen corresponding path program 2 times [2025-01-10 02:30:15,849 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-10 02:30:15,850 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1984461886] [2025-01-10 02:30:15,850 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-01-10 02:30:15,850 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-10 02:30:15,854 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 80 statements into 2 equivalence classes. [2025-01-10 02:30:15,863 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 80 of 80 statements. [2025-01-10 02:30:15,867 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-01-10 02:30:15,868 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-10 02:30:16,060 INFO L134 CoverageAnalysis]: Checked inductivity of 163 backedges. 83 proven. 19 refuted. 0 times theorem prover too weak. 61 trivial. 0 not checked. [2025-01-10 02:30:16,060 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-10 02:30:16,060 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1984461886] [2025-01-10 02:30:16,060 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1984461886] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-10 02:30:16,060 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1557485557] [2025-01-10 02:30:16,060 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-01-10 02:30:16,061 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-10 02:30:16,061 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-10 02:30:16,062 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) [2025-01-10 02:30:16,063 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 [2025-01-10 02:30:16,095 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 80 statements into 2 equivalence classes. [2025-01-10 02:30:16,111 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 80 of 80 statements. [2025-01-10 02:30:16,111 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-01-10 02:30:16,111 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-10 02:30:16,112 INFO L256 TraceCheckSpWp]: Trace formula consists of 201 conjuncts, 19 conjuncts are in the unsatisfiable core [2025-01-10 02:30:16,113 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-10 02:30:16,155 INFO L134 CoverageAnalysis]: Checked inductivity of 163 backedges. 75 proven. 22 refuted. 0 times theorem prover too weak. 66 trivial. 0 not checked. [2025-01-10 02:30:16,155 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-01-10 02:30:16,801 INFO L134 CoverageAnalysis]: Checked inductivity of 163 backedges. 94 proven. 8 refuted. 0 times theorem prover too weak. 61 trivial. 0 not checked. [2025-01-10 02:30:16,801 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1557485557] provided 0 perfect and 2 imperfect interpolant sequences [2025-01-10 02:30:16,801 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-01-10 02:30:16,801 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 14, 16] total 31 [2025-01-10 02:30:16,801 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1635596656] [2025-01-10 02:30:16,801 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-01-10 02:30:16,802 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2025-01-10 02:30:16,802 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-10 02:30:16,802 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2025-01-10 02:30:16,802 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=120, Invalid=872, Unknown=0, NotChecked=0, Total=992 [2025-01-10 02:30:16,803 INFO L87 Difference]: Start difference. First operand 21139 states and 69500 transitions. Second operand has 32 states, 31 states have (on average 2.3870967741935485) internal successors, (74), 22 states have internal predecessors, (74), 7 states have call successors, (9), 5 states have call predecessors, (9), 8 states have return successors, (11), 10 states have call predecessors, (11), 3 states have call successors, (11) [2025-01-10 02:30:20,340 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-10 02:30:20,340 INFO L93 Difference]: Finished difference Result 34877 states and 114689 transitions. [2025-01-10 02:30:20,340 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 50 states. [2025-01-10 02:30:20,340 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 31 states have (on average 2.3870967741935485) internal successors, (74), 22 states have internal predecessors, (74), 7 states have call successors, (9), 5 states have call predecessors, (9), 8 states have return successors, (11), 10 states have call predecessors, (11), 3 states have call successors, (11) Word has length 80 [2025-01-10 02:30:20,341 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-10 02:30:20,410 INFO L225 Difference]: With dead ends: 34877 [2025-01-10 02:30:20,410 INFO L226 Difference]: Without dead ends: 14268 [2025-01-10 02:30:20,683 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 224 GetRequests, 150 SyntacticMatches, 0 SemanticMatches, 74 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1263 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=1007, Invalid=4693, Unknown=0, NotChecked=0, Total=5700 [2025-01-10 02:30:20,684 INFO L435 NwaCegarLoop]: 43 mSDtfsCounter, 185 mSDsluCounter, 331 mSDsCounter, 0 mSdLazyCounter, 732 mSolverCounterSat, 141 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 185 SdHoareTripleChecker+Valid, 374 SdHoareTripleChecker+Invalid, 873 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 141 IncrementalHoareTripleChecker+Valid, 732 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2025-01-10 02:30:20,684 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [185 Valid, 374 Invalid, 873 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [141 Valid, 732 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2025-01-10 02:30:20,691 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14268 states. [2025-01-10 02:30:21,880 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14268 to 12111. [2025-01-10 02:30:21,892 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12111 states, 8057 states have (on average 1.0616854908774978) internal successors, (8554), 8217 states have internal predecessors, (8554), 2556 states have call successors, (2556), 371 states have call predecessors, (2556), 1494 states have return successors, (6850), 3522 states have call predecessors, (6850), 2549 states have call successors, (6850) [2025-01-10 02:30:21,927 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12111 states to 12111 states and 17960 transitions. [2025-01-10 02:30:21,944 INFO L78 Accepts]: Start accepts. Automaton has 12111 states and 17960 transitions. Word has length 80 [2025-01-10 02:30:21,944 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-10 02:30:21,944 INFO L471 AbstractCegarLoop]: Abstraction has 12111 states and 17960 transitions. [2025-01-10 02:30:21,945 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 31 states have (on average 2.3870967741935485) internal successors, (74), 22 states have internal predecessors, (74), 7 states have call successors, (9), 5 states have call predecessors, (9), 8 states have return successors, (11), 10 states have call predecessors, (11), 3 states have call successors, (11) [2025-01-10 02:30:21,945 INFO L276 IsEmpty]: Start isEmpty. Operand 12111 states and 17960 transitions. [2025-01-10 02:30:21,947 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2025-01-10 02:30:21,947 INFO L210 NwaCegarLoop]: Found error trace [2025-01-10 02:30:21,947 INFO L218 NwaCegarLoop]: trace histogram [8, 7, 6, 6, 6, 5, 5, 5, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-10 02:30:21,953 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Ended with exit code 0 [2025-01-10 02:30:22,147 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22,18 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-10 02:30:22,147 INFO L396 AbstractCegarLoop]: === Iteration 24 === Targeting ackermannErr6ASSERT_VIOLATIONINTEGER_OVERFLOW === [ackermannErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ackermannErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ackermannErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 5 more)] === [2025-01-10 02:30:22,148 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-10 02:30:22,148 INFO L85 PathProgramCache]: Analyzing trace with hash -1699922576, now seen corresponding path program 3 times [2025-01-10 02:30:22,148 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-10 02:30:22,148 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1601188264] [2025-01-10 02:30:22,148 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-01-10 02:30:22,148 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-10 02:30:22,151 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 68 statements into 8 equivalence classes. [2025-01-10 02:30:22,160 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 8 check-sat command(s) and asserted 68 of 68 statements. [2025-01-10 02:30:22,160 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 8 check-sat command(s) [2025-01-10 02:30:22,160 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-10 02:30:22,305 INFO L134 CoverageAnalysis]: Checked inductivity of 144 backedges. 41 proven. 46 refuted. 0 times theorem prover too weak. 57 trivial. 0 not checked. [2025-01-10 02:30:22,305 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-10 02:30:22,306 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1601188264] [2025-01-10 02:30:22,306 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1601188264] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-10 02:30:22,306 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [662433271] [2025-01-10 02:30:22,306 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-01-10 02:30:22,306 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-10 02:30:22,306 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-10 02:30:22,309 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) [2025-01-10 02:30:22,311 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 [2025-01-10 02:30:22,346 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 68 statements into 8 equivalence classes. [2025-01-10 02:30:22,361 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 8 check-sat command(s) and asserted 68 of 68 statements. [2025-01-10 02:30:22,362 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 8 check-sat command(s) [2025-01-10 02:30:22,362 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-10 02:30:22,362 INFO L256 TraceCheckSpWp]: Trace formula consists of 167 conjuncts, 17 conjuncts are in the unsatisfiable core [2025-01-10 02:30:22,364 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-10 02:30:22,572 INFO L134 CoverageAnalysis]: Checked inductivity of 144 backedges. 60 proven. 79 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2025-01-10 02:30:22,572 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-01-10 02:30:22,880 INFO L134 CoverageAnalysis]: Checked inductivity of 144 backedges. 64 proven. 75 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2025-01-10 02:30:22,880 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [662433271] provided 0 perfect and 2 imperfect interpolant sequences [2025-01-10 02:30:22,880 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-01-10 02:30:22,880 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 16, 16] total 42 [2025-01-10 02:30:22,880 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1292648378] [2025-01-10 02:30:22,881 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-01-10 02:30:22,881 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 42 states [2025-01-10 02:30:22,881 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-10 02:30:22,881 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 42 interpolants. [2025-01-10 02:30:22,882 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=192, Invalid=1530, Unknown=0, NotChecked=0, Total=1722 [2025-01-10 02:30:22,882 INFO L87 Difference]: Start difference. First operand 12111 states and 17960 transitions. Second operand has 42 states, 42 states have (on average 3.142857142857143) internal successors, (132), 29 states have internal predecessors, (132), 16 states have call successors, (18), 13 states have call predecessors, (18), 6 states have return successors, (6), 6 states have call predecessors, (6), 3 states have call successors, (6) [2025-01-10 02:30:25,271 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-10 02:30:25,271 INFO L93 Difference]: Finished difference Result 23883 states and 41910 transitions. [2025-01-10 02:30:25,272 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2025-01-10 02:30:25,272 INFO L78 Accepts]: Start accepts. Automaton has has 42 states, 42 states have (on average 3.142857142857143) internal successors, (132), 29 states have internal predecessors, (132), 16 states have call successors, (18), 13 states have call predecessors, (18), 6 states have return successors, (6), 6 states have call predecessors, (6), 3 states have call successors, (6) Word has length 68 [2025-01-10 02:30:25,272 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-10 02:30:25,336 INFO L225 Difference]: With dead ends: 23883 [2025-01-10 02:30:25,336 INFO L226 Difference]: Without dead ends: 12552 [2025-01-10 02:30:25,409 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 195 GetRequests, 121 SyntacticMatches, 0 SemanticMatches, 74 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1072 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=978, Invalid=4722, Unknown=0, NotChecked=0, Total=5700 [2025-01-10 02:30:25,410 INFO L435 NwaCegarLoop]: 15 mSDtfsCounter, 417 mSDsluCounter, 166 mSDsCounter, 0 mSdLazyCounter, 767 mSolverCounterSat, 262 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 417 SdHoareTripleChecker+Valid, 181 SdHoareTripleChecker+Invalid, 1029 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 262 IncrementalHoareTripleChecker+Valid, 767 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2025-01-10 02:30:25,410 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [417 Valid, 181 Invalid, 1029 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [262 Valid, 767 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2025-01-10 02:30:25,416 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12552 states. [2025-01-10 02:30:26,896 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12552 to 12260. [2025-01-10 02:30:26,905 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12260 states, 7994 states have (on average 1.0486614961220915) internal successors, (8383), 8162 states have internal predecessors, (8383), 2524 states have call successors, (2524), 319 states have call predecessors, (2524), 1739 states have return successors, (6667), 3778 states have call predecessors, (6667), 2518 states have call successors, (6667) [2025-01-10 02:30:26,934 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12260 states to 12260 states and 17574 transitions. [2025-01-10 02:30:26,944 INFO L78 Accepts]: Start accepts. Automaton has 12260 states and 17574 transitions. Word has length 68 [2025-01-10 02:30:26,945 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-10 02:30:26,945 INFO L471 AbstractCegarLoop]: Abstraction has 12260 states and 17574 transitions. [2025-01-10 02:30:26,945 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 42 states, 42 states have (on average 3.142857142857143) internal successors, (132), 29 states have internal predecessors, (132), 16 states have call successors, (18), 13 states have call predecessors, (18), 6 states have return successors, (6), 6 states have call predecessors, (6), 3 states have call successors, (6) [2025-01-10 02:30:26,945 INFO L276 IsEmpty]: Start isEmpty. Operand 12260 states and 17574 transitions. [2025-01-10 02:30:26,946 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2025-01-10 02:30:26,947 INFO L210 NwaCegarLoop]: Found error trace [2025-01-10 02:30:26,947 INFO L218 NwaCegarLoop]: trace histogram [9, 7, 5, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1] [2025-01-10 02:30:26,952 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 [2025-01-10 02:30:27,147 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable23 [2025-01-10 02:30:27,150 INFO L396 AbstractCegarLoop]: === Iteration 25 === Targeting ackermannErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ackermannErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ackermannErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ackermannErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 5 more)] === [2025-01-10 02:30:27,150 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-10 02:30:27,150 INFO L85 PathProgramCache]: Analyzing trace with hash -444123128, now seen corresponding path program 2 times [2025-01-10 02:30:27,150 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-10 02:30:27,150 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1028594379] [2025-01-10 02:30:27,150 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-01-10 02:30:27,150 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-10 02:30:27,156 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 81 statements into 2 equivalence classes. [2025-01-10 02:30:27,160 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 81 of 81 statements. [2025-01-10 02:30:27,160 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-01-10 02:30:27,160 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-10 02:30:27,211 INFO L134 CoverageAnalysis]: Checked inductivity of 162 backedges. 78 proven. 31 refuted. 0 times theorem prover too weak. 53 trivial. 0 not checked. [2025-01-10 02:30:27,211 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-10 02:30:27,212 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1028594379] [2025-01-10 02:30:27,212 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1028594379] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-10 02:30:27,212 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [134296703] [2025-01-10 02:30:27,212 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-01-10 02:30:27,212 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-10 02:30:27,212 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-10 02:30:27,214 INFO L229 MonitoredProcess]: Starting monitored process 20 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-01-10 02:30:27,215 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2025-01-10 02:30:27,252 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 81 statements into 2 equivalence classes. [2025-01-10 02:30:27,268 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 81 of 81 statements. [2025-01-10 02:30:27,268 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-01-10 02:30:27,268 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-10 02:30:27,269 INFO L256 TraceCheckSpWp]: Trace formula consists of 212 conjuncts, 7 conjuncts are in the unsatisfiable core [2025-01-10 02:30:27,270 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-10 02:30:27,303 INFO L134 CoverageAnalysis]: Checked inductivity of 162 backedges. 85 proven. 15 refuted. 0 times theorem prover too weak. 62 trivial. 0 not checked. [2025-01-10 02:30:27,303 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-01-10 02:30:27,546 INFO L134 CoverageAnalysis]: Checked inductivity of 162 backedges. 85 proven. 26 refuted. 0 times theorem prover too weak. 51 trivial. 0 not checked. [2025-01-10 02:30:27,546 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [134296703] provided 0 perfect and 2 imperfect interpolant sequences [2025-01-10 02:30:27,546 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-01-10 02:30:27,546 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 6, 8] total 11 [2025-01-10 02:30:27,546 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [938024315] [2025-01-10 02:30:27,546 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-01-10 02:30:27,546 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2025-01-10 02:30:27,547 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-10 02:30:27,547 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2025-01-10 02:30:27,547 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2025-01-10 02:30:27,547 INFO L87 Difference]: Start difference. First operand 12260 states and 17574 transitions. Second operand has 11 states, 11 states have (on average 6.363636363636363) internal successors, (70), 11 states have internal predecessors, (70), 10 states have call successors, (12), 2 states have call predecessors, (12), 6 states have return successors, (12), 5 states have call predecessors, (12), 9 states have call successors, (12) [2025-01-10 02:30:29,343 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-10 02:30:29,344 INFO L93 Difference]: Finished difference Result 26416 states and 40295 transitions. [2025-01-10 02:30:29,344 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2025-01-10 02:30:29,344 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 6.363636363636363) internal successors, (70), 11 states have internal predecessors, (70), 10 states have call successors, (12), 2 states have call predecessors, (12), 6 states have return successors, (12), 5 states have call predecessors, (12), 9 states have call successors, (12) Word has length 81 [2025-01-10 02:30:29,344 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-10 02:30:29,405 INFO L225 Difference]: With dead ends: 26416 [2025-01-10 02:30:29,405 INFO L226 Difference]: Without dead ends: 14807 [2025-01-10 02:30:29,450 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 176 GetRequests, 159 SyntacticMatches, 3 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=81, Invalid=159, Unknown=0, NotChecked=0, Total=240 [2025-01-10 02:30:29,450 INFO L435 NwaCegarLoop]: 31 mSDtfsCounter, 29 mSDsluCounter, 76 mSDsCounter, 0 mSdLazyCounter, 125 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 29 SdHoareTripleChecker+Valid, 107 SdHoareTripleChecker+Invalid, 143 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 125 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-01-10 02:30:29,450 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [29 Valid, 107 Invalid, 143 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 125 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-01-10 02:30:29,456 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14807 states. [2025-01-10 02:30:30,830 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14807 to 12025. [2025-01-10 02:30:30,841 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12025 states, 7854 states have (on average 1.049528902470079) internal successors, (8243), 8022 states have internal predecessors, (8243), 2474 states have call successors, (2474), 319 states have call predecessors, (2474), 1694 states have return successors, (6476), 3683 states have call predecessors, (6476), 2441 states have call successors, (6476) [2025-01-10 02:30:30,870 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12025 states to 12025 states and 17193 transitions. [2025-01-10 02:30:30,886 INFO L78 Accepts]: Start accepts. Automaton has 12025 states and 17193 transitions. Word has length 81 [2025-01-10 02:30:30,887 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-10 02:30:30,887 INFO L471 AbstractCegarLoop]: Abstraction has 12025 states and 17193 transitions. [2025-01-10 02:30:30,887 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.363636363636363) internal successors, (70), 11 states have internal predecessors, (70), 10 states have call successors, (12), 2 states have call predecessors, (12), 6 states have return successors, (12), 5 states have call predecessors, (12), 9 states have call successors, (12) [2025-01-10 02:30:30,887 INFO L276 IsEmpty]: Start isEmpty. Operand 12025 states and 17193 transitions. [2025-01-10 02:30:30,889 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2025-01-10 02:30:30,889 INFO L210 NwaCegarLoop]: Found error trace [2025-01-10 02:30:30,889 INFO L218 NwaCegarLoop]: trace histogram [11, 9, 6, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1] [2025-01-10 02:30:30,895 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Forceful destruction successful, exit code 0 [2025-01-10 02:30:31,089 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24,20 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-10 02:30:31,089 INFO L396 AbstractCegarLoop]: === Iteration 26 === Targeting ackermannErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ackermannErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ackermannErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ackermannErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 5 more)] === [2025-01-10 02:30:31,090 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-10 02:30:31,090 INFO L85 PathProgramCache]: Analyzing trace with hash -394691490, now seen corresponding path program 3 times [2025-01-10 02:30:31,090 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-10 02:30:31,090 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [587052656] [2025-01-10 02:30:31,090 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-01-10 02:30:31,090 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-10 02:30:31,094 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 100 statements into 7 equivalence classes. [2025-01-10 02:30:31,101 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s) and asserted 86 of 100 statements. [2025-01-10 02:30:31,101 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s) [2025-01-10 02:30:31,101 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-10 02:30:31,174 INFO L134 CoverageAnalysis]: Checked inductivity of 266 backedges. 127 proven. 43 refuted. 0 times theorem prover too weak. 96 trivial. 0 not checked. [2025-01-10 02:30:31,174 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-10 02:30:31,175 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [587052656] [2025-01-10 02:30:31,175 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [587052656] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-10 02:30:31,175 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [11942237] [2025-01-10 02:30:31,175 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-01-10 02:30:31,175 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-10 02:30:31,175 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-10 02:30:31,177 INFO L229 MonitoredProcess]: Starting monitored process 21 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-01-10 02:30:31,178 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2025-01-10 02:30:31,219 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 100 statements into 7 equivalence classes. [2025-01-10 02:30:31,238 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s) and asserted 86 of 100 statements. [2025-01-10 02:30:31,238 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s) [2025-01-10 02:30:31,238 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-10 02:30:31,239 INFO L256 TraceCheckSpWp]: Trace formula consists of 226 conjuncts, 12 conjuncts are in the unsatisfiable core [2025-01-10 02:30:31,240 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-10 02:30:31,288 INFO L134 CoverageAnalysis]: Checked inductivity of 266 backedges. 153 proven. 26 refuted. 0 times theorem prover too weak. 87 trivial. 0 not checked. [2025-01-10 02:30:31,288 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-01-10 02:30:31,787 INFO L134 CoverageAnalysis]: Checked inductivity of 266 backedges. 123 proven. 57 refuted. 0 times theorem prover too weak. 86 trivial. 0 not checked. [2025-01-10 02:30:31,787 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [11942237] provided 0 perfect and 2 imperfect interpolant sequences [2025-01-10 02:30:31,788 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-01-10 02:30:31,788 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 11] total 15 [2025-01-10 02:30:31,788 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [910805519] [2025-01-10 02:30:31,788 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-01-10 02:30:31,788 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2025-01-10 02:30:31,788 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-10 02:30:31,788 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2025-01-10 02:30:31,788 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=161, Unknown=0, NotChecked=0, Total=210 [2025-01-10 02:30:31,789 INFO L87 Difference]: Start difference. First operand 12025 states and 17193 transitions. Second operand has 15 states, 15 states have (on average 4.866666666666666) internal successors, (73), 15 states have internal predecessors, (73), 7 states have call successors, (11), 2 states have call predecessors, (11), 7 states have return successors, (13), 4 states have call predecessors, (13), 7 states have call successors, (13) [2025-01-10 02:30:33,370 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-10 02:30:33,370 INFO L93 Difference]: Finished difference Result 24746 states and 42167 transitions. [2025-01-10 02:30:33,371 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2025-01-10 02:30:33,371 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 4.866666666666666) internal successors, (73), 15 states have internal predecessors, (73), 7 states have call successors, (11), 2 states have call predecessors, (11), 7 states have return successors, (13), 4 states have call predecessors, (13), 7 states have call successors, (13) Word has length 100 [2025-01-10 02:30:33,371 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-10 02:30:33,438 INFO L225 Difference]: With dead ends: 24746 [2025-01-10 02:30:33,438 INFO L226 Difference]: Without dead ends: 13486 [2025-01-10 02:30:33,490 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 218 GetRequests, 195 SyntacticMatches, 6 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 56 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=98, Invalid=244, Unknown=0, NotChecked=0, Total=342 [2025-01-10 02:30:33,491 INFO L435 NwaCegarLoop]: 34 mSDtfsCounter, 69 mSDsluCounter, 115 mSDsCounter, 0 mSdLazyCounter, 172 mSolverCounterSat, 32 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 69 SdHoareTripleChecker+Valid, 149 SdHoareTripleChecker+Invalid, 204 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 32 IncrementalHoareTripleChecker+Valid, 172 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-01-10 02:30:33,491 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [69 Valid, 149 Invalid, 204 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [32 Valid, 172 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-01-10 02:30:33,497 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13486 states. [2025-01-10 02:30:35,080 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13486 to 11826. [2025-01-10 02:30:35,089 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11826 states, 7725 states have (on average 1.0384466019417475) internal successors, (8022), 7860 states have internal predecessors, (8022), 2444 states have call successors, (2444), 317 states have call predecessors, (2444), 1654 states have return successors, (5411), 3648 states have call predecessors, (5411), 2412 states have call successors, (5411) [2025-01-10 02:30:35,118 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11826 states to 11826 states and 15877 transitions. [2025-01-10 02:30:35,135 INFO L78 Accepts]: Start accepts. Automaton has 11826 states and 15877 transitions. Word has length 100 [2025-01-10 02:30:35,135 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-10 02:30:35,135 INFO L471 AbstractCegarLoop]: Abstraction has 11826 states and 15877 transitions. [2025-01-10 02:30:35,135 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 4.866666666666666) internal successors, (73), 15 states have internal predecessors, (73), 7 states have call successors, (11), 2 states have call predecessors, (11), 7 states have return successors, (13), 4 states have call predecessors, (13), 7 states have call successors, (13) [2025-01-10 02:30:35,135 INFO L276 IsEmpty]: Start isEmpty. Operand 11826 states and 15877 transitions. [2025-01-10 02:30:35,138 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2025-01-10 02:30:35,138 INFO L210 NwaCegarLoop]: Found error trace [2025-01-10 02:30:35,138 INFO L218 NwaCegarLoop]: trace histogram [12, 10, 8, 8, 8, 7, 7, 7, 5, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-10 02:30:35,144 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Ended with exit code 0 [2025-01-10 02:30:35,338 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable25 [2025-01-10 02:30:35,339 INFO L396 AbstractCegarLoop]: === Iteration 27 === Targeting ackermannErr6ASSERT_VIOLATIONINTEGER_OVERFLOW === [ackermannErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ackermannErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ackermannErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 5 more)] === [2025-01-10 02:30:35,339 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-10 02:30:35,339 INFO L85 PathProgramCache]: Analyzing trace with hash 1664904531, now seen corresponding path program 3 times [2025-01-10 02:30:35,339 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-10 02:30:35,339 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1312479183] [2025-01-10 02:30:35,339 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-01-10 02:30:35,339 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-10 02:30:35,343 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 104 statements into 10 equivalence classes. [2025-01-10 02:30:35,355 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 10 check-sat command(s) and asserted 104 of 104 statements. [2025-01-10 02:30:35,356 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 10 check-sat command(s) [2025-01-10 02:30:35,356 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-10 02:30:35,676 INFO L134 CoverageAnalysis]: Checked inductivity of 331 backedges. 179 proven. 91 refuted. 0 times theorem prover too weak. 61 trivial. 0 not checked. [2025-01-10 02:30:35,677 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-10 02:30:35,677 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1312479183] [2025-01-10 02:30:35,677 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1312479183] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-10 02:30:35,677 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1746249618] [2025-01-10 02:30:35,677 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-01-10 02:30:35,677 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-10 02:30:35,677 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-10 02:30:35,679 INFO L229 MonitoredProcess]: Starting monitored process 22 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-01-10 02:30:35,680 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process [2025-01-10 02:30:35,727 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 104 statements into 10 equivalence classes. [2025-01-10 02:30:35,754 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 10 check-sat command(s) and asserted 104 of 104 statements. [2025-01-10 02:30:35,755 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 10 check-sat command(s) [2025-01-10 02:30:35,755 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-10 02:30:35,756 INFO L256 TraceCheckSpWp]: Trace formula consists of 249 conjuncts, 25 conjuncts are in the unsatisfiable core [2025-01-10 02:30:35,758 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-10 02:30:35,815 INFO L134 CoverageAnalysis]: Checked inductivity of 331 backedges. 171 proven. 94 refuted. 0 times theorem prover too weak. 66 trivial. 0 not checked. [2025-01-10 02:30:35,816 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-01-10 02:30:36,585 INFO L134 CoverageAnalysis]: Checked inductivity of 331 backedges. 191 proven. 79 refuted. 0 times theorem prover too weak. 61 trivial. 0 not checked. [2025-01-10 02:30:36,585 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1746249618] provided 0 perfect and 2 imperfect interpolant sequences [2025-01-10 02:30:36,585 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-01-10 02:30:36,585 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 20, 22] total 43 [2025-01-10 02:30:36,586 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1119455277] [2025-01-10 02:30:36,586 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-01-10 02:30:36,587 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 44 states [2025-01-10 02:30:36,587 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-10 02:30:36,587 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 44 interpolants. [2025-01-10 02:30:36,588 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=229, Invalid=1663, Unknown=0, NotChecked=0, Total=1892 [2025-01-10 02:30:36,588 INFO L87 Difference]: Start difference. First operand 11826 states and 15877 transitions. Second operand has 44 states, 43 states have (on average 2.697674418604651) internal successors, (116), 28 states have internal predecessors, (116), 13 states have call successors, (15), 11 states have call predecessors, (15), 8 states have return successors, (11), 10 states have call predecessors, (11), 3 states have call successors, (11) [2025-01-10 02:30:38,586 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-10 02:30:38,587 INFO L93 Difference]: Finished difference Result 20755 states and 29254 transitions. [2025-01-10 02:30:38,587 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2025-01-10 02:30:38,587 INFO L78 Accepts]: Start accepts. Automaton has has 44 states, 43 states have (on average 2.697674418604651) internal successors, (116), 28 states have internal predecessors, (116), 13 states have call successors, (15), 11 states have call predecessors, (15), 8 states have return successors, (11), 10 states have call predecessors, (11), 3 states have call successors, (11) Word has length 104 [2025-01-10 02:30:38,587 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-10 02:30:38,637 INFO L225 Difference]: With dead ends: 20755 [2025-01-10 02:30:38,638 INFO L226 Difference]: Without dead ends: 9899 [2025-01-10 02:30:38,677 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 272 GetRequests, 190 SyntacticMatches, 0 SemanticMatches, 82 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1527 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=1344, Invalid=5628, Unknown=0, NotChecked=0, Total=6972 [2025-01-10 02:30:38,677 INFO L435 NwaCegarLoop]: 35 mSDtfsCounter, 169 mSDsluCounter, 377 mSDsCounter, 0 mSdLazyCounter, 887 mSolverCounterSat, 120 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 169 SdHoareTripleChecker+Valid, 412 SdHoareTripleChecker+Invalid, 1007 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 120 IncrementalHoareTripleChecker+Valid, 887 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2025-01-10 02:30:38,678 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [169 Valid, 412 Invalid, 1007 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [120 Valid, 887 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2025-01-10 02:30:38,682 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9899 states. [2025-01-10 02:30:39,870 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9899 to 9799. [2025-01-10 02:30:39,878 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9799 states, 6494 states have (on average 1.0401909454881428) internal successors, (6755), 6643 states have internal predecessors, (6755), 1967 states have call successors, (1967), 300 states have call predecessors, (1967), 1335 states have return successors, (3519), 2855 states have call predecessors, (3519), 1944 states have call successors, (3519) [2025-01-10 02:30:39,897 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9799 states to 9799 states and 12241 transitions. [2025-01-10 02:30:39,912 INFO L78 Accepts]: Start accepts. Automaton has 9799 states and 12241 transitions. Word has length 104 [2025-01-10 02:30:39,912 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-10 02:30:39,912 INFO L471 AbstractCegarLoop]: Abstraction has 9799 states and 12241 transitions. [2025-01-10 02:30:39,912 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 44 states, 43 states have (on average 2.697674418604651) internal successors, (116), 28 states have internal predecessors, (116), 13 states have call successors, (15), 11 states have call predecessors, (15), 8 states have return successors, (11), 10 states have call predecessors, (11), 3 states have call successors, (11) [2025-01-10 02:30:39,912 INFO L276 IsEmpty]: Start isEmpty. Operand 9799 states and 12241 transitions. [2025-01-10 02:30:39,914 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2025-01-10 02:30:39,914 INFO L210 NwaCegarLoop]: Found error trace [2025-01-10 02:30:39,914 INFO L218 NwaCegarLoop]: trace histogram [10, 8, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-10 02:30:39,921 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Forceful destruction successful, exit code 0 [2025-01-10 02:30:40,115 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable26 [2025-01-10 02:30:40,115 INFO L396 AbstractCegarLoop]: === Iteration 28 === Targeting ackermannErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ackermannErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ackermannErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ackermannErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 5 more)] === [2025-01-10 02:30:40,115 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-10 02:30:40,115 INFO L85 PathProgramCache]: Analyzing trace with hash -1846631051, now seen corresponding path program 4 times [2025-01-10 02:30:40,115 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-10 02:30:40,115 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [562581433] [2025-01-10 02:30:40,115 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-01-10 02:30:40,115 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-10 02:30:40,119 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 91 statements into 2 equivalence classes. [2025-01-10 02:30:40,128 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) and asserted 91 of 91 statements. [2025-01-10 02:30:40,129 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) [2025-01-10 02:30:40,129 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-10 02:30:40,388 INFO L134 CoverageAnalysis]: Checked inductivity of 221 backedges. 43 proven. 71 refuted. 0 times theorem prover too weak. 107 trivial. 0 not checked. [2025-01-10 02:30:40,388 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-10 02:30:40,388 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [562581433] [2025-01-10 02:30:40,389 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [562581433] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-10 02:30:40,389 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [204402752] [2025-01-10 02:30:40,389 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-01-10 02:30:40,389 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-10 02:30:40,389 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-10 02:30:40,391 INFO L229 MonitoredProcess]: Starting monitored process 23 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-01-10 02:30:40,392 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Waiting until timeout for monitored process [2025-01-10 02:30:40,444 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 91 statements into 2 equivalence classes. [2025-01-10 02:30:40,462 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) and asserted 91 of 91 statements. [2025-01-10 02:30:40,462 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) [2025-01-10 02:30:40,463 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-10 02:30:40,463 INFO L256 TraceCheckSpWp]: Trace formula consists of 234 conjuncts, 27 conjuncts are in the unsatisfiable core [2025-01-10 02:30:40,465 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-10 02:30:40,508 INFO L134 CoverageAnalysis]: Checked inductivity of 221 backedges. 34 proven. 71 refuted. 0 times theorem prover too weak. 116 trivial. 0 not checked. [2025-01-10 02:30:40,508 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-01-10 02:30:41,746 INFO L134 CoverageAnalysis]: Checked inductivity of 221 backedges. 42 proven. 93 refuted. 0 times theorem prover too weak. 86 trivial. 0 not checked. [2025-01-10 02:30:41,747 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [204402752] provided 0 perfect and 2 imperfect interpolant sequences [2025-01-10 02:30:41,747 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-01-10 02:30:41,747 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 17, 23] total 40 [2025-01-10 02:30:41,747 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [881421651] [2025-01-10 02:30:41,747 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-01-10 02:30:41,747 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 41 states [2025-01-10 02:30:41,747 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-10 02:30:41,747 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 41 interpolants. [2025-01-10 02:30:41,748 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=196, Invalid=1444, Unknown=0, NotChecked=0, Total=1640 [2025-01-10 02:30:41,748 INFO L87 Difference]: Start difference. First operand 9799 states and 12241 transitions. Second operand has 41 states, 40 states have (on average 1.875) internal successors, (75), 31 states have internal predecessors, (75), 9 states have call successors, (11), 3 states have call predecessors, (11), 13 states have return successors, (16), 16 states have call predecessors, (16), 7 states have call successors, (16) [2025-01-10 02:30:47,052 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-10 02:30:47,052 INFO L93 Difference]: Finished difference Result 36093 states and 53702 transitions. [2025-01-10 02:30:47,053 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 129 states. [2025-01-10 02:30:47,053 INFO L78 Accepts]: Start accepts. Automaton has has 41 states, 40 states have (on average 1.875) internal successors, (75), 31 states have internal predecessors, (75), 9 states have call successors, (11), 3 states have call predecessors, (11), 13 states have return successors, (16), 16 states have call predecessors, (16), 7 states have call successors, (16) Word has length 91 [2025-01-10 02:30:47,053 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-10 02:30:47,197 INFO L225 Difference]: With dead ends: 36093 [2025-01-10 02:30:47,197 INFO L226 Difference]: Without dead ends: 34991 [2025-01-10 02:30:47,227 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 329 GetRequests, 166 SyntacticMatches, 0 SemanticMatches, 163 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8991 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=4423, Invalid=22637, Unknown=0, NotChecked=0, Total=27060 [2025-01-10 02:30:47,227 INFO L435 NwaCegarLoop]: 22 mSDtfsCounter, 324 mSDsluCounter, 313 mSDsCounter, 0 mSdLazyCounter, 655 mSolverCounterSat, 385 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 347 SdHoareTripleChecker+Valid, 335 SdHoareTripleChecker+Invalid, 1040 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 385 IncrementalHoareTripleChecker+Valid, 655 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2025-01-10 02:30:47,227 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [347 Valid, 335 Invalid, 1040 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [385 Valid, 655 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2025-01-10 02:30:47,244 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34991 states. [2025-01-10 02:30:50,302 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34991 to 21969. [2025-01-10 02:30:50,318 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21969 states, 13960 states have (on average 1.021131805157593) internal successors, (14255), 14071 states have internal predecessors, (14255), 4631 states have call successors, (4631), 424 states have call predecessors, (4631), 3375 states have return successors, (12373), 7473 states have call predecessors, (12373), 4589 states have call successors, (12373) [2025-01-10 02:30:50,372 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21969 states to 21969 states and 31259 transitions. [2025-01-10 02:30:50,393 INFO L78 Accepts]: Start accepts. Automaton has 21969 states and 31259 transitions. Word has length 91 [2025-01-10 02:30:50,393 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-10 02:30:50,393 INFO L471 AbstractCegarLoop]: Abstraction has 21969 states and 31259 transitions. [2025-01-10 02:30:50,394 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 41 states, 40 states have (on average 1.875) internal successors, (75), 31 states have internal predecessors, (75), 9 states have call successors, (11), 3 states have call predecessors, (11), 13 states have return successors, (16), 16 states have call predecessors, (16), 7 states have call successors, (16) [2025-01-10 02:30:50,394 INFO L276 IsEmpty]: Start isEmpty. Operand 21969 states and 31259 transitions. [2025-01-10 02:30:50,398 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2025-01-10 02:30:50,398 INFO L210 NwaCegarLoop]: Found error trace [2025-01-10 02:30:50,398 INFO L218 NwaCegarLoop]: trace histogram [15, 15, 15, 15, 15, 14, 14, 14, 1, 1, 1, 1, 1, 1] [2025-01-10 02:30:50,404 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Forceful destruction successful, exit code 0 [2025-01-10 02:30:50,598 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 23 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable27 [2025-01-10 02:30:50,598 INFO L396 AbstractCegarLoop]: === Iteration 29 === Targeting ackermannErr6ASSERT_VIOLATIONINTEGER_OVERFLOW === [ackermannErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ackermannErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ackermannErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 5 more)] === [2025-01-10 02:30:50,599 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-10 02:30:50,599 INFO L85 PathProgramCache]: Analyzing trace with hash 1754739570, now seen corresponding path program 3 times [2025-01-10 02:30:50,599 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-10 02:30:50,599 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2126590769] [2025-01-10 02:30:50,599 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-01-10 02:30:50,599 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-10 02:30:50,603 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 123 statements into 15 equivalence classes. [2025-01-10 02:30:50,623 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 15 check-sat command(s) and asserted 123 of 123 statements. [2025-01-10 02:30:50,623 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 15 check-sat command(s) [2025-01-10 02:30:50,624 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-10 02:30:51,027 INFO L134 CoverageAnalysis]: Checked inductivity of 812 backedges. 0 proven. 812 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-10 02:30:51,027 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-10 02:30:51,027 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2126590769] [2025-01-10 02:30:51,027 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2126590769] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-10 02:30:51,027 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2104416049] [2025-01-10 02:30:51,027 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-01-10 02:30:51,027 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-10 02:30:51,027 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-10 02:30:51,029 INFO L229 MonitoredProcess]: Starting monitored process 24 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-01-10 02:30:51,030 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Waiting until timeout for monitored process [2025-01-10 02:30:51,093 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 123 statements into 15 equivalence classes. [2025-01-10 02:30:51,118 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 15 check-sat command(s) and asserted 123 of 123 statements. [2025-01-10 02:30:51,118 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 15 check-sat command(s) [2025-01-10 02:30:51,118 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-10 02:30:51,119 INFO L256 TraceCheckSpWp]: Trace formula consists of 268 conjuncts, 32 conjuncts are in the unsatisfiable core [2025-01-10 02:30:51,120 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-10 02:30:51,207 INFO L134 CoverageAnalysis]: Checked inductivity of 812 backedges. 0 proven. 812 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-10 02:30:51,207 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-01-10 02:30:51,816 INFO L134 CoverageAnalysis]: Checked inductivity of 812 backedges. 0 proven. 812 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-10 02:30:51,816 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2104416049] provided 0 perfect and 2 imperfect interpolant sequences [2025-01-10 02:30:51,816 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-01-10 02:30:51,816 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [32, 32, 32] total 63 [2025-01-10 02:30:51,816 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [927723181] [2025-01-10 02:30:51,816 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-01-10 02:30:51,817 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 64 states [2025-01-10 02:30:51,817 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-10 02:30:51,817 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 64 interpolants. [2025-01-10 02:30:51,818 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=996, Invalid=3036, Unknown=0, NotChecked=0, Total=4032 [2025-01-10 02:30:51,818 INFO L87 Difference]: Start difference. First operand 21969 states and 31259 transitions. Second operand has 64 states, 61 states have (on average 3.4918032786885247) internal successors, (213), 34 states have internal predecessors, (213), 30 states have call successors, (30), 30 states have call predecessors, (30), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-10 02:30:57,020 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-10 02:30:57,020 INFO L93 Difference]: Finished difference Result 34918 states and 49042 transitions. [2025-01-10 02:30:57,021 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 64 states. [2025-01-10 02:30:57,021 INFO L78 Accepts]: Start accepts. Automaton has has 64 states, 61 states have (on average 3.4918032786885247) internal successors, (213), 34 states have internal predecessors, (213), 30 states have call successors, (30), 30 states have call predecessors, (30), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 123 [2025-01-10 02:30:57,021 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-10 02:30:57,128 INFO L225 Difference]: With dead ends: 34918 [2025-01-10 02:30:57,128 INFO L226 Difference]: Without dead ends: 34917 [2025-01-10 02:30:57,139 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 306 GetRequests, 214 SyntacticMatches, 0 SemanticMatches, 92 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1740 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=2421, Invalid=6321, Unknown=0, NotChecked=0, Total=8742 [2025-01-10 02:30:57,140 INFO L435 NwaCegarLoop]: 23 mSDtfsCounter, 1135 mSDsluCounter, 791 mSDsCounter, 0 mSdLazyCounter, 884 mSolverCounterSat, 256 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1166 SdHoareTripleChecker+Valid, 814 SdHoareTripleChecker+Invalid, 1140 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 256 IncrementalHoareTripleChecker+Valid, 884 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2025-01-10 02:30:57,140 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1166 Valid, 814 Invalid, 1140 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [256 Valid, 884 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2025-01-10 02:30:57,155 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34917 states.