./Ultimate.py --spec /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/properties/no-overflow.prp --file /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/recursive/Ackermann02.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 4a390ef5 Calling Ultimate with: /root/.sdkman/candidates/java/current/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/recursive/Ackermann02.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/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 20c02b81d1b1bc312ccc75d6e9b31c6252d69e8a6e2560afe3a2a95a3e53102a --- Real Ultimate output --- This is Ultimate 0.2.5-dev-4a390ef-m [2024-10-24 20:38:44,064 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-10-24 20:38:44,122 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf [2024-10-24 20:38:44,128 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-10-24 20:38:44,128 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-10-24 20:38:44,145 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-10-24 20:38:44,146 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-10-24 20:38:44,146 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-10-24 20:38:44,146 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-10-24 20:38:44,147 INFO L153 SettingsManager]: * Use memory slicer=true [2024-10-24 20:38:44,147 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-10-24 20:38:44,147 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-10-24 20:38:44,148 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-10-24 20:38:44,148 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-10-24 20:38:44,148 INFO L153 SettingsManager]: * Use SBE=true [2024-10-24 20:38:44,148 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-10-24 20:38:44,149 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-10-24 20:38:44,149 INFO L153 SettingsManager]: * sizeof long=4 [2024-10-24 20:38:44,149 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-10-24 20:38:44,150 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-10-24 20:38:44,150 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-10-24 20:38:44,153 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-10-24 20:38:44,153 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-10-24 20:38:44,153 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-10-24 20:38:44,153 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-10-24 20:38:44,153 INFO L153 SettingsManager]: * Check absence of signed integer overflows=ASSERTandASSUME [2024-10-24 20:38:44,154 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-10-24 20:38:44,154 INFO L153 SettingsManager]: * sizeof long double=12 [2024-10-24 20:38:44,154 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-10-24 20:38:44,154 INFO L153 SettingsManager]: * Use constant arrays=true [2024-10-24 20:38:44,154 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-10-24 20:38:44,155 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-10-24 20:38:44,155 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-10-24 20:38:44,155 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-10-24 20:38:44,155 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-24 20:38:44,155 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-10-24 20:38:44,156 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-10-24 20:38:44,156 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-10-24 20:38:44,156 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-10-24 20:38:44,159 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-10-24 20:38:44,159 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-10-24 20:38:44,159 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-10-24 20:38:44,159 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-10-24 20:38:44,160 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-10-24 20:38:44,160 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 20c02b81d1b1bc312ccc75d6e9b31c6252d69e8a6e2560afe3a2a95a3e53102a [2024-10-24 20:38:44,362 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-10-24 20:38:44,381 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-10-24 20:38:44,384 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-10-24 20:38:44,385 INFO L270 PluginConnector]: Initializing CDTParser... [2024-10-24 20:38:44,385 INFO L274 PluginConnector]: CDTParser initialized [2024-10-24 20:38:44,386 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/recursive/Ackermann02.c [2024-10-24 20:38:45,684 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-10-24 20:38:45,806 INFO L384 CDTParser]: Found 1 translation units. [2024-10-24 20:38:45,806 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/recursive/Ackermann02.c [2024-10-24 20:38:45,812 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/20d0233ef/f1fe7a777fa54b258ef04f3553ec3c12/FLAG7cb5df006 [2024-10-24 20:38:45,823 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/20d0233ef/f1fe7a777fa54b258ef04f3553ec3c12 [2024-10-24 20:38:45,825 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-10-24 20:38:45,826 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-10-24 20:38:45,827 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-10-24 20:38:45,828 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-10-24 20:38:45,835 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-10-24 20:38:45,836 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 08:38:45" (1/1) ... [2024-10-24 20:38:45,837 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@24e33d8d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 08:38:45, skipping insertion in model container [2024-10-24 20:38:45,837 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 08:38:45" (1/1) ... [2024-10-24 20:38:45,853 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-10-24 20:38:45,974 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-24 20:38:45,981 INFO L200 MainTranslator]: Completed pre-run [2024-10-24 20:38:45,991 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-24 20:38:46,004 INFO L204 MainTranslator]: Completed translation [2024-10-24 20:38:46,004 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 08:38:46 WrapperNode [2024-10-24 20:38:46,004 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-10-24 20:38:46,005 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-10-24 20:38:46,005 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-10-24 20:38:46,005 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-10-24 20:38:46,011 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 08:38:46" (1/1) ... [2024-10-24 20:38:46,023 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 08:38:46" (1/1) ... [2024-10-24 20:38:46,035 INFO L138 Inliner]: procedures = 13, calls = 12, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 34 [2024-10-24 20:38:46,035 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-10-24 20:38:46,036 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-10-24 20:38:46,036 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-10-24 20:38:46,036 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-10-24 20:38:46,043 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 08:38:46" (1/1) ... [2024-10-24 20:38:46,043 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 08:38:46" (1/1) ... [2024-10-24 20:38:46,044 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 08:38:46" (1/1) ... [2024-10-24 20:38:46,052 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]. [2024-10-24 20:38:46,056 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 08:38:46" (1/1) ... [2024-10-24 20:38:46,056 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 08:38:46" (1/1) ... [2024-10-24 20:38:46,058 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 08:38:46" (1/1) ... [2024-10-24 20:38:46,059 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 08:38:46" (1/1) ... [2024-10-24 20:38:46,060 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 08:38:46" (1/1) ... [2024-10-24 20:38:46,064 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 08:38:46" (1/1) ... [2024-10-24 20:38:46,066 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-10-24 20:38:46,067 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-10-24 20:38:46,067 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-10-24 20:38:46,067 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-10-24 20:38:46,067 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 08:38:46" (1/1) ... [2024-10-24 20:38:46,071 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-24 20:38:46,083 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-24 20:38:46,095 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-10-24 20:38:46,097 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-10-24 20:38:46,131 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-10-24 20:38:46,131 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-10-24 20:38:46,131 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-10-24 20:38:46,132 INFO L130 BoogieDeclarations]: Found specification of procedure ackermann [2024-10-24 20:38:46,132 INFO L138 BoogieDeclarations]: Found implementation of procedure ackermann [2024-10-24 20:38:46,132 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-10-24 20:38:46,181 INFO L238 CfgBuilder]: Building ICFG [2024-10-24 20:38:46,184 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-10-24 20:38:46,318 INFO L? ?]: Removed 19 outVars from TransFormulas that were not future-live. [2024-10-24 20:38:46,319 INFO L287 CfgBuilder]: Performing block encoding [2024-10-24 20:38:46,347 INFO L309 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-10-24 20:38:46,347 INFO L314 CfgBuilder]: Removed 0 assume(true) statements. [2024-10-24 20:38:46,347 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 08:38:46 BoogieIcfgContainer [2024-10-24 20:38:46,347 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-10-24 20:38:46,350 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-10-24 20:38:46,350 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-10-24 20:38:46,354 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-10-24 20:38:46,354 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.10 08:38:45" (1/3) ... [2024-10-24 20:38:46,355 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1266d721 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 08:38:46, skipping insertion in model container [2024-10-24 20:38:46,355 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 08:38:46" (2/3) ... [2024-10-24 20:38:46,356 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1266d721 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 08:38:46, skipping insertion in model container [2024-10-24 20:38:46,356 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 08:38:46" (3/3) ... [2024-10-24 20:38:46,357 INFO L112 eAbstractionObserver]: Analyzing ICFG Ackermann02.c [2024-10-24 20:38:46,370 INFO L209 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-10-24 20:38:46,370 INFO L149 ceAbstractionStarter]: Applying trace abstraction to program that has 8 error locations. [2024-10-24 20:38:46,420 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-10-24 20:38:46,426 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;@1d49eb86, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-10-24 20:38:46,429 INFO L334 AbstractCegarLoop]: Starting to check reachability of 8 error locations. [2024-10-24 20:38:46,432 INFO L276 IsEmpty]: Start isEmpty. Operand has 35 states, 21 states have (on average 1.619047619047619) internal successors, (34), 29 states have internal predecessors, (34), 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) [2024-10-24 20:38:46,439 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2024-10-24 20:38:46,439 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 20:38:46,439 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2024-10-24 20:38:46,441 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ackermannErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ackermannErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ackermannErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ackermannErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 5 more)] === [2024-10-24 20:38:46,445 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 20:38:46,446 INFO L85 PathProgramCache]: Analyzing trace with hash -2118177911, now seen corresponding path program 1 times [2024-10-24 20:38:46,469 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 20:38:46,470 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2112262087] [2024-10-24 20:38:46,470 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 20:38:46,470 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 20:38:46,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 20:38:46,642 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 20:38:46,642 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 20:38:46,642 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2112262087] [2024-10-24 20:38:46,643 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2112262087] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 20:38:46,643 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 20:38:46,643 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-10-24 20:38:46,644 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1499485598] [2024-10-24 20:38:46,646 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 20:38:46,649 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-24 20:38:46,649 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 20:38:46,666 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-24 20:38:46,667 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-10-24 20:38:46,668 INFO L87 Difference]: Start difference. First operand has 35 states, 21 states have (on average 1.619047619047619) internal successors, (34), 29 states have internal predecessors, (34), 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 2.0) internal successors, (6), 4 states have internal predecessors, (6), 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) [2024-10-24 20:38:46,791 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 20:38:46,791 INFO L93 Difference]: Finished difference Result 67 states and 79 transitions. [2024-10-24 20:38:46,792 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-24 20:38:46,793 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 3 states have (on average 2.0) internal successors, (6), 4 states have internal predecessors, (6), 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 7 [2024-10-24 20:38:46,793 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-24 20:38:46,799 INFO L225 Difference]: With dead ends: 67 [2024-10-24 20:38:46,799 INFO L226 Difference]: Without dead ends: 58 [2024-10-24 20:38:46,801 INFO L431 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 [2024-10-24 20:38:46,805 INFO L432 NwaCegarLoop]: 30 mSDtfsCounter, 37 mSDsluCounter, 78 mSDsCounter, 0 mSdLazyCounter, 72 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 39 SdHoareTripleChecker+Valid, 108 SdHoareTripleChecker+Invalid, 79 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 72 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-24 20:38:46,805 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [39 Valid, 108 Invalid, 79 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 72 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-24 20:38:46,817 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58 states. [2024-10-24 20:38:46,830 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58 to 50. [2024-10-24 20:38:46,831 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 50 states, 33 states have (on average 1.5454545454545454) internal successors, (51), 41 states have internal predecessors, (51), 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) [2024-10-24 20:38:46,832 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 64 transitions. [2024-10-24 20:38:46,833 INFO L78 Accepts]: Start accepts. Automaton has 50 states and 64 transitions. Word has length 7 [2024-10-24 20:38:46,834 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-24 20:38:46,834 INFO L471 AbstractCegarLoop]: Abstraction has 50 states and 64 transitions. [2024-10-24 20:38:46,834 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 3 states have (on average 2.0) internal successors, (6), 4 states have internal predecessors, (6), 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) [2024-10-24 20:38:46,834 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 64 transitions. [2024-10-24 20:38:46,834 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2024-10-24 20:38:46,835 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 20:38:46,835 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 20:38:46,835 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-10-24 20:38:46,835 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ackermannErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ackermannErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ackermannErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ackermannErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 5 more)] === [2024-10-24 20:38:46,835 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 20:38:46,836 INFO L85 PathProgramCache]: Analyzing trace with hash -1239000740, now seen corresponding path program 1 times [2024-10-24 20:38:46,836 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 20:38:46,836 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [271967178] [2024-10-24 20:38:46,836 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 20:38:46,836 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 20:38:46,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 20:38:46,891 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 20:38:46,891 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 20:38:46,891 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [271967178] [2024-10-24 20:38:46,891 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [271967178] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 20:38:46,891 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 20:38:46,892 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-10-24 20:38:46,892 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [497055385] [2024-10-24 20:38:46,892 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 20:38:46,893 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-24 20:38:46,893 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 20:38:46,894 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-24 20:38:46,894 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-10-24 20:38:46,894 INFO L87 Difference]: Start difference. First operand 50 states and 64 transitions. Second operand has 5 states, 4 states have (on average 1.75) 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) [2024-10-24 20:38:46,974 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 20:38:46,975 INFO L93 Difference]: Finished difference Result 100 states and 128 transitions. [2024-10-24 20:38:46,975 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-24 20:38:46,975 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 1.75) 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 [2024-10-24 20:38:46,976 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-24 20:38:46,977 INFO L225 Difference]: With dead ends: 100 [2024-10-24 20:38:46,977 INFO L226 Difference]: Without dead ends: 92 [2024-10-24 20:38:46,977 INFO L431 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 [2024-10-24 20:38:46,978 INFO L432 NwaCegarLoop]: 27 mSDtfsCounter, 36 mSDsluCounter, 71 mSDsCounter, 0 mSdLazyCounter, 47 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 36 SdHoareTripleChecker+Valid, 98 SdHoareTripleChecker+Invalid, 55 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 47 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-24 20:38:46,979 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [36 Valid, 98 Invalid, 55 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 47 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-24 20:38:46,979 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 92 states. [2024-10-24 20:38:46,992 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 92 to 84. [2024-10-24 20:38:46,992 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 84 states, 60 states have (on average 1.5166666666666666) internal successors, (91), 69 states have internal predecessors, (91), 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) [2024-10-24 20:38:46,994 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 84 states to 84 states and 114 transitions. [2024-10-24 20:38:46,995 INFO L78 Accepts]: Start accepts. Automaton has 84 states and 114 transitions. Word has length 8 [2024-10-24 20:38:46,995 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-24 20:38:46,995 INFO L471 AbstractCegarLoop]: Abstraction has 84 states and 114 transitions. [2024-10-24 20:38:46,998 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 1.75) 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) [2024-10-24 20:38:46,998 INFO L276 IsEmpty]: Start isEmpty. Operand 84 states and 114 transitions. [2024-10-24 20:38:46,999 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2024-10-24 20:38:46,999 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 20:38:46,999 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 20:38:46,999 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-10-24 20:38:46,999 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ackermannErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ackermannErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ackermannErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ackermannErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 5 more)] === [2024-10-24 20:38:47,000 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 20:38:47,003 INFO L85 PathProgramCache]: Analyzing trace with hash -1239005737, now seen corresponding path program 1 times [2024-10-24 20:38:47,003 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 20:38:47,003 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1185922451] [2024-10-24 20:38:47,003 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 20:38:47,004 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 20:38:47,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 20:38:47,080 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 20:38:47,080 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 20:38:47,081 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1185922451] [2024-10-24 20:38:47,081 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1185922451] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 20:38:47,081 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 20:38:47,081 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-10-24 20:38:47,081 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1761330119] [2024-10-24 20:38:47,081 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 20:38:47,082 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-24 20:38:47,082 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 20:38:47,082 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-24 20:38:47,082 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-10-24 20:38:47,082 INFO L87 Difference]: Start difference. First operand 84 states and 114 transitions. 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) [2024-10-24 20:38:47,177 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 20:38:47,178 INFO L93 Difference]: Finished difference Result 117 states and 156 transitions. [2024-10-24 20:38:47,178 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-24 20:38:47,178 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 [2024-10-24 20:38:47,178 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-24 20:38:47,180 INFO L225 Difference]: With dead ends: 117 [2024-10-24 20:38:47,180 INFO L226 Difference]: Without dead ends: 113 [2024-10-24 20:38:47,181 INFO L431 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 [2024-10-24 20:38:47,181 INFO L432 NwaCegarLoop]: 25 mSDtfsCounter, 34 mSDsluCounter, 68 mSDsCounter, 0 mSdLazyCounter, 61 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 35 SdHoareTripleChecker+Valid, 93 SdHoareTripleChecker+Invalid, 69 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 61 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-24 20:38:47,182 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [35 Valid, 93 Invalid, 69 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 61 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-24 20:38:47,186 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 113 states. [2024-10-24 20:38:47,199 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 113 to 101. [2024-10-24 20:38:47,200 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 101 states, 73 states have (on average 1.452054794520548) internal successors, (106), 82 states have internal predecessors, (106), 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) [2024-10-24 20:38:47,201 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 101 states to 101 states and 135 transitions. [2024-10-24 20:38:47,201 INFO L78 Accepts]: Start accepts. Automaton has 101 states and 135 transitions. Word has length 8 [2024-10-24 20:38:47,201 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-24 20:38:47,202 INFO L471 AbstractCegarLoop]: Abstraction has 101 states and 135 transitions. [2024-10-24 20:38:47,202 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) [2024-10-24 20:38:47,202 INFO L276 IsEmpty]: Start isEmpty. Operand 101 states and 135 transitions. [2024-10-24 20:38:47,202 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2024-10-24 20:38:47,202 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 20:38:47,202 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 20:38:47,203 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-10-24 20:38:47,203 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ackermannErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ackermannErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ackermannErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ackermannErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 5 more)] === [2024-10-24 20:38:47,203 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 20:38:47,203 INFO L85 PathProgramCache]: Analyzing trace with hash 245682796, now seen corresponding path program 1 times [2024-10-24 20:38:47,204 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 20:38:47,204 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1940785885] [2024-10-24 20:38:47,204 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 20:38:47,204 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 20:38:47,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 20:38:47,253 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 20:38:47,253 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 20:38:47,253 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1940785885] [2024-10-24 20:38:47,253 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1940785885] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 20:38:47,254 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 20:38:47,254 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-10-24 20:38:47,254 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1802060579] [2024-10-24 20:38:47,254 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 20:38:47,254 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-24 20:38:47,254 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 20:38:47,255 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-24 20:38:47,255 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-10-24 20:38:47,255 INFO L87 Difference]: Start difference. First operand 101 states and 135 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) [2024-10-24 20:38:47,314 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 20:38:47,314 INFO L93 Difference]: Finished difference Result 109 states and 152 transitions. [2024-10-24 20:38:47,315 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-24 20:38:47,315 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 [2024-10-24 20:38:47,315 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-24 20:38:47,316 INFO L225 Difference]: With dead ends: 109 [2024-10-24 20:38:47,316 INFO L226 Difference]: Without dead ends: 107 [2024-10-24 20:38:47,317 INFO L431 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 [2024-10-24 20:38:47,317 INFO L432 NwaCegarLoop]: 21 mSDtfsCounter, 35 mSDsluCounter, 26 mSDsCounter, 0 mSdLazyCounter, 41 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 35 SdHoareTripleChecker+Valid, 47 SdHoareTripleChecker+Invalid, 53 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 41 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-10-24 20:38:47,318 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [35 Valid, 47 Invalid, 53 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 41 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-24 20:38:47,318 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 107 states. [2024-10-24 20:38:47,328 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 107 to 99. [2024-10-24 20:38:47,329 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 99 states, 73 states have (on average 1.3150684931506849) internal successors, (96), 80 states have internal predecessors, (96), 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) [2024-10-24 20:38:47,330 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 99 states to 99 states and 125 transitions. [2024-10-24 20:38:47,333 INFO L78 Accepts]: Start accepts. Automaton has 99 states and 125 transitions. Word has length 9 [2024-10-24 20:38:47,333 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-24 20:38:47,333 INFO L471 AbstractCegarLoop]: Abstraction has 99 states and 125 transitions. [2024-10-24 20:38:47,333 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) [2024-10-24 20:38:47,334 INFO L276 IsEmpty]: Start isEmpty. Operand 99 states and 125 transitions. [2024-10-24 20:38:47,334 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2024-10-24 20:38:47,334 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 20:38:47,334 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 20:38:47,334 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-10-24 20:38:47,334 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ackermannErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ackermannErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ackermannErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ackermannErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 5 more)] === [2024-10-24 20:38:47,335 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 20:38:47,335 INFO L85 PathProgramCache]: Analyzing trace with hash -1896410727, now seen corresponding path program 1 times [2024-10-24 20:38:47,335 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 20:38:47,335 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1886527085] [2024-10-24 20:38:47,335 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 20:38:47,335 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 20:38:47,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 20:38:47,393 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 20:38:47,393 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 20:38:47,393 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1886527085] [2024-10-24 20:38:47,393 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1886527085] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 20:38:47,393 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 20:38:47,394 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-10-24 20:38:47,394 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [526280851] [2024-10-24 20:38:47,394 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 20:38:47,396 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-24 20:38:47,396 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 20:38:47,396 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-24 20:38:47,396 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-24 20:38:47,397 INFO L87 Difference]: Start difference. First operand 99 states and 125 transitions. Second operand has 4 states, 4 states have (on average 3.0) internal successors, (12), 3 states have internal predecessors, (12), 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) [2024-10-24 20:38:47,447 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 20:38:47,447 INFO L93 Difference]: Finished difference Result 169 states and 224 transitions. [2024-10-24 20:38:47,448 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-24 20:38:47,448 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 3.0) internal successors, (12), 3 states have internal predecessors, (12), 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 14 [2024-10-24 20:38:47,448 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-24 20:38:47,449 INFO L225 Difference]: With dead ends: 169 [2024-10-24 20:38:47,449 INFO L226 Difference]: Without dead ends: 98 [2024-10-24 20:38:47,450 INFO L431 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 [2024-10-24 20:38:47,451 INFO L432 NwaCegarLoop]: 37 mSDtfsCounter, 25 mSDsluCounter, 46 mSDsCounter, 0 mSdLazyCounter, 34 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 25 SdHoareTripleChecker+Valid, 83 SdHoareTripleChecker+Invalid, 38 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 34 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-10-24 20:38:47,451 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [25 Valid, 83 Invalid, 38 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 34 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-24 20:38:47,452 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 98 states. [2024-10-24 20:38:47,470 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 98 to 95. [2024-10-24 20:38:47,473 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 95 states, 70 states have (on average 1.3) internal successors, (91), 77 states have internal predecessors, (91), 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) [2024-10-24 20:38:47,474 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 95 states to 95 states and 118 transitions. [2024-10-24 20:38:47,475 INFO L78 Accepts]: Start accepts. Automaton has 95 states and 118 transitions. Word has length 14 [2024-10-24 20:38:47,475 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-24 20:38:47,475 INFO L471 AbstractCegarLoop]: Abstraction has 95 states and 118 transitions. [2024-10-24 20:38:47,475 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 3.0) internal successors, (12), 3 states have internal predecessors, (12), 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) [2024-10-24 20:38:47,475 INFO L276 IsEmpty]: Start isEmpty. Operand 95 states and 118 transitions. [2024-10-24 20:38:47,475 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2024-10-24 20:38:47,475 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 20:38:47,475 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 20:38:47,476 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-10-24 20:38:47,476 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ackermannErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ackermannErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ackermannErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ackermannErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 5 more)] === [2024-10-24 20:38:47,476 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 20:38:47,476 INFO L85 PathProgramCache]: Analyzing trace with hash -1896410503, now seen corresponding path program 1 times [2024-10-24 20:38:47,476 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 20:38:47,476 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [698008210] [2024-10-24 20:38:47,477 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 20:38:47,477 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 20:38:47,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 20:38:47,545 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 20:38:47,545 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 20:38:47,546 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [698008210] [2024-10-24 20:38:47,548 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [698008210] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-24 20:38:47,549 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [131204638] [2024-10-24 20:38:47,549 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 20:38:47,549 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-24 20:38:47,549 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-24 20:38:47,550 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-24 20:38:47,551 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-10-24 20:38:47,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 20:38:47,583 INFO L255 TraceCheckSpWp]: Trace formula consists of 57 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-10-24 20:38:47,585 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-24 20:38:47,622 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 20:38:47,623 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-24 20:38:47,680 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 20:38:47,682 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [131204638] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-24 20:38:47,682 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-24 20:38:47,682 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 11 [2024-10-24 20:38:47,682 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1580308341] [2024-10-24 20:38:47,682 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-24 20:38:47,682 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-10-24 20:38:47,683 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 20:38:47,683 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-10-24 20:38:47,685 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=98, Unknown=0, NotChecked=0, Total=132 [2024-10-24 20:38:47,685 INFO L87 Difference]: Start difference. First operand 95 states and 118 transitions. Second operand has 12 states, 11 states have (on average 2.090909090909091) internal successors, (23), 8 states have internal predecessors, (23), 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) [2024-10-24 20:38:47,903 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 20:38:47,904 INFO L93 Difference]: Finished difference Result 275 states and 358 transitions. [2024-10-24 20:38:47,904 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-10-24 20:38:47,905 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 2.090909090909091) internal successors, (23), 8 states have internal predecessors, (23), 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 14 [2024-10-24 20:38:47,905 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-24 20:38:47,907 INFO L225 Difference]: With dead ends: 275 [2024-10-24 20:38:47,907 INFO L226 Difference]: Without dead ends: 273 [2024-10-24 20:38:47,908 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=68, Invalid=172, Unknown=0, NotChecked=0, Total=240 [2024-10-24 20:38:47,910 INFO L432 NwaCegarLoop]: 29 mSDtfsCounter, 149 mSDsluCounter, 173 mSDsCounter, 0 mSdLazyCounter, 165 mSolverCounterSat, 41 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 152 SdHoareTripleChecker+Valid, 202 SdHoareTripleChecker+Invalid, 206 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 41 IncrementalHoareTripleChecker+Valid, 165 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-10-24 20:38:47,910 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [152 Valid, 202 Invalid, 206 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [41 Valid, 165 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-10-24 20:38:47,911 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 273 states. [2024-10-24 20:38:47,942 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 273 to 235. [2024-10-24 20:38:47,944 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 235 states, 181 states have (on average 1.2651933701657458) internal successors, (229), 188 states have internal predecessors, (229), 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) [2024-10-24 20:38:47,946 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 235 states to 235 states and 298 transitions. [2024-10-24 20:38:47,946 INFO L78 Accepts]: Start accepts. Automaton has 235 states and 298 transitions. Word has length 14 [2024-10-24 20:38:47,946 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-24 20:38:47,946 INFO L471 AbstractCegarLoop]: Abstraction has 235 states and 298 transitions. [2024-10-24 20:38:47,946 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 2.090909090909091) internal successors, (23), 8 states have internal predecessors, (23), 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) [2024-10-24 20:38:47,946 INFO L276 IsEmpty]: Start isEmpty. Operand 235 states and 298 transitions. [2024-10-24 20:38:47,947 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2024-10-24 20:38:47,947 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 20:38:47,947 INFO L215 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 20:38:47,963 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-10-24 20:38:48,147 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2024-10-24 20:38:48,149 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ackermannErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ackermannErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ackermannErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ackermannErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 5 more)] === [2024-10-24 20:38:48,149 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 20:38:48,149 INFO L85 PathProgramCache]: Analyzing trace with hash -1750564749, now seen corresponding path program 1 times [2024-10-24 20:38:48,150 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 20:38:48,150 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1730761181] [2024-10-24 20:38:48,150 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 20:38:48,150 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 20:38:48,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 20:38:48,199 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 20:38:48,199 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 20:38:48,200 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1730761181] [2024-10-24 20:38:48,200 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1730761181] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-24 20:38:48,200 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [75906687] [2024-10-24 20:38:48,200 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 20:38:48,200 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-24 20:38:48,200 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-24 20:38:48,202 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-24 20:38:48,208 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-10-24 20:38:48,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 20:38:48,262 INFO L255 TraceCheckSpWp]: Trace formula consists of 58 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-10-24 20:38:48,263 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-24 20:38:48,291 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 20:38:48,292 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-24 20:38:48,349 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 20:38:48,349 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [75906687] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-24 20:38:48,349 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-24 20:38:48,349 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 11 [2024-10-24 20:38:48,350 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [959354239] [2024-10-24 20:38:48,350 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-24 20:38:48,350 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-10-24 20:38:48,350 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 20:38:48,350 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-10-24 20:38:48,350 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=98, Unknown=0, NotChecked=0, Total=132 [2024-10-24 20:38:48,351 INFO L87 Difference]: Start difference. First operand 235 states and 298 transitions. Second operand has 12 states, 9 states have (on average 2.6666666666666665) 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) [2024-10-24 20:38:48,559 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 20:38:48,559 INFO L93 Difference]: Finished difference Result 497 states and 668 transitions. [2024-10-24 20:38:48,560 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-10-24 20:38:48,560 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 9 states have (on average 2.6666666666666665) 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 [2024-10-24 20:38:48,560 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-24 20:38:48,563 INFO L225 Difference]: With dead ends: 497 [2024-10-24 20:38:48,563 INFO L226 Difference]: Without dead ends: 495 [2024-10-24 20:38:48,564 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=77, Invalid=195, Unknown=0, NotChecked=0, Total=272 [2024-10-24 20:38:48,564 INFO L432 NwaCegarLoop]: 21 mSDtfsCounter, 129 mSDsluCounter, 140 mSDsCounter, 0 mSdLazyCounter, 194 mSolverCounterSat, 33 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 134 SdHoareTripleChecker+Valid, 161 SdHoareTripleChecker+Invalid, 227 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 33 IncrementalHoareTripleChecker+Valid, 194 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-24 20:38:48,565 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [134 Valid, 161 Invalid, 227 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [33 Valid, 194 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-24 20:38:48,565 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 495 states. [2024-10-24 20:38:48,597 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 495 to 444. [2024-10-24 20:38:48,598 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 444 states, 346 states have (on average 1.2283236994219653) internal successors, (425), 353 states have internal predecessors, (425), 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) [2024-10-24 20:38:48,600 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 444 states to 444 states and 560 transitions. [2024-10-24 20:38:48,602 INFO L78 Accepts]: Start accepts. Automaton has 444 states and 560 transitions. Word has length 15 [2024-10-24 20:38:48,602 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-24 20:38:48,602 INFO L471 AbstractCegarLoop]: Abstraction has 444 states and 560 transitions. [2024-10-24 20:38:48,602 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 9 states have (on average 2.6666666666666665) 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) [2024-10-24 20:38:48,602 INFO L276 IsEmpty]: Start isEmpty. Operand 444 states and 560 transitions. [2024-10-24 20:38:48,603 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2024-10-24 20:38:48,603 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 20:38:48,604 INFO L215 NwaCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 20:38:48,617 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2024-10-24 20:38:48,807 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2024-10-24 20:38:48,808 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ackermannErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ackermannErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ackermannErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ackermannErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 5 more)] === [2024-10-24 20:38:48,809 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 20:38:48,809 INFO L85 PathProgramCache]: Analyzing trace with hash 244799614, now seen corresponding path program 1 times [2024-10-24 20:38:48,809 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 20:38:48,810 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1961753241] [2024-10-24 20:38:48,810 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 20:38:48,810 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 20:38:48,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 20:38:48,896 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2024-10-24 20:38:48,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 20:38:48,929 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 4 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-10-24 20:38:48,929 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 20:38:48,929 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1961753241] [2024-10-24 20:38:48,930 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1961753241] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-24 20:38:48,930 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1309284394] [2024-10-24 20:38:48,930 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 20:38:48,930 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-24 20:38:48,930 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-24 20:38:48,932 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-24 20:38:48,933 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-10-24 20:38:48,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 20:38:48,964 INFO L255 TraceCheckSpWp]: Trace formula consists of 79 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-10-24 20:38:48,965 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-24 20:38:49,034 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-10-24 20:38:49,034 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-24 20:38:49,034 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1309284394] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 20:38:49,035 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-24 20:38:49,035 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [7] total 12 [2024-10-24 20:38:49,035 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2056474854] [2024-10-24 20:38:49,035 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 20:38:49,035 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-10-24 20:38:49,036 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 20:38:49,036 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-10-24 20:38:49,037 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=128, Unknown=0, NotChecked=0, Total=156 [2024-10-24 20:38:49,037 INFO L87 Difference]: Start difference. First operand 444 states and 560 transitions. Second operand has 7 states, 6 states have (on average 3.0) internal successors, (18), 6 states have internal predecessors, (18), 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) [2024-10-24 20:38:49,193 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 20:38:49,195 INFO L93 Difference]: Finished difference Result 493 states and 649 transitions. [2024-10-24 20:38:49,195 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-10-24 20:38:49,195 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 3.0) internal successors, (18), 6 states have internal predecessors, (18), 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 23 [2024-10-24 20:38:49,195 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-24 20:38:49,199 INFO L225 Difference]: With dead ends: 493 [2024-10-24 20:38:49,199 INFO L226 Difference]: Without dead ends: 492 [2024-10-24 20:38:49,199 INFO L431 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 [2024-10-24 20:38:49,201 INFO L432 NwaCegarLoop]: 36 mSDtfsCounter, 34 mSDsluCounter, 111 mSDsCounter, 0 mSdLazyCounter, 111 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 36 SdHoareTripleChecker+Valid, 147 SdHoareTripleChecker+Invalid, 122 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 111 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-24 20:38:49,201 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [36 Valid, 147 Invalid, 122 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 111 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-24 20:38:49,204 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 492 states. [2024-10-24 20:38:49,238 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 492 to 443. [2024-10-24 20:38:49,239 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 443 states, 346 states have (on average 1.216763005780347) internal successors, (421), 352 states have internal predecessors, (421), 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) [2024-10-24 20:38:49,241 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 443 states to 443 states and 556 transitions. [2024-10-24 20:38:49,242 INFO L78 Accepts]: Start accepts. Automaton has 443 states and 556 transitions. Word has length 23 [2024-10-24 20:38:49,242 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-24 20:38:49,242 INFO L471 AbstractCegarLoop]: Abstraction has 443 states and 556 transitions. [2024-10-24 20:38:49,242 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 3.0) internal successors, (18), 6 states have internal predecessors, (18), 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) [2024-10-24 20:38:49,242 INFO L276 IsEmpty]: Start isEmpty. Operand 443 states and 556 transitions. [2024-10-24 20:38:49,243 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2024-10-24 20:38:49,243 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 20:38:49,243 INFO L215 NwaCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 20:38:49,264 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2024-10-24 20:38:49,444 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-24 20:38:49,444 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ackermannErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ackermannErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ackermannErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ackermannErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 5 more)] === [2024-10-24 20:38:49,445 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 20:38:49,445 INFO L85 PathProgramCache]: Analyzing trace with hash -1001146494, now seen corresponding path program 1 times [2024-10-24 20:38:49,445 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 20:38:49,445 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [695476994] [2024-10-24 20:38:49,445 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 20:38:49,445 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 20:38:49,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 20:38:49,500 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2024-10-24 20:38:49,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 20:38:49,527 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 1 proven. 5 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-10-24 20:38:49,528 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 20:38:49,528 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [695476994] [2024-10-24 20:38:49,529 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [695476994] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-24 20:38:49,529 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2109573479] [2024-10-24 20:38:49,529 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 20:38:49,529 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-24 20:38:49,530 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-24 20:38:49,531 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-24 20:38:49,532 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-10-24 20:38:49,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 20:38:49,569 INFO L255 TraceCheckSpWp]: Trace formula consists of 80 conjuncts, 10 conjuncts are in the unsatisfiable core [2024-10-24 20:38:49,570 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-24 20:38:49,613 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 1 proven. 5 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-10-24 20:38:49,613 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-24 20:38:49,739 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 1 proven. 5 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-10-24 20:38:49,739 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2109573479] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-24 20:38:49,739 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-24 20:38:49,739 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 14 [2024-10-24 20:38:49,739 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1371581199] [2024-10-24 20:38:49,739 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-24 20:38:49,740 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2024-10-24 20:38:49,740 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 20:38:49,740 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2024-10-24 20:38:49,740 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=174, Unknown=0, NotChecked=0, Total=210 [2024-10-24 20:38:49,740 INFO L87 Difference]: Start difference. First operand 443 states and 556 transitions. Second operand has 15 states, 12 states have (on average 3.3333333333333335) internal successors, (40), 13 states have internal predecessors, (40), 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) [2024-10-24 20:38:50,025 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 20:38:50,026 INFO L93 Difference]: Finished difference Result 806 states and 1178 transitions. [2024-10-24 20:38:50,030 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2024-10-24 20:38:50,030 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 12 states have (on average 3.3333333333333335) internal successors, (40), 13 states have internal predecessors, (40), 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 24 [2024-10-24 20:38:50,031 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-24 20:38:50,034 INFO L225 Difference]: With dead ends: 806 [2024-10-24 20:38:50,034 INFO L226 Difference]: Without dead ends: 804 [2024-10-24 20:38:50,035 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 67 GetRequests, 42 SyntacticMatches, 1 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 70 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=138, Invalid=512, Unknown=0, NotChecked=0, Total=650 [2024-10-24 20:38:50,035 INFO L432 NwaCegarLoop]: 18 mSDtfsCounter, 64 mSDsluCounter, 139 mSDsCounter, 0 mSdLazyCounter, 231 mSolverCounterSat, 49 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 73 SdHoareTripleChecker+Valid, 157 SdHoareTripleChecker+Invalid, 280 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 49 IncrementalHoareTripleChecker+Valid, 231 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-24 20:38:50,036 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [73 Valid, 157 Invalid, 280 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [49 Valid, 231 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-24 20:38:50,036 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 804 states. [2024-10-24 20:38:50,090 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 804 to 640. [2024-10-24 20:38:50,092 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 640 states, 476 states have (on average 1.203781512605042) internal successors, (573), 504 states have internal predecessors, (573), 107 states have call successors, (107), 31 states have call predecessors, (107), 52 states have return successors, (194), 104 states have call predecessors, (194), 103 states have call successors, (194) [2024-10-24 20:38:50,096 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 640 states to 640 states and 874 transitions. [2024-10-24 20:38:50,097 INFO L78 Accepts]: Start accepts. Automaton has 640 states and 874 transitions. Word has length 24 [2024-10-24 20:38:50,098 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-24 20:38:50,098 INFO L471 AbstractCegarLoop]: Abstraction has 640 states and 874 transitions. [2024-10-24 20:38:50,098 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 12 states have (on average 3.3333333333333335) internal successors, (40), 13 states have internal predecessors, (40), 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) [2024-10-24 20:38:50,098 INFO L276 IsEmpty]: Start isEmpty. Operand 640 states and 874 transitions. [2024-10-24 20:38:50,099 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2024-10-24 20:38:50,100 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 20:38:50,100 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1] [2024-10-24 20:38:50,117 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-10-24 20:38:50,301 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-24 20:38:50,301 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ackermannErr6ASSERT_VIOLATIONINTEGER_OVERFLOW === [ackermannErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ackermannErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ackermannErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 5 more)] === [2024-10-24 20:38:50,302 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 20:38:50,302 INFO L85 PathProgramCache]: Analyzing trace with hash 1126474954, now seen corresponding path program 1 times [2024-10-24 20:38:50,302 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 20:38:50,302 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1424739984] [2024-10-24 20:38:50,303 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 20:38:50,303 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 20:38:50,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 20:38:50,373 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 20:38:50,373 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 20:38:50,373 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1424739984] [2024-10-24 20:38:50,374 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1424739984] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-24 20:38:50,374 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [790752231] [2024-10-24 20:38:50,374 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 20:38:50,374 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-24 20:38:50,374 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-24 20:38:50,375 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-24 20:38:50,376 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-10-24 20:38:50,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 20:38:50,404 INFO L255 TraceCheckSpWp]: Trace formula consists of 76 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-10-24 20:38:50,405 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-24 20:38:50,444 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 20:38:50,444 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-24 20:38:50,536 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 20:38:50,536 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [790752231] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-24 20:38:50,536 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-24 20:38:50,536 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 15 [2024-10-24 20:38:50,537 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [89763876] [2024-10-24 20:38:50,537 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-24 20:38:50,537 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2024-10-24 20:38:50,537 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 20:38:50,537 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2024-10-24 20:38:50,538 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=60, Invalid=180, Unknown=0, NotChecked=0, Total=240 [2024-10-24 20:38:50,539 INFO L87 Difference]: Start difference. First operand 640 states and 874 transitions. Second operand has 16 states, 13 states have (on average 3.3846153846153846) internal successors, (44), 10 states have internal predecessors, (44), 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) [2024-10-24 20:38:50,793 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 20:38:50,794 INFO L93 Difference]: Finished difference Result 996 states and 1429 transitions. [2024-10-24 20:38:50,794 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2024-10-24 20:38:50,794 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 13 states have (on average 3.3846153846153846) internal successors, (44), 10 states have internal predecessors, (44), 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 26 [2024-10-24 20:38:50,796 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-24 20:38:50,800 INFO L225 Difference]: With dead ends: 996 [2024-10-24 20:38:50,800 INFO L226 Difference]: Without dead ends: 995 [2024-10-24 20:38:50,801 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 64 GetRequests, 44 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 60 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=129, Invalid=333, Unknown=0, NotChecked=0, Total=462 [2024-10-24 20:38:50,801 INFO L432 NwaCegarLoop]: 23 mSDtfsCounter, 183 mSDsluCounter, 265 mSDsCounter, 0 mSdLazyCounter, 243 mSolverCounterSat, 41 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 190 SdHoareTripleChecker+Valid, 288 SdHoareTripleChecker+Invalid, 284 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 41 IncrementalHoareTripleChecker+Valid, 243 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-24 20:38:50,802 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [190 Valid, 288 Invalid, 284 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [41 Valid, 243 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-24 20:38:50,804 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 995 states. [2024-10-24 20:38:50,864 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 995 to 916. [2024-10-24 20:38:50,866 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 916 states, 680 states have (on average 1.1720588235294118) internal successors, (797), 720 states have internal predecessors, (797), 155 states have call successors, (155), 43 states have call predecessors, (155), 76 states have return successors, (278), 152 states have call predecessors, (278), 151 states have call successors, (278) [2024-10-24 20:38:50,870 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 916 states to 916 states and 1230 transitions. [2024-10-24 20:38:50,870 INFO L78 Accepts]: Start accepts. Automaton has 916 states and 1230 transitions. Word has length 26 [2024-10-24 20:38:50,870 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-24 20:38:50,871 INFO L471 AbstractCegarLoop]: Abstraction has 916 states and 1230 transitions. [2024-10-24 20:38:50,871 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 13 states have (on average 3.3846153846153846) internal successors, (44), 10 states have internal predecessors, (44), 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) [2024-10-24 20:38:50,871 INFO L276 IsEmpty]: Start isEmpty. Operand 916 states and 1230 transitions. [2024-10-24 20:38:50,872 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2024-10-24 20:38:50,874 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 20:38:50,874 INFO L215 NwaCegarLoop]: trace histogram [3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 20:38:50,887 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2024-10-24 20:38:51,074 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2024-10-24 20:38:51,075 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ackermannErr6ASSERT_VIOLATIONINTEGER_OVERFLOW === [ackermannErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ackermannErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ackermannErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 5 more)] === [2024-10-24 20:38:51,076 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 20:38:51,076 INFO L85 PathProgramCache]: Analyzing trace with hash -24086519, now seen corresponding path program 1 times [2024-10-24 20:38:51,076 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 20:38:51,076 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1052336584] [2024-10-24 20:38:51,076 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 20:38:51,076 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 20:38:51,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 20:38:51,119 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2024-10-24 20:38:51,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 20:38:51,146 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-10-24 20:38:51,146 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 20:38:51,147 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1052336584] [2024-10-24 20:38:51,147 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1052336584] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-24 20:38:51,147 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1307270109] [2024-10-24 20:38:51,147 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 20:38:51,147 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-24 20:38:51,147 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-24 20:38:51,148 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-24 20:38:51,149 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-10-24 20:38:51,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 20:38:51,177 INFO L255 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 10 conjuncts are in the unsatisfiable core [2024-10-24 20:38:51,178 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-24 20:38:51,211 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-10-24 20:38:51,212 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-24 20:38:51,318 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-10-24 20:38:51,318 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1307270109] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-24 20:38:51,318 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-24 20:38:51,318 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 14 [2024-10-24 20:38:51,318 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [94173133] [2024-10-24 20:38:51,319 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-24 20:38:51,319 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2024-10-24 20:38:51,319 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 20:38:51,319 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2024-10-24 20:38:51,319 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=173, Unknown=0, NotChecked=0, Total=210 [2024-10-24 20:38:51,319 INFO L87 Difference]: Start difference. First operand 916 states and 1230 transitions. Second operand has 15 states, 12 states have (on average 3.0) internal successors, (36), 13 states have internal predecessors, (36), 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) [2024-10-24 20:38:51,627 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 20:38:51,628 INFO L93 Difference]: Finished difference Result 1477 states and 2204 transitions. [2024-10-24 20:38:51,628 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-10-24 20:38:51,628 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 12 states have (on average 3.0) internal successors, (36), 13 states have internal predecessors, (36), 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 26 [2024-10-24 20:38:51,629 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-24 20:38:51,635 INFO L225 Difference]: With dead ends: 1477 [2024-10-24 20:38:51,635 INFO L226 Difference]: Without dead ends: 1472 [2024-10-24 20:38:51,636 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 68 GetRequests, 46 SyntacticMatches, 1 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 44 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=115, Invalid=391, Unknown=0, NotChecked=0, Total=506 [2024-10-24 20:38:51,637 INFO L432 NwaCegarLoop]: 18 mSDtfsCounter, 147 mSDsluCounter, 116 mSDsCounter, 0 mSdLazyCounter, 243 mSolverCounterSat, 113 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 149 SdHoareTripleChecker+Valid, 134 SdHoareTripleChecker+Invalid, 356 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 113 IncrementalHoareTripleChecker+Valid, 243 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-10-24 20:38:51,637 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [149 Valid, 134 Invalid, 356 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [113 Valid, 243 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-10-24 20:38:51,639 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1472 states. [2024-10-24 20:38:51,727 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1472 to 1079. [2024-10-24 20:38:51,728 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1079 states, 803 states have (on average 1.1706102117061021) internal successors, (940), 852 states have internal predecessors, (940), 175 states have call successors, (175), 53 states have call predecessors, (175), 96 states have return successors, (415), 173 states have call predecessors, (415), 170 states have call successors, (415) [2024-10-24 20:38:51,733 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1079 states to 1079 states and 1530 transitions. [2024-10-24 20:38:51,733 INFO L78 Accepts]: Start accepts. Automaton has 1079 states and 1530 transitions. Word has length 26 [2024-10-24 20:38:51,734 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-24 20:38:51,734 INFO L471 AbstractCegarLoop]: Abstraction has 1079 states and 1530 transitions. [2024-10-24 20:38:51,734 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 12 states have (on average 3.0) internal successors, (36), 13 states have internal predecessors, (36), 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) [2024-10-24 20:38:51,734 INFO L276 IsEmpty]: Start isEmpty. Operand 1079 states and 1530 transitions. [2024-10-24 20:38:51,735 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2024-10-24 20:38:51,736 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 20:38:51,736 INFO L215 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] [2024-10-24 20:38:51,748 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2024-10-24 20:38:51,936 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-24 20:38:51,938 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ackermannErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ackermannErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ackermannErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ackermannErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 5 more)] === [2024-10-24 20:38:51,938 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 20:38:51,938 INFO L85 PathProgramCache]: Analyzing trace with hash -1210732047, now seen corresponding path program 1 times [2024-10-24 20:38:51,938 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 20:38:51,938 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [103407666] [2024-10-24 20:38:51,938 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 20:38:51,938 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 20:38:51,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 20:38:51,975 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2024-10-24 20:38:51,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 20:38:51,994 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-10-24 20:38:51,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 20:38:52,019 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 9 proven. 3 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-10-24 20:38:52,019 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 20:38:52,019 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [103407666] [2024-10-24 20:38:52,019 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [103407666] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-24 20:38:52,019 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1563908794] [2024-10-24 20:38:52,019 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 20:38:52,020 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-24 20:38:52,020 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-24 20:38:52,021 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-24 20:38:52,022 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-10-24 20:38:52,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 20:38:52,054 INFO L255 TraceCheckSpWp]: Trace formula consists of 102 conjuncts, 9 conjuncts are in the unsatisfiable core [2024-10-24 20:38:52,055 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-24 20:38:52,087 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 7 proven. 5 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-10-24 20:38:52,087 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-24 20:38:52,236 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 9 proven. 3 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-10-24 20:38:52,236 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1563908794] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-24 20:38:52,237 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-24 20:38:52,237 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 17 [2024-10-24 20:38:52,237 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2063940901] [2024-10-24 20:38:52,237 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-24 20:38:52,237 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2024-10-24 20:38:52,237 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 20:38:52,238 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2024-10-24 20:38:52,238 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=260, Unknown=0, NotChecked=0, Total=306 [2024-10-24 20:38:52,238 INFO L87 Difference]: Start difference. First operand 1079 states and 1530 transitions. Second operand has 18 states, 17 states have (on average 2.4705882352941178) internal successors, (42), 14 states have internal predecessors, (42), 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) [2024-10-24 20:38:52,727 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 20:38:52,728 INFO L93 Difference]: Finished difference Result 1882 states and 3144 transitions. [2024-10-24 20:38:52,728 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-10-24 20:38:52,728 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 17 states have (on average 2.4705882352941178) internal successors, (42), 14 states have internal predecessors, (42), 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 33 [2024-10-24 20:38:52,729 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-24 20:38:52,740 INFO L225 Difference]: With dead ends: 1882 [2024-10-24 20:38:52,740 INFO L226 Difference]: Without dead ends: 1868 [2024-10-24 20:38:52,742 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 89 GetRequests, 62 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 86 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=140, Invalid=672, Unknown=0, NotChecked=0, Total=812 [2024-10-24 20:38:52,742 INFO L432 NwaCegarLoop]: 25 mSDtfsCounter, 106 mSDsluCounter, 173 mSDsCounter, 0 mSdLazyCounter, 359 mSolverCounterSat, 114 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 106 SdHoareTripleChecker+Valid, 198 SdHoareTripleChecker+Invalid, 473 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 114 IncrementalHoareTripleChecker+Valid, 359 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-10-24 20:38:52,742 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [106 Valid, 198 Invalid, 473 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [114 Valid, 359 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-10-24 20:38:52,744 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1868 states. [2024-10-24 20:38:52,873 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1868 to 1576. [2024-10-24 20:38:52,875 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1576 states, 1148 states have (on average 1.1628919860627178) internal successors, (1335), 1209 states have internal predecessors, (1335), 271 states have call successors, (271), 73 states have call predecessors, (271), 152 states have return successors, (774), 293 states have call predecessors, (774), 263 states have call successors, (774) [2024-10-24 20:38:52,883 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1576 states to 1576 states and 2380 transitions. [2024-10-24 20:38:52,884 INFO L78 Accepts]: Start accepts. Automaton has 1576 states and 2380 transitions. Word has length 33 [2024-10-24 20:38:52,885 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-24 20:38:52,885 INFO L471 AbstractCegarLoop]: Abstraction has 1576 states and 2380 transitions. [2024-10-24 20:38:52,885 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 17 states have (on average 2.4705882352941178) internal successors, (42), 14 states have internal predecessors, (42), 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) [2024-10-24 20:38:52,885 INFO L276 IsEmpty]: Start isEmpty. Operand 1576 states and 2380 transitions. [2024-10-24 20:38:52,886 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2024-10-24 20:38:52,886 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 20:38:52,886 INFO L215 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] [2024-10-24 20:38:52,899 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2024-10-24 20:38:53,090 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-24 20:38:53,091 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ackermannErr6ASSERT_VIOLATIONINTEGER_OVERFLOW === [ackermannErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ackermannErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ackermannErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 5 more)] === [2024-10-24 20:38:53,091 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 20:38:53,092 INFO L85 PathProgramCache]: Analyzing trace with hash 427659960, now seen corresponding path program 1 times [2024-10-24 20:38:53,092 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 20:38:53,092 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1040380563] [2024-10-24 20:38:53,092 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 20:38:53,092 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 20:38:53,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 20:38:53,134 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2024-10-24 20:38:53,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 20:38:53,157 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-10-24 20:38:53,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 20:38:53,188 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 14 proven. 1 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-10-24 20:38:53,188 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 20:38:53,188 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1040380563] [2024-10-24 20:38:53,188 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1040380563] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-24 20:38:53,188 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2094939580] [2024-10-24 20:38:53,188 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 20:38:53,188 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-24 20:38:53,189 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-24 20:38:53,190 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-24 20:38:53,191 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-10-24 20:38:53,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 20:38:53,224 INFO L255 TraceCheckSpWp]: Trace formula consists of 103 conjuncts, 9 conjuncts are in the unsatisfiable core [2024-10-24 20:38:53,225 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-24 20:38:53,256 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 12 proven. 3 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-10-24 20:38:53,257 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-24 20:38:53,409 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-10-24 20:38:53,409 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2094939580] provided 1 perfect and 1 imperfect interpolant sequences [2024-10-24 20:38:53,409 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2024-10-24 20:38:53,409 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [8, 8] total 17 [2024-10-24 20:38:53,409 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1421216543] [2024-10-24 20:38:53,409 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 20:38:53,410 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-10-24 20:38:53,410 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 20:38:53,410 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-10-24 20:38:53,410 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=258, Unknown=0, NotChecked=0, Total=306 [2024-10-24 20:38:53,410 INFO L87 Difference]: Start difference. First operand 1576 states and 2380 transitions. Second operand has 9 states, 8 states have (on average 3.375) internal successors, (27), 7 states have internal predecessors, (27), 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) [2024-10-24 20:38:53,688 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 20:38:53,688 INFO L93 Difference]: Finished difference Result 1783 states and 2840 transitions. [2024-10-24 20:38:53,689 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-10-24 20:38:53,689 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.375) internal successors, (27), 7 states have internal predecessors, (27), 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 35 [2024-10-24 20:38:53,689 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-24 20:38:53,696 INFO L225 Difference]: With dead ends: 1783 [2024-10-24 20:38:53,696 INFO L226 Difference]: Without dead ends: 1782 [2024-10-24 20:38:53,697 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 85 GetRequests, 64 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 49 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=75, Invalid=431, Unknown=0, NotChecked=0, Total=506 [2024-10-24 20:38:53,698 INFO L432 NwaCegarLoop]: 35 mSDtfsCounter, 36 mSDsluCounter, 127 mSDsCounter, 0 mSdLazyCounter, 193 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 44 SdHoareTripleChecker+Valid, 162 SdHoareTripleChecker+Invalid, 210 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 193 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-24 20:38:53,698 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [44 Valid, 162 Invalid, 210 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 193 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-24 20:38:53,699 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1782 states. [2024-10-24 20:38:53,822 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1782 to 1613. [2024-10-24 20:38:53,824 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1613 states, 1172 states have (on average 1.1569965870307166) internal successors, (1356), 1230 states have internal predecessors, (1356), 287 states have call successors, (287), 73 states have call predecessors, (287), 149 states have return successors, (703), 309 states have call predecessors, (703), 279 states have call successors, (703) [2024-10-24 20:38:53,830 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1613 states to 1613 states and 2346 transitions. [2024-10-24 20:38:53,831 INFO L78 Accepts]: Start accepts. Automaton has 1613 states and 2346 transitions. Word has length 35 [2024-10-24 20:38:53,831 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-24 20:38:53,831 INFO L471 AbstractCegarLoop]: Abstraction has 1613 states and 2346 transitions. [2024-10-24 20:38:53,832 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 3.375) internal successors, (27), 7 states have internal predecessors, (27), 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) [2024-10-24 20:38:53,832 INFO L276 IsEmpty]: Start isEmpty. Operand 1613 states and 2346 transitions. [2024-10-24 20:38:53,833 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2024-10-24 20:38:53,833 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 20:38:53,833 INFO L215 NwaCegarLoop]: trace histogram [5, 4, 4, 4, 4, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 20:38:53,845 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2024-10-24 20:38:54,037 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2024-10-24 20:38:54,038 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ackermannErr6ASSERT_VIOLATIONINTEGER_OVERFLOW === [ackermannErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ackermannErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ackermannErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 5 more)] === [2024-10-24 20:38:54,038 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 20:38:54,038 INFO L85 PathProgramCache]: Analyzing trace with hash 965988533, now seen corresponding path program 2 times [2024-10-24 20:38:54,038 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 20:38:54,039 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1963061632] [2024-10-24 20:38:54,039 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 20:38:54,039 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 20:38:54,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 20:38:54,130 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2024-10-24 20:38:54,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 20:38:54,155 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 2 proven. 40 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2024-10-24 20:38:54,156 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 20:38:54,156 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1963061632] [2024-10-24 20:38:54,156 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1963061632] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-24 20:38:54,156 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [843226156] [2024-10-24 20:38:54,156 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-10-24 20:38:54,156 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-24 20:38:54,156 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-24 20:38:54,158 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-24 20:38:54,159 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-10-24 20:38:54,196 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-10-24 20:38:54,196 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-24 20:38:54,198 INFO L255 TraceCheckSpWp]: Trace formula consists of 113 conjuncts, 14 conjuncts are in the unsatisfiable core [2024-10-24 20:38:54,199 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-24 20:38:54,250 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 2 proven. 40 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2024-10-24 20:38:54,250 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-24 20:38:54,429 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 4 proven. 38 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2024-10-24 20:38:54,429 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [843226156] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-24 20:38:54,429 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-24 20:38:54,429 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 22 [2024-10-24 20:38:54,429 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [449722881] [2024-10-24 20:38:54,430 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-24 20:38:54,430 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2024-10-24 20:38:54,430 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 20:38:54,431 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2024-10-24 20:38:54,431 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=85, Invalid=421, Unknown=0, NotChecked=0, Total=506 [2024-10-24 20:38:54,431 INFO L87 Difference]: Start difference. First operand 1613 states and 2346 transitions. Second operand has 23 states, 20 states have (on average 3.0) internal successors, (60), 17 states have internal predecessors, (60), 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) [2024-10-24 20:38:55,230 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 20:38:55,230 INFO L93 Difference]: Finished difference Result 3196 states and 5553 transitions. [2024-10-24 20:38:55,231 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2024-10-24 20:38:55,231 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 20 states have (on average 3.0) internal successors, (60), 17 states have internal predecessors, (60), 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 42 [2024-10-24 20:38:55,232 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-24 20:38:55,250 INFO L225 Difference]: With dead ends: 3196 [2024-10-24 20:38:55,250 INFO L226 Difference]: Without dead ends: 3195 [2024-10-24 20:38:55,252 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 121 GetRequests, 75 SyntacticMatches, 0 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 421 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=491, Invalid=1765, Unknown=0, NotChecked=0, Total=2256 [2024-10-24 20:38:55,253 INFO L432 NwaCegarLoop]: 18 mSDtfsCounter, 373 mSDsluCounter, 187 mSDsCounter, 0 mSdLazyCounter, 368 mSolverCounterSat, 250 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 375 SdHoareTripleChecker+Valid, 205 SdHoareTripleChecker+Invalid, 618 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 250 IncrementalHoareTripleChecker+Valid, 368 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-10-24 20:38:55,253 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [375 Valid, 205 Invalid, 618 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [250 Valid, 368 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-10-24 20:38:55,255 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3195 states. [2024-10-24 20:38:55,481 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3195 to 2200. [2024-10-24 20:38:55,484 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2200 states, 1611 states have (on average 1.1558038485412787) internal successors, (1862), 1688 states have internal predecessors, (1862), 372 states have call successors, (372), 107 states have call predecessors, (372), 212 states have return successors, (1147), 404 states have call predecessors, (1147), 364 states have call successors, (1147) [2024-10-24 20:38:55,490 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2200 states to 2200 states and 3381 transitions. [2024-10-24 20:38:55,492 INFO L78 Accepts]: Start accepts. Automaton has 2200 states and 3381 transitions. Word has length 42 [2024-10-24 20:38:55,492 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-24 20:38:55,492 INFO L471 AbstractCegarLoop]: Abstraction has 2200 states and 3381 transitions. [2024-10-24 20:38:55,492 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 20 states have (on average 3.0) internal successors, (60), 17 states have internal predecessors, (60), 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) [2024-10-24 20:38:55,493 INFO L276 IsEmpty]: Start isEmpty. Operand 2200 states and 3381 transitions. [2024-10-24 20:38:55,494 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2024-10-24 20:38:55,494 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 20:38:55,494 INFO L215 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] [2024-10-24 20:38:55,506 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2024-10-24 20:38:55,694 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2024-10-24 20:38:55,695 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ackermannErr6ASSERT_VIOLATIONINTEGER_OVERFLOW === [ackermannErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ackermannErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ackermannErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 5 more)] === [2024-10-24 20:38:55,695 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 20:38:55,695 INFO L85 PathProgramCache]: Analyzing trace with hash 798745486, now seen corresponding path program 2 times [2024-10-24 20:38:55,695 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 20:38:55,695 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [385728812] [2024-10-24 20:38:55,695 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 20:38:55,695 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 20:38:55,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 20:38:55,742 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2024-10-24 20:38:55,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 20:38:55,763 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-10-24 20:38:55,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 20:38:55,789 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 26 proven. 8 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-10-24 20:38:55,790 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 20:38:55,790 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [385728812] [2024-10-24 20:38:55,791 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [385728812] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-24 20:38:55,791 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1582821233] [2024-10-24 20:38:55,791 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-10-24 20:38:55,791 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-24 20:38:55,791 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-24 20:38:55,792 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-24 20:38:55,794 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2024-10-24 20:38:55,828 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-10-24 20:38:55,829 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-24 20:38:55,829 INFO L255 TraceCheckSpWp]: Trace formula consists of 119 conjuncts, 11 conjuncts are in the unsatisfiable core [2024-10-24 20:38:55,830 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-24 20:38:55,872 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 24 proven. 10 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-10-24 20:38:55,872 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-24 20:38:56,060 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 28 proven. 6 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-10-24 20:38:56,061 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1582821233] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-24 20:38:56,061 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-24 20:38:56,061 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 10] total 21 [2024-10-24 20:38:56,061 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [887187121] [2024-10-24 20:38:56,061 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-24 20:38:56,061 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2024-10-24 20:38:56,061 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 20:38:56,062 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2024-10-24 20:38:56,062 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=394, Unknown=0, NotChecked=0, Total=462 [2024-10-24 20:38:56,062 INFO L87 Difference]: Start difference. First operand 2200 states and 3381 transitions. Second operand has 22 states, 21 states have (on average 2.857142857142857) internal successors, (60), 16 states have internal predecessors, (60), 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) [2024-10-24 20:38:57,070 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 20:38:57,070 INFO L93 Difference]: Finished difference Result 4454 states and 8208 transitions. [2024-10-24 20:38:57,070 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2024-10-24 20:38:57,071 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 21 states have (on average 2.857142857142857) internal successors, (60), 16 states have internal predecessors, (60), 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 43 [2024-10-24 20:38:57,071 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-24 20:38:57,085 INFO L225 Difference]: With dead ends: 4454 [2024-10-24 20:38:57,085 INFO L226 Difference]: Without dead ends: 3139 [2024-10-24 20:38:57,096 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 133 GetRequests, 84 SyntacticMatches, 0 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 500 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=501, Invalid=2049, Unknown=0, NotChecked=0, Total=2550 [2024-10-24 20:38:57,096 INFO L432 NwaCegarLoop]: 37 mSDtfsCounter, 190 mSDsluCounter, 279 mSDsCounter, 0 mSdLazyCounter, 599 mSolverCounterSat, 189 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 190 SdHoareTripleChecker+Valid, 316 SdHoareTripleChecker+Invalid, 788 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 189 IncrementalHoareTripleChecker+Valid, 599 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-10-24 20:38:57,096 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [190 Valid, 316 Invalid, 788 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [189 Valid, 599 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-10-24 20:38:57,099 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3139 states. [2024-10-24 20:38:57,331 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3139 to 2493. [2024-10-24 20:38:57,335 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2493 states, 1822 states have (on average 1.1492864983534576) internal successors, (2094), 1908 states have internal predecessors, (2094), 428 states have call successors, (428), 122 states have call predecessors, (428), 238 states have return successors, (1243), 462 states have call predecessors, (1243), 420 states have call successors, (1243) [2024-10-24 20:38:57,342 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2493 states to 2493 states and 3765 transitions. [2024-10-24 20:38:57,344 INFO L78 Accepts]: Start accepts. Automaton has 2493 states and 3765 transitions. Word has length 43 [2024-10-24 20:38:57,345 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-24 20:38:57,345 INFO L471 AbstractCegarLoop]: Abstraction has 2493 states and 3765 transitions. [2024-10-24 20:38:57,345 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 21 states have (on average 2.857142857142857) internal successors, (60), 16 states have internal predecessors, (60), 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) [2024-10-24 20:38:57,346 INFO L276 IsEmpty]: Start isEmpty. Operand 2493 states and 3765 transitions. [2024-10-24 20:38:57,347 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2024-10-24 20:38:57,347 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 20:38:57,347 INFO L215 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] [2024-10-24 20:38:57,361 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2024-10-24 20:38:57,548 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2024-10-24 20:38:57,548 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ackermannErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ackermannErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ackermannErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ackermannErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 5 more)] === [2024-10-24 20:38:57,548 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 20:38:57,548 INFO L85 PathProgramCache]: Analyzing trace with hash -1386196276, now seen corresponding path program 1 times [2024-10-24 20:38:57,549 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 20:38:57,549 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1731098475] [2024-10-24 20:38:57,549 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 20:38:57,549 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 20:38:57,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 20:38:57,567 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2024-10-24 20:38:57,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 20:38:57,580 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2024-10-24 20:38:57,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 20:38:57,592 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2024-10-24 20:38:57,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 20:38:57,595 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 24 proven. 5 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2024-10-24 20:38:57,595 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 20:38:57,595 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1731098475] [2024-10-24 20:38:57,595 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1731098475] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-24 20:38:57,595 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [623705893] [2024-10-24 20:38:57,596 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 20:38:57,596 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-24 20:38:57,596 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-24 20:38:57,597 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-24 20:38:57,598 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2024-10-24 20:38:57,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 20:38:57,634 INFO L255 TraceCheckSpWp]: Trace formula consists of 124 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-10-24 20:38:57,635 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-24 20:38:57,669 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 22 proven. 5 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2024-10-24 20:38:57,669 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-24 20:38:57,765 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 22 proven. 5 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2024-10-24 20:38:57,766 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [623705893] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-24 20:38:57,766 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-24 20:38:57,766 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 7, 7] total 12 [2024-10-24 20:38:57,766 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1792999336] [2024-10-24 20:38:57,766 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-24 20:38:57,767 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-10-24 20:38:57,767 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 20:38:57,767 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-10-24 20:38:57,767 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=99, Unknown=0, NotChecked=0, Total=132 [2024-10-24 20:38:57,767 INFO L87 Difference]: Start difference. First operand 2493 states and 3765 transitions. Second operand has 12 states, 12 states have (on average 3.9166666666666665) internal successors, (47), 12 states have internal predecessors, (47), 4 states have call successors, (6), 2 states have call predecessors, (6), 5 states have return successors, (5), 2 states have call predecessors, (5), 4 states have call successors, (5) [2024-10-24 20:38:57,968 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 20:38:57,968 INFO L93 Difference]: Finished difference Result 3516 states and 5519 transitions. [2024-10-24 20:38:57,969 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-10-24 20:38:57,969 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 3.9166666666666665) internal successors, (47), 12 states have internal predecessors, (47), 4 states have call successors, (6), 2 states have call predecessors, (6), 5 states have return successors, (5), 2 states have call predecessors, (5), 4 states have call successors, (5) Word has length 43 [2024-10-24 20:38:57,969 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-24 20:38:57,976 INFO L225 Difference]: With dead ends: 3516 [2024-10-24 20:38:57,977 INFO L226 Difference]: Without dead ends: 1210 [2024-10-24 20:38:57,987 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 100 GetRequests, 84 SyntacticMatches, 3 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=60, Invalid=150, Unknown=0, NotChecked=0, Total=210 [2024-10-24 20:38:57,988 INFO L432 NwaCegarLoop]: 28 mSDtfsCounter, 57 mSDsluCounter, 75 mSDsCounter, 0 mSdLazyCounter, 133 mSolverCounterSat, 27 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 57 SdHoareTripleChecker+Valid, 103 SdHoareTripleChecker+Invalid, 160 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 27 IncrementalHoareTripleChecker+Valid, 133 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-24 20:38:57,988 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [57 Valid, 103 Invalid, 160 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [27 Valid, 133 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-24 20:38:57,989 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1210 states. [2024-10-24 20:38:58,078 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1210 to 1181. [2024-10-24 20:38:58,081 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1181 states, 880 states have (on average 1.1125) internal successors, (979), 904 states have internal predecessors, (979), 212 states have call successors, (212), 67 states have call predecessors, (212), 85 states have return successors, (333), 209 states have call predecessors, (333), 208 states have call successors, (333) [2024-10-24 20:38:58,086 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1181 states to 1181 states and 1524 transitions. [2024-10-24 20:38:58,087 INFO L78 Accepts]: Start accepts. Automaton has 1181 states and 1524 transitions. Word has length 43 [2024-10-24 20:38:58,087 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-24 20:38:58,087 INFO L471 AbstractCegarLoop]: Abstraction has 1181 states and 1524 transitions. [2024-10-24 20:38:58,088 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 3.9166666666666665) internal successors, (47), 12 states have internal predecessors, (47), 4 states have call successors, (6), 2 states have call predecessors, (6), 5 states have return successors, (5), 2 states have call predecessors, (5), 4 states have call successors, (5) [2024-10-24 20:38:58,088 INFO L276 IsEmpty]: Start isEmpty. Operand 1181 states and 1524 transitions. [2024-10-24 20:38:58,088 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2024-10-24 20:38:58,088 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 20:38:58,089 INFO L215 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] [2024-10-24 20:38:58,101 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2024-10-24 20:38:58,289 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2024-10-24 20:38:58,289 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ackermannErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ackermannErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ackermannErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ackermannErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 5 more)] === [2024-10-24 20:38:58,290 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 20:38:58,290 INFO L85 PathProgramCache]: Analyzing trace with hash 553185385, now seen corresponding path program 1 times [2024-10-24 20:38:58,290 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 20:38:58,290 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1847189184] [2024-10-24 20:38:58,290 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 20:38:58,290 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 20:38:58,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 20:38:58,358 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2024-10-24 20:38:58,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 20:38:58,390 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2024-10-24 20:38:58,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 20:38:58,409 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-10-24 20:38:58,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 20:38:58,435 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2024-10-24 20:38:58,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 20:38:58,466 INFO L134 CoverageAnalysis]: Checked inductivity of 58 backedges. 21 proven. 16 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2024-10-24 20:38:58,467 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 20:38:58,467 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1847189184] [2024-10-24 20:38:58,467 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1847189184] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-24 20:38:58,467 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1971711804] [2024-10-24 20:38:58,467 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 20:38:58,467 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-24 20:38:58,467 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-24 20:38:58,468 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-24 20:38:58,477 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2024-10-24 20:38:58,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 20:38:58,519 INFO L255 TraceCheckSpWp]: Trace formula consists of 146 conjuncts, 15 conjuncts are in the unsatisfiable core [2024-10-24 20:38:58,521 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-24 20:38:58,557 INFO L134 CoverageAnalysis]: Checked inductivity of 58 backedges. 14 proven. 18 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2024-10-24 20:38:58,557 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-24 20:38:58,942 INFO L134 CoverageAnalysis]: Checked inductivity of 58 backedges. 18 proven. 19 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2024-10-24 20:38:58,943 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1971711804] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-24 20:38:58,943 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-24 20:38:58,943 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 11, 13] total 26 [2024-10-24 20:38:58,943 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1027153121] [2024-10-24 20:38:58,943 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-24 20:38:58,943 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2024-10-24 20:38:58,944 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 20:38:58,944 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2024-10-24 20:38:58,944 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=88, Invalid=614, Unknown=0, NotChecked=0, Total=702 [2024-10-24 20:38:58,944 INFO L87 Difference]: Start difference. First operand 1181 states and 1524 transitions. Second operand has 27 states, 26 states have (on average 2.1923076923076925) internal successors, (57), 21 states have internal predecessors, (57), 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) [2024-10-24 20:39:00,079 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 20:39:00,079 INFO L93 Difference]: Finished difference Result 3166 states and 5903 transitions. [2024-10-24 20:39:00,080 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 57 states. [2024-10-24 20:39:00,080 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 26 states have (on average 2.1923076923076925) internal successors, (57), 21 states have internal predecessors, (57), 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 52 [2024-10-24 20:39:00,080 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-24 20:39:00,102 INFO L225 Difference]: With dead ends: 3166 [2024-10-24 20:39:00,102 INFO L226 Difference]: Without dead ends: 3160 [2024-10-24 20:39:00,105 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 176 GetRequests, 99 SyntacticMatches, 0 SemanticMatches, 77 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1684 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=1079, Invalid=5083, Unknown=0, NotChecked=0, Total=6162 [2024-10-24 20:39:00,105 INFO L432 NwaCegarLoop]: 21 mSDtfsCounter, 168 mSDsluCounter, 233 mSDsCounter, 0 mSdLazyCounter, 591 mSolverCounterSat, 224 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 180 SdHoareTripleChecker+Valid, 254 SdHoareTripleChecker+Invalid, 815 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 224 IncrementalHoareTripleChecker+Valid, 591 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-10-24 20:39:00,105 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [180 Valid, 254 Invalid, 815 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [224 Valid, 591 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-10-24 20:39:00,108 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3160 states. [2024-10-24 20:39:00,390 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3160 to 2248. [2024-10-24 20:39:00,393 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2248 states, 1551 states have (on average 1.0870406189555126) internal successors, (1686), 1579 states have internal predecessors, (1686), 429 states have call successors, (429), 81 states have call predecessors, (429), 264 states have return successors, (2579), 587 states have call predecessors, (2579), 423 states have call successors, (2579) [2024-10-24 20:39:00,402 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2248 states to 2248 states and 4694 transitions. [2024-10-24 20:39:00,404 INFO L78 Accepts]: Start accepts. Automaton has 2248 states and 4694 transitions. Word has length 52 [2024-10-24 20:39:00,404 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-24 20:39:00,404 INFO L471 AbstractCegarLoop]: Abstraction has 2248 states and 4694 transitions. [2024-10-24 20:39:00,404 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 26 states have (on average 2.1923076923076925) internal successors, (57), 21 states have internal predecessors, (57), 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) [2024-10-24 20:39:00,405 INFO L276 IsEmpty]: Start isEmpty. Operand 2248 states and 4694 transitions. [2024-10-24 20:39:00,406 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2024-10-24 20:39:00,406 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 20:39:00,406 INFO L215 NwaCegarLoop]: trace histogram [8, 8, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1] [2024-10-24 20:39:00,421 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Ended with exit code 0 [2024-10-24 20:39:00,611 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2024-10-24 20:39:00,611 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting ackermannErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ackermannErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ackermannErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ackermannErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 5 more)] === [2024-10-24 20:39:00,612 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 20:39:00,612 INFO L85 PathProgramCache]: Analyzing trace with hash -352778574, now seen corresponding path program 1 times [2024-10-24 20:39:00,612 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 20:39:00,612 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [461996584] [2024-10-24 20:39:00,612 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 20:39:00,612 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 20:39:00,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 20:39:00,738 INFO L134 CoverageAnalysis]: Checked inductivity of 120 backedges. 0 proven. 111 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2024-10-24 20:39:00,738 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 20:39:00,738 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [461996584] [2024-10-24 20:39:00,738 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [461996584] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-24 20:39:00,738 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [948565821] [2024-10-24 20:39:00,739 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 20:39:00,739 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-24 20:39:00,739 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-24 20:39:00,740 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-24 20:39:00,741 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2024-10-24 20:39:00,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 20:39:00,795 INFO L255 TraceCheckSpWp]: Trace formula consists of 150 conjuncts, 18 conjuncts are in the unsatisfiable core [2024-10-24 20:39:00,796 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-24 20:39:00,837 INFO L134 CoverageAnalysis]: Checked inductivity of 120 backedges. 0 proven. 111 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2024-10-24 20:39:00,837 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-24 20:39:00,963 INFO L134 CoverageAnalysis]: Checked inductivity of 120 backedges. 0 proven. 111 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2024-10-24 20:39:00,964 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [948565821] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-24 20:39:00,964 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-24 20:39:00,964 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12, 12] total 23 [2024-10-24 20:39:00,964 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1741853867] [2024-10-24 20:39:00,964 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-24 20:39:00,964 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2024-10-24 20:39:00,964 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 20:39:00,965 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2024-10-24 20:39:00,965 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=136, Invalid=416, Unknown=0, NotChecked=0, Total=552 [2024-10-24 20:39:00,965 INFO L87 Difference]: Start difference. First operand 2248 states and 4694 transitions. Second operand has 24 states, 23 states have (on average 3.608695652173913) internal successors, (83), 14 states have internal predecessors, (83), 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) [2024-10-24 20:39:01,986 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 20:39:01,986 INFO L93 Difference]: Finished difference Result 6167 states and 13111 transitions. [2024-10-24 20:39:01,986 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2024-10-24 20:39:01,987 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 23 states have (on average 3.608695652173913) internal successors, (83), 14 states have internal predecessors, (83), 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 56 [2024-10-24 20:39:01,987 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-24 20:39:02,030 INFO L225 Difference]: With dead ends: 6167 [2024-10-24 20:39:02,030 INFO L226 Difference]: Without dead ends: 6166 [2024-10-24 20:39:02,034 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 138 GetRequests, 106 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 180 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=311, Invalid=811, Unknown=0, NotChecked=0, Total=1122 [2024-10-24 20:39:02,035 INFO L432 NwaCegarLoop]: 28 mSDtfsCounter, 524 mSDsluCounter, 296 mSDsCounter, 0 mSdLazyCounter, 306 mSolverCounterSat, 132 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 527 SdHoareTripleChecker+Valid, 324 SdHoareTripleChecker+Invalid, 438 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 132 IncrementalHoareTripleChecker+Valid, 306 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-10-24 20:39:02,035 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [527 Valid, 324 Invalid, 438 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [132 Valid, 306 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-10-24 20:39:02,039 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6166 states. [2024-10-24 20:39:02,775 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6166 to 6082. [2024-10-24 20:39:02,785 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6082 states, 4221 states have (on average 1.0888415067519546) internal successors, (4596), 4303 states have internal predecessors, (4596), 1161 states have call successors, (1161), 231 states have call predecessors, (1161), 696 states have return successors, (6995), 1547 states have call predecessors, (6995), 1155 states have call successors, (6995) [2024-10-24 20:39:02,851 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6082 states to 6082 states and 12752 transitions. [2024-10-24 20:39:02,855 INFO L78 Accepts]: Start accepts. Automaton has 6082 states and 12752 transitions. Word has length 56 [2024-10-24 20:39:02,856 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-24 20:39:02,856 INFO L471 AbstractCegarLoop]: Abstraction has 6082 states and 12752 transitions. [2024-10-24 20:39:02,856 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 23 states have (on average 3.608695652173913) internal successors, (83), 14 states have internal predecessors, (83), 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) [2024-10-24 20:39:02,856 INFO L276 IsEmpty]: Start isEmpty. Operand 6082 states and 12752 transitions. [2024-10-24 20:39:02,858 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2024-10-24 20:39:02,858 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 20:39:02,858 INFO L215 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] [2024-10-24 20:39:02,870 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Ended with exit code 0 [2024-10-24 20:39:03,058 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2024-10-24 20:39:03,059 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting ackermannErr6ASSERT_VIOLATIONINTEGER_OVERFLOW === [ackermannErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ackermannErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ackermannErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 5 more)] === [2024-10-24 20:39:03,059 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 20:39:03,059 INFO L85 PathProgramCache]: Analyzing trace with hash -959769808, now seen corresponding path program 1 times [2024-10-24 20:39:03,059 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 20:39:03,059 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1496063281] [2024-10-24 20:39:03,059 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 20:39:03,059 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 20:39:03,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 20:39:03,125 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2024-10-24 20:39:03,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 20:39:03,171 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2024-10-24 20:39:03,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 20:39:03,196 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-10-24 20:39:03,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 20:39:03,229 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2024-10-24 20:39:03,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 20:39:03,256 INFO L134 CoverageAnalysis]: Checked inductivity of 63 backedges. 36 proven. 6 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2024-10-24 20:39:03,256 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 20:39:03,257 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1496063281] [2024-10-24 20:39:03,257 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1496063281] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-24 20:39:03,257 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1949358039] [2024-10-24 20:39:03,257 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 20:39:03,257 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-24 20:39:03,258 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-24 20:39:03,259 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-24 20:39:03,261 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2024-10-24 20:39:03,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 20:39:03,311 INFO L255 TraceCheckSpWp]: Trace formula consists of 147 conjuncts, 15 conjuncts are in the unsatisfiable core [2024-10-24 20:39:03,312 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-24 20:39:03,359 INFO L134 CoverageAnalysis]: Checked inductivity of 63 backedges. 27 proven. 10 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2024-10-24 20:39:03,359 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-24 20:39:03,801 INFO L134 CoverageAnalysis]: Checked inductivity of 63 backedges. 40 proven. 2 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2024-10-24 20:39:03,802 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1949358039] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-24 20:39:03,802 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-24 20:39:03,802 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 11, 13] total 26 [2024-10-24 20:39:03,803 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1392652078] [2024-10-24 20:39:03,803 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-24 20:39:03,804 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2024-10-24 20:39:03,804 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 20:39:03,804 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2024-10-24 20:39:03,805 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=94, Invalid=608, Unknown=0, NotChecked=0, Total=702 [2024-10-24 20:39:03,806 INFO L87 Difference]: Start difference. First operand 6082 states and 12752 transitions. Second operand has 27 states, 26 states have (on average 2.3461538461538463) internal successors, (61), 21 states have internal predecessors, (61), 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) [2024-10-24 20:39:07,474 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 20:39:07,474 INFO L93 Difference]: Finished difference Result 24357 states and 94286 transitions. [2024-10-24 20:39:07,475 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 57 states. [2024-10-24 20:39:07,475 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 26 states have (on average 2.3461538461538463) internal successors, (61), 21 states have internal predecessors, (61), 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 54 [2024-10-24 20:39:07,475 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-24 20:39:07,652 INFO L225 Difference]: With dead ends: 24357 [2024-10-24 20:39:07,652 INFO L226 Difference]: Without dead ends: 19149 [2024-10-24 20:39:07,748 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 179 GetRequests, 103 SyntacticMatches, 0 SemanticMatches, 76 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1243 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=1184, Invalid=4822, Unknown=0, NotChecked=0, Total=6006 [2024-10-24 20:39:07,748 INFO L432 NwaCegarLoop]: 37 mSDtfsCounter, 114 mSDsluCounter, 295 mSDsCounter, 0 mSdLazyCounter, 875 mSolverCounterSat, 120 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 114 SdHoareTripleChecker+Valid, 332 SdHoareTripleChecker+Invalid, 995 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 120 IncrementalHoareTripleChecker+Valid, 875 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-10-24 20:39:07,749 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [114 Valid, 332 Invalid, 995 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [120 Valid, 875 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-10-24 20:39:07,761 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19149 states. [2024-10-24 20:39:10,893 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19149 to 13375. [2024-10-24 20:39:10,916 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13375 states, 8765 states have (on average 1.057159155733029) internal successors, (9266), 8808 states have internal predecessors, (9266), 2669 states have call successors, (2669), 308 states have call predecessors, (2669), 1937 states have return successors, (37183), 4258 states have call predecessors, (37183), 2658 states have call successors, (37183) [2024-10-24 20:39:11,061 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13375 states to 13375 states and 49118 transitions. [2024-10-24 20:39:11,070 INFO L78 Accepts]: Start accepts. Automaton has 13375 states and 49118 transitions. Word has length 54 [2024-10-24 20:39:11,071 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-24 20:39:11,071 INFO L471 AbstractCegarLoop]: Abstraction has 13375 states and 49118 transitions. [2024-10-24 20:39:11,071 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 26 states have (on average 2.3461538461538463) internal successors, (61), 21 states have internal predecessors, (61), 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) [2024-10-24 20:39:11,071 INFO L276 IsEmpty]: Start isEmpty. Operand 13375 states and 49118 transitions. [2024-10-24 20:39:11,072 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2024-10-24 20:39:11,072 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 20:39:11,073 INFO L215 NwaCegarLoop]: trace histogram [7, 7, 7, 7, 7, 6, 6, 6, 1, 1, 1, 1, 1] [2024-10-24 20:39:11,085 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Ended with exit code 0 [2024-10-24 20:39:11,273 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-24 20:39:11,273 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting ackermannErr6ASSERT_VIOLATIONINTEGER_OVERFLOW === [ackermannErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ackermannErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ackermannErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 5 more)] === [2024-10-24 20:39:11,274 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 20:39:11,274 INFO L85 PathProgramCache]: Analyzing trace with hash -1078600670, now seen corresponding path program 2 times [2024-10-24 20:39:11,274 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 20:39:11,274 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2125738759] [2024-10-24 20:39:11,274 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 20:39:11,274 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 20:39:11,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 20:39:11,409 INFO L134 CoverageAnalysis]: Checked inductivity of 156 backedges. 0 proven. 156 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 20:39:11,409 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 20:39:11,409 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2125738759] [2024-10-24 20:39:11,409 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2125738759] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-24 20:39:11,409 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1794771760] [2024-10-24 20:39:11,410 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-10-24 20:39:11,410 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-24 20:39:11,410 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-24 20:39:11,411 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-24 20:39:11,412 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2024-10-24 20:39:11,459 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-10-24 20:39:11,459 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-24 20:39:11,460 INFO L255 TraceCheckSpWp]: Trace formula consists of 140 conjuncts, 16 conjuncts are in the unsatisfiable core [2024-10-24 20:39:11,461 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-24 20:39:11,511 INFO L134 CoverageAnalysis]: Checked inductivity of 156 backedges. 0 proven. 156 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 20:39:11,511 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-24 20:39:11,744 INFO L134 CoverageAnalysis]: Checked inductivity of 156 backedges. 0 proven. 156 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 20:39:11,744 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1794771760] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-24 20:39:11,745 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-24 20:39:11,745 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16, 16] total 31 [2024-10-24 20:39:11,745 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1177976061] [2024-10-24 20:39:11,745 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-24 20:39:11,745 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2024-10-24 20:39:11,745 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 20:39:11,746 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2024-10-24 20:39:11,746 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=244, Invalid=748, Unknown=0, NotChecked=0, Total=992 [2024-10-24 20:39:11,746 INFO L87 Difference]: Start difference. First operand 13375 states and 49118 transitions. Second operand has 32 states, 29 states have (on average 3.4482758620689653) internal successors, (100), 18 states have internal predecessors, (100), 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) [2024-10-24 20:39:15,209 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 20:39:15,209 INFO L93 Difference]: Finished difference Result 20224 states and 73220 transitions. [2024-10-24 20:39:15,210 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2024-10-24 20:39:15,211 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 29 states have (on average 3.4482758620689653) internal successors, (100), 18 states have internal predecessors, (100), 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 58 [2024-10-24 20:39:15,211 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-24 20:39:15,380 INFO L225 Difference]: With dead ends: 20224 [2024-10-24 20:39:15,380 INFO L226 Difference]: Without dead ends: 20223 [2024-10-24 20:39:15,397 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 144 GetRequests, 100 SyntacticMatches, 0 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 364 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=573, Invalid=1497, Unknown=0, NotChecked=0, Total=2070 [2024-10-24 20:39:15,398 INFO L432 NwaCegarLoop]: 22 mSDtfsCounter, 528 mSDsluCounter, 387 mSDsCounter, 0 mSdLazyCounter, 454 mSolverCounterSat, 110 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 543 SdHoareTripleChecker+Valid, 409 SdHoareTripleChecker+Invalid, 564 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 110 IncrementalHoareTripleChecker+Valid, 454 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-10-24 20:39:15,398 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [543 Valid, 409 Invalid, 564 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [110 Valid, 454 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-10-24 20:39:15,412 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20223 states. [2024-10-24 20:39:19,929 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20223 to 19839. [2024-10-24 20:39:19,952 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19839 states, 13021 states have (on average 1.049535365947316) internal successors, (13666), 13128 states have internal predecessors, (13666), 3917 states have call successors, (3917), 452 states have call predecessors, (3917), 2897 states have return successors, (53631), 6258 states have call predecessors, (53631), 3906 states have call successors, (53631) [2024-10-24 20:39:20,177 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19839 states to 19839 states and 71214 transitions. [2024-10-24 20:39:20,190 INFO L78 Accepts]: Start accepts. Automaton has 19839 states and 71214 transitions. Word has length 58 [2024-10-24 20:39:20,190 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-24 20:39:20,190 INFO L471 AbstractCegarLoop]: Abstraction has 19839 states and 71214 transitions. [2024-10-24 20:39:20,191 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 29 states have (on average 3.4482758620689653) internal successors, (100), 18 states have internal predecessors, (100), 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) [2024-10-24 20:39:20,191 INFO L276 IsEmpty]: Start isEmpty. Operand 19839 states and 71214 transitions. [2024-10-24 20:39:20,194 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2024-10-24 20:39:20,194 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 20:39:20,194 INFO L215 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] [2024-10-24 20:39:20,207 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Ended with exit code 0 [2024-10-24 20:39:20,395 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,16 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-24 20:39:20,396 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting ackermannErr6ASSERT_VIOLATIONINTEGER_OVERFLOW === [ackermannErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ackermannErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ackermannErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 5 more)] === [2024-10-24 20:39:20,396 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 20:39:20,396 INFO L85 PathProgramCache]: Analyzing trace with hash -999752591, now seen corresponding path program 2 times [2024-10-24 20:39:20,396 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 20:39:20,396 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [890444073] [2024-10-24 20:39:20,396 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 20:39:20,397 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 20:39:20,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 20:39:20,475 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2024-10-24 20:39:20,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 20:39:20,511 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-10-24 20:39:20,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 20:39:20,542 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2024-10-24 20:39:20,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 20:39:20,567 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-10-24 20:39:20,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 20:39:20,595 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2024-10-24 20:39:20,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 20:39:20,621 INFO L134 CoverageAnalysis]: Checked inductivity of 163 backedges. 86 proven. 16 refuted. 0 times theorem prover too weak. 61 trivial. 0 not checked. [2024-10-24 20:39:20,622 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 20:39:20,622 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [890444073] [2024-10-24 20:39:20,622 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [890444073] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-24 20:39:20,622 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [5967679] [2024-10-24 20:39:20,622 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-10-24 20:39:20,622 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-24 20:39:20,622 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-24 20:39:20,624 INFO L229 MonitoredProcess]: Starting monitored process 17 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-24 20:39:20,625 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2024-10-24 20:39:20,674 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-10-24 20:39:20,675 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-24 20:39:20,675 INFO L255 TraceCheckSpWp]: Trace formula consists of 201 conjuncts, 19 conjuncts are in the unsatisfiable core [2024-10-24 20:39:20,676 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-24 20:39:20,722 INFO L134 CoverageAnalysis]: Checked inductivity of 163 backedges. 75 proven. 22 refuted. 0 times theorem prover too weak. 66 trivial. 0 not checked. [2024-10-24 20:39:20,722 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-24 20:39:21,304 INFO L134 CoverageAnalysis]: Checked inductivity of 163 backedges. 94 proven. 8 refuted. 0 times theorem prover too weak. 61 trivial. 0 not checked. [2024-10-24 20:39:21,305 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [5967679] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-24 20:39:21,305 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-24 20:39:21,305 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 14, 16] total 32 [2024-10-24 20:39:21,305 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [382056563] [2024-10-24 20:39:21,305 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-24 20:39:21,305 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2024-10-24 20:39:21,305 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 20:39:21,306 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2024-10-24 20:39:21,306 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=126, Invalid=930, Unknown=0, NotChecked=0, Total=1056 [2024-10-24 20:39:21,306 INFO L87 Difference]: Start difference. First operand 19839 states and 71214 transitions. Second operand has 33 states, 32 states have (on average 2.40625) internal successors, (77), 23 states have internal predecessors, (77), 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) [2024-10-24 20:39:24,066 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 20:39:24,066 INFO L93 Difference]: Finished difference Result 30264 states and 111647 transitions. [2024-10-24 20:39:24,066 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2024-10-24 20:39:24,067 INFO L78 Accepts]: Start accepts. Automaton has has 33 states, 32 states have (on average 2.40625) internal successors, (77), 23 states have internal predecessors, (77), 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 79 [2024-10-24 20:39:24,067 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-24 20:39:24,150 INFO L225 Difference]: With dead ends: 30264 [2024-10-24 20:39:24,150 INFO L226 Difference]: Without dead ends: 12259 [2024-10-24 20:39:24,481 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 211 GetRequests, 154 SyntacticMatches, 0 SemanticMatches, 57 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 540 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=608, Invalid=2814, Unknown=0, NotChecked=0, Total=3422 [2024-10-24 20:39:24,482 INFO L432 NwaCegarLoop]: 39 mSDtfsCounter, 127 mSDsluCounter, 362 mSDsCounter, 0 mSdLazyCounter, 873 mSolverCounterSat, 87 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 127 SdHoareTripleChecker+Valid, 401 SdHoareTripleChecker+Invalid, 960 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 87 IncrementalHoareTripleChecker+Valid, 873 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-10-24 20:39:24,482 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [127 Valid, 401 Invalid, 960 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [87 Valid, 873 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-10-24 20:39:24,488 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12259 states. [2024-10-24 20:39:26,513 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12259 to 11691. [2024-10-24 20:39:26,523 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11691 states, 8104 states have (on average 1.0737907206317867) internal successors, (8702), 8383 states have internal predecessors, (8702), 2284 states have call successors, (2284), 476 states have call predecessors, (2284), 1299 states have return successors, (7789), 2831 states have call predecessors, (7789), 2276 states have call successors, (7789) [2024-10-24 20:39:26,558 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11691 states to 11691 states and 18775 transitions. [2024-10-24 20:39:26,567 INFO L78 Accepts]: Start accepts. Automaton has 11691 states and 18775 transitions. Word has length 79 [2024-10-24 20:39:26,568 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-24 20:39:26,568 INFO L471 AbstractCegarLoop]: Abstraction has 11691 states and 18775 transitions. [2024-10-24 20:39:26,568 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 33 states, 32 states have (on average 2.40625) internal successors, (77), 23 states have internal predecessors, (77), 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) [2024-10-24 20:39:26,568 INFO L276 IsEmpty]: Start isEmpty. Operand 11691 states and 18775 transitions. [2024-10-24 20:39:26,570 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2024-10-24 20:39:26,570 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 20:39:26,570 INFO L215 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] [2024-10-24 20:39:26,586 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Forceful destruction successful, exit code 0 [2024-10-24 20:39:26,771 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,17 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-24 20:39:26,771 INFO L396 AbstractCegarLoop]: === Iteration 22 === Targeting ackermannErr6ASSERT_VIOLATIONINTEGER_OVERFLOW === [ackermannErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ackermannErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ackermannErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 5 more)] === [2024-10-24 20:39:26,772 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 20:39:26,772 INFO L85 PathProgramCache]: Analyzing trace with hash -307523056, now seen corresponding path program 3 times [2024-10-24 20:39:26,772 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 20:39:26,772 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [767793488] [2024-10-24 20:39:26,772 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 20:39:26,773 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 20:39:26,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 20:39:27,050 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2024-10-24 20:39:27,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 20:39:27,072 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-10-24 20:39:27,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 20:39:27,100 INFO L134 CoverageAnalysis]: Checked inductivity of 144 backedges. 62 proven. 77 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-10-24 20:39:27,100 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 20:39:27,101 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [767793488] [2024-10-24 20:39:27,101 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [767793488] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-24 20:39:27,101 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [799621753] [2024-10-24 20:39:27,101 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-10-24 20:39:27,101 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-24 20:39:27,101 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-24 20:39:27,102 INFO L229 MonitoredProcess]: Starting monitored process 18 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-24 20:39:27,104 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2024-10-24 20:39:27,160 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 8 check-sat command(s) [2024-10-24 20:39:27,161 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-24 20:39:27,162 INFO L255 TraceCheckSpWp]: Trace formula consists of 167 conjuncts, 17 conjuncts are in the unsatisfiable core [2024-10-24 20:39:27,163 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-24 20:39:27,225 INFO L134 CoverageAnalysis]: Checked inductivity of 144 backedges. 60 proven. 79 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-10-24 20:39:27,226 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-24 20:39:27,489 INFO L134 CoverageAnalysis]: Checked inductivity of 144 backedges. 64 proven. 75 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-10-24 20:39:27,490 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [799621753] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-24 20:39:27,490 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-24 20:39:27,490 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16, 16] total 33 [2024-10-24 20:39:27,490 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1098261788] [2024-10-24 20:39:27,490 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-24 20:39:27,490 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2024-10-24 20:39:27,490 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 20:39:27,491 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2024-10-24 20:39:27,491 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=173, Invalid=949, Unknown=0, NotChecked=0, Total=1122 [2024-10-24 20:39:27,491 INFO L87 Difference]: Start difference. First operand 11691 states and 18775 transitions. Second operand has 34 states, 33 states have (on average 3.090909090909091) internal successors, (102), 22 states have internal predecessors, (102), 11 states have call successors, (13), 11 states have call predecessors, (13), 5 states have return successors, (5), 4 states have call predecessors, (5), 1 states have call successors, (5) [2024-10-24 20:39:29,223 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 20:39:29,223 INFO L93 Difference]: Finished difference Result 12446 states and 19917 transitions. [2024-10-24 20:39:29,223 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2024-10-24 20:39:29,224 INFO L78 Accepts]: Start accepts. Automaton has has 34 states, 33 states have (on average 3.090909090909091) internal successors, (102), 22 states have internal predecessors, (102), 11 states have call successors, (13), 11 states have call predecessors, (13), 5 states have return successors, (5), 4 states have call predecessors, (5), 1 states have call successors, (5) Word has length 67 [2024-10-24 20:39:29,224 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-24 20:39:29,268 INFO L225 Difference]: With dead ends: 12446 [2024-10-24 20:39:29,269 INFO L226 Difference]: Without dead ends: 12445 [2024-10-24 20:39:29,273 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 174 GetRequests, 125 SyntacticMatches, 0 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 492 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=499, Invalid=2051, Unknown=0, NotChecked=0, Total=2550 [2024-10-24 20:39:29,274 INFO L432 NwaCegarLoop]: 32 mSDtfsCounter, 152 mSDsluCounter, 267 mSDsCounter, 0 mSdLazyCounter, 530 mSolverCounterSat, 106 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 152 SdHoareTripleChecker+Valid, 299 SdHoareTripleChecker+Invalid, 636 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 106 IncrementalHoareTripleChecker+Valid, 530 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-10-24 20:39:29,274 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [152 Valid, 299 Invalid, 636 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [106 Valid, 530 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-10-24 20:39:29,279 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12445 states. [2024-10-24 20:39:30,750 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12445 to 11799. [2024-10-24 20:39:30,759 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11799 states, 8176 states have (on average 1.0699608610567515) internal successors, (8748), 8455 states have internal predecessors, (8748), 2284 states have call successors, (2284), 476 states have call predecessors, (2284), 1335 states have return successors, (7883), 2867 states have call predecessors, (7883), 2276 states have call successors, (7883) [2024-10-24 20:39:30,793 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11799 states to 11799 states and 18915 transitions. [2024-10-24 20:39:30,800 INFO L78 Accepts]: Start accepts. Automaton has 11799 states and 18915 transitions. Word has length 67 [2024-10-24 20:39:30,801 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-24 20:39:30,801 INFO L471 AbstractCegarLoop]: Abstraction has 11799 states and 18915 transitions. [2024-10-24 20:39:30,801 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 33 states have (on average 3.090909090909091) internal successors, (102), 22 states have internal predecessors, (102), 11 states have call successors, (13), 11 states have call predecessors, (13), 5 states have return successors, (5), 4 states have call predecessors, (5), 1 states have call successors, (5) [2024-10-24 20:39:30,801 INFO L276 IsEmpty]: Start isEmpty. Operand 11799 states and 18915 transitions. [2024-10-24 20:39:30,804 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2024-10-24 20:39:30,804 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 20:39:30,804 INFO L215 NwaCegarLoop]: trace histogram [11, 7, 7, 5, 5, 5, 5, 5, 5, 4, 4, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1] [2024-10-24 20:39:30,815 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Forceful destruction successful, exit code 0 [2024-10-24 20:39:31,004 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21,18 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-24 20:39:31,005 INFO L396 AbstractCegarLoop]: === Iteration 23 === Targeting ackermannErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ackermannErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ackermannErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ackermannErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 5 more)] === [2024-10-24 20:39:31,005 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 20:39:31,005 INFO L85 PathProgramCache]: Analyzing trace with hash 1534883348, now seen corresponding path program 2 times [2024-10-24 20:39:31,005 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 20:39:31,005 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2050286689] [2024-10-24 20:39:31,005 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 20:39:31,005 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 20:39:31,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 20:39:31,041 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2024-10-24 20:39:31,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 20:39:31,059 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-10-24 20:39:31,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 20:39:31,092 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2024-10-24 20:39:31,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 20:39:31,121 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2024-10-24 20:39:31,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 20:39:31,144 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-10-24 20:39:31,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 20:39:31,147 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2024-10-24 20:39:31,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 20:39:31,150 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2024-10-24 20:39:31,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 20:39:31,152 INFO L134 CoverageAnalysis]: Checked inductivity of 246 backedges. 119 proven. 28 refuted. 0 times theorem prover too weak. 99 trivial. 0 not checked. [2024-10-24 20:39:31,152 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 20:39:31,152 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2050286689] [2024-10-24 20:39:31,152 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2050286689] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-24 20:39:31,152 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [39887158] [2024-10-24 20:39:31,152 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-10-24 20:39:31,152 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-24 20:39:31,153 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-24 20:39:31,154 INFO L229 MonitoredProcess]: Starting monitored process 19 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-24 20:39:31,155 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2024-10-24 20:39:31,214 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-10-24 20:39:31,215 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-24 20:39:31,216 INFO L255 TraceCheckSpWp]: Trace formula consists of 244 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-10-24 20:39:31,217 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-24 20:39:31,262 INFO L134 CoverageAnalysis]: Checked inductivity of 246 backedges. 121 proven. 15 refuted. 0 times theorem prover too weak. 110 trivial. 0 not checked. [2024-10-24 20:39:31,262 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-24 20:39:31,487 INFO L134 CoverageAnalysis]: Checked inductivity of 246 backedges. 121 proven. 26 refuted. 0 times theorem prover too weak. 99 trivial. 0 not checked. [2024-10-24 20:39:31,487 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [39887158] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-24 20:39:31,487 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-24 20:39:31,487 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 6, 8] total 14 [2024-10-24 20:39:31,488 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1047892727] [2024-10-24 20:39:31,488 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-24 20:39:31,489 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-10-24 20:39:31,489 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 20:39:31,489 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-10-24 20:39:31,489 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=132, Unknown=0, NotChecked=0, Total=182 [2024-10-24 20:39:31,490 INFO L87 Difference]: Start difference. First operand 11799 states and 18915 transitions. Second operand has 14 states, 14 states have (on average 5.928571428571429) internal successors, (83), 14 states have internal predecessors, (83), 12 states have call successors, (14), 2 states have call predecessors, (14), 7 states have return successors, (14), 6 states have call predecessors, (14), 11 states have call successors, (14) [2024-10-24 20:39:33,136 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 20:39:33,137 INFO L93 Difference]: Finished difference Result 22583 states and 40812 transitions. [2024-10-24 20:39:33,137 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-10-24 20:39:33,137 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 5.928571428571429) internal successors, (83), 14 states have internal predecessors, (83), 12 states have call successors, (14), 2 states have call predecessors, (14), 7 states have return successors, (14), 6 states have call predecessors, (14), 11 states have call successors, (14) Word has length 96 [2024-10-24 20:39:33,137 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-24 20:39:33,196 INFO L225 Difference]: With dead ends: 22583 [2024-10-24 20:39:33,196 INFO L226 Difference]: Without dead ends: 12983 [2024-10-24 20:39:33,257 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 215 GetRequests, 197 SyntacticMatches, 3 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 61 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=87, Invalid=185, Unknown=0, NotChecked=0, Total=272 [2024-10-24 20:39:33,257 INFO L432 NwaCegarLoop]: 30 mSDtfsCounter, 45 mSDsluCounter, 65 mSDsCounter, 0 mSdLazyCounter, 146 mSolverCounterSat, 27 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 47 SdHoareTripleChecker+Valid, 95 SdHoareTripleChecker+Invalid, 173 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 27 IncrementalHoareTripleChecker+Valid, 146 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-24 20:39:33,257 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [47 Valid, 95 Invalid, 173 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [27 Valid, 146 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-24 20:39:33,264 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12983 states. [2024-10-24 20:39:35,188 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12983 to 11793. [2024-10-24 20:39:35,197 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11793 states, 8173 states have (on average 1.0699865410497982) internal successors, (8745), 8452 states have internal predecessors, (8745), 2281 states have call successors, (2281), 476 states have call predecessors, (2281), 1335 states have return successors, (7803), 2864 states have call predecessors, (7803), 2246 states have call successors, (7803) [2024-10-24 20:39:35,232 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11793 states to 11793 states and 18829 transitions. [2024-10-24 20:39:35,241 INFO L78 Accepts]: Start accepts. Automaton has 11793 states and 18829 transitions. Word has length 96 [2024-10-24 20:39:35,241 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-24 20:39:35,241 INFO L471 AbstractCegarLoop]: Abstraction has 11793 states and 18829 transitions. [2024-10-24 20:39:35,242 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 5.928571428571429) internal successors, (83), 14 states have internal predecessors, (83), 12 states have call successors, (14), 2 states have call predecessors, (14), 7 states have return successors, (14), 6 states have call predecessors, (14), 11 states have call successors, (14) [2024-10-24 20:39:35,242 INFO L276 IsEmpty]: Start isEmpty. Operand 11793 states and 18829 transitions. [2024-10-24 20:39:35,245 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2024-10-24 20:39:35,245 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 20:39:35,245 INFO L215 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] [2024-10-24 20:39:35,258 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Forceful destruction successful, exit code 0 [2024-10-24 20:39:35,449 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22,19 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-24 20:39:35,450 INFO L396 AbstractCegarLoop]: === Iteration 24 === Targeting ackermannErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ackermannErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ackermannErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ackermannErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 5 more)] === [2024-10-24 20:39:35,451 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 20:39:35,451 INFO L85 PathProgramCache]: Analyzing trace with hash 872239358, now seen corresponding path program 3 times [2024-10-24 20:39:35,451 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 20:39:35,451 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1878994489] [2024-10-24 20:39:35,451 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 20:39:35,451 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 20:39:35,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 20:39:35,497 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2024-10-24 20:39:35,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 20:39:35,547 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2024-10-24 20:39:35,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 20:39:35,583 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2024-10-24 20:39:35,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 20:39:35,620 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-10-24 20:39:35,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 20:39:35,655 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2024-10-24 20:39:35,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 20:39:35,672 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-10-24 20:39:35,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 20:39:35,700 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2024-10-24 20:39:35,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 20:39:35,704 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2024-10-24 20:39:35,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 20:39:35,711 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2024-10-24 20:39:35,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 20:39:35,714 INFO L134 CoverageAnalysis]: Checked inductivity of 266 backedges. 117 proven. 51 refuted. 0 times theorem prover too weak. 98 trivial. 0 not checked. [2024-10-24 20:39:35,714 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 20:39:35,714 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1878994489] [2024-10-24 20:39:35,714 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1878994489] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-24 20:39:35,714 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1704042319] [2024-10-24 20:39:35,715 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-10-24 20:39:35,715 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-24 20:39:35,715 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-24 20:39:35,716 INFO L229 MonitoredProcess]: Starting monitored process 20 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-24 20:39:35,717 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2024-10-24 20:39:35,779 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s) [2024-10-24 20:39:35,779 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-24 20:39:35,780 INFO L255 TraceCheckSpWp]: Trace formula consists of 226 conjuncts, 12 conjuncts are in the unsatisfiable core [2024-10-24 20:39:35,781 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-24 20:39:35,839 INFO L134 CoverageAnalysis]: Checked inductivity of 266 backedges. 153 proven. 26 refuted. 0 times theorem prover too weak. 87 trivial. 0 not checked. [2024-10-24 20:39:35,839 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-24 20:39:36,387 INFO L134 CoverageAnalysis]: Checked inductivity of 266 backedges. 123 proven. 57 refuted. 0 times theorem prover too weak. 86 trivial. 0 not checked. [2024-10-24 20:39:36,388 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1704042319] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-24 20:39:36,388 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-24 20:39:36,388 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 11] total 17 [2024-10-24 20:39:36,388 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [432253661] [2024-10-24 20:39:36,388 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-24 20:39:36,388 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2024-10-24 20:39:36,388 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 20:39:36,389 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2024-10-24 20:39:36,391 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=70, Invalid=202, Unknown=0, NotChecked=0, Total=272 [2024-10-24 20:39:36,391 INFO L87 Difference]: Start difference. First operand 11793 states and 18829 transitions. Second operand has 17 states, 17 states have (on average 4.882352941176471) internal successors, (83), 17 states have internal predecessors, (83), 9 states have call successors, (14), 2 states have call predecessors, (14), 7 states have return successors, (17), 5 states have call predecessors, (17), 9 states have call successors, (17) [2024-10-24 20:39:38,486 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 20:39:38,486 INFO L93 Difference]: Finished difference Result 24298 states and 49195 transitions. [2024-10-24 20:39:38,487 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-10-24 20:39:38,487 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 4.882352941176471) internal successors, (83), 17 states have internal predecessors, (83), 9 states have call successors, (14), 2 states have call predecessors, (14), 7 states have return successors, (17), 5 states have call predecessors, (17), 9 states have call successors, (17) Word has length 99 [2024-10-24 20:39:38,487 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-24 20:39:38,558 INFO L225 Difference]: With dead ends: 24298 [2024-10-24 20:39:38,558 INFO L226 Difference]: Without dead ends: 14732 [2024-10-24 20:39:38,617 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 228 GetRequests, 205 SyntacticMatches, 6 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 88 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=98, Invalid=244, Unknown=0, NotChecked=0, Total=342 [2024-10-24 20:39:38,617 INFO L432 NwaCegarLoop]: 32 mSDtfsCounter, 69 mSDsluCounter, 88 mSDsCounter, 0 mSdLazyCounter, 177 mSolverCounterSat, 29 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 73 SdHoareTripleChecker+Valid, 120 SdHoareTripleChecker+Invalid, 206 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 29 IncrementalHoareTripleChecker+Valid, 177 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-24 20:39:38,617 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [73 Valid, 120 Invalid, 206 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [29 Valid, 177 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-24 20:39:38,625 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14732 states. [2024-10-24 20:39:40,771 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14732 to 14371. [2024-10-24 20:39:40,782 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14371 states, 9691 states have (on average 1.0522133938706015) internal successors, (10197), 9950 states have internal predecessors, (10197), 2881 states have call successors, (2881), 496 states have call predecessors, (2881), 1795 states have return successors, (9707), 3924 states have call predecessors, (9707), 2826 states have call successors, (9707) [2024-10-24 20:39:40,828 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14371 states to 14371 states and 22785 transitions. [2024-10-24 20:39:40,840 INFO L78 Accepts]: Start accepts. Automaton has 14371 states and 22785 transitions. Word has length 99 [2024-10-24 20:39:40,840 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-24 20:39:40,840 INFO L471 AbstractCegarLoop]: Abstraction has 14371 states and 22785 transitions. [2024-10-24 20:39:40,840 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 4.882352941176471) internal successors, (83), 17 states have internal predecessors, (83), 9 states have call successors, (14), 2 states have call predecessors, (14), 7 states have return successors, (17), 5 states have call predecessors, (17), 9 states have call successors, (17) [2024-10-24 20:39:40,840 INFO L276 IsEmpty]: Start isEmpty. Operand 14371 states and 22785 transitions. [2024-10-24 20:39:40,845 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2024-10-24 20:39:40,845 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 20:39:40,845 INFO L215 NwaCegarLoop]: trace histogram [10, 8, 7, 7, 7, 6, 6, 6, 4, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 20:39:40,858 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Ended with exit code 0 [2024-10-24 20:39:41,045 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23,20 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-24 20:39:41,046 INFO L396 AbstractCegarLoop]: === Iteration 25 === Targeting ackermannErr6ASSERT_VIOLATIONINTEGER_OVERFLOW === [ackermannErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ackermannErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ackermannErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 5 more)] === [2024-10-24 20:39:41,046 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 20:39:41,046 INFO L85 PathProgramCache]: Analyzing trace with hash 35205768, now seen corresponding path program 3 times [2024-10-24 20:39:41,046 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 20:39:41,046 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1560964080] [2024-10-24 20:39:41,046 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 20:39:41,046 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 20:39:41,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 20:39:41,168 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2024-10-24 20:39:41,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 20:39:41,205 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2024-10-24 20:39:41,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 20:39:41,229 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-10-24 20:39:41,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 20:39:41,261 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2024-10-24 20:39:41,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 20:39:41,289 INFO L134 CoverageAnalysis]: Checked inductivity of 227 backedges. 120 proven. 86 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2024-10-24 20:39:41,290 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 20:39:41,290 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1560964080] [2024-10-24 20:39:41,290 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1560964080] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-24 20:39:41,290 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1392004425] [2024-10-24 20:39:41,290 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-10-24 20:39:41,290 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-24 20:39:41,291 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-24 20:39:41,292 INFO L229 MonitoredProcess]: Starting monitored process 21 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-24 20:39:41,293 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2024-10-24 20:39:41,357 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 9 check-sat command(s) [2024-10-24 20:39:41,358 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-24 20:39:41,359 INFO L255 TraceCheckSpWp]: Trace formula consists of 204 conjuncts, 31 conjuncts are in the unsatisfiable core [2024-10-24 20:39:41,360 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-24 20:39:41,440 INFO L134 CoverageAnalysis]: Checked inductivity of 227 backedges. 113 proven. 41 refuted. 0 times theorem prover too weak. 73 trivial. 0 not checked. [2024-10-24 20:39:41,441 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-24 20:39:41,551 INFO L134 CoverageAnalysis]: Checked inductivity of 227 backedges. 142 proven. 13 refuted. 0 times theorem prover too weak. 72 trivial. 0 not checked. [2024-10-24 20:39:41,551 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1392004425] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-24 20:39:41,552 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-24 20:39:41,552 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 7, 8] total 29 [2024-10-24 20:39:41,552 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [552300447] [2024-10-24 20:39:41,552 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-24 20:39:41,552 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2024-10-24 20:39:41,552 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 20:39:41,553 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2024-10-24 20:39:41,553 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=89, Invalid=723, Unknown=0, NotChecked=0, Total=812 [2024-10-24 20:39:41,553 INFO L87 Difference]: Start difference. First operand 14371 states and 22785 transitions. Second operand has 29 states, 29 states have (on average 3.6206896551724137) internal successors, (105), 22 states have internal predecessors, (105), 11 states have call successors, (15), 7 states have call predecessors, (15), 7 states have return successors, (10), 9 states have call predecessors, (10), 4 states have call successors, (10) [2024-10-24 20:39:44,242 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 20:39:44,243 INFO L93 Difference]: Finished difference Result 25329 states and 43229 transitions. [2024-10-24 20:39:44,243 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2024-10-24 20:39:44,243 INFO L78 Accepts]: Start accepts. Automaton has has 29 states, 29 states have (on average 3.6206896551724137) internal successors, (105), 22 states have internal predecessors, (105), 11 states have call successors, (15), 7 states have call predecessors, (15), 7 states have return successors, (10), 9 states have call predecessors, (10), 4 states have call successors, (10) Word has length 86 [2024-10-24 20:39:44,243 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-24 20:39:44,302 INFO L225 Difference]: With dead ends: 25329 [2024-10-24 20:39:44,302 INFO L226 Difference]: Without dead ends: 13102 [2024-10-24 20:39:44,364 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 246 GetRequests, 177 SyntacticMatches, 0 SemanticMatches, 69 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 954 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=990, Invalid=3980, Unknown=0, NotChecked=0, Total=4970 [2024-10-24 20:39:44,365 INFO L432 NwaCegarLoop]: 19 mSDtfsCounter, 186 mSDsluCounter, 123 mSDsCounter, 0 mSdLazyCounter, 1022 mSolverCounterSat, 119 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 186 SdHoareTripleChecker+Valid, 142 SdHoareTripleChecker+Invalid, 1141 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 119 IncrementalHoareTripleChecker+Valid, 1022 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-10-24 20:39:44,365 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [186 Valid, 142 Invalid, 1141 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [119 Valid, 1022 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-10-24 20:39:44,371 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13102 states. [2024-10-24 20:39:45,964 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13102 to 11142. [2024-10-24 20:39:45,971 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11142 states, 7585 states have (on average 1.0460118655240607) internal successors, (7934), 7833 states have internal predecessors, (7934), 2175 states have call successors, (2175), 424 states have call predecessors, (2175), 1378 states have return successors, (5289), 2884 states have call predecessors, (5289), 2141 states have call successors, (5289) [2024-10-24 20:39:45,995 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11142 states to 11142 states and 15398 transitions. [2024-10-24 20:39:46,005 INFO L78 Accepts]: Start accepts. Automaton has 11142 states and 15398 transitions. Word has length 86 [2024-10-24 20:39:46,006 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-24 20:39:46,006 INFO L471 AbstractCegarLoop]: Abstraction has 11142 states and 15398 transitions. [2024-10-24 20:39:46,006 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 29 states, 29 states have (on average 3.6206896551724137) internal successors, (105), 22 states have internal predecessors, (105), 11 states have call successors, (15), 7 states have call predecessors, (15), 7 states have return successors, (10), 9 states have call predecessors, (10), 4 states have call successors, (10) [2024-10-24 20:39:46,006 INFO L276 IsEmpty]: Start isEmpty. Operand 11142 states and 15398 transitions. [2024-10-24 20:39:46,009 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2024-10-24 20:39:46,009 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 20:39:46,009 INFO L215 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] [2024-10-24 20:39:46,022 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Ended with exit code 0 [2024-10-24 20:39:46,214 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable24 [2024-10-24 20:39:46,214 INFO L396 AbstractCegarLoop]: === Iteration 26 === Targeting ackermannErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ackermannErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ackermannErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ackermannErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 5 more)] === [2024-10-24 20:39:46,214 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 20:39:46,214 INFO L85 PathProgramCache]: Analyzing trace with hash -989127467, now seen corresponding path program 4 times [2024-10-24 20:39:46,215 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 20:39:46,215 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [837277874] [2024-10-24 20:39:46,215 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 20:39:46,215 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 20:39:46,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 20:39:46,299 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2024-10-24 20:39:46,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 20:39:46,368 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2024-10-24 20:39:46,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 20:39:46,420 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2024-10-24 20:39:46,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 20:39:46,458 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2024-10-24 20:39:46,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 20:39:46,481 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-10-24 20:39:46,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 20:39:46,509 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2024-10-24 20:39:46,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 20:39:46,539 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2024-10-24 20:39:46,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 20:39:46,550 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2024-10-24 20:39:46,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 20:39:46,559 INFO L134 CoverageAnalysis]: Checked inductivity of 221 backedges. 51 proven. 69 refuted. 0 times theorem prover too weak. 101 trivial. 0 not checked. [2024-10-24 20:39:46,560 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 20:39:46,560 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [837277874] [2024-10-24 20:39:46,560 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [837277874] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-24 20:39:46,560 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1957773649] [2024-10-24 20:39:46,560 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-10-24 20:39:46,560 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-24 20:39:46,560 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-24 20:39:46,562 INFO L229 MonitoredProcess]: Starting monitored process 22 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-24 20:39:46,563 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process [2024-10-24 20:39:46,631 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-10-24 20:39:46,631 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-24 20:39:46,632 INFO L255 TraceCheckSpWp]: Trace formula consists of 234 conjuncts, 27 conjuncts are in the unsatisfiable core [2024-10-24 20:39:46,633 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-24 20:39:46,688 INFO L134 CoverageAnalysis]: Checked inductivity of 221 backedges. 34 proven. 71 refuted. 0 times theorem prover too weak. 116 trivial. 0 not checked. [2024-10-24 20:39:46,688 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-24 20:39:47,890 INFO L134 CoverageAnalysis]: Checked inductivity of 221 backedges. 42 proven. 93 refuted. 0 times theorem prover too weak. 86 trivial. 0 not checked. [2024-10-24 20:39:47,890 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1957773649] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-24 20:39:47,890 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-24 20:39:47,891 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 17, 23] total 42 [2024-10-24 20:39:47,891 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1594233670] [2024-10-24 20:39:47,891 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-24 20:39:47,891 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 43 states [2024-10-24 20:39:47,891 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 20:39:47,892 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 43 interpolants. [2024-10-24 20:39:47,892 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=207, Invalid=1599, Unknown=0, NotChecked=0, Total=1806 [2024-10-24 20:39:47,892 INFO L87 Difference]: Start difference. First operand 11142 states and 15398 transitions. Second operand has 43 states, 42 states have (on average 1.880952380952381) internal successors, (79), 33 states have internal predecessors, (79), 9 states have call successors, (11), 3 states have call predecessors, (11), 14 states have return successors, (17), 16 states have call predecessors, (17), 7 states have call successors, (17) [2024-10-24 20:39:54,318 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 20:39:54,319 INFO L93 Difference]: Finished difference Result 34680 states and 55091 transitions. [2024-10-24 20:39:54,319 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 143 states. [2024-10-24 20:39:54,319 INFO L78 Accepts]: Start accepts. Automaton has has 43 states, 42 states have (on average 1.880952380952381) internal successors, (79), 33 states have internal predecessors, (79), 9 states have call successors, (11), 3 states have call predecessors, (11), 14 states have return successors, (17), 16 states have call predecessors, (17), 7 states have call successors, (17) Word has length 90 [2024-10-24 20:39:54,319 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-24 20:39:54,628 INFO L225 Difference]: With dead ends: 34680 [2024-10-24 20:39:54,628 INFO L226 Difference]: Without dead ends: 33578 [2024-10-24 20:39:54,650 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 354 GetRequests, 175 SyntacticMatches, 0 SemanticMatches, 179 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12259 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=5342, Invalid=27238, Unknown=0, NotChecked=0, Total=32580 [2024-10-24 20:39:54,650 INFO L432 NwaCegarLoop]: 21 mSDtfsCounter, 336 mSDsluCounter, 236 mSDsCounter, 0 mSdLazyCounter, 614 mSolverCounterSat, 610 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 349 SdHoareTripleChecker+Valid, 257 SdHoareTripleChecker+Invalid, 1224 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 610 IncrementalHoareTripleChecker+Valid, 614 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-10-24 20:39:54,651 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [349 Valid, 257 Invalid, 1224 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [610 Valid, 614 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-10-24 20:39:54,662 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33578 states. [2024-10-24 20:39:58,086 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33578 to 21092. [2024-10-24 20:39:58,102 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21092 states, 13677 states have (on average 1.0274182934854135) internal successors, (14052), 13908 states have internal predecessors, (14052), 4366 states have call successors, (4366), 532 states have call predecessors, (4366), 3045 states have return successors, (14390), 6651 states have call predecessors, (14390), 4312 states have call successors, (14390) [2024-10-24 20:39:58,166 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21092 states to 21092 states and 32808 transitions. [2024-10-24 20:39:58,183 INFO L78 Accepts]: Start accepts. Automaton has 21092 states and 32808 transitions. Word has length 90 [2024-10-24 20:39:58,184 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-24 20:39:58,184 INFO L471 AbstractCegarLoop]: Abstraction has 21092 states and 32808 transitions. [2024-10-24 20:39:58,184 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 43 states, 42 states have (on average 1.880952380952381) internal successors, (79), 33 states have internal predecessors, (79), 9 states have call successors, (11), 3 states have call predecessors, (11), 14 states have return successors, (17), 16 states have call predecessors, (17), 7 states have call successors, (17) [2024-10-24 20:39:58,184 INFO L276 IsEmpty]: Start isEmpty. Operand 21092 states and 32808 transitions. [2024-10-24 20:39:58,189 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2024-10-24 20:39:58,189 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 20:39:58,189 INFO L215 NwaCegarLoop]: trace histogram [15, 15, 15, 15, 15, 14, 14, 14, 1, 1, 1, 1, 1] [2024-10-24 20:39:58,201 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Ended with exit code 0 [2024-10-24 20:39:58,393 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable25 [2024-10-24 20:39:58,394 INFO L396 AbstractCegarLoop]: === Iteration 27 === Targeting ackermannErr6ASSERT_VIOLATIONINTEGER_OVERFLOW === [ackermannErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ackermannErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ackermannErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 5 more)] === [2024-10-24 20:39:58,394 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 20:39:58,394 INFO L85 PathProgramCache]: Analyzing trace with hash -1526846766, now seen corresponding path program 3 times [2024-10-24 20:39:58,394 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 20:39:58,394 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1664297711] [2024-10-24 20:39:58,394 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 20:39:58,394 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 20:39:58,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 20:39:58,829 INFO L134 CoverageAnalysis]: Checked inductivity of 812 backedges. 0 proven. 812 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 20:39:58,829 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 20:39:58,829 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1664297711] [2024-10-24 20:39:58,829 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1664297711] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-24 20:39:58,829 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [233901443] [2024-10-24 20:39:58,829 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-10-24 20:39:58,829 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-24 20:39:58,829 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-24 20:39:58,830 INFO L229 MonitoredProcess]: Starting monitored process 23 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-24 20:39:58,831 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Waiting until timeout for monitored process [2024-10-24 20:39:58,912 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 15 check-sat command(s) [2024-10-24 20:39:58,912 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-24 20:39:58,913 INFO L255 TraceCheckSpWp]: Trace formula consists of 268 conjuncts, 32 conjuncts are in the unsatisfiable core [2024-10-24 20:39:58,915 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-24 20:39:59,004 INFO L134 CoverageAnalysis]: Checked inductivity of 812 backedges. 0 proven. 812 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 20:39:59,004 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-24 20:39:59,673 INFO L134 CoverageAnalysis]: Checked inductivity of 812 backedges. 0 proven. 812 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 20:39:59,673 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [233901443] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-24 20:39:59,673 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-24 20:39:59,673 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [32, 32, 32] total 63 [2024-10-24 20:39:59,673 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2088177373] [2024-10-24 20:39:59,673 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-24 20:39:59,674 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 64 states [2024-10-24 20:39:59,674 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 20:39:59,674 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 64 interpolants. [2024-10-24 20:39:59,675 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=996, Invalid=3036, Unknown=0, NotChecked=0, Total=4032 [2024-10-24 20:39:59,675 INFO L87 Difference]: Start difference. First operand 21092 states and 32808 transitions. Second operand has 64 states, 61 states have (on average 3.4754098360655736) internal successors, (212), 34 states have internal predecessors, (212), 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) [2024-10-24 20:40:06,088 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 20:40:06,088 INFO L93 Difference]: Finished difference Result 36181 states and 56296 transitions. [2024-10-24 20:40:06,088 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 64 states. [2024-10-24 20:40:06,088 INFO L78 Accepts]: Start accepts. Automaton has has 64 states, 61 states have (on average 3.4754098360655736) internal successors, (212), 34 states have internal predecessors, (212), 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 122 [2024-10-24 20:40:06,089 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-24 20:40:06,206 INFO L225 Difference]: With dead ends: 36181 [2024-10-24 20:40:06,207 INFO L226 Difference]: Without dead ends: 36180 [2024-10-24 20:40:06,220 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 304 GetRequests, 212 SyntacticMatches, 0 SemanticMatches, 92 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1740 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=2421, Invalid=6321, Unknown=0, NotChecked=0, Total=8742 [2024-10-24 20:40:06,220 INFO L432 NwaCegarLoop]: 22 mSDtfsCounter, 1296 mSDsluCounter, 769 mSDsCounter, 0 mSdLazyCounter, 869 mSolverCounterSat, 234 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1327 SdHoareTripleChecker+Valid, 791 SdHoareTripleChecker+Invalid, 1103 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 234 IncrementalHoareTripleChecker+Valid, 869 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-10-24 20:40:06,221 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1327 Valid, 791 Invalid, 1103 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [234 Valid, 869 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-10-24 20:40:06,237 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36180 states. [2024-10-24 20:40:11,942 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36180 to 36180. [2024-10-24 20:40:11,974 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 36180 states, 23421 states have (on average 1.0283079287818624) internal successors, (24084), 23940 states have internal predecessors, (24084), 7326 states have call successors, (7326), 820 states have call predecessors, (7326), 5429 states have return successors, (24870), 11419 states have call predecessors, (24870), 7272 states have call successors, (24870) [2024-10-24 20:40:12,092 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36180 states to 36180 states and 56280 transitions. [2024-10-24 20:40:12,117 INFO L78 Accepts]: Start accepts. Automaton has 36180 states and 56280 transitions. Word has length 122 [2024-10-24 20:40:12,117 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-24 20:40:12,117 INFO L471 AbstractCegarLoop]: Abstraction has 36180 states and 56280 transitions. [2024-10-24 20:40:12,117 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 64 states, 61 states have (on average 3.4754098360655736) internal successors, (212), 34 states have internal predecessors, (212), 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) [2024-10-24 20:40:12,117 INFO L276 IsEmpty]: Start isEmpty. Operand 36180 states and 56280 transitions. [2024-10-24 20:40:12,125 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 141 [2024-10-24 20:40:12,125 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 20:40:12,125 INFO L215 NwaCegarLoop]: trace histogram [20, 20, 10, 10, 10, 10, 10, 9, 9, 9, 9, 9, 1, 1, 1, 1, 1] [2024-10-24 20:40:12,137 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Forceful destruction successful, exit code 0 [2024-10-24 20:40:12,325 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 23 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable26 [2024-10-24 20:40:12,326 INFO L396 AbstractCegarLoop]: === Iteration 28 === Targeting ackermannErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ackermannErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ackermannErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ackermannErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 5 more)] === [2024-10-24 20:40:12,326 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 20:40:12,326 INFO L85 PathProgramCache]: Analyzing trace with hash 878704996, now seen corresponding path program 2 times [2024-10-24 20:40:12,326 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 20:40:12,326 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1605518286] [2024-10-24 20:40:12,326 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 20:40:12,326 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 20:40:12,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 20:40:12,698 INFO L134 CoverageAnalysis]: Checked inductivity of 894 backedges. 0 proven. 867 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2024-10-24 20:40:12,699 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 20:40:12,699 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1605518286] [2024-10-24 20:40:12,699 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1605518286] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-24 20:40:12,699 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1270891766] [2024-10-24 20:40:12,699 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-10-24 20:40:12,700 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-24 20:40:12,700 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-24 20:40:12,701 INFO L229 MonitoredProcess]: Starting monitored process 24 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-24 20:40:12,702 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Waiting until timeout for monitored process [2024-10-24 20:40:12,794 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-10-24 20:40:12,794 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-24 20:40:12,795 INFO L255 TraceCheckSpWp]: Trace formula consists of 336 conjuncts, 42 conjuncts are in the unsatisfiable core [2024-10-24 20:40:12,797 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-24 20:40:12,918 INFO L134 CoverageAnalysis]: Checked inductivity of 894 backedges. 0 proven. 867 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2024-10-24 20:40:12,919 INFO L311 TraceCheckSpWp]: Computing backward predicates...