./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/Ackermann03.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version fca748b1 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/Ackermann03.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 c244f72db2906c596b7f122d769fc1464836d7d05d9227ee4269773d59ed10bd --- Real Ultimate output --- This is Ultimate 0.2.5-wip.dd.update-z3-fca748b-m [2024-11-20 19:02:44,389 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-20 19:02:44,440 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf [2024-11-20 19:02:44,445 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-20 19:02:44,446 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-20 19:02:44,470 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-20 19:02:44,472 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-20 19:02:44,472 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-20 19:02:44,473 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-20 19:02:44,474 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-20 19:02:44,474 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-20 19:02:44,475 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-20 19:02:44,475 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-20 19:02:44,477 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-20 19:02:44,478 INFO L153 SettingsManager]: * Use SBE=true [2024-11-20 19:02:44,478 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-20 19:02:44,478 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-20 19:02:44,478 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-20 19:02:44,478 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-20 19:02:44,478 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-20 19:02:44,479 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-20 19:02:44,480 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-20 19:02:44,481 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-20 19:02:44,481 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-20 19:02:44,481 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-20 19:02:44,481 INFO L153 SettingsManager]: * Check absence of signed integer overflows=ASSERTandASSUME [2024-11-20 19:02:44,481 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-11-20 19:02:44,482 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-20 19:02:44,482 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-20 19:02:44,482 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-20 19:02:44,482 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-20 19:02:44,482 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-20 19:02:44,482 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-20 19:02:44,483 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-20 19:02:44,483 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-20 19:02:44,483 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-20 19:02:44,484 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-20 19:02:44,484 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-20 19:02:44,484 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-20 19:02:44,484 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-20 19:02:44,485 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-20 19:02:44,485 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-20 19:02:44,485 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-20 19:02:44,485 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-20 19:02:44,486 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> c244f72db2906c596b7f122d769fc1464836d7d05d9227ee4269773d59ed10bd [2024-11-20 19:02:44,673 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-20 19:02:44,703 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-20 19:02:44,705 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-20 19:02:44,705 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-20 19:02:44,706 INFO L274 PluginConnector]: CDTParser initialized [2024-11-20 19:02:44,707 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/recursive/Ackermann03.c [2024-11-20 19:02:46,102 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-20 19:02:46,227 INFO L384 CDTParser]: Found 1 translation units. [2024-11-20 19:02:46,227 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/recursive/Ackermann03.c [2024-11-20 19:02:46,232 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/32324e500/b30c4140499447e9b7185aac9d386362/FLAG478df9679 [2024-11-20 19:02:46,242 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/32324e500/b30c4140499447e9b7185aac9d386362 [2024-11-20 19:02:46,243 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-20 19:02:46,244 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-20 19:02:46,245 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-20 19:02:46,245 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-20 19:02:46,249 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-20 19:02:46,250 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 07:02:46" (1/1) ... [2024-11-20 19:02:46,250 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@11b2560e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 07:02:46, skipping insertion in model container [2024-11-20 19:02:46,250 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 07:02:46" (1/1) ... [2024-11-20 19:02:46,265 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-20 19:02:46,434 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-20 19:02:46,450 INFO L200 MainTranslator]: Completed pre-run [2024-11-20 19:02:46,462 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-20 19:02:46,474 INFO L204 MainTranslator]: Completed translation [2024-11-20 19:02:46,474 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 07:02:46 WrapperNode [2024-11-20 19:02:46,474 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-20 19:02:46,475 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-20 19:02:46,475 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-20 19:02:46,475 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-20 19:02:46,480 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 07:02:46" (1/1) ... [2024-11-20 19:02:46,484 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 07:02:46" (1/1) ... [2024-11-20 19:02:46,494 INFO L138 Inliner]: procedures = 13, calls = 12, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 34 [2024-11-20 19:02:46,494 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-20 19:02:46,495 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-20 19:02:46,495 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-20 19:02:46,495 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-20 19:02:46,501 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 07:02:46" (1/1) ... [2024-11-20 19:02:46,501 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 07:02:46" (1/1) ... [2024-11-20 19:02:46,502 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 07:02:46" (1/1) ... [2024-11-20 19:02:46,509 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]. [2024-11-20 19:02:46,509 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 07:02:46" (1/1) ... [2024-11-20 19:02:46,509 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 07:02:46" (1/1) ... [2024-11-20 19:02:46,511 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 07:02:46" (1/1) ... [2024-11-20 19:02:46,512 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 07:02:46" (1/1) ... [2024-11-20 19:02:46,513 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 07:02:46" (1/1) ... [2024-11-20 19:02:46,513 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 07:02:46" (1/1) ... [2024-11-20 19:02:46,514 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-20 19:02:46,515 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-20 19:02:46,515 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-20 19:02:46,515 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-20 19:02:46,515 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 07:02:46" (1/1) ... [2024-11-20 19:02:46,519 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-20 19:02:46,529 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-20 19:02:46,545 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) [2024-11-20 19:02:46,546 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 [2024-11-20 19:02:46,581 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-20 19:02:46,581 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-20 19:02:46,581 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-20 19:02:46,581 INFO L130 BoogieDeclarations]: Found specification of procedure ackermann [2024-11-20 19:02:46,581 INFO L138 BoogieDeclarations]: Found implementation of procedure ackermann [2024-11-20 19:02:46,581 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-20 19:02:46,624 INFO L238 CfgBuilder]: Building ICFG [2024-11-20 19:02:46,626 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-20 19:02:46,737 INFO L? ?]: Removed 21 outVars from TransFormulas that were not future-live. [2024-11-20 19:02:46,737 INFO L287 CfgBuilder]: Performing block encoding [2024-11-20 19:02:46,748 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-20 19:02:46,749 INFO L316 CfgBuilder]: Removed 0 assume(true) statements. [2024-11-20 19:02:46,749 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 07:02:46 BoogieIcfgContainer [2024-11-20 19:02:46,749 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-20 19:02:46,753 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-20 19:02:46,753 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-20 19:02:46,756 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-20 19:02:46,756 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.11 07:02:46" (1/3) ... [2024-11-20 19:02:46,757 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2ee4dbd1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 07:02:46, skipping insertion in model container [2024-11-20 19:02:46,757 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 07:02:46" (2/3) ... [2024-11-20 19:02:46,757 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2ee4dbd1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 07:02:46, skipping insertion in model container [2024-11-20 19:02:46,757 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 07:02:46" (3/3) ... [2024-11-20 19:02:46,758 INFO L112 eAbstractionObserver]: Analyzing ICFG Ackermann03.c [2024-11-20 19:02:46,776 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-20 19:02:46,776 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 8 error locations. [2024-11-20 19:02:46,815 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-20 19:02:46,820 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;@25dc050e, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-20 19:02:46,820 INFO L334 AbstractCegarLoop]: Starting to check reachability of 8 error locations. [2024-11-20 19:02:46,823 INFO L276 IsEmpty]: Start isEmpty. Operand has 39 states, 25 states have (on average 1.52) internal successors, (38), 33 states have internal predecessors, (38), 4 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2024-11-20 19:02:46,827 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2024-11-20 19:02:46,828 INFO L207 NwaCegarLoop]: Found error trace [2024-11-20 19:02:46,828 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2024-11-20 19:02:46,828 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ackermannErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ackermannErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ackermannErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ackermannErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 5 more)] === [2024-11-20 19:02:46,832 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 19:02:46,832 INFO L85 PathProgramCache]: Analyzing trace with hash 180823785, now seen corresponding path program 1 times [2024-11-20 19:02:46,839 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 19:02:46,839 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [289501436] [2024-11-20 19:02:46,839 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 19:02:46,840 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 19:02:46,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 19:02:47,014 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 19:02:47,014 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 19:02:47,015 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [289501436] [2024-11-20 19:02:47,015 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [289501436] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-20 19:02:47,015 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-20 19:02:47,015 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-20 19:02:47,017 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1468426915] [2024-11-20 19:02:47,017 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-20 19:02:47,020 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-20 19:02:47,020 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 19:02:47,034 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-20 19:02:47,035 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-20 19:02:47,036 INFO L87 Difference]: Start difference. First operand has 39 states, 25 states have (on average 1.52) internal successors, (38), 33 states have internal predecessors, (38), 4 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) Second operand has 5 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 4 states have internal predecessors, (7), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-20 19:02:47,136 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-20 19:02:47,136 INFO L93 Difference]: Finished difference Result 71 states and 83 transitions. [2024-11-20 19:02:47,137 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-20 19:02:47,138 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 [2024-11-20 19:02:47,138 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-20 19:02:47,144 INFO L225 Difference]: With dead ends: 71 [2024-11-20 19:02:47,144 INFO L226 Difference]: Without dead ends: 59 [2024-11-20 19:02:47,146 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 [2024-11-20 19:02:47,148 INFO L432 NwaCegarLoop]: 33 mSDtfsCounter, 36 mSDsluCounter, 86 mSDsCounter, 0 mSdLazyCounter, 70 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 38 SdHoareTripleChecker+Valid, 119 SdHoareTripleChecker+Invalid, 77 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 70 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-20 19:02:47,149 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [38 Valid, 119 Invalid, 77 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 70 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-20 19:02:47,160 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59 states. [2024-11-20 19:02:47,174 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59 to 51. [2024-11-20 19:02:47,175 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 51 states, 34 states have (on average 1.5294117647058822) internal successors, (52), 42 states have internal predecessors, (52), 7 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2024-11-20 19:02:47,177 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 65 transitions. [2024-11-20 19:02:47,178 INFO L78 Accepts]: Start accepts. Automaton has 51 states and 65 transitions. Word has length 8 [2024-11-20 19:02:47,178 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-20 19:02:47,178 INFO L471 AbstractCegarLoop]: Abstraction has 51 states and 65 transitions. [2024-11-20 19:02:47,178 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) [2024-11-20 19:02:47,178 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states and 65 transitions. [2024-11-20 19:02:47,179 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2024-11-20 19:02:47,179 INFO L207 NwaCegarLoop]: Found error trace [2024-11-20 19:02:47,179 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-20 19:02:47,179 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-20 19:02:47,179 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ackermannErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ackermannErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ackermannErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ackermannErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 5 more)] === [2024-11-20 19:02:47,180 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 19:02:47,180 INFO L85 PathProgramCache]: Analyzing trace with hash 1310575100, now seen corresponding path program 1 times [2024-11-20 19:02:47,180 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 19:02:47,180 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1325345023] [2024-11-20 19:02:47,180 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 19:02:47,181 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 19:02:47,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 19:02:47,233 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 19:02:47,234 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 19:02:47,234 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1325345023] [2024-11-20 19:02:47,234 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1325345023] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-20 19:02:47,234 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-20 19:02:47,234 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-20 19:02:47,235 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1088260397] [2024-11-20 19:02:47,235 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-20 19:02:47,236 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-20 19:02:47,236 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 19:02:47,237 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-20 19:02:47,237 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-20 19:02:47,237 INFO L87 Difference]: Start difference. First operand 51 states and 65 transitions. Second operand has 5 states, 4 states have (on average 2.0) internal successors, (8), 4 states have internal predecessors, (8), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-20 19:02:47,309 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-20 19:02:47,310 INFO L93 Difference]: Finished difference Result 101 states and 129 transitions. [2024-11-20 19:02:47,310 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-20 19:02:47,310 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 [2024-11-20 19:02:47,310 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-20 19:02:47,313 INFO L225 Difference]: With dead ends: 101 [2024-11-20 19:02:47,313 INFO L226 Difference]: Without dead ends: 93 [2024-11-20 19:02:47,313 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 [2024-11-20 19:02:47,314 INFO L432 NwaCegarLoop]: 29 mSDtfsCounter, 36 mSDsluCounter, 76 mSDsCounter, 0 mSdLazyCounter, 44 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 36 SdHoareTripleChecker+Valid, 105 SdHoareTripleChecker+Invalid, 52 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 44 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-20 19:02:47,315 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [36 Valid, 105 Invalid, 52 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 44 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-20 19:02:47,315 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 93 states. [2024-11-20 19:02:47,324 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 93 to 85. [2024-11-20 19:02:47,324 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 85 states, 61 states have (on average 1.5081967213114753) internal successors, (92), 70 states have internal predecessors, (92), 13 states have call successors, (13), 4 states have call predecessors, (13), 3 states have return successors, (10), 10 states have call predecessors, (10), 10 states have call successors, (10) [2024-11-20 19:02:47,326 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 85 states to 85 states and 115 transitions. [2024-11-20 19:02:47,326 INFO L78 Accepts]: Start accepts. Automaton has 85 states and 115 transitions. Word has length 9 [2024-11-20 19:02:47,326 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-20 19:02:47,326 INFO L471 AbstractCegarLoop]: Abstraction has 85 states and 115 transitions. [2024-11-20 19:02:47,327 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) [2024-11-20 19:02:47,327 INFO L276 IsEmpty]: Start isEmpty. Operand 85 states and 115 transitions. [2024-11-20 19:02:47,327 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2024-11-20 19:02:47,327 INFO L207 NwaCegarLoop]: Found error trace [2024-11-20 19:02:47,327 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-20 19:02:47,328 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-20 19:02:47,328 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ackermannErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ackermannErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ackermannErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ackermannErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 5 more)] === [2024-11-20 19:02:47,328 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 19:02:47,328 INFO L85 PathProgramCache]: Analyzing trace with hash 1310570103, now seen corresponding path program 1 times [2024-11-20 19:02:47,329 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 19:02:47,329 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [48445363] [2024-11-20 19:02:47,329 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 19:02:47,329 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 19:02:47,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 19:02:47,376 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 19:02:47,377 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 19:02:47,377 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [48445363] [2024-11-20 19:02:47,377 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [48445363] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-20 19:02:47,377 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-20 19:02:47,377 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-20 19:02:47,378 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [734752139] [2024-11-20 19:02:47,378 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-20 19:02:47,378 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-20 19:02:47,378 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 19:02:47,379 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-20 19:02:47,379 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-20 19:02:47,379 INFO L87 Difference]: Start difference. First operand 85 states and 115 transitions. Second operand has 5 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 4 states have internal predecessors, (8), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-20 19:02:47,441 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-20 19:02:47,441 INFO L93 Difference]: Finished difference Result 118 states and 157 transitions. [2024-11-20 19:02:47,441 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-20 19:02:47,442 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 4 states have internal predecessors, (8), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 9 [2024-11-20 19:02:47,442 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-20 19:02:47,443 INFO L225 Difference]: With dead ends: 118 [2024-11-20 19:02:47,444 INFO L226 Difference]: Without dead ends: 114 [2024-11-20 19:02:47,444 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 [2024-11-20 19:02:47,445 INFO L432 NwaCegarLoop]: 26 mSDtfsCounter, 34 mSDsluCounter, 71 mSDsCounter, 0 mSdLazyCounter, 52 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 35 SdHoareTripleChecker+Valid, 97 SdHoareTripleChecker+Invalid, 60 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 52 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-20 19:02:47,446 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [35 Valid, 97 Invalid, 60 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 52 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-20 19:02:47,446 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 114 states. [2024-11-20 19:02:47,458 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 114 to 102. [2024-11-20 19:02:47,458 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 102 states, 74 states have (on average 1.445945945945946) internal successors, (107), 83 states have internal predecessors, (107), 16 states have call successors, (16), 5 states have call predecessors, (16), 4 states have return successors, (13), 13 states have call predecessors, (13), 13 states have call successors, (13) [2024-11-20 19:02:47,459 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 102 states to 102 states and 136 transitions. [2024-11-20 19:02:47,460 INFO L78 Accepts]: Start accepts. Automaton has 102 states and 136 transitions. Word has length 9 [2024-11-20 19:02:47,460 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-20 19:02:47,460 INFO L471 AbstractCegarLoop]: Abstraction has 102 states and 136 transitions. [2024-11-20 19:02:47,460 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 4 states have internal predecessors, (8), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-20 19:02:47,460 INFO L276 IsEmpty]: Start isEmpty. Operand 102 states and 136 transitions. [2024-11-20 19:02:47,461 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2024-11-20 19:02:47,461 INFO L207 NwaCegarLoop]: Found error trace [2024-11-20 19:02:47,461 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-20 19:02:47,461 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-20 19:02:47,461 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ackermannErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ackermannErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ackermannErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ackermannErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 5 more)] === [2024-11-20 19:02:47,462 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 19:02:47,462 INFO L85 PathProgramCache]: Analyzing trace with hash 1973122508, now seen corresponding path program 1 times [2024-11-20 19:02:47,462 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 19:02:47,462 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1853157412] [2024-11-20 19:02:47,462 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 19:02:47,462 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 19:02:47,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 19:02:47,507 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 19:02:47,507 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 19:02:47,507 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1853157412] [2024-11-20 19:02:47,508 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1853157412] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-20 19:02:47,508 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-20 19:02:47,508 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-20 19:02:47,508 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1307767648] [2024-11-20 19:02:47,509 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-20 19:02:47,509 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-20 19:02:47,509 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 19:02:47,509 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-20 19:02:47,510 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-20 19:02:47,510 INFO L87 Difference]: Start difference. First operand 102 states and 136 transitions. Second operand has 5 states, 4 states have (on average 2.25) internal successors, (9), 4 states have internal predecessors, (9), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-20 19:02:47,578 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-20 19:02:47,578 INFO L93 Difference]: Finished difference Result 110 states and 153 transitions. [2024-11-20 19:02:47,579 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-20 19:02:47,579 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 2.25) internal successors, (9), 4 states have internal predecessors, (9), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 10 [2024-11-20 19:02:47,579 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-20 19:02:47,580 INFO L225 Difference]: With dead ends: 110 [2024-11-20 19:02:47,582 INFO L226 Difference]: Without dead ends: 108 [2024-11-20 19:02:47,583 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 [2024-11-20 19:02:47,583 INFO L432 NwaCegarLoop]: 23 mSDtfsCounter, 35 mSDsluCounter, 31 mSDsCounter, 0 mSdLazyCounter, 38 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 35 SdHoareTripleChecker+Valid, 54 SdHoareTripleChecker+Invalid, 50 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 38 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-20 19:02:47,584 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [35 Valid, 54 Invalid, 50 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 38 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-20 19:02:47,586 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 108 states. [2024-11-20 19:02:47,599 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 108 to 100. [2024-11-20 19:02:47,600 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 100 states, 74 states have (on average 1.3108108108108107) internal successors, (97), 81 states have internal predecessors, (97), 16 states have call successors, (16), 5 states have call predecessors, (16), 4 states have return successors, (13), 13 states have call predecessors, (13), 13 states have call successors, (13) [2024-11-20 19:02:47,601 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 100 states to 100 states and 126 transitions. [2024-11-20 19:02:47,601 INFO L78 Accepts]: Start accepts. Automaton has 100 states and 126 transitions. Word has length 10 [2024-11-20 19:02:47,601 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-20 19:02:47,601 INFO L471 AbstractCegarLoop]: Abstraction has 100 states and 126 transitions. [2024-11-20 19:02:47,601 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 2.25) internal successors, (9), 4 states have internal predecessors, (9), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-20 19:02:47,602 INFO L276 IsEmpty]: Start isEmpty. Operand 100 states and 126 transitions. [2024-11-20 19:02:47,602 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2024-11-20 19:02:47,602 INFO L207 NwaCegarLoop]: Found error trace [2024-11-20 19:02:47,602 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-20 19:02:47,602 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-20 19:02:47,602 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ackermannErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ackermannErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ackermannErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ackermannErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 5 more)] === [2024-11-20 19:02:47,603 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 19:02:47,603 INFO L85 PathProgramCache]: Analyzing trace with hash -612398535, now seen corresponding path program 1 times [2024-11-20 19:02:47,603 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 19:02:47,603 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1787801760] [2024-11-20 19:02:47,603 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 19:02:47,603 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 19:02:47,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 19:02:47,649 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 19:02:47,649 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 19:02:47,649 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1787801760] [2024-11-20 19:02:47,650 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1787801760] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-20 19:02:47,651 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-20 19:02:47,651 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-20 19:02:47,651 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1721926575] [2024-11-20 19:02:47,651 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-20 19:02:47,651 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-20 19:02:47,651 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 19:02:47,652 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-20 19:02:47,653 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-20 19:02:47,653 INFO L87 Difference]: Start difference. First operand 100 states and 126 transitions. Second operand has 4 states, 4 states have (on average 3.25) internal successors, (13), 3 states have internal predecessors, (13), 1 states have call successors, (2), 2 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-20 19:02:47,727 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-20 19:02:47,728 INFO L93 Difference]: Finished difference Result 170 states and 225 transitions. [2024-11-20 19:02:47,728 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-20 19:02:47,728 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 3.25) internal successors, (13), 3 states have internal predecessors, (13), 1 states have call successors, (2), 2 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 15 [2024-11-20 19:02:47,728 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-20 19:02:47,729 INFO L225 Difference]: With dead ends: 170 [2024-11-20 19:02:47,729 INFO L226 Difference]: Without dead ends: 99 [2024-11-20 19:02:47,730 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 [2024-11-20 19:02:47,731 INFO L432 NwaCegarLoop]: 39 mSDtfsCounter, 25 mSDsluCounter, 50 mSDsCounter, 0 mSdLazyCounter, 31 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 25 SdHoareTripleChecker+Valid, 89 SdHoareTripleChecker+Invalid, 35 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 31 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-20 19:02:47,735 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [25 Valid, 89 Invalid, 35 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 31 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-20 19:02:47,757 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 99 states. [2024-11-20 19:02:47,771 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 99 to 96. [2024-11-20 19:02:47,775 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 96 states, 71 states have (on average 1.295774647887324) internal successors, (92), 78 states have internal predecessors, (92), 15 states have call successors, (15), 5 states have call predecessors, (15), 4 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) [2024-11-20 19:02:47,776 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 96 states to 96 states and 119 transitions. [2024-11-20 19:02:47,776 INFO L78 Accepts]: Start accepts. Automaton has 96 states and 119 transitions. Word has length 15 [2024-11-20 19:02:47,776 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-20 19:02:47,776 INFO L471 AbstractCegarLoop]: Abstraction has 96 states and 119 transitions. [2024-11-20 19:02:47,777 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 3.25) internal successors, (13), 3 states have internal predecessors, (13), 1 states have call successors, (2), 2 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-20 19:02:47,777 INFO L276 IsEmpty]: Start isEmpty. Operand 96 states and 119 transitions. [2024-11-20 19:02:47,777 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2024-11-20 19:02:47,777 INFO L207 NwaCegarLoop]: Found error trace [2024-11-20 19:02:47,777 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-20 19:02:47,777 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-20 19:02:47,778 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ackermannErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ackermannErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ackermannErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ackermannErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 5 more)] === [2024-11-20 19:02:47,778 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 19:02:47,778 INFO L85 PathProgramCache]: Analyzing trace with hash -612398311, now seen corresponding path program 1 times [2024-11-20 19:02:47,778 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 19:02:47,778 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [263578938] [2024-11-20 19:02:47,779 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 19:02:47,782 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 19:02:47,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 19:02:47,887 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 19:02:47,888 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 19:02:47,888 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [263578938] [2024-11-20 19:02:47,888 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [263578938] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-20 19:02:47,888 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1762148626] [2024-11-20 19:02:47,888 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 19:02:47,889 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-20 19:02:47,889 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-20 19:02:47,893 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) [2024-11-20 19:02:47,894 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-20 19:02:47,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 19:02:47,940 INFO L255 TraceCheckSpWp]: Trace formula consists of 57 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-20 19:02:47,943 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-20 19:02:47,989 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 19:02:47,989 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-20 19:02:48,056 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 19:02:48,058 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1762148626] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-20 19:02:48,058 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-20 19:02:48,059 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 11 [2024-11-20 19:02:48,059 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [878434644] [2024-11-20 19:02:48,059 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-20 19:02:48,059 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-11-20 19:02:48,059 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 19:02:48,060 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-11-20 19:02:48,061 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=98, Unknown=0, NotChecked=0, Total=132 [2024-11-20 19:02:48,062 INFO L87 Difference]: Start difference. First operand 96 states and 119 transitions. Second operand has 12 states, 11 states have (on average 2.1818181818181817) internal successors, (24), 8 states have internal predecessors, (24), 4 states have call successors, (4), 4 states have call predecessors, (4), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-20 19:02:48,282 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-20 19:02:48,282 INFO L93 Difference]: Finished difference Result 276 states and 359 transitions. [2024-11-20 19:02:48,283 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-11-20 19:02:48,283 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 2.1818181818181817) internal successors, (24), 8 states have internal predecessors, (24), 4 states have call successors, (4), 4 states have call predecessors, (4), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 15 [2024-11-20 19:02:48,283 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-20 19:02:48,285 INFO L225 Difference]: With dead ends: 276 [2024-11-20 19:02:48,285 INFO L226 Difference]: Without dead ends: 274 [2024-11-20 19:02:48,285 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=68, Invalid=172, Unknown=0, NotChecked=0, Total=240 [2024-11-20 19:02:48,286 INFO L432 NwaCegarLoop]: 31 mSDtfsCounter, 215 mSDsluCounter, 175 mSDsCounter, 0 mSdLazyCounter, 166 mSolverCounterSat, 56 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 218 SdHoareTripleChecker+Valid, 206 SdHoareTripleChecker+Invalid, 222 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 56 IncrementalHoareTripleChecker+Valid, 166 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-20 19:02:48,286 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [218 Valid, 206 Invalid, 222 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [56 Valid, 166 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-20 19:02:48,287 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 274 states. [2024-11-20 19:02:48,312 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 274 to 236. [2024-11-20 19:02:48,313 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 236 states, 182 states have (on average 1.2637362637362637) internal successors, (230), 189 states have internal predecessors, (230), 36 states have call successors, (36), 13 states have call predecessors, (36), 12 states have return successors, (33), 33 states have call predecessors, (33), 33 states have call successors, (33) [2024-11-20 19:02:48,314 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 236 states to 236 states and 299 transitions. [2024-11-20 19:02:48,315 INFO L78 Accepts]: Start accepts. Automaton has 236 states and 299 transitions. Word has length 15 [2024-11-20 19:02:48,315 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-20 19:02:48,315 INFO L471 AbstractCegarLoop]: Abstraction has 236 states and 299 transitions. [2024-11-20 19:02:48,315 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 2.1818181818181817) internal successors, (24), 8 states have internal predecessors, (24), 4 states have call successors, (4), 4 states have call predecessors, (4), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-20 19:02:48,315 INFO L276 IsEmpty]: Start isEmpty. Operand 236 states and 299 transitions. [2024-11-20 19:02:48,316 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2024-11-20 19:02:48,316 INFO L207 NwaCegarLoop]: Found error trace [2024-11-20 19:02:48,316 INFO L215 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-20 19:02:48,326 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-20 19:02:48,520 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 [2024-11-20 19:02:48,521 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ackermannErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ackermannErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ackermannErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ackermannErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 5 more)] === [2024-11-20 19:02:48,521 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 19:02:48,521 INFO L85 PathProgramCache]: Analyzing trace with hash -600892461, now seen corresponding path program 1 times [2024-11-20 19:02:48,525 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 19:02:48,525 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1403011250] [2024-11-20 19:02:48,525 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 19:02:48,525 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 19:02:48,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 19:02:48,622 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 19:02:48,622 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 19:02:48,626 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1403011250] [2024-11-20 19:02:48,626 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1403011250] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-20 19:02:48,626 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1683167562] [2024-11-20 19:02:48,626 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 19:02:48,626 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-20 19:02:48,627 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-20 19:02:48,628 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) [2024-11-20 19:02:48,629 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-20 19:02:48,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 19:02:48,654 INFO L255 TraceCheckSpWp]: Trace formula consists of 58 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-20 19:02:48,655 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-20 19:02:48,722 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 19:02:48,722 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-20 19:02:48,810 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 19:02:48,810 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1683167562] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-20 19:02:48,810 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-20 19:02:48,810 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 11 [2024-11-20 19:02:48,810 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [286679905] [2024-11-20 19:02:48,811 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-20 19:02:48,811 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-11-20 19:02:48,811 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 19:02:48,811 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-11-20 19:02:48,811 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=98, Unknown=0, NotChecked=0, Total=132 [2024-11-20 19:02:48,811 INFO L87 Difference]: Start difference. First operand 236 states and 299 transitions. Second operand has 12 states, 9 states have (on average 2.7777777777777777) internal successors, (25), 8 states have internal predecessors, (25), 4 states have call successors, (4), 4 states have call predecessors, (4), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-20 19:02:49,019 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-20 19:02:49,020 INFO L93 Difference]: Finished difference Result 498 states and 669 transitions. [2024-11-20 19:02:49,020 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-11-20 19:02:49,020 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 9 states have (on average 2.7777777777777777) internal successors, (25), 8 states have internal predecessors, (25), 4 states have call successors, (4), 4 states have call predecessors, (4), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 16 [2024-11-20 19:02:49,020 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-20 19:02:49,023 INFO L225 Difference]: With dead ends: 498 [2024-11-20 19:02:49,023 INFO L226 Difference]: Without dead ends: 496 [2024-11-20 19:02:49,023 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=77, Invalid=195, Unknown=0, NotChecked=0, Total=272 [2024-11-20 19:02:49,024 INFO L432 NwaCegarLoop]: 23 mSDtfsCounter, 142 mSDsluCounter, 139 mSDsCounter, 0 mSdLazyCounter, 171 mSolverCounterSat, 38 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 147 SdHoareTripleChecker+Valid, 162 SdHoareTripleChecker+Invalid, 209 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 38 IncrementalHoareTripleChecker+Valid, 171 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-20 19:02:49,024 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [147 Valid, 162 Invalid, 209 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [38 Valid, 171 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-20 19:02:49,025 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 496 states. [2024-11-20 19:02:49,060 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 496 to 445. [2024-11-20 19:02:49,060 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 445 states, 347 states have (on average 1.2276657060518732) internal successors, (426), 354 states have internal predecessors, (426), 69 states have call successors, (69), 24 states have call predecessors, (69), 23 states have return successors, (66), 66 states have call predecessors, (66), 66 states have call successors, (66) [2024-11-20 19:02:49,063 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 445 states to 445 states and 561 transitions. [2024-11-20 19:02:49,063 INFO L78 Accepts]: Start accepts. Automaton has 445 states and 561 transitions. Word has length 16 [2024-11-20 19:02:49,064 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-20 19:02:49,064 INFO L471 AbstractCegarLoop]: Abstraction has 445 states and 561 transitions. [2024-11-20 19:02:49,064 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 9 states have (on average 2.7777777777777777) internal successors, (25), 8 states have internal predecessors, (25), 4 states have call successors, (4), 4 states have call predecessors, (4), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-20 19:02:49,064 INFO L276 IsEmpty]: Start isEmpty. Operand 445 states and 561 transitions. [2024-11-20 19:02:49,065 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2024-11-20 19:02:49,065 INFO L207 NwaCegarLoop]: Found error trace [2024-11-20 19:02:49,065 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, 1] [2024-11-20 19:02:49,072 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2024-11-20 19:02:49,269 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 [2024-11-20 19:02:49,270 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ackermannErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ackermannErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ackermannErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ackermannErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 5 more)] === [2024-11-20 19:02:49,270 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 19:02:49,270 INFO L85 PathProgramCache]: Analyzing trace with hash 1979487198, now seen corresponding path program 1 times [2024-11-20 19:02:49,271 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 19:02:49,271 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [169756546] [2024-11-20 19:02:49,271 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 19:02:49,271 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 19:02:49,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 19:02:49,339 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2024-11-20 19:02:49,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 19:02:49,372 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 4 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-20 19:02:49,373 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 19:02:49,373 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [169756546] [2024-11-20 19:02:49,373 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [169756546] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-20 19:02:49,373 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [550179340] [2024-11-20 19:02:49,373 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 19:02:49,373 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-20 19:02:49,374 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-20 19:02:49,376 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) [2024-11-20 19:02:49,377 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-20 19:02:49,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 19:02:49,407 INFO L255 TraceCheckSpWp]: Trace formula consists of 79 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-20 19:02:49,408 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-20 19:02:49,464 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-20 19:02:49,464 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-20 19:02:49,464 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [550179340] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-20 19:02:49,464 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-20 19:02:49,465 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [7] total 12 [2024-11-20 19:02:49,465 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [373647809] [2024-11-20 19:02:49,465 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-20 19:02:49,465 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-20 19:02:49,466 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 19:02:49,466 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-20 19:02:49,467 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=128, Unknown=0, NotChecked=0, Total=156 [2024-11-20 19:02:49,467 INFO L87 Difference]: Start difference. First operand 445 states and 561 transitions. Second operand has 7 states, 6 states have (on average 3.1666666666666665) internal successors, (19), 6 states have internal predecessors, (19), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-20 19:02:49,627 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-20 19:02:49,627 INFO L93 Difference]: Finished difference Result 494 states and 650 transitions. [2024-11-20 19:02:49,630 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-11-20 19:02:49,630 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 3.1666666666666665) internal successors, (19), 6 states have internal predecessors, (19), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 24 [2024-11-20 19:02:49,630 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-20 19:02:49,633 INFO L225 Difference]: With dead ends: 494 [2024-11-20 19:02:49,633 INFO L226 Difference]: Without dead ends: 493 [2024-11-20 19:02:49,633 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=64, Invalid=278, Unknown=0, NotChecked=0, Total=342 [2024-11-20 19:02:49,634 INFO L432 NwaCegarLoop]: 38 mSDtfsCounter, 45 mSDsluCounter, 101 mSDsCounter, 0 mSdLazyCounter, 89 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 47 SdHoareTripleChecker+Valid, 139 SdHoareTripleChecker+Invalid, 104 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 89 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-20 19:02:49,634 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [47 Valid, 139 Invalid, 104 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 89 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-20 19:02:49,637 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 493 states. [2024-11-20 19:02:49,676 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 493 to 444. [2024-11-20 19:02:49,677 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 444 states, 347 states have (on average 1.2161383285302594) internal successors, (422), 353 states have internal predecessors, (422), 69 states have call successors, (69), 24 states have call predecessors, (69), 23 states have return successors, (66), 66 states have call predecessors, (66), 66 states have call successors, (66) [2024-11-20 19:02:49,680 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 444 states to 444 states and 557 transitions. [2024-11-20 19:02:49,680 INFO L78 Accepts]: Start accepts. Automaton has 444 states and 557 transitions. Word has length 24 [2024-11-20 19:02:49,681 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-20 19:02:49,681 INFO L471 AbstractCegarLoop]: Abstraction has 444 states and 557 transitions. [2024-11-20 19:02:49,681 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 3.1666666666666665) internal successors, (19), 6 states have internal predecessors, (19), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-20 19:02:49,681 INFO L276 IsEmpty]: Start isEmpty. Operand 444 states and 557 transitions. [2024-11-20 19:02:49,685 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2024-11-20 19:02:49,685 INFO L207 NwaCegarLoop]: Found error trace [2024-11-20 19:02:49,685 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, 1] [2024-11-20 19:02:49,691 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-11-20 19:02:49,889 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 [2024-11-20 19:02:49,889 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ackermannErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ackermannErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ackermannErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ackermannErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 5 more)] === [2024-11-20 19:02:49,890 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 19:02:49,890 INFO L85 PathProgramCache]: Analyzing trace with hash 1234561058, now seen corresponding path program 1 times [2024-11-20 19:02:49,890 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 19:02:49,890 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [596084522] [2024-11-20 19:02:49,890 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 19:02:49,890 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 19:02:49,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 19:02:49,937 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2024-11-20 19:02:49,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 19:02:49,966 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 1 proven. 5 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-20 19:02:49,966 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 19:02:49,966 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [596084522] [2024-11-20 19:02:49,967 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [596084522] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-20 19:02:49,967 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [663917544] [2024-11-20 19:02:49,967 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 19:02:49,967 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-20 19:02:49,967 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-20 19:02:49,969 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) [2024-11-20 19:02:49,974 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-20 19:02:50,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 19:02:50,000 INFO L255 TraceCheckSpWp]: Trace formula consists of 80 conjuncts, 10 conjuncts are in the unsatisfiable core [2024-11-20 19:02:50,001 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-20 19:02:50,045 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 1 proven. 5 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-20 19:02:50,045 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-20 19:02:50,187 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 1 proven. 5 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-20 19:02:50,188 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [663917544] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-20 19:02:50,188 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-20 19:02:50,188 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 14 [2024-11-20 19:02:50,188 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1556007420] [2024-11-20 19:02:50,188 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-20 19:02:50,189 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2024-11-20 19:02:50,189 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 19:02:50,189 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2024-11-20 19:02:50,189 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=174, Unknown=0, NotChecked=0, Total=210 [2024-11-20 19:02:50,190 INFO L87 Difference]: Start difference. First operand 444 states and 557 transitions. Second operand has 15 states, 12 states have (on average 3.4166666666666665) internal successors, (41), 13 states have internal predecessors, (41), 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) [2024-11-20 19:02:50,489 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-20 19:02:50,490 INFO L93 Difference]: Finished difference Result 807 states and 1179 transitions. [2024-11-20 19:02:50,490 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2024-11-20 19:02:50,490 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 12 states have (on average 3.4166666666666665) internal successors, (41), 13 states have internal predecessors, (41), 6 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 25 [2024-11-20 19:02:50,490 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-20 19:02:50,494 INFO L225 Difference]: With dead ends: 807 [2024-11-20 19:02:50,494 INFO L226 Difference]: Without dead ends: 805 [2024-11-20 19:02:50,495 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 69 GetRequests, 44 SyntacticMatches, 1 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 70 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=138, Invalid=512, Unknown=0, NotChecked=0, Total=650 [2024-11-20 19:02:50,496 INFO L432 NwaCegarLoop]: 20 mSDtfsCounter, 123 mSDsluCounter, 157 mSDsCounter, 0 mSdLazyCounter, 229 mSolverCounterSat, 83 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 132 SdHoareTripleChecker+Valid, 177 SdHoareTripleChecker+Invalid, 312 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 83 IncrementalHoareTripleChecker+Valid, 229 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-20 19:02:50,496 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [132 Valid, 177 Invalid, 312 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [83 Valid, 229 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-20 19:02:50,497 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 805 states. [2024-11-20 19:02:50,538 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 805 to 641. [2024-11-20 19:02:50,539 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 641 states, 477 states have (on average 1.2033542976939204) internal successors, (574), 505 states have internal predecessors, (574), 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) [2024-11-20 19:02:50,542 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 641 states to 641 states and 875 transitions. [2024-11-20 19:02:50,543 INFO L78 Accepts]: Start accepts. Automaton has 641 states and 875 transitions. Word has length 25 [2024-11-20 19:02:50,543 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-20 19:02:50,543 INFO L471 AbstractCegarLoop]: Abstraction has 641 states and 875 transitions. [2024-11-20 19:02:50,543 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 12 states have (on average 3.4166666666666665) internal successors, (41), 13 states have internal predecessors, (41), 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) [2024-11-20 19:02:50,543 INFO L276 IsEmpty]: Start isEmpty. Operand 641 states and 875 transitions. [2024-11-20 19:02:50,544 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2024-11-20 19:02:50,544 INFO L207 NwaCegarLoop]: Found error trace [2024-11-20 19:02:50,544 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1] [2024-11-20 19:02:50,554 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-11-20 19:02:50,748 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 [2024-11-20 19:02:50,749 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ackermannErr6ASSERT_VIOLATIONINTEGER_OVERFLOW === [ackermannErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ackermannErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ackermannErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 5 more)] === [2024-11-20 19:02:50,749 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 19:02:50,749 INFO L85 PathProgramCache]: Analyzing trace with hash -2137182870, now seen corresponding path program 1 times [2024-11-20 19:02:50,749 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 19:02:50,749 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1705894767] [2024-11-20 19:02:50,749 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 19:02:50,750 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 19:02:50,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 19:02:50,803 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 19:02:50,803 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 19:02:50,803 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1705894767] [2024-11-20 19:02:50,803 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1705894767] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-20 19:02:50,803 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1022355591] [2024-11-20 19:02:50,803 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 19:02:50,803 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-20 19:02:50,804 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-20 19:02:50,805 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) [2024-11-20 19:02:50,806 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-20 19:02:50,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 19:02:50,830 INFO L255 TraceCheckSpWp]: Trace formula consists of 76 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-11-20 19:02:50,830 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-20 19:02:50,860 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 19:02:50,860 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-20 19:02:50,933 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 19:02:50,933 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1022355591] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-20 19:02:50,933 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-20 19:02:50,933 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 15 [2024-11-20 19:02:50,933 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1331366099] [2024-11-20 19:02:50,933 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-20 19:02:50,934 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2024-11-20 19:02:50,934 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 19:02:50,934 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2024-11-20 19:02:50,934 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=60, Invalid=180, Unknown=0, NotChecked=0, Total=240 [2024-11-20 19:02:50,935 INFO L87 Difference]: Start difference. First operand 641 states and 875 transitions. Second operand has 16 states, 13 states have (on average 3.4615384615384617) internal successors, (45), 10 states have internal predecessors, (45), 6 states have call successors, (6), 6 states have call predecessors, (6), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-20 19:02:51,201 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-20 19:02:51,201 INFO L93 Difference]: Finished difference Result 997 states and 1430 transitions. [2024-11-20 19:02:51,202 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2024-11-20 19:02:51,202 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 13 states have (on average 3.4615384615384617) internal successors, (45), 10 states have internal predecessors, (45), 6 states have call successors, (6), 6 states have call predecessors, (6), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 27 [2024-11-20 19:02:51,202 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-20 19:02:51,206 INFO L225 Difference]: With dead ends: 997 [2024-11-20 19:02:51,206 INFO L226 Difference]: Without dead ends: 996 [2024-11-20 19:02:51,206 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 66 GetRequests, 46 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 60 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=129, Invalid=333, Unknown=0, NotChecked=0, Total=462 [2024-11-20 19:02:51,207 INFO L432 NwaCegarLoop]: 25 mSDtfsCounter, 184 mSDsluCounter, 267 mSDsCounter, 0 mSdLazyCounter, 241 mSolverCounterSat, 40 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 191 SdHoareTripleChecker+Valid, 292 SdHoareTripleChecker+Invalid, 281 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 40 IncrementalHoareTripleChecker+Valid, 241 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-20 19:02:51,207 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [191 Valid, 292 Invalid, 281 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [40 Valid, 241 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-20 19:02:51,208 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 996 states. [2024-11-20 19:02:51,254 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 996 to 917. [2024-11-20 19:02:51,256 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 917 states, 681 states have (on average 1.171806167400881) internal successors, (798), 721 states have internal predecessors, (798), 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) [2024-11-20 19:02:51,259 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 917 states to 917 states and 1231 transitions. [2024-11-20 19:02:51,260 INFO L78 Accepts]: Start accepts. Automaton has 917 states and 1231 transitions. Word has length 27 [2024-11-20 19:02:51,260 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-20 19:02:51,260 INFO L471 AbstractCegarLoop]: Abstraction has 917 states and 1231 transitions. [2024-11-20 19:02:51,260 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 13 states have (on average 3.4615384615384617) internal successors, (45), 10 states have internal predecessors, (45), 6 states have call successors, (6), 6 states have call predecessors, (6), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-20 19:02:51,260 INFO L276 IsEmpty]: Start isEmpty. Operand 917 states and 1231 transitions. [2024-11-20 19:02:51,261 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2024-11-20 19:02:51,261 INFO L207 NwaCegarLoop]: Found error trace [2024-11-20 19:02:51,261 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, 1] [2024-11-20 19:02:51,268 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2024-11-20 19:02:51,465 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 [2024-11-20 19:02:51,466 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ackermannErr6ASSERT_VIOLATIONINTEGER_OVERFLOW === [ackermannErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ackermannErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ackermannErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 5 more)] === [2024-11-20 19:02:51,466 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 19:02:51,466 INFO L85 PathProgramCache]: Analyzing trace with hash 1007222953, now seen corresponding path program 1 times [2024-11-20 19:02:51,466 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 19:02:51,466 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1019829143] [2024-11-20 19:02:51,467 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 19:02:51,467 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 19:02:51,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 19:02:51,506 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2024-11-20 19:02:51,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 19:02:51,532 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-11-20 19:02:51,532 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 19:02:51,532 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1019829143] [2024-11-20 19:02:51,532 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1019829143] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-20 19:02:51,533 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1476576937] [2024-11-20 19:02:51,533 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 19:02:51,533 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-20 19:02:51,533 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-20 19:02:51,534 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) [2024-11-20 19:02:51,536 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-11-20 19:02:51,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 19:02:51,565 INFO L255 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 10 conjuncts are in the unsatisfiable core [2024-11-20 19:02:51,566 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-20 19:02:51,593 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-11-20 19:02:51,594 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-20 19:02:51,713 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-11-20 19:02:51,713 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1476576937] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-20 19:02:51,713 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-20 19:02:51,713 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 14 [2024-11-20 19:02:51,713 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2022817394] [2024-11-20 19:02:51,713 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-20 19:02:51,714 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2024-11-20 19:02:51,714 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 19:02:51,714 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2024-11-20 19:02:51,714 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=173, Unknown=0, NotChecked=0, Total=210 [2024-11-20 19:02:51,714 INFO L87 Difference]: Start difference. First operand 917 states and 1231 transitions. Second operand has 15 states, 12 states have (on average 3.0833333333333335) internal successors, (37), 13 states have internal predecessors, (37), 6 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-20 19:02:51,981 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-20 19:02:51,981 INFO L93 Difference]: Finished difference Result 1478 states and 2205 transitions. [2024-11-20 19:02:51,981 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-11-20 19:02:51,982 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 12 states have (on average 3.0833333333333335) internal successors, (37), 13 states have internal predecessors, (37), 6 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 27 [2024-11-20 19:02:51,982 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-20 19:02:51,988 INFO L225 Difference]: With dead ends: 1478 [2024-11-20 19:02:51,988 INFO L226 Difference]: Without dead ends: 1473 [2024-11-20 19:02:51,988 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 70 GetRequests, 48 SyntacticMatches, 1 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 44 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=115, Invalid=391, Unknown=0, NotChecked=0, Total=506 [2024-11-20 19:02:51,989 INFO L432 NwaCegarLoop]: 20 mSDtfsCounter, 85 mSDsluCounter, 143 mSDsCounter, 0 mSdLazyCounter, 227 mSolverCounterSat, 68 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 87 SdHoareTripleChecker+Valid, 163 SdHoareTripleChecker+Invalid, 295 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 68 IncrementalHoareTripleChecker+Valid, 227 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-20 19:02:51,989 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [87 Valid, 163 Invalid, 295 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [68 Valid, 227 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-20 19:02:51,990 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1473 states. [2024-11-20 19:02:52,111 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1473 to 1080. [2024-11-20 19:02:52,113 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1080 states, 804 states have (on average 1.1703980099502487) internal successors, (941), 853 states have internal predecessors, (941), 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) [2024-11-20 19:02:52,118 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1080 states to 1080 states and 1531 transitions. [2024-11-20 19:02:52,119 INFO L78 Accepts]: Start accepts. Automaton has 1080 states and 1531 transitions. Word has length 27 [2024-11-20 19:02:52,119 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-20 19:02:52,119 INFO L471 AbstractCegarLoop]: Abstraction has 1080 states and 1531 transitions. [2024-11-20 19:02:52,120 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 12 states have (on average 3.0833333333333335) internal successors, (37), 13 states have internal predecessors, (37), 6 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-20 19:02:52,120 INFO L276 IsEmpty]: Start isEmpty. Operand 1080 states and 1531 transitions. [2024-11-20 19:02:52,120 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2024-11-20 19:02:52,121 INFO L207 NwaCegarLoop]: Found error trace [2024-11-20 19:02:52,121 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, 1] [2024-11-20 19:02:52,131 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2024-11-20 19:02:52,324 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 [2024-11-20 19:02:52,325 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ackermannErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ackermannErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ackermannErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ackermannErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 5 more)] === [2024-11-20 19:02:52,325 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 19:02:52,326 INFO L85 PathProgramCache]: Analyzing trace with hash 1878013265, now seen corresponding path program 1 times [2024-11-20 19:02:52,326 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 19:02:52,326 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [791084113] [2024-11-20 19:02:52,326 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 19:02:52,326 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 19:02:52,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 19:02:52,399 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2024-11-20 19:02:52,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 19:02:52,426 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-11-20 19:02:52,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 19:02:52,460 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 9 proven. 3 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-11-20 19:02:52,460 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 19:02:52,460 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [791084113] [2024-11-20 19:02:52,460 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [791084113] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-20 19:02:52,460 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1430594820] [2024-11-20 19:02:52,460 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 19:02:52,460 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-20 19:02:52,461 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-20 19:02:52,462 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) [2024-11-20 19:02:52,464 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-11-20 19:02:52,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 19:02:52,491 INFO L255 TraceCheckSpWp]: Trace formula consists of 102 conjuncts, 9 conjuncts are in the unsatisfiable core [2024-11-20 19:02:52,492 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-20 19:02:52,543 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 7 proven. 5 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-11-20 19:02:52,543 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-20 19:02:52,812 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 9 proven. 3 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-11-20 19:02:52,813 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1430594820] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-20 19:02:52,813 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-20 19:02:52,813 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 17 [2024-11-20 19:02:52,813 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1348486359] [2024-11-20 19:02:52,813 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-20 19:02:52,813 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2024-11-20 19:02:52,813 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 19:02:52,814 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2024-11-20 19:02:52,814 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=260, Unknown=0, NotChecked=0, Total=306 [2024-11-20 19:02:52,814 INFO L87 Difference]: Start difference. First operand 1080 states and 1531 transitions. Second operand has 18 states, 17 states have (on average 2.5294117647058822) internal successors, (43), 14 states have internal predecessors, (43), 3 states have call successors, (5), 3 states have call predecessors, (5), 5 states have return successors, (5), 4 states have call predecessors, (5), 1 states have call successors, (5) [2024-11-20 19:02:53,335 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-20 19:02:53,335 INFO L93 Difference]: Finished difference Result 1883 states and 3145 transitions. [2024-11-20 19:02:53,335 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-11-20 19:02:53,336 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 17 states have (on average 2.5294117647058822) internal successors, (43), 14 states have internal predecessors, (43), 3 states have call successors, (5), 3 states have call predecessors, (5), 5 states have return successors, (5), 4 states have call predecessors, (5), 1 states have call successors, (5) Word has length 34 [2024-11-20 19:02:53,336 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-20 19:02:53,344 INFO L225 Difference]: With dead ends: 1883 [2024-11-20 19:02:53,344 INFO L226 Difference]: Without dead ends: 1869 [2024-11-20 19:02:53,346 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 91 GetRequests, 64 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 86 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=140, Invalid=672, Unknown=0, NotChecked=0, Total=812 [2024-11-20 19:02:53,347 INFO L432 NwaCegarLoop]: 27 mSDtfsCounter, 108 mSDsluCounter, 152 mSDsCounter, 0 mSdLazyCounter, 275 mSolverCounterSat, 127 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 108 SdHoareTripleChecker+Valid, 179 SdHoareTripleChecker+Invalid, 402 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 127 IncrementalHoareTripleChecker+Valid, 275 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-20 19:02:53,347 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [108 Valid, 179 Invalid, 402 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [127 Valid, 275 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-20 19:02:53,348 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1869 states. [2024-11-20 19:02:53,489 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1869 to 1577. [2024-11-20 19:02:53,491 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1577 states, 1149 states have (on average 1.162750217580505) internal successors, (1336), 1210 states have internal predecessors, (1336), 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) [2024-11-20 19:02:53,497 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1577 states to 1577 states and 2381 transitions. [2024-11-20 19:02:53,497 INFO L78 Accepts]: Start accepts. Automaton has 1577 states and 2381 transitions. Word has length 34 [2024-11-20 19:02:53,497 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-20 19:02:53,498 INFO L471 AbstractCegarLoop]: Abstraction has 1577 states and 2381 transitions. [2024-11-20 19:02:53,498 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 17 states have (on average 2.5294117647058822) internal successors, (43), 14 states have internal predecessors, (43), 3 states have call successors, (5), 3 states have call predecessors, (5), 5 states have return successors, (5), 4 states have call predecessors, (5), 1 states have call successors, (5) [2024-11-20 19:02:53,498 INFO L276 IsEmpty]: Start isEmpty. Operand 1577 states and 2381 transitions. [2024-11-20 19:02:53,498 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2024-11-20 19:02:53,499 INFO L207 NwaCegarLoop]: Found error trace [2024-11-20 19:02:53,499 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, 1] [2024-11-20 19:02:53,509 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2024-11-20 19:02:53,699 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 [2024-11-20 19:02:53,700 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ackermannErr6ASSERT_VIOLATIONINTEGER_OVERFLOW === [ackermannErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ackermannErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ackermannErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 5 more)] === [2024-11-20 19:02:53,700 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 19:02:53,700 INFO L85 PathProgramCache]: Analyzing trace with hash 889503256, now seen corresponding path program 1 times [2024-11-20 19:02:53,700 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 19:02:53,700 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1701060277] [2024-11-20 19:02:53,700 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 19:02:53,700 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 19:02:53,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 19:02:53,744 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2024-11-20 19:02:53,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 19:02:53,762 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-11-20 19:02:53,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 19:02:53,785 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 14 proven. 1 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-11-20 19:02:53,785 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 19:02:53,785 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1701060277] [2024-11-20 19:02:53,785 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1701060277] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-20 19:02:53,785 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [52173853] [2024-11-20 19:02:53,785 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 19:02:53,785 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-20 19:02:53,785 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-20 19:02:53,787 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) [2024-11-20 19:02:53,791 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-11-20 19:02:53,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 19:02:53,817 INFO L255 TraceCheckSpWp]: Trace formula consists of 103 conjuncts, 9 conjuncts are in the unsatisfiable core [2024-11-20 19:02:53,818 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-20 19:02:53,849 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 12 proven. 3 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-11-20 19:02:53,849 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-20 19:02:54,006 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-11-20 19:02:54,006 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [52173853] provided 1 perfect and 1 imperfect interpolant sequences [2024-11-20 19:02:54,006 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2024-11-20 19:02:54,006 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [8, 8] total 17 [2024-11-20 19:02:54,006 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2048473850] [2024-11-20 19:02:54,007 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-20 19:02:54,007 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-11-20 19:02:54,007 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 19:02:54,007 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-11-20 19:02:54,007 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=258, Unknown=0, NotChecked=0, Total=306 [2024-11-20 19:02:54,008 INFO L87 Difference]: Start difference. First operand 1577 states and 2381 transitions. Second operand has 9 states, 8 states have (on average 3.5) internal successors, (28), 7 states have internal predecessors, (28), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2024-11-20 19:02:54,296 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-20 19:02:54,297 INFO L93 Difference]: Finished difference Result 1784 states and 2841 transitions. [2024-11-20 19:02:54,297 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-11-20 19:02:54,297 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.5) internal successors, (28), 7 states have internal predecessors, (28), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) Word has length 36 [2024-11-20 19:02:54,297 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-20 19:02:54,304 INFO L225 Difference]: With dead ends: 1784 [2024-11-20 19:02:54,304 INFO L226 Difference]: Without dead ends: 1783 [2024-11-20 19:02:54,305 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 87 GetRequests, 66 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 49 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=75, Invalid=431, Unknown=0, NotChecked=0, Total=506 [2024-11-20 19:02:54,305 INFO L432 NwaCegarLoop]: 37 mSDtfsCounter, 36 mSDsluCounter, 169 mSDsCounter, 0 mSdLazyCounter, 217 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 44 SdHoareTripleChecker+Valid, 206 SdHoareTripleChecker+Invalid, 235 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 217 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-20 19:02:54,305 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [44 Valid, 206 Invalid, 235 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 217 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-20 19:02:54,306 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1783 states. [2024-11-20 19:02:54,408 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1783 to 1614. [2024-11-20 19:02:54,410 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1614 states, 1173 states have (on average 1.1568627450980393) internal successors, (1357), 1231 states have internal predecessors, (1357), 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) [2024-11-20 19:02:54,416 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1614 states to 1614 states and 2347 transitions. [2024-11-20 19:02:54,417 INFO L78 Accepts]: Start accepts. Automaton has 1614 states and 2347 transitions. Word has length 36 [2024-11-20 19:02:54,417 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-20 19:02:54,417 INFO L471 AbstractCegarLoop]: Abstraction has 1614 states and 2347 transitions. [2024-11-20 19:02:54,417 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 3.5) internal successors, (28), 7 states have internal predecessors, (28), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2024-11-20 19:02:54,417 INFO L276 IsEmpty]: Start isEmpty. Operand 1614 states and 2347 transitions. [2024-11-20 19:02:54,418 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2024-11-20 19:02:54,419 INFO L207 NwaCegarLoop]: Found error trace [2024-11-20 19:02:54,419 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, 1] [2024-11-20 19:02:54,434 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2024-11-20 19:02:54,622 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 [2024-11-20 19:02:54,623 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ackermannErr6ASSERT_VIOLATIONINTEGER_OVERFLOW === [ackermannErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ackermannErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ackermannErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 5 more)] === [2024-11-20 19:02:54,624 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 19:02:54,624 INFO L85 PathProgramCache]: Analyzing trace with hash 791091541, now seen corresponding path program 2 times [2024-11-20 19:02:54,624 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 19:02:54,624 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2067745106] [2024-11-20 19:02:54,624 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 19:02:54,624 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 19:02:54,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 19:02:54,822 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2024-11-20 19:02:54,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 19:02:54,902 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 2 proven. 40 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2024-11-20 19:02:54,902 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 19:02:54,902 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2067745106] [2024-11-20 19:02:54,902 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2067745106] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-20 19:02:54,902 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1817983517] [2024-11-20 19:02:54,902 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-20 19:02:54,902 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-20 19:02:54,903 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-20 19:02:54,904 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) [2024-11-20 19:02:54,906 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-11-20 19:02:54,936 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-20 19:02:54,936 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-20 19:02:54,936 INFO L255 TraceCheckSpWp]: Trace formula consists of 113 conjuncts, 14 conjuncts are in the unsatisfiable core [2024-11-20 19:02:54,938 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-20 19:02:55,000 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 2 proven. 40 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2024-11-20 19:02:55,001 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-20 19:02:55,217 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 4 proven. 38 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2024-11-20 19:02:55,217 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1817983517] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-20 19:02:55,217 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-20 19:02:55,221 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 22 [2024-11-20 19:02:55,221 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [666359276] [2024-11-20 19:02:55,221 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-20 19:02:55,222 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2024-11-20 19:02:55,222 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 19:02:55,222 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2024-11-20 19:02:55,222 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=85, Invalid=421, Unknown=0, NotChecked=0, Total=506 [2024-11-20 19:02:55,222 INFO L87 Difference]: Start difference. First operand 1614 states and 2347 transitions. Second operand has 23 states, 20 states have (on average 3.05) internal successors, (61), 17 states have internal predecessors, (61), 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) [2024-11-20 19:02:56,043 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-20 19:02:56,043 INFO L93 Difference]: Finished difference Result 3197 states and 5554 transitions. [2024-11-20 19:02:56,044 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2024-11-20 19:02:56,044 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 20 states have (on average 3.05) internal successors, (61), 17 states have internal predecessors, (61), 8 states have call successors, (10), 7 states have call predecessors, (10), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 43 [2024-11-20 19:02:56,044 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-20 19:02:56,060 INFO L225 Difference]: With dead ends: 3197 [2024-11-20 19:02:56,061 INFO L226 Difference]: Without dead ends: 3196 [2024-11-20 19:02:56,063 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 123 GetRequests, 77 SyntacticMatches, 0 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 424 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=491, Invalid=1765, Unknown=0, NotChecked=0, Total=2256 [2024-11-20 19:02:56,063 INFO L432 NwaCegarLoop]: 20 mSDtfsCounter, 380 mSDsluCounter, 174 mSDsCounter, 0 mSdLazyCounter, 309 mSolverCounterSat, 253 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 382 SdHoareTripleChecker+Valid, 194 SdHoareTripleChecker+Invalid, 562 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 253 IncrementalHoareTripleChecker+Valid, 309 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-20 19:02:56,064 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [382 Valid, 194 Invalid, 562 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [253 Valid, 309 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-20 19:02:56,066 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3196 states. [2024-11-20 19:02:56,286 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3196 to 2201. [2024-11-20 19:02:56,288 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2201 states, 1612 states have (on average 1.1557071960297767) internal successors, (1863), 1689 states have internal predecessors, (1863), 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) [2024-11-20 19:02:56,294 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2201 states to 2201 states and 3382 transitions. [2024-11-20 19:02:56,296 INFO L78 Accepts]: Start accepts. Automaton has 2201 states and 3382 transitions. Word has length 43 [2024-11-20 19:02:56,296 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-20 19:02:56,296 INFO L471 AbstractCegarLoop]: Abstraction has 2201 states and 3382 transitions. [2024-11-20 19:02:56,296 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 20 states have (on average 3.05) internal successors, (61), 17 states have internal predecessors, (61), 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) [2024-11-20 19:02:56,296 INFO L276 IsEmpty]: Start isEmpty. Operand 2201 states and 3382 transitions. [2024-11-20 19:02:56,297 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2024-11-20 19:02:56,297 INFO L207 NwaCegarLoop]: Found error trace [2024-11-20 19:02:56,297 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, 1] [2024-11-20 19:02:56,307 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2024-11-20 19:02:56,501 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 [2024-11-20 19:02:56,502 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ackermannErr6ASSERT_VIOLATIONINTEGER_OVERFLOW === [ackermannErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ackermannErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ackermannErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 5 more)] === [2024-11-20 19:02:56,502 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 19:02:56,502 INFO L85 PathProgramCache]: Analyzing trace with hash -328093970, now seen corresponding path program 2 times [2024-11-20 19:02:56,502 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 19:02:56,502 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [863162043] [2024-11-20 19:02:56,503 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 19:02:56,503 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 19:02:56,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 19:02:56,554 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2024-11-20 19:02:56,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 19:02:56,575 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-11-20 19:02:56,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 19:02:56,606 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 26 proven. 8 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-11-20 19:02:56,606 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 19:02:56,606 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [863162043] [2024-11-20 19:02:56,606 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [863162043] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-20 19:02:56,606 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1700748038] [2024-11-20 19:02:56,606 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-20 19:02:56,606 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-20 19:02:56,607 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-20 19:02:56,608 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) [2024-11-20 19:02:56,609 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2024-11-20 19:02:56,639 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-20 19:02:56,639 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-20 19:02:56,640 INFO L255 TraceCheckSpWp]: Trace formula consists of 119 conjuncts, 11 conjuncts are in the unsatisfiable core [2024-11-20 19:02:56,641 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-20 19:02:56,701 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 24 proven. 10 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-11-20 19:02:56,701 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-20 19:02:56,873 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 28 proven. 6 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-11-20 19:02:56,874 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1700748038] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-20 19:02:56,875 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-20 19:02:56,875 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 10] total 21 [2024-11-20 19:02:56,875 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1421465583] [2024-11-20 19:02:56,875 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-20 19:02:56,875 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2024-11-20 19:02:56,875 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 19:02:56,875 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2024-11-20 19:02:56,876 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=394, Unknown=0, NotChecked=0, Total=462 [2024-11-20 19:02:56,876 INFO L87 Difference]: Start difference. First operand 2201 states and 3382 transitions. Second operand has 22 states, 21 states have (on average 2.9047619047619047) internal successors, (61), 16 states have internal predecessors, (61), 5 states have call successors, (7), 5 states have call predecessors, (7), 5 states have return successors, (5), 4 states have call predecessors, (5), 1 states have call successors, (5) [2024-11-20 19:02:57,953 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-20 19:02:57,953 INFO L93 Difference]: Finished difference Result 4455 states and 8209 transitions. [2024-11-20 19:02:57,953 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2024-11-20 19:02:57,953 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 21 states have (on average 2.9047619047619047) internal successors, (61), 16 states have internal predecessors, (61), 5 states have call successors, (7), 5 states have call predecessors, (7), 5 states have return successors, (5), 4 states have call predecessors, (5), 1 states have call successors, (5) Word has length 44 [2024-11-20 19:02:57,954 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-20 19:02:57,970 INFO L225 Difference]: With dead ends: 4455 [2024-11-20 19:02:57,970 INFO L226 Difference]: Without dead ends: 3140 [2024-11-20 19:02:57,982 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 135 GetRequests, 86 SyntacticMatches, 0 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 498 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=501, Invalid=2049, Unknown=0, NotChecked=0, Total=2550 [2024-11-20 19:02:57,982 INFO L432 NwaCegarLoop]: 39 mSDtfsCounter, 178 mSDsluCounter, 299 mSDsCounter, 0 mSdLazyCounter, 579 mSolverCounterSat, 173 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 178 SdHoareTripleChecker+Valid, 338 SdHoareTripleChecker+Invalid, 752 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 173 IncrementalHoareTripleChecker+Valid, 579 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-20 19:02:57,982 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [178 Valid, 338 Invalid, 752 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [173 Valid, 579 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-20 19:02:57,984 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3140 states. [2024-11-20 19:02:58,237 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3140 to 2494. [2024-11-20 19:02:58,240 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2494 states, 1823 states have (on average 1.1492046077893583) internal successors, (2095), 1909 states have internal predecessors, (2095), 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) [2024-11-20 19:02:58,247 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2494 states to 2494 states and 3766 transitions. [2024-11-20 19:02:58,248 INFO L78 Accepts]: Start accepts. Automaton has 2494 states and 3766 transitions. Word has length 44 [2024-11-20 19:02:58,248 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-20 19:02:58,249 INFO L471 AbstractCegarLoop]: Abstraction has 2494 states and 3766 transitions. [2024-11-20 19:02:58,249 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 21 states have (on average 2.9047619047619047) internal successors, (61), 16 states have internal predecessors, (61), 5 states have call successors, (7), 5 states have call predecessors, (7), 5 states have return successors, (5), 4 states have call predecessors, (5), 1 states have call successors, (5) [2024-11-20 19:02:58,249 INFO L276 IsEmpty]: Start isEmpty. Operand 2494 states and 3766 transitions. [2024-11-20 19:02:58,250 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2024-11-20 19:02:58,250 INFO L207 NwaCegarLoop]: Found error trace [2024-11-20 19:02:58,250 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, 1] [2024-11-20 19:02:58,256 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2024-11-20 19:02:58,450 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 [2024-11-20 19:02:58,451 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ackermannErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ackermannErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ackermannErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ackermannErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 5 more)] === [2024-11-20 19:02:58,451 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 19:02:58,451 INFO L85 PathProgramCache]: Analyzing trace with hash 1781931564, now seen corresponding path program 1 times [2024-11-20 19:02:58,451 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 19:02:58,451 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1095462640] [2024-11-20 19:02:58,452 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 19:02:58,452 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 19:02:58,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 19:02:58,477 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2024-11-20 19:02:58,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 19:02:58,489 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2024-11-20 19:02:58,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 19:02:58,502 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2024-11-20 19:02:58,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 19:02:58,503 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 24 proven. 5 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2024-11-20 19:02:58,504 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 19:02:58,504 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1095462640] [2024-11-20 19:02:58,504 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1095462640] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-20 19:02:58,504 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [360616480] [2024-11-20 19:02:58,504 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 19:02:58,504 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-20 19:02:58,504 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-20 19:02:58,508 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) [2024-11-20 19:02:58,509 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2024-11-20 19:02:58,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 19:02:58,545 INFO L255 TraceCheckSpWp]: Trace formula consists of 124 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-20 19:02:58,546 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-20 19:02:58,618 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 22 proven. 5 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2024-11-20 19:02:58,618 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-20 19:02:58,772 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 22 proven. 5 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2024-11-20 19:02:58,772 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [360616480] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-20 19:02:58,772 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-20 19:02:58,772 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 7, 7] total 12 [2024-11-20 19:02:58,772 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [642852316] [2024-11-20 19:02:58,772 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-20 19:02:58,773 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-11-20 19:02:58,773 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 19:02:58,773 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-11-20 19:02:58,773 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=99, Unknown=0, NotChecked=0, Total=132 [2024-11-20 19:02:58,773 INFO L87 Difference]: Start difference. First operand 2494 states and 3766 transitions. Second operand has 12 states, 12 states have (on average 4.0) internal successors, (48), 12 states have internal predecessors, (48), 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) [2024-11-20 19:02:59,085 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-20 19:02:59,086 INFO L93 Difference]: Finished difference Result 3517 states and 5520 transitions. [2024-11-20 19:02:59,088 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-20 19:02:59,088 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 4.0) internal successors, (48), 12 states have internal predecessors, (48), 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 44 [2024-11-20 19:02:59,088 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-20 19:02:59,100 INFO L225 Difference]: With dead ends: 3517 [2024-11-20 19:02:59,101 INFO L226 Difference]: Without dead ends: 1211 [2024-11-20 19:02:59,123 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 102 GetRequests, 86 SyntacticMatches, 3 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=60, Invalid=150, Unknown=0, NotChecked=0, Total=210 [2024-11-20 19:02:59,127 INFO L432 NwaCegarLoop]: 30 mSDtfsCounter, 71 mSDsluCounter, 77 mSDsCounter, 0 mSdLazyCounter, 116 mSolverCounterSat, 34 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 71 SdHoareTripleChecker+Valid, 107 SdHoareTripleChecker+Invalid, 150 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 34 IncrementalHoareTripleChecker+Valid, 116 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-20 19:02:59,128 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [71 Valid, 107 Invalid, 150 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [34 Valid, 116 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-20 19:02:59,129 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1211 states. [2024-11-20 19:02:59,355 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1211 to 1182. [2024-11-20 19:02:59,357 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1182 states, 881 states have (on average 1.112372304199773) internal successors, (980), 905 states have internal predecessors, (980), 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) [2024-11-20 19:02:59,368 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1182 states to 1182 states and 1525 transitions. [2024-11-20 19:02:59,369 INFO L78 Accepts]: Start accepts. Automaton has 1182 states and 1525 transitions. Word has length 44 [2024-11-20 19:02:59,369 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-20 19:02:59,370 INFO L471 AbstractCegarLoop]: Abstraction has 1182 states and 1525 transitions. [2024-11-20 19:02:59,370 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 4.0) internal successors, (48), 12 states have internal predecessors, (48), 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) [2024-11-20 19:02:59,371 INFO L276 IsEmpty]: Start isEmpty. Operand 1182 states and 1525 transitions. [2024-11-20 19:02:59,374 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2024-11-20 19:02:59,375 INFO L207 NwaCegarLoop]: Found error trace [2024-11-20 19:02:59,375 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, 1] [2024-11-20 19:02:59,382 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2024-11-20 19:02:59,575 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 [2024-11-20 19:02:59,575 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ackermannErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ackermannErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ackermannErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ackermannErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 5 more)] === [2024-11-20 19:02:59,576 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 19:02:59,576 INFO L85 PathProgramCache]: Analyzing trace with hash -603852535, now seen corresponding path program 1 times [2024-11-20 19:02:59,576 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 19:02:59,576 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1426379716] [2024-11-20 19:02:59,576 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 19:02:59,576 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 19:02:59,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 19:02:59,643 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2024-11-20 19:02:59,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 19:02:59,681 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2024-11-20 19:02:59,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 19:02:59,701 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-11-20 19:02:59,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 19:02:59,728 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2024-11-20 19:02:59,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 19:02:59,764 INFO L134 CoverageAnalysis]: Checked inductivity of 58 backedges. 21 proven. 16 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2024-11-20 19:02:59,764 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 19:02:59,765 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1426379716] [2024-11-20 19:02:59,765 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1426379716] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-20 19:02:59,765 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [335123002] [2024-11-20 19:02:59,765 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 19:02:59,765 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-20 19:02:59,765 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-20 19:02:59,769 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) [2024-11-20 19:02:59,770 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2024-11-20 19:02:59,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 19:02:59,804 INFO L255 TraceCheckSpWp]: Trace formula consists of 146 conjuncts, 15 conjuncts are in the unsatisfiable core [2024-11-20 19:02:59,805 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-20 19:02:59,840 INFO L134 CoverageAnalysis]: Checked inductivity of 58 backedges. 14 proven. 18 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2024-11-20 19:02:59,841 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-20 19:03:00,210 INFO L134 CoverageAnalysis]: Checked inductivity of 58 backedges. 18 proven. 19 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2024-11-20 19:03:00,211 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [335123002] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-20 19:03:00,211 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-20 19:03:00,211 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 11, 13] total 26 [2024-11-20 19:03:00,211 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1494193217] [2024-11-20 19:03:00,211 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-20 19:03:00,211 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2024-11-20 19:03:00,212 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 19:03:00,212 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2024-11-20 19:03:00,212 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=88, Invalid=614, Unknown=0, NotChecked=0, Total=702 [2024-11-20 19:03:00,212 INFO L87 Difference]: Start difference. First operand 1182 states and 1525 transitions. Second operand has 27 states, 26 states have (on average 2.230769230769231) internal successors, (58), 21 states have internal predecessors, (58), 5 states have call successors, (7), 3 states have call predecessors, (7), 8 states have return successors, (9), 8 states have call predecessors, (9), 3 states have call successors, (9) [2024-11-20 19:03:01,394 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-20 19:03:01,394 INFO L93 Difference]: Finished difference Result 3167 states and 5904 transitions. [2024-11-20 19:03:01,394 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 57 states. [2024-11-20 19:03:01,394 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 26 states have (on average 2.230769230769231) internal successors, (58), 21 states have internal predecessors, (58), 5 states have call successors, (7), 3 states have call predecessors, (7), 8 states have return successors, (9), 8 states have call predecessors, (9), 3 states have call successors, (9) Word has length 53 [2024-11-20 19:03:01,394 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-20 19:03:01,414 INFO L225 Difference]: With dead ends: 3167 [2024-11-20 19:03:01,414 INFO L226 Difference]: Without dead ends: 3161 [2024-11-20 19:03:01,417 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 178 GetRequests, 101 SyntacticMatches, 0 SemanticMatches, 77 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1687 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=1079, Invalid=5083, Unknown=0, NotChecked=0, Total=6162 [2024-11-20 19:03:01,418 INFO L432 NwaCegarLoop]: 23 mSDtfsCounter, 141 mSDsluCounter, 232 mSDsCounter, 0 mSdLazyCounter, 508 mSolverCounterSat, 194 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 153 SdHoareTripleChecker+Valid, 255 SdHoareTripleChecker+Invalid, 702 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 194 IncrementalHoareTripleChecker+Valid, 508 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-20 19:03:01,418 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [153 Valid, 255 Invalid, 702 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [194 Valid, 508 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-20 19:03:01,420 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3161 states. [2024-11-20 19:03:01,801 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3161 to 2249. [2024-11-20 19:03:01,805 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2249 states, 1552 states have (on average 1.0869845360824741) internal successors, (1687), 1580 states have internal predecessors, (1687), 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) [2024-11-20 19:03:01,814 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2249 states to 2249 states and 4695 transitions. [2024-11-20 19:03:01,817 INFO L78 Accepts]: Start accepts. Automaton has 2249 states and 4695 transitions. Word has length 53 [2024-11-20 19:03:01,817 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-20 19:03:01,817 INFO L471 AbstractCegarLoop]: Abstraction has 2249 states and 4695 transitions. [2024-11-20 19:03:01,817 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 26 states have (on average 2.230769230769231) internal successors, (58), 21 states have internal predecessors, (58), 5 states have call successors, (7), 3 states have call predecessors, (7), 8 states have return successors, (9), 8 states have call predecessors, (9), 3 states have call successors, (9) [2024-11-20 19:03:01,818 INFO L276 IsEmpty]: Start isEmpty. Operand 2249 states and 4695 transitions. [2024-11-20 19:03:01,820 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2024-11-20 19:03:01,821 INFO L207 NwaCegarLoop]: Found error trace [2024-11-20 19:03:01,821 INFO L215 NwaCegarLoop]: trace histogram [8, 8, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1] [2024-11-20 19:03:01,827 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Ended with exit code 0 [2024-11-20 19:03:02,025 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 [2024-11-20 19:03:02,025 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting ackermannErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ackermannErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ackermannErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ackermannErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 5 more)] === [2024-11-20 19:03:02,026 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 19:03:02,026 INFO L85 PathProgramCache]: Analyzing trace with hash 38844242, now seen corresponding path program 1 times [2024-11-20 19:03:02,026 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 19:03:02,026 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1661501042] [2024-11-20 19:03:02,026 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 19:03:02,026 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 19:03:02,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 19:03:02,191 INFO L134 CoverageAnalysis]: Checked inductivity of 120 backedges. 0 proven. 111 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2024-11-20 19:03:02,191 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 19:03:02,191 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1661501042] [2024-11-20 19:03:02,191 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1661501042] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-20 19:03:02,191 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1405261191] [2024-11-20 19:03:02,191 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 19:03:02,192 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-20 19:03:02,192 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-20 19:03:02,193 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) [2024-11-20 19:03:02,197 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2024-11-20 19:03:02,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 19:03:02,237 INFO L255 TraceCheckSpWp]: Trace formula consists of 150 conjuncts, 18 conjuncts are in the unsatisfiable core [2024-11-20 19:03:02,237 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-20 19:03:02,319 INFO L134 CoverageAnalysis]: Checked inductivity of 120 backedges. 0 proven. 111 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2024-11-20 19:03:02,319 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-20 19:03:02,470 INFO L134 CoverageAnalysis]: Checked inductivity of 120 backedges. 0 proven. 111 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2024-11-20 19:03:02,471 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1405261191] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-20 19:03:02,471 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-20 19:03:02,471 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12, 12] total 23 [2024-11-20 19:03:02,471 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [750005476] [2024-11-20 19:03:02,471 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-20 19:03:02,471 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2024-11-20 19:03:02,471 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 19:03:02,472 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2024-11-20 19:03:02,472 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=136, Invalid=416, Unknown=0, NotChecked=0, Total=552 [2024-11-20 19:03:02,472 INFO L87 Difference]: Start difference. First operand 2249 states and 4695 transitions. Second operand has 24 states, 23 states have (on average 3.652173913043478) internal successors, (84), 14 states have internal predecessors, (84), 10 states have call successors, (16), 10 states have call predecessors, (16), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-20 19:03:03,411 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-20 19:03:03,411 INFO L93 Difference]: Finished difference Result 6168 states and 13112 transitions. [2024-11-20 19:03:03,412 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2024-11-20 19:03:03,412 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 23 states have (on average 3.652173913043478) internal successors, (84), 14 states have internal predecessors, (84), 10 states have call successors, (16), 10 states have call predecessors, (16), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 57 [2024-11-20 19:03:03,412 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-20 19:03:03,448 INFO L225 Difference]: With dead ends: 6168 [2024-11-20 19:03:03,448 INFO L226 Difference]: Without dead ends: 6167 [2024-11-20 19:03:03,451 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 140 GetRequests, 108 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 180 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=311, Invalid=811, Unknown=0, NotChecked=0, Total=1122 [2024-11-20 19:03:03,452 INFO L432 NwaCegarLoop]: 30 mSDtfsCounter, 507 mSDsluCounter, 343 mSDsCounter, 0 mSdLazyCounter, 328 mSolverCounterSat, 125 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 510 SdHoareTripleChecker+Valid, 373 SdHoareTripleChecker+Invalid, 453 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 125 IncrementalHoareTripleChecker+Valid, 328 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-20 19:03:03,452 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [510 Valid, 373 Invalid, 453 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [125 Valid, 328 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-20 19:03:03,456 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6167 states. [2024-11-20 19:03:04,386 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6167 to 6083. [2024-11-20 19:03:04,396 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6083 states, 4222 states have (on average 1.0888204642349597) internal successors, (4597), 4304 states have internal predecessors, (4597), 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) [2024-11-20 19:03:04,427 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6083 states to 6083 states and 12753 transitions. [2024-11-20 19:03:04,431 INFO L78 Accepts]: Start accepts. Automaton has 6083 states and 12753 transitions. Word has length 57 [2024-11-20 19:03:04,431 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-20 19:03:04,431 INFO L471 AbstractCegarLoop]: Abstraction has 6083 states and 12753 transitions. [2024-11-20 19:03:04,432 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 23 states have (on average 3.652173913043478) internal successors, (84), 14 states have internal predecessors, (84), 10 states have call successors, (16), 10 states have call predecessors, (16), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-20 19:03:04,432 INFO L276 IsEmpty]: Start isEmpty. Operand 6083 states and 12753 transitions. [2024-11-20 19:03:04,433 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2024-11-20 19:03:04,433 INFO L207 NwaCegarLoop]: Found error trace [2024-11-20 19:03:04,433 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, 1] [2024-11-20 19:03:04,443 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2024-11-20 19:03:04,633 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 [2024-11-20 19:03:04,634 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting ackermannErr6ASSERT_VIOLATIONINTEGER_OVERFLOW === [ackermannErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ackermannErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ackermannErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 5 more)] === [2024-11-20 19:03:04,634 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 19:03:04,634 INFO L85 PathProgramCache]: Analyzing trace with hash -476681264, now seen corresponding path program 1 times [2024-11-20 19:03:04,634 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 19:03:04,635 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1126997158] [2024-11-20 19:03:04,635 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 19:03:04,635 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 19:03:04,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 19:03:04,692 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2024-11-20 19:03:04,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 19:03:04,733 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2024-11-20 19:03:04,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 19:03:04,751 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-11-20 19:03:04,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 19:03:04,775 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2024-11-20 19:03:04,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 19:03:04,796 INFO L134 CoverageAnalysis]: Checked inductivity of 63 backedges. 36 proven. 6 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2024-11-20 19:03:04,796 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 19:03:04,796 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1126997158] [2024-11-20 19:03:04,796 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1126997158] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-20 19:03:04,797 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [534314593] [2024-11-20 19:03:04,797 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 19:03:04,797 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-20 19:03:04,797 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-20 19:03:04,799 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) [2024-11-20 19:03:04,800 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2024-11-20 19:03:04,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 19:03:04,840 INFO L255 TraceCheckSpWp]: Trace formula consists of 147 conjuncts, 15 conjuncts are in the unsatisfiable core [2024-11-20 19:03:04,841 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-20 19:03:04,873 INFO L134 CoverageAnalysis]: Checked inductivity of 63 backedges. 27 proven. 10 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2024-11-20 19:03:04,873 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-20 19:03:05,262 INFO L134 CoverageAnalysis]: Checked inductivity of 63 backedges. 40 proven. 2 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2024-11-20 19:03:05,262 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [534314593] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-20 19:03:05,263 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-20 19:03:05,263 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 11, 13] total 26 [2024-11-20 19:03:05,263 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1154912806] [2024-11-20 19:03:05,263 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-20 19:03:05,263 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2024-11-20 19:03:05,263 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 19:03:05,264 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2024-11-20 19:03:05,265 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=94, Invalid=608, Unknown=0, NotChecked=0, Total=702 [2024-11-20 19:03:05,265 INFO L87 Difference]: Start difference. First operand 6083 states and 12753 transitions. Second operand has 27 states, 26 states have (on average 2.3846153846153846) internal successors, (62), 21 states have internal predecessors, (62), 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) [2024-11-20 19:03:09,238 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-20 19:03:09,239 INFO L93 Difference]: Finished difference Result 24358 states and 94287 transitions. [2024-11-20 19:03:09,239 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 57 states. [2024-11-20 19:03:09,239 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 26 states have (on average 2.3846153846153846) internal successors, (62), 21 states have internal predecessors, (62), 5 states have call successors, (7), 3 states have call predecessors, (7), 8 states have return successors, (9), 8 states have call predecessors, (9), 3 states have call successors, (9) Word has length 55 [2024-11-20 19:03:09,239 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-20 19:03:09,418 INFO L225 Difference]: With dead ends: 24358 [2024-11-20 19:03:09,418 INFO L226 Difference]: Without dead ends: 19150 [2024-11-20 19:03:09,527 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 181 GetRequests, 105 SyntacticMatches, 0 SemanticMatches, 76 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1239 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=1184, Invalid=4822, Unknown=0, NotChecked=0, Total=6006 [2024-11-20 19:03:09,528 INFO L432 NwaCegarLoop]: 39 mSDtfsCounter, 131 mSDsluCounter, 356 mSDsCounter, 0 mSdLazyCounter, 987 mSolverCounterSat, 120 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 131 SdHoareTripleChecker+Valid, 395 SdHoareTripleChecker+Invalid, 1107 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 120 IncrementalHoareTripleChecker+Valid, 987 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-20 19:03:09,528 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [131 Valid, 395 Invalid, 1107 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [120 Valid, 987 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-20 19:03:09,539 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19150 states. [2024-11-20 19:03:12,682 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19150 to 13376. [2024-11-20 19:03:12,720 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13376 states, 8766 states have (on average 1.0571526351813827) internal successors, (9267), 8809 states have internal predecessors, (9267), 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) [2024-11-20 19:03:12,869 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13376 states to 13376 states and 49119 transitions. [2024-11-20 19:03:12,879 INFO L78 Accepts]: Start accepts. Automaton has 13376 states and 49119 transitions. Word has length 55 [2024-11-20 19:03:12,880 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-20 19:03:12,880 INFO L471 AbstractCegarLoop]: Abstraction has 13376 states and 49119 transitions. [2024-11-20 19:03:12,881 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 26 states have (on average 2.3846153846153846) internal successors, (62), 21 states have internal predecessors, (62), 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) [2024-11-20 19:03:12,881 INFO L276 IsEmpty]: Start isEmpty. Operand 13376 states and 49119 transitions. [2024-11-20 19:03:12,882 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2024-11-20 19:03:12,882 INFO L207 NwaCegarLoop]: Found error trace [2024-11-20 19:03:12,882 INFO L215 NwaCegarLoop]: trace histogram [7, 7, 7, 7, 7, 6, 6, 6, 1, 1, 1, 1, 1, 1] [2024-11-20 19:03:12,888 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Ended with exit code 0 [2024-11-20 19:03:13,082 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 [2024-11-20 19:03:13,083 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting ackermannErr6ASSERT_VIOLATIONINTEGER_OVERFLOW === [ackermannErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ackermannErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ackermannErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 5 more)] === [2024-11-20 19:03:13,083 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 19:03:13,083 INFO L85 PathProgramCache]: Analyzing trace with hash 1608770754, now seen corresponding path program 2 times [2024-11-20 19:03:13,083 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 19:03:13,083 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1631181993] [2024-11-20 19:03:13,083 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 19:03:13,083 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 19:03:13,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 19:03:13,237 INFO L134 CoverageAnalysis]: Checked inductivity of 156 backedges. 0 proven. 156 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 19:03:13,238 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 19:03:13,238 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1631181993] [2024-11-20 19:03:13,238 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1631181993] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-20 19:03:13,238 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1592315830] [2024-11-20 19:03:13,238 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-20 19:03:13,239 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-20 19:03:13,239 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-20 19:03:13,240 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) [2024-11-20 19:03:13,241 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2024-11-20 19:03:13,278 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-20 19:03:13,278 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-20 19:03:13,279 INFO L255 TraceCheckSpWp]: Trace formula consists of 140 conjuncts, 16 conjuncts are in the unsatisfiable core [2024-11-20 19:03:13,280 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-20 19:03:13,351 INFO L134 CoverageAnalysis]: Checked inductivity of 156 backedges. 0 proven. 156 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 19:03:13,351 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-20 19:03:13,571 INFO L134 CoverageAnalysis]: Checked inductivity of 156 backedges. 0 proven. 156 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 19:03:13,571 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1592315830] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-20 19:03:13,571 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-20 19:03:13,571 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16, 16] total 31 [2024-11-20 19:03:13,571 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1020837379] [2024-11-20 19:03:13,571 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-20 19:03:13,572 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2024-11-20 19:03:13,572 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 19:03:13,572 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2024-11-20 19:03:13,572 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=244, Invalid=748, Unknown=0, NotChecked=0, Total=992 [2024-11-20 19:03:13,572 INFO L87 Difference]: Start difference. First operand 13376 states and 49119 transitions. Second operand has 32 states, 29 states have (on average 3.4827586206896552) internal successors, (101), 18 states have internal predecessors, (101), 14 states have call successors, (14), 14 states have call predecessors, (14), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-20 19:03:17,405 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-20 19:03:17,406 INFO L93 Difference]: Finished difference Result 20225 states and 73221 transitions. [2024-11-20 19:03:17,406 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2024-11-20 19:03:17,406 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 29 states have (on average 3.4827586206896552) internal successors, (101), 18 states have internal predecessors, (101), 14 states have call successors, (14), 14 states have call predecessors, (14), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 59 [2024-11-20 19:03:17,406 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-20 19:03:17,568 INFO L225 Difference]: With dead ends: 20225 [2024-11-20 19:03:17,568 INFO L226 Difference]: Without dead ends: 20224 [2024-11-20 19:03:17,582 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 146 GetRequests, 102 SyntacticMatches, 0 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 364 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=573, Invalid=1497, Unknown=0, NotChecked=0, Total=2070 [2024-11-20 19:03:17,583 INFO L432 NwaCegarLoop]: 24 mSDtfsCounter, 459 mSDsluCounter, 448 mSDsCounter, 0 mSdLazyCounter, 460 mSolverCounterSat, 121 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 474 SdHoareTripleChecker+Valid, 472 SdHoareTripleChecker+Invalid, 581 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 121 IncrementalHoareTripleChecker+Valid, 460 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-20 19:03:17,583 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [474 Valid, 472 Invalid, 581 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [121 Valid, 460 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-20 19:03:17,599 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20224 states. [2024-11-20 19:03:21,662 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20224 to 19840. [2024-11-20 19:03:21,700 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19840 states, 13022 states have (on average 1.0495315619720473) internal successors, (13667), 13129 states have internal predecessors, (13667), 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) [2024-11-20 19:03:22,008 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19840 states to 19840 states and 71215 transitions. [2024-11-20 19:03:22,022 INFO L78 Accepts]: Start accepts. Automaton has 19840 states and 71215 transitions. Word has length 59 [2024-11-20 19:03:22,022 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-20 19:03:22,022 INFO L471 AbstractCegarLoop]: Abstraction has 19840 states and 71215 transitions. [2024-11-20 19:03:22,023 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 29 states have (on average 3.4827586206896552) internal successors, (101), 18 states have internal predecessors, (101), 14 states have call successors, (14), 14 states have call predecessors, (14), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-20 19:03:22,023 INFO L276 IsEmpty]: Start isEmpty. Operand 19840 states and 71215 transitions. [2024-11-20 19:03:22,025 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2024-11-20 19:03:22,025 INFO L207 NwaCegarLoop]: Found error trace [2024-11-20 19:03:22,025 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, 1] [2024-11-20 19:03:22,035 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Ended with exit code 0 [2024-11-20 19:03:22,229 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 [2024-11-20 19:03:22,230 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting ackermannErr6ASSERT_VIOLATIONINTEGER_OVERFLOW === [ackermannErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ackermannErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ackermannErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 5 more)] === [2024-11-20 19:03:22,231 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 19:03:22,231 INFO L85 PathProgramCache]: Analyzing trace with hash -295397423, now seen corresponding path program 2 times [2024-11-20 19:03:22,231 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 19:03:22,231 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [146420072] [2024-11-20 19:03:22,231 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 19:03:22,231 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 19:03:22,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 19:03:22,349 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2024-11-20 19:03:22,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 19:03:22,406 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-11-20 19:03:22,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 19:03:22,450 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2024-11-20 19:03:22,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 19:03:22,480 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-11-20 19:03:22,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 19:03:22,514 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2024-11-20 19:03:22,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 19:03:22,545 INFO L134 CoverageAnalysis]: Checked inductivity of 163 backedges. 86 proven. 16 refuted. 0 times theorem prover too weak. 61 trivial. 0 not checked. [2024-11-20 19:03:22,545 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 19:03:22,545 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [146420072] [2024-11-20 19:03:22,546 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [146420072] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-20 19:03:22,546 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [828962549] [2024-11-20 19:03:22,546 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-20 19:03:22,546 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-20 19:03:22,546 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-20 19:03:22,549 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) [2024-11-20 19:03:22,550 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2024-11-20 19:03:22,601 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-20 19:03:22,602 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-20 19:03:22,603 INFO L255 TraceCheckSpWp]: Trace formula consists of 201 conjuncts, 19 conjuncts are in the unsatisfiable core [2024-11-20 19:03:22,604 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-20 19:03:22,656 INFO L134 CoverageAnalysis]: Checked inductivity of 163 backedges. 75 proven. 22 refuted. 0 times theorem prover too weak. 66 trivial. 0 not checked. [2024-11-20 19:03:22,656 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-20 19:03:23,376 INFO L134 CoverageAnalysis]: Checked inductivity of 163 backedges. 94 proven. 8 refuted. 0 times theorem prover too weak. 61 trivial. 0 not checked. [2024-11-20 19:03:23,376 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [828962549] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-20 19:03:23,376 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-20 19:03:23,376 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 14, 16] total 32 [2024-11-20 19:03:23,377 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1214436684] [2024-11-20 19:03:23,377 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-20 19:03:23,377 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2024-11-20 19:03:23,377 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 19:03:23,378 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2024-11-20 19:03:23,378 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=126, Invalid=930, Unknown=0, NotChecked=0, Total=1056 [2024-11-20 19:03:23,378 INFO L87 Difference]: Start difference. First operand 19840 states and 71215 transitions. Second operand has 33 states, 32 states have (on average 2.4375) internal successors, (78), 23 states have internal predecessors, (78), 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) [2024-11-20 19:03:26,304 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-20 19:03:26,304 INFO L93 Difference]: Finished difference Result 30265 states and 111648 transitions. [2024-11-20 19:03:26,304 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2024-11-20 19:03:26,305 INFO L78 Accepts]: Start accepts. Automaton has has 33 states, 32 states have (on average 2.4375) internal successors, (78), 23 states have internal predecessors, (78), 7 states have call successors, (9), 5 states have call predecessors, (9), 8 states have return successors, (11), 10 states have call predecessors, (11), 3 states have call successors, (11) Word has length 80 [2024-11-20 19:03:26,305 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-20 19:03:26,377 INFO L225 Difference]: With dead ends: 30265 [2024-11-20 19:03:26,377 INFO L226 Difference]: Without dead ends: 12260 [2024-11-20 19:03:27,014 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 213 GetRequests, 156 SyntacticMatches, 0 SemanticMatches, 57 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 540 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=608, Invalid=2814, Unknown=0, NotChecked=0, Total=3422 [2024-11-20 19:03:27,015 INFO L432 NwaCegarLoop]: 41 mSDtfsCounter, 141 mSDsluCounter, 360 mSDsCounter, 0 mSdLazyCounter, 774 mSolverCounterSat, 97 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 141 SdHoareTripleChecker+Valid, 401 SdHoareTripleChecker+Invalid, 871 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 97 IncrementalHoareTripleChecker+Valid, 774 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-20 19:03:27,015 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [141 Valid, 401 Invalid, 871 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [97 Valid, 774 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-20 19:03:27,020 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12260 states. [2024-11-20 19:03:28,734 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12260 to 11692. [2024-11-20 19:03:28,748 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11692 states, 8105 states have (on average 1.073781616286243) internal successors, (8703), 8384 states have internal predecessors, (8703), 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) [2024-11-20 19:03:28,870 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11692 states to 11692 states and 18776 transitions. [2024-11-20 19:03:28,878 INFO L78 Accepts]: Start accepts. Automaton has 11692 states and 18776 transitions. Word has length 80 [2024-11-20 19:03:28,878 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-20 19:03:28,879 INFO L471 AbstractCegarLoop]: Abstraction has 11692 states and 18776 transitions. [2024-11-20 19:03:28,879 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 33 states, 32 states have (on average 2.4375) internal successors, (78), 23 states have internal predecessors, (78), 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) [2024-11-20 19:03:28,879 INFO L276 IsEmpty]: Start isEmpty. Operand 11692 states and 18776 transitions. [2024-11-20 19:03:28,881 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2024-11-20 19:03:28,881 INFO L207 NwaCegarLoop]: Found error trace [2024-11-20 19:03:28,881 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, 1] [2024-11-20 19:03:28,890 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Ended with exit code 0 [2024-11-20 19:03:29,085 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 [2024-11-20 19:03:29,086 INFO L396 AbstractCegarLoop]: === Iteration 22 === Targeting ackermannErr6ASSERT_VIOLATIONINTEGER_OVERFLOW === [ackermannErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ackermannErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ackermannErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 5 more)] === [2024-11-20 19:03:29,086 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 19:03:29,086 INFO L85 PathProgramCache]: Analyzing trace with hash -1699922576, now seen corresponding path program 3 times [2024-11-20 19:03:29,086 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 19:03:29,086 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1542886416] [2024-11-20 19:03:29,086 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 19:03:29,086 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 19:03:29,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 19:03:29,203 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2024-11-20 19:03:29,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 19:03:29,225 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-11-20 19:03:29,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 19:03:29,258 INFO L134 CoverageAnalysis]: Checked inductivity of 144 backedges. 62 proven. 77 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-11-20 19:03:29,258 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 19:03:29,258 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1542886416] [2024-11-20 19:03:29,258 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1542886416] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-20 19:03:29,258 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [672572107] [2024-11-20 19:03:29,259 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-20 19:03:29,259 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-20 19:03:29,259 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-20 19:03:29,260 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) [2024-11-20 19:03:29,265 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2024-11-20 19:03:29,313 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 8 check-sat command(s) [2024-11-20 19:03:29,313 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-20 19:03:29,314 INFO L255 TraceCheckSpWp]: Trace formula consists of 167 conjuncts, 17 conjuncts are in the unsatisfiable core [2024-11-20 19:03:29,315 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-20 19:03:29,378 INFO L134 CoverageAnalysis]: Checked inductivity of 144 backedges. 60 proven. 79 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-11-20 19:03:29,379 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-20 19:03:29,666 INFO L134 CoverageAnalysis]: Checked inductivity of 144 backedges. 64 proven. 75 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-11-20 19:03:29,666 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [672572107] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-20 19:03:29,666 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-20 19:03:29,667 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16, 16] total 33 [2024-11-20 19:03:29,667 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1781445654] [2024-11-20 19:03:29,667 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-20 19:03:29,667 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2024-11-20 19:03:29,667 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 19:03:29,668 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2024-11-20 19:03:29,668 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=173, Invalid=949, Unknown=0, NotChecked=0, Total=1122 [2024-11-20 19:03:29,668 INFO L87 Difference]: Start difference. First operand 11692 states and 18776 transitions. Second operand has 34 states, 33 states have (on average 3.121212121212121) internal successors, (103), 22 states have internal predecessors, (103), 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) [2024-11-20 19:03:31,502 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-20 19:03:31,502 INFO L93 Difference]: Finished difference Result 12447 states and 19918 transitions. [2024-11-20 19:03:31,504 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2024-11-20 19:03:31,504 INFO L78 Accepts]: Start accepts. Automaton has has 34 states, 33 states have (on average 3.121212121212121) internal successors, (103), 22 states have internal predecessors, (103), 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 68 [2024-11-20 19:03:31,505 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-20 19:03:31,557 INFO L225 Difference]: With dead ends: 12447 [2024-11-20 19:03:31,557 INFO L226 Difference]: Without dead ends: 12446 [2024-11-20 19:03:31,561 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 176 GetRequests, 127 SyntacticMatches, 0 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 493 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=499, Invalid=2051, Unknown=0, NotChecked=0, Total=2550 [2024-11-20 19:03:31,562 INFO L432 NwaCegarLoop]: 34 mSDtfsCounter, 257 mSDsluCounter, 241 mSDsCounter, 0 mSdLazyCounter, 418 mSolverCounterSat, 202 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 257 SdHoareTripleChecker+Valid, 275 SdHoareTripleChecker+Invalid, 620 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 202 IncrementalHoareTripleChecker+Valid, 418 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-20 19:03:31,562 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [257 Valid, 275 Invalid, 620 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [202 Valid, 418 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-20 19:03:31,567 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12446 states. [2024-11-20 19:03:33,379 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12446 to 11800. [2024-11-20 19:03:33,390 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11800 states, 8177 states have (on average 1.0699523052464228) internal successors, (8749), 8456 states have internal predecessors, (8749), 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) [2024-11-20 19:03:33,441 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11800 states to 11800 states and 18916 transitions. [2024-11-20 19:03:33,449 INFO L78 Accepts]: Start accepts. Automaton has 11800 states and 18916 transitions. Word has length 68 [2024-11-20 19:03:33,449 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-20 19:03:33,450 INFO L471 AbstractCegarLoop]: Abstraction has 11800 states and 18916 transitions. [2024-11-20 19:03:33,450 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 33 states have (on average 3.121212121212121) internal successors, (103), 22 states have internal predecessors, (103), 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) [2024-11-20 19:03:33,450 INFO L276 IsEmpty]: Start isEmpty. Operand 11800 states and 18916 transitions. [2024-11-20 19:03:33,454 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2024-11-20 19:03:33,456 INFO L207 NwaCegarLoop]: Found error trace [2024-11-20 19:03:33,457 INFO L215 NwaCegarLoop]: trace histogram [9, 7, 5, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1] [2024-11-20 19:03:33,463 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Forceful destruction successful, exit code 0 [2024-11-20 19:03:33,657 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 [2024-11-20 19:03:33,658 INFO L396 AbstractCegarLoop]: === Iteration 23 === Targeting ackermannErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ackermannErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ackermannErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ackermannErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 5 more)] === [2024-11-20 19:03:33,658 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 19:03:33,658 INFO L85 PathProgramCache]: Analyzing trace with hash -444123128, now seen corresponding path program 2 times [2024-11-20 19:03:33,658 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 19:03:33,658 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [667553667] [2024-11-20 19:03:33,659 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 19:03:33,659 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 19:03:33,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 19:03:33,702 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2024-11-20 19:03:33,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 19:03:33,726 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-11-20 19:03:33,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 19:03:33,772 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2024-11-20 19:03:33,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 19:03:33,809 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2024-11-20 19:03:33,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 19:03:33,839 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-11-20 19:03:33,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 19:03:33,844 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2024-11-20 19:03:33,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 19:03:33,847 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2024-11-20 19:03:33,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 19:03:33,850 INFO L134 CoverageAnalysis]: Checked inductivity of 162 backedges. 83 proven. 28 refuted. 0 times theorem prover too weak. 51 trivial. 0 not checked. [2024-11-20 19:03:33,850 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 19:03:33,850 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [667553667] [2024-11-20 19:03:33,850 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [667553667] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-20 19:03:33,850 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [5715366] [2024-11-20 19:03:33,851 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-20 19:03:33,851 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-20 19:03:33,851 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-20 19:03:33,853 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) [2024-11-20 19:03:33,945 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2024-11-20 19:03:33,999 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-20 19:03:33,999 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-20 19:03:34,000 INFO L255 TraceCheckSpWp]: Trace formula consists of 212 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-11-20 19:03:34,001 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-20 19:03:34,073 INFO L134 CoverageAnalysis]: Checked inductivity of 162 backedges. 85 proven. 15 refuted. 0 times theorem prover too weak. 62 trivial. 0 not checked. [2024-11-20 19:03:34,073 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-20 19:03:34,347 INFO L134 CoverageAnalysis]: Checked inductivity of 162 backedges. 85 proven. 26 refuted. 0 times theorem prover too weak. 51 trivial. 0 not checked. [2024-11-20 19:03:34,348 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [5715366] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-20 19:03:34,348 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-20 19:03:34,348 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 6, 8] total 14 [2024-11-20 19:03:34,348 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1673273108] [2024-11-20 19:03:34,348 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-20 19:03:34,348 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-11-20 19:03:34,349 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 19:03:34,349 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-11-20 19:03:34,349 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=132, Unknown=0, NotChecked=0, Total=182 [2024-11-20 19:03:34,349 INFO L87 Difference]: Start difference. First operand 11800 states and 18916 transitions. Second operand has 14 states, 14 states have (on average 6.0) internal successors, (84), 14 states have internal predecessors, (84), 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) [2024-11-20 19:03:36,033 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-20 19:03:36,033 INFO L93 Difference]: Finished difference Result 22584 states and 40813 transitions. [2024-11-20 19:03:36,034 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-11-20 19:03:36,034 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 6.0) internal successors, (84), 14 states have internal predecessors, (84), 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 81 [2024-11-20 19:03:36,034 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-20 19:03:36,088 INFO L225 Difference]: With dead ends: 22584 [2024-11-20 19:03:36,089 INFO L226 Difference]: Without dead ends: 12984 [2024-11-20 19:03:36,137 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 185 GetRequests, 167 SyntacticMatches, 3 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 61 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=87, Invalid=185, Unknown=0, NotChecked=0, Total=272 [2024-11-20 19:03:36,138 INFO L432 NwaCegarLoop]: 32 mSDtfsCounter, 21 mSDsluCounter, 68 mSDsCounter, 0 mSdLazyCounter, 124 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 23 SdHoareTripleChecker+Valid, 100 SdHoareTripleChecker+Invalid, 139 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 124 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-20 19:03:36,138 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [23 Valid, 100 Invalid, 139 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 124 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-20 19:03:36,144 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12984 states. [2024-11-20 19:03:37,935 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12984 to 11794. [2024-11-20 19:03:37,945 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11794 states, 8174 states have (on average 1.0699779789576707) internal successors, (8746), 8453 states have internal predecessors, (8746), 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) [2024-11-20 19:03:37,980 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11794 states to 11794 states and 18830 transitions. [2024-11-20 19:03:37,989 INFO L78 Accepts]: Start accepts. Automaton has 11794 states and 18830 transitions. Word has length 81 [2024-11-20 19:03:37,989 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-20 19:03:37,989 INFO L471 AbstractCegarLoop]: Abstraction has 11794 states and 18830 transitions. [2024-11-20 19:03:37,990 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 6.0) internal successors, (84), 14 states have internal predecessors, (84), 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) [2024-11-20 19:03:37,990 INFO L276 IsEmpty]: Start isEmpty. Operand 11794 states and 18830 transitions. [2024-11-20 19:03:37,993 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2024-11-20 19:03:37,993 INFO L207 NwaCegarLoop]: Found error trace [2024-11-20 19:03:37,993 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, 1] [2024-11-20 19:03:37,999 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Forceful destruction successful, exit code 0 [2024-11-20 19:03:38,194 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 [2024-11-20 19:03:38,194 INFO L396 AbstractCegarLoop]: === Iteration 24 === Targeting ackermannErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ackermannErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ackermannErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ackermannErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 5 more)] === [2024-11-20 19:03:38,194 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 19:03:38,195 INFO L85 PathProgramCache]: Analyzing trace with hash -394691490, now seen corresponding path program 3 times [2024-11-20 19:03:38,195 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 19:03:38,195 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1970397871] [2024-11-20 19:03:38,195 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 19:03:38,195 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 19:03:38,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 19:03:38,246 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2024-11-20 19:03:38,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 19:03:38,291 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2024-11-20 19:03:38,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 19:03:38,320 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2024-11-20 19:03:38,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 19:03:38,356 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-11-20 19:03:38,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 19:03:38,383 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2024-11-20 19:03:38,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 19:03:38,402 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-11-20 19:03:38,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 19:03:38,420 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2024-11-20 19:03:38,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 19:03:38,423 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2024-11-20 19:03:38,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 19:03:38,431 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2024-11-20 19:03:38,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 19:03:38,435 INFO L134 CoverageAnalysis]: Checked inductivity of 266 backedges. 117 proven. 51 refuted. 0 times theorem prover too weak. 98 trivial. 0 not checked. [2024-11-20 19:03:38,435 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 19:03:38,435 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1970397871] [2024-11-20 19:03:38,435 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1970397871] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-20 19:03:38,435 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1241235154] [2024-11-20 19:03:38,435 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-20 19:03:38,435 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-20 19:03:38,436 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-20 19:03:38,438 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) [2024-11-20 19:03:38,442 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2024-11-20 19:03:38,501 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s) [2024-11-20 19:03:38,501 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-20 19:03:38,502 INFO L255 TraceCheckSpWp]: Trace formula consists of 226 conjuncts, 12 conjuncts are in the unsatisfiable core [2024-11-20 19:03:38,504 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-20 19:03:38,569 INFO L134 CoverageAnalysis]: Checked inductivity of 266 backedges. 153 proven. 26 refuted. 0 times theorem prover too weak. 87 trivial. 0 not checked. [2024-11-20 19:03:38,570 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-20 19:03:39,184 INFO L134 CoverageAnalysis]: Checked inductivity of 266 backedges. 123 proven. 57 refuted. 0 times theorem prover too weak. 86 trivial. 0 not checked. [2024-11-20 19:03:39,184 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1241235154] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-20 19:03:39,184 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-20 19:03:39,184 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 11] total 17 [2024-11-20 19:03:39,184 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [773101254] [2024-11-20 19:03:39,184 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-20 19:03:39,185 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2024-11-20 19:03:39,185 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 19:03:39,185 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2024-11-20 19:03:39,186 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=70, Invalid=202, Unknown=0, NotChecked=0, Total=272 [2024-11-20 19:03:39,186 INFO L87 Difference]: Start difference. First operand 11794 states and 18830 transitions. Second operand has 17 states, 17 states have (on average 4.9411764705882355) internal successors, (84), 17 states have internal predecessors, (84), 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) [2024-11-20 19:03:41,373 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-20 19:03:41,374 INFO L93 Difference]: Finished difference Result 24299 states and 49196 transitions. [2024-11-20 19:03:41,374 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-20 19:03:41,374 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 4.9411764705882355) internal successors, (84), 17 states have internal predecessors, (84), 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 100 [2024-11-20 19:03:41,374 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-20 19:03:41,479 INFO L225 Difference]: With dead ends: 24299 [2024-11-20 19:03:41,479 INFO L226 Difference]: Without dead ends: 14733 [2024-11-20 19:03:41,579 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 230 GetRequests, 207 SyntacticMatches, 6 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 88 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=98, Invalid=244, Unknown=0, NotChecked=0, Total=342 [2024-11-20 19:03:41,579 INFO L432 NwaCegarLoop]: 34 mSDtfsCounter, 51 mSDsluCounter, 130 mSDsCounter, 0 mSdLazyCounter, 200 mSolverCounterSat, 25 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 55 SdHoareTripleChecker+Valid, 164 SdHoareTripleChecker+Invalid, 225 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 25 IncrementalHoareTripleChecker+Valid, 200 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-20 19:03:41,580 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [55 Valid, 164 Invalid, 225 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [25 Valid, 200 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-20 19:03:41,592 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14733 states.