./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 84cfde4a Calling Ultimate with: /root/.sdkman/candidates/java/current/bin/java -Dosgi.configuration.area=/storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/recursive/Ackermann03.c -s /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate-clean/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-dev-84cfde4 [2024-10-11 21:12:05,214 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-10-11 21:12:05,293 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf [2024-10-11 21:12:05,300 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-10-11 21:12:05,303 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-10-11 21:12:05,331 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-10-11 21:12:05,331 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-10-11 21:12:05,332 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-10-11 21:12:05,332 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-10-11 21:12:05,333 INFO L153 SettingsManager]: * Use memory slicer=true [2024-10-11 21:12:05,334 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-10-11 21:12:05,334 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-10-11 21:12:05,335 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-10-11 21:12:05,337 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-10-11 21:12:05,337 INFO L153 SettingsManager]: * Use SBE=true [2024-10-11 21:12:05,337 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-10-11 21:12:05,338 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-10-11 21:12:05,340 INFO L153 SettingsManager]: * sizeof long=4 [2024-10-11 21:12:05,341 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-10-11 21:12:05,341 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-10-11 21:12:05,341 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-10-11 21:12:05,342 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-10-11 21:12:05,342 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-10-11 21:12:05,342 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-10-11 21:12:05,342 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-10-11 21:12:05,343 INFO L153 SettingsManager]: * Check absence of signed integer overflows=ASSERTandASSUME [2024-10-11 21:12:05,343 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-10-11 21:12:05,343 INFO L153 SettingsManager]: * sizeof long double=12 [2024-10-11 21:12:05,343 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-10-11 21:12:05,343 INFO L153 SettingsManager]: * Use constant arrays=true [2024-10-11 21:12:05,344 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-10-11 21:12:05,344 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-10-11 21:12:05,344 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-10-11 21:12:05,344 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-10-11 21:12:05,344 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-11 21:12:05,345 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-10-11 21:12:05,345 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-10-11 21:12:05,345 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-10-11 21:12:05,345 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-10-11 21:12:05,346 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-10-11 21:12:05,346 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-10-11 21:12:05,347 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-10-11 21:12:05,347 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-10-11 21:12:05,347 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-10-11 21:12:05,348 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-clean/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> c244f72db2906c596b7f122d769fc1464836d7d05d9227ee4269773d59ed10bd [2024-10-11 21:12:05,592 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-10-11 21:12:05,617 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-10-11 21:12:05,620 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-10-11 21:12:05,621 INFO L270 PluginConnector]: Initializing CDTParser... [2024-10-11 21:12:05,621 INFO L274 PluginConnector]: CDTParser initialized [2024-10-11 21:12:05,622 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/recursive/Ackermann03.c [2024-10-11 21:12:07,066 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-10-11 21:12:07,249 INFO L384 CDTParser]: Found 1 translation units. [2024-10-11 21:12:07,250 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/recursive/Ackermann03.c [2024-10-11 21:12:07,256 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/data/157f01a1f/2bd3e23b3c9741f9bb7f012147e18165/FLAG13157dea3 [2024-10-11 21:12:07,647 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/data/157f01a1f/2bd3e23b3c9741f9bb7f012147e18165 [2024-10-11 21:12:07,650 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-10-11 21:12:07,651 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-10-11 21:12:07,652 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-10-11 21:12:07,652 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-10-11 21:12:07,658 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-10-11 21:12:07,659 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.10 09:12:07" (1/1) ... [2024-10-11 21:12:07,660 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@495640b2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 09:12:07, skipping insertion in model container [2024-10-11 21:12:07,660 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.10 09:12:07" (1/1) ... [2024-10-11 21:12:07,679 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-10-11 21:12:07,828 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-11 21:12:07,837 INFO L200 MainTranslator]: Completed pre-run [2024-10-11 21:12:07,852 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-11 21:12:07,867 INFO L204 MainTranslator]: Completed translation [2024-10-11 21:12:07,868 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 09:12:07 WrapperNode [2024-10-11 21:12:07,868 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-10-11 21:12:07,869 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-10-11 21:12:07,869 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-10-11 21:12:07,869 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-10-11 21:12:07,876 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 09:12:07" (1/1) ... [2024-10-11 21:12:07,882 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 09:12:07" (1/1) ... [2024-10-11 21:12:07,899 INFO L138 Inliner]: procedures = 13, calls = 12, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 34 [2024-10-11 21:12:07,900 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-10-11 21:12:07,900 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-10-11 21:12:07,901 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-10-11 21:12:07,901 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-10-11 21:12:07,912 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 09:12:07" (1/1) ... [2024-10-11 21:12:07,913 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 09:12:07" (1/1) ... [2024-10-11 21:12:07,917 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 09:12:07" (1/1) ... [2024-10-11 21:12:07,935 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2024-10-11 21:12:07,936 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 09:12:07" (1/1) ... [2024-10-11 21:12:07,936 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 09:12:07" (1/1) ... [2024-10-11 21:12:07,942 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 09:12:07" (1/1) ... [2024-10-11 21:12:07,944 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 09:12:07" (1/1) ... [2024-10-11 21:12:07,944 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 09:12:07" (1/1) ... [2024-10-11 21:12:07,946 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 09:12:07" (1/1) ... [2024-10-11 21:12:07,951 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-10-11 21:12:07,951 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-10-11 21:12:07,952 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-10-11 21:12:07,952 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-10-11 21:12:07,953 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 09:12:07" (1/1) ... [2024-10-11 21:12:07,964 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-11 21:12:07,975 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-11 21:12:07,988 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-10-11 21:12:07,991 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-10-11 21:12:08,038 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-10-11 21:12:08,038 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-10-11 21:12:08,038 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-10-11 21:12:08,038 INFO L130 BoogieDeclarations]: Found specification of procedure ackermann [2024-10-11 21:12:08,038 INFO L138 BoogieDeclarations]: Found implementation of procedure ackermann [2024-10-11 21:12:08,039 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-10-11 21:12:08,104 INFO L238 CfgBuilder]: Building ICFG [2024-10-11 21:12:08,106 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-10-11 21:12:08,253 INFO L? ?]: Removed 21 outVars from TransFormulas that were not future-live. [2024-10-11 21:12:08,253 INFO L287 CfgBuilder]: Performing block encoding [2024-10-11 21:12:08,281 INFO L309 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-10-11 21:12:08,282 INFO L314 CfgBuilder]: Removed 0 assume(true) statements. [2024-10-11 21:12:08,282 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.10 09:12:08 BoogieIcfgContainer [2024-10-11 21:12:08,282 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-10-11 21:12:08,284 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-10-11 21:12:08,284 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-10-11 21:12:08,291 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-10-11 21:12:08,291 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 11.10 09:12:07" (1/3) ... [2024-10-11 21:12:08,292 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@223d29fe and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.10 09:12:08, skipping insertion in model container [2024-10-11 21:12:08,293 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 09:12:07" (2/3) ... [2024-10-11 21:12:08,293 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@223d29fe and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.10 09:12:08, skipping insertion in model container [2024-10-11 21:12:08,294 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.10 09:12:08" (3/3) ... [2024-10-11 21:12:08,295 INFO L112 eAbstractionObserver]: Analyzing ICFG Ackermann03.c [2024-10-11 21:12:08,311 INFO L209 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-10-11 21:12:08,312 INFO L149 ceAbstractionStarter]: Applying trace abstraction to program that has 8 error locations. [2024-10-11 21:12:08,376 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-10-11 21:12:08,381 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;@19b05113, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-10-11 21:12:08,382 INFO L334 AbstractCegarLoop]: Starting to check reachability of 8 error locations. [2024-10-11 21:12:08,386 INFO L276 IsEmpty]: Start isEmpty. Operand has 35 states, 21 states have (on average 1.619047619047619) internal successors, (34), 29 states have internal predecessors, (34), 4 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2024-10-11 21:12:08,398 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2024-10-11 21:12:08,398 INFO L207 NwaCegarLoop]: Found error trace [2024-10-11 21:12:08,399 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2024-10-11 21:12:08,400 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ackermannErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ackermannErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ackermannErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ackermannErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 5 more)] === [2024-10-11 21:12:08,409 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 21:12:08,409 INFO L85 PathProgramCache]: Analyzing trace with hash -2118177911, now seen corresponding path program 1 times [2024-10-11 21:12:08,418 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 21:12:08,419 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [703676247] [2024-10-11 21:12:08,419 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 21:12:08,419 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 21:12:08,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 21:12:08,637 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 21:12:08,640 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 21:12:08,640 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [703676247] [2024-10-11 21:12:08,641 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [703676247] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 21:12:08,641 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 21:12:08,641 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-10-11 21:12:08,643 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1211475163] [2024-10-11 21:12:08,645 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 21:12:08,649 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-11 21:12:08,650 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 21:12:08,673 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-11 21:12:08,674 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-10-11 21:12:08,676 INFO L87 Difference]: Start difference. First operand has 35 states, 21 states have (on average 1.619047619047619) internal successors, (34), 29 states have internal predecessors, (34), 4 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) Second operand has 5 states, 3 states have (on average 2.0) internal successors, (6), 4 states have internal predecessors, (6), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 21:12:08,825 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-11 21:12:08,826 INFO L93 Difference]: Finished difference Result 66 states and 78 transitions. [2024-10-11 21:12:08,827 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-11 21:12:08,828 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 3 states have (on average 2.0) internal successors, (6), 4 states have internal predecessors, (6), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 7 [2024-10-11 21:12:08,829 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-11 21:12:08,836 INFO L225 Difference]: With dead ends: 66 [2024-10-11 21:12:08,838 INFO L226 Difference]: Without dead ends: 58 [2024-10-11 21:12:08,841 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-10-11 21:12:08,845 INFO L432 NwaCegarLoop]: 29 mSDtfsCounter, 36 mSDsluCounter, 76 mSDsCounter, 0 mSdLazyCounter, 72 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 38 SdHoareTripleChecker+Valid, 105 SdHoareTripleChecker+Invalid, 79 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 72 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-11 21:12:08,848 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [38 Valid, 105 Invalid, 79 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 72 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-11 21:12:08,865 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58 states. [2024-10-11 21:12:08,889 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58 to 50. [2024-10-11 21:12:08,890 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 50 states, 33 states have (on average 1.5454545454545454) internal successors, (51), 41 states have internal predecessors, (51), 7 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2024-10-11 21:12:08,895 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 64 transitions. [2024-10-11 21:12:08,896 INFO L78 Accepts]: Start accepts. Automaton has 50 states and 64 transitions. Word has length 7 [2024-10-11 21:12:08,896 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-11 21:12:08,897 INFO L471 AbstractCegarLoop]: Abstraction has 50 states and 64 transitions. [2024-10-11 21:12:08,897 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 3 states have (on average 2.0) internal successors, (6), 4 states have internal predecessors, (6), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 21:12:08,897 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 64 transitions. [2024-10-11 21:12:08,897 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2024-10-11 21:12:08,897 INFO L207 NwaCegarLoop]: Found error trace [2024-10-11 21:12:08,897 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 21:12:08,898 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-10-11 21:12:08,898 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ackermannErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ackermannErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ackermannErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ackermannErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 5 more)] === [2024-10-11 21:12:08,900 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 21:12:08,900 INFO L85 PathProgramCache]: Analyzing trace with hash -1239000740, now seen corresponding path program 1 times [2024-10-11 21:12:08,900 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 21:12:08,901 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [503788420] [2024-10-11 21:12:08,901 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 21:12:08,901 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 21:12:08,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 21:12:09,002 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 21:12:09,003 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 21:12:09,003 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [503788420] [2024-10-11 21:12:09,003 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [503788420] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 21:12:09,004 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 21:12:09,004 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-10-11 21:12:09,004 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1578450587] [2024-10-11 21:12:09,004 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 21:12:09,005 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-11 21:12:09,006 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 21:12:09,006 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-11 21:12:09,007 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-10-11 21:12:09,008 INFO L87 Difference]: Start difference. First operand 50 states and 64 transitions. Second operand has 5 states, 4 states have (on average 1.75) internal successors, (7), 4 states have internal predecessors, (7), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 21:12:09,108 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-11 21:12:09,108 INFO L93 Difference]: Finished difference Result 100 states and 128 transitions. [2024-10-11 21:12:09,109 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-11 21:12:09,109 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 1.75) internal successors, (7), 4 states have internal predecessors, (7), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8 [2024-10-11 21:12:09,109 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-11 21:12:09,111 INFO L225 Difference]: With dead ends: 100 [2024-10-11 21:12:09,111 INFO L226 Difference]: Without dead ends: 92 [2024-10-11 21:12:09,112 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-10-11 21:12:09,113 INFO L432 NwaCegarLoop]: 25 mSDtfsCounter, 36 mSDsluCounter, 69 mSDsCounter, 0 mSdLazyCounter, 47 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 36 SdHoareTripleChecker+Valid, 94 SdHoareTripleChecker+Invalid, 55 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 47 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-11 21:12:09,113 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [36 Valid, 94 Invalid, 55 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 47 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-11 21:12:09,114 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 92 states. [2024-10-11 21:12:09,134 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 92 to 84. [2024-10-11 21:12:09,137 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 84 states, 60 states have (on average 1.5166666666666666) internal successors, (91), 69 states have internal predecessors, (91), 13 states have call successors, (13), 4 states have call predecessors, (13), 3 states have return successors, (10), 10 states have call predecessors, (10), 10 states have call successors, (10) [2024-10-11 21:12:09,140 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 84 states to 84 states and 114 transitions. [2024-10-11 21:12:09,144 INFO L78 Accepts]: Start accepts. Automaton has 84 states and 114 transitions. Word has length 8 [2024-10-11 21:12:09,145 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-11 21:12:09,145 INFO L471 AbstractCegarLoop]: Abstraction has 84 states and 114 transitions. [2024-10-11 21:12:09,145 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 1.75) internal successors, (7), 4 states have internal predecessors, (7), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 21:12:09,146 INFO L276 IsEmpty]: Start isEmpty. Operand 84 states and 114 transitions. [2024-10-11 21:12:09,146 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2024-10-11 21:12:09,146 INFO L207 NwaCegarLoop]: Found error trace [2024-10-11 21:12:09,146 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 21:12:09,146 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-10-11 21:12:09,147 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ackermannErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ackermannErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ackermannErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ackermannErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 5 more)] === [2024-10-11 21:12:09,147 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 21:12:09,147 INFO L85 PathProgramCache]: Analyzing trace with hash -1239005737, now seen corresponding path program 1 times [2024-10-11 21:12:09,148 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 21:12:09,148 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [798456177] [2024-10-11 21:12:09,149 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 21:12:09,149 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 21:12:09,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 21:12:09,249 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 21:12:09,249 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 21:12:09,249 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [798456177] [2024-10-11 21:12:09,249 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [798456177] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 21:12:09,250 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 21:12:09,250 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-10-11 21:12:09,250 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1153431098] [2024-10-11 21:12:09,250 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 21:12:09,250 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-11 21:12:09,251 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 21:12:09,251 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-11 21:12:09,251 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-10-11 21:12:09,252 INFO L87 Difference]: Start difference. First operand 84 states and 114 transitions. Second operand has 5 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 4 states have internal predecessors, (7), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 21:12:09,447 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-11 21:12:09,448 INFO L93 Difference]: Finished difference Result 117 states and 156 transitions. [2024-10-11 21:12:09,448 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-11 21:12:09,448 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 4 states have internal predecessors, (7), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8 [2024-10-11 21:12:09,448 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-11 21:12:09,452 INFO L225 Difference]: With dead ends: 117 [2024-10-11 21:12:09,452 INFO L226 Difference]: Without dead ends: 113 [2024-10-11 21:12:09,454 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-10-11 21:12:09,455 INFO L432 NwaCegarLoop]: 25 mSDtfsCounter, 34 mSDsluCounter, 68 mSDsCounter, 0 mSdLazyCounter, 61 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 35 SdHoareTripleChecker+Valid, 93 SdHoareTripleChecker+Invalid, 69 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 61 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-11 21:12:09,456 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [35 Valid, 93 Invalid, 69 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 61 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-11 21:12:09,457 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 113 states. [2024-10-11 21:12:09,474 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 113 to 101. [2024-10-11 21:12:09,477 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 101 states, 73 states have (on average 1.452054794520548) internal successors, (106), 82 states have internal predecessors, (106), 16 states have call successors, (16), 5 states have call predecessors, (16), 4 states have return successors, (13), 13 states have call predecessors, (13), 13 states have call successors, (13) [2024-10-11 21:12:09,478 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 101 states to 101 states and 135 transitions. [2024-10-11 21:12:09,478 INFO L78 Accepts]: Start accepts. Automaton has 101 states and 135 transitions. Word has length 8 [2024-10-11 21:12:09,478 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-11 21:12:09,479 INFO L471 AbstractCegarLoop]: Abstraction has 101 states and 135 transitions. [2024-10-11 21:12:09,479 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 4 states have internal predecessors, (7), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 21:12:09,479 INFO L276 IsEmpty]: Start isEmpty. Operand 101 states and 135 transitions. [2024-10-11 21:12:09,479 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2024-10-11 21:12:09,479 INFO L207 NwaCegarLoop]: Found error trace [2024-10-11 21:12:09,479 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 21:12:09,479 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-10-11 21:12:09,480 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ackermannErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ackermannErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ackermannErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ackermannErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 5 more)] === [2024-10-11 21:12:09,484 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 21:12:09,485 INFO L85 PathProgramCache]: Analyzing trace with hash 245682796, now seen corresponding path program 1 times [2024-10-11 21:12:09,485 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 21:12:09,485 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1646338988] [2024-10-11 21:12:09,485 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 21:12:09,485 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 21:12:09,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 21:12:09,537 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 21:12:09,538 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 21:12:09,538 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1646338988] [2024-10-11 21:12:09,538 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1646338988] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 21:12:09,538 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 21:12:09,538 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-10-11 21:12:09,538 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [103384718] [2024-10-11 21:12:09,538 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 21:12:09,539 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-11 21:12:09,539 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 21:12:09,539 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-11 21:12:09,539 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-10-11 21:12:09,539 INFO L87 Difference]: Start difference. First operand 101 states and 135 transitions. Second operand has 5 states, 4 states have (on average 2.0) internal successors, (8), 4 states have internal predecessors, (8), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 21:12:09,611 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-11 21:12:09,611 INFO L93 Difference]: Finished difference Result 109 states and 152 transitions. [2024-10-11 21:12:09,612 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-11 21:12:09,613 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 2.0) internal successors, (8), 4 states have internal predecessors, (8), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 9 [2024-10-11 21:12:09,613 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-11 21:12:09,614 INFO L225 Difference]: With dead ends: 109 [2024-10-11 21:12:09,614 INFO L226 Difference]: Without dead ends: 107 [2024-10-11 21:12:09,614 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-10-11 21:12:09,617 INFO L432 NwaCegarLoop]: 21 mSDtfsCounter, 35 mSDsluCounter, 26 mSDsCounter, 0 mSdLazyCounter, 41 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 35 SdHoareTripleChecker+Valid, 47 SdHoareTripleChecker+Invalid, 53 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 41 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-11 21:12:09,618 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [35 Valid, 47 Invalid, 53 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 41 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-11 21:12:09,619 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 107 states. [2024-10-11 21:12:09,633 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 107 to 99. [2024-10-11 21:12:09,633 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 99 states, 73 states have (on average 1.3150684931506849) internal successors, (96), 80 states have internal predecessors, (96), 16 states have call successors, (16), 5 states have call predecessors, (16), 4 states have return successors, (13), 13 states have call predecessors, (13), 13 states have call successors, (13) [2024-10-11 21:12:09,634 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 99 states to 99 states and 125 transitions. [2024-10-11 21:12:09,635 INFO L78 Accepts]: Start accepts. Automaton has 99 states and 125 transitions. Word has length 9 [2024-10-11 21:12:09,635 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-11 21:12:09,635 INFO L471 AbstractCegarLoop]: Abstraction has 99 states and 125 transitions. [2024-10-11 21:12:09,635 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 2.0) internal successors, (8), 4 states have internal predecessors, (8), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 21:12:09,635 INFO L276 IsEmpty]: Start isEmpty. Operand 99 states and 125 transitions. [2024-10-11 21:12:09,636 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2024-10-11 21:12:09,636 INFO L207 NwaCegarLoop]: Found error trace [2024-10-11 21:12:09,636 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 21:12:09,636 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-10-11 21:12:09,637 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ackermannErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ackermannErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ackermannErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ackermannErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 5 more)] === [2024-10-11 21:12:09,637 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 21:12:09,637 INFO L85 PathProgramCache]: Analyzing trace with hash -1896410727, now seen corresponding path program 1 times [2024-10-11 21:12:09,637 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 21:12:09,638 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1295987744] [2024-10-11 21:12:09,638 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 21:12:09,638 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 21:12:09,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 21:12:09,701 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 21:12:09,702 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 21:12:09,702 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1295987744] [2024-10-11 21:12:09,702 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1295987744] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 21:12:09,702 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 21:12:09,702 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-10-11 21:12:09,702 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [409407775] [2024-10-11 21:12:09,703 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 21:12:09,703 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-11 21:12:09,703 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 21:12:09,704 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-11 21:12:09,704 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-11 21:12:09,704 INFO L87 Difference]: Start difference. First operand 99 states and 125 transitions. Second operand has 4 states, 4 states have (on average 3.0) internal successors, (12), 3 states have internal predecessors, (12), 1 states have call successors, (2), 2 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 21:12:09,766 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-11 21:12:09,767 INFO L93 Difference]: Finished difference Result 169 states and 224 transitions. [2024-10-11 21:12:09,767 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-11 21:12:09,767 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 3.0) internal successors, (12), 3 states have internal predecessors, (12), 1 states have call successors, (2), 2 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 14 [2024-10-11 21:12:09,767 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-11 21:12:09,768 INFO L225 Difference]: With dead ends: 169 [2024-10-11 21:12:09,769 INFO L226 Difference]: Without dead ends: 98 [2024-10-11 21:12:09,771 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-10-11 21:12:09,774 INFO L432 NwaCegarLoop]: 37 mSDtfsCounter, 25 mSDsluCounter, 46 mSDsCounter, 0 mSdLazyCounter, 34 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 25 SdHoareTripleChecker+Valid, 83 SdHoareTripleChecker+Invalid, 38 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 34 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-10-11 21:12:09,775 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [25 Valid, 83 Invalid, 38 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 34 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-11 21:12:09,776 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 98 states. [2024-10-11 21:12:09,785 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 98 to 95. [2024-10-11 21:12:09,786 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 95 states, 70 states have (on average 1.3) internal successors, (91), 77 states have internal predecessors, (91), 15 states have call successors, (15), 5 states have call predecessors, (15), 4 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) [2024-10-11 21:12:09,787 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 95 states to 95 states and 118 transitions. [2024-10-11 21:12:09,787 INFO L78 Accepts]: Start accepts. Automaton has 95 states and 118 transitions. Word has length 14 [2024-10-11 21:12:09,788 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-11 21:12:09,788 INFO L471 AbstractCegarLoop]: Abstraction has 95 states and 118 transitions. [2024-10-11 21:12:09,788 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 3.0) internal successors, (12), 3 states have internal predecessors, (12), 1 states have call successors, (2), 2 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 21:12:09,788 INFO L276 IsEmpty]: Start isEmpty. Operand 95 states and 118 transitions. [2024-10-11 21:12:09,789 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2024-10-11 21:12:09,789 INFO L207 NwaCegarLoop]: Found error trace [2024-10-11 21:12:09,789 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 21:12:09,789 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-10-11 21:12:09,789 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ackermannErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ackermannErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ackermannErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ackermannErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 5 more)] === [2024-10-11 21:12:09,790 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 21:12:09,790 INFO L85 PathProgramCache]: Analyzing trace with hash -1896410503, now seen corresponding path program 1 times [2024-10-11 21:12:09,790 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 21:12:09,790 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1783832813] [2024-10-11 21:12:09,791 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 21:12:09,791 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 21:12:09,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 21:12:09,882 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 21:12:09,883 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 21:12:09,883 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1783832813] [2024-10-11 21:12:09,883 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1783832813] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-11 21:12:09,883 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [531083850] [2024-10-11 21:12:09,883 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 21:12:09,884 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 21:12:09,884 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-11 21:12:09,886 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-11 21:12:09,887 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-10-11 21:12:09,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 21:12:09,934 INFO L255 TraceCheckSpWp]: Trace formula consists of 57 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-10-11 21:12:09,938 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 21:12:10,009 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 21:12:10,010 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-11 21:12:10,100 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 21:12:10,101 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [531083850] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-11 21:12:10,101 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-11 21:12:10,101 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 11 [2024-10-11 21:12:10,101 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1380970865] [2024-10-11 21:12:10,101 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-11 21:12:10,102 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-10-11 21:12:10,102 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 21:12:10,102 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-10-11 21:12:10,102 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=98, Unknown=0, NotChecked=0, Total=132 [2024-10-11 21:12:10,102 INFO L87 Difference]: Start difference. First operand 95 states and 118 transitions. Second operand has 12 states, 11 states have (on average 2.090909090909091) internal successors, (23), 8 states have internal predecessors, (23), 4 states have call successors, (4), 4 states have call predecessors, (4), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 21:12:10,413 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-11 21:12:10,413 INFO L93 Difference]: Finished difference Result 275 states and 358 transitions. [2024-10-11 21:12:10,413 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-10-11 21:12:10,414 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 2.090909090909091) internal successors, (23), 8 states have internal predecessors, (23), 4 states have call successors, (4), 4 states have call predecessors, (4), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 14 [2024-10-11 21:12:10,414 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-11 21:12:10,416 INFO L225 Difference]: With dead ends: 275 [2024-10-11 21:12:10,416 INFO L226 Difference]: Without dead ends: 273 [2024-10-11 21:12:10,417 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=68, Invalid=172, Unknown=0, NotChecked=0, Total=240 [2024-10-11 21:12:10,418 INFO L432 NwaCegarLoop]: 29 mSDtfsCounter, 168 mSDsluCounter, 182 mSDsCounter, 0 mSdLazyCounter, 179 mSolverCounterSat, 44 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 171 SdHoareTripleChecker+Valid, 211 SdHoareTripleChecker+Invalid, 223 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 44 IncrementalHoareTripleChecker+Valid, 179 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-10-11 21:12:10,418 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [171 Valid, 211 Invalid, 223 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [44 Valid, 179 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-10-11 21:12:10,441 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 273 states. [2024-10-11 21:12:10,487 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 273 to 235. [2024-10-11 21:12:10,488 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 235 states, 181 states have (on average 1.2651933701657458) internal successors, (229), 188 states have internal predecessors, (229), 36 states have call successors, (36), 13 states have call predecessors, (36), 12 states have return successors, (33), 33 states have call predecessors, (33), 33 states have call successors, (33) [2024-10-11 21:12:10,491 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 235 states to 235 states and 298 transitions. [2024-10-11 21:12:10,491 INFO L78 Accepts]: Start accepts. Automaton has 235 states and 298 transitions. Word has length 14 [2024-10-11 21:12:10,491 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-11 21:12:10,492 INFO L471 AbstractCegarLoop]: Abstraction has 235 states and 298 transitions. [2024-10-11 21:12:10,492 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 2.090909090909091) internal successors, (23), 8 states have internal predecessors, (23), 4 states have call successors, (4), 4 states have call predecessors, (4), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 21:12:10,492 INFO L276 IsEmpty]: Start isEmpty. Operand 235 states and 298 transitions. [2024-10-11 21:12:10,492 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2024-10-11 21:12:10,493 INFO L207 NwaCegarLoop]: Found error trace [2024-10-11 21:12:10,493 INFO L215 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 21:12:10,515 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-10-11 21:12:10,696 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,2 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 21:12:10,697 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ackermannErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ackermannErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ackermannErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ackermannErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 5 more)] === [2024-10-11 21:12:10,698 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 21:12:10,698 INFO L85 PathProgramCache]: Analyzing trace with hash -1750564749, now seen corresponding path program 1 times [2024-10-11 21:12:10,698 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 21:12:10,698 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [921326558] [2024-10-11 21:12:10,698 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 21:12:10,698 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 21:12:10,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 21:12:10,783 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 21:12:10,783 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 21:12:10,784 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [921326558] [2024-10-11 21:12:10,784 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [921326558] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-11 21:12:10,784 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [538797642] [2024-10-11 21:12:10,784 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 21:12:10,784 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 21:12:10,785 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-11 21:12:10,786 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-11 21:12:10,788 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-10-11 21:12:10,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 21:12:10,824 INFO L255 TraceCheckSpWp]: Trace formula consists of 58 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-10-11 21:12:10,825 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 21:12:10,855 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 21:12:10,855 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-11 21:12:10,939 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 21:12:10,939 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [538797642] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-11 21:12:10,939 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-11 21:12:10,939 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 11 [2024-10-11 21:12:10,940 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2074730256] [2024-10-11 21:12:10,940 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-11 21:12:10,940 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-10-11 21:12:10,940 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 21:12:10,941 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-10-11 21:12:10,941 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=98, Unknown=0, NotChecked=0, Total=132 [2024-10-11 21:12:10,941 INFO L87 Difference]: Start difference. First operand 235 states and 298 transitions. Second operand has 12 states, 9 states have (on average 2.6666666666666665) internal successors, (24), 8 states have internal predecessors, (24), 4 states have call successors, (4), 4 states have call predecessors, (4), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 21:12:11,215 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-11 21:12:11,215 INFO L93 Difference]: Finished difference Result 497 states and 668 transitions. [2024-10-11 21:12:11,216 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-10-11 21:12:11,216 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 9 states have (on average 2.6666666666666665) internal successors, (24), 8 states have internal predecessors, (24), 4 states have call successors, (4), 4 states have call predecessors, (4), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 15 [2024-10-11 21:12:11,217 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-11 21:12:11,224 INFO L225 Difference]: With dead ends: 497 [2024-10-11 21:12:11,224 INFO L226 Difference]: Without dead ends: 495 [2024-10-11 21:12:11,225 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=77, Invalid=195, Unknown=0, NotChecked=0, Total=272 [2024-10-11 21:12:11,225 INFO L432 NwaCegarLoop]: 21 mSDtfsCounter, 144 mSDsluCounter, 120 mSDsCounter, 0 mSdLazyCounter, 164 mSolverCounterSat, 36 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 149 SdHoareTripleChecker+Valid, 141 SdHoareTripleChecker+Invalid, 200 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 36 IncrementalHoareTripleChecker+Valid, 164 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-10-11 21:12:11,226 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [149 Valid, 141 Invalid, 200 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [36 Valid, 164 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-10-11 21:12:11,227 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 495 states. [2024-10-11 21:12:11,283 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 495 to 444. [2024-10-11 21:12:11,286 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 444 states, 346 states have (on average 1.2283236994219653) internal successors, (425), 353 states have internal predecessors, (425), 69 states have call successors, (69), 24 states have call predecessors, (69), 23 states have return successors, (66), 66 states have call predecessors, (66), 66 states have call successors, (66) [2024-10-11 21:12:11,289 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 444 states to 444 states and 560 transitions. [2024-10-11 21:12:11,291 INFO L78 Accepts]: Start accepts. Automaton has 444 states and 560 transitions. Word has length 15 [2024-10-11 21:12:11,291 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-11 21:12:11,291 INFO L471 AbstractCegarLoop]: Abstraction has 444 states and 560 transitions. [2024-10-11 21:12:11,291 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 9 states have (on average 2.6666666666666665) internal successors, (24), 8 states have internal predecessors, (24), 4 states have call successors, (4), 4 states have call predecessors, (4), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 21:12:11,292 INFO L276 IsEmpty]: Start isEmpty. Operand 444 states and 560 transitions. [2024-10-11 21:12:11,293 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2024-10-11 21:12:11,293 INFO L207 NwaCegarLoop]: Found error trace [2024-10-11 21:12:11,294 INFO L215 NwaCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 21:12:11,311 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-10-11 21:12:11,497 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,3 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 21:12:11,498 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ackermannErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ackermannErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ackermannErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ackermannErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 5 more)] === [2024-10-11 21:12:11,498 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 21:12:11,498 INFO L85 PathProgramCache]: Analyzing trace with hash 244799614, now seen corresponding path program 1 times [2024-10-11 21:12:11,498 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 21:12:11,498 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [534974566] [2024-10-11 21:12:11,499 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 21:12:11,499 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 21:12:11,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 21:12:11,619 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2024-10-11 21:12:11,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 21:12:11,672 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 4 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-10-11 21:12:11,672 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 21:12:11,673 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [534974566] [2024-10-11 21:12:11,673 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [534974566] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-11 21:12:11,673 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1716407349] [2024-10-11 21:12:11,673 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 21:12:11,673 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 21:12:11,673 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-11 21:12:11,676 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-11 21:12:11,695 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-10-11 21:12:11,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 21:12:11,733 INFO L255 TraceCheckSpWp]: Trace formula consists of 79 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-10-11 21:12:11,734 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 21:12:11,805 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-10-11 21:12:11,805 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-11 21:12:11,806 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1716407349] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 21:12:11,806 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-11 21:12:11,806 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [7] total 12 [2024-10-11 21:12:11,806 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [110347150] [2024-10-11 21:12:11,806 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 21:12:11,807 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-10-11 21:12:11,807 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 21:12:11,808 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-10-11 21:12:11,808 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=128, Unknown=0, NotChecked=0, Total=156 [2024-10-11 21:12:11,808 INFO L87 Difference]: Start difference. First operand 444 states and 560 transitions. Second operand has 7 states, 6 states have (on average 3.0) internal successors, (18), 6 states have internal predecessors, (18), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-10-11 21:12:11,995 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-11 21:12:11,995 INFO L93 Difference]: Finished difference Result 493 states and 649 transitions. [2024-10-11 21:12:11,996 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-10-11 21:12:11,996 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 3.0) internal successors, (18), 6 states have internal predecessors, (18), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 23 [2024-10-11 21:12:11,996 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-11 21:12:11,999 INFO L225 Difference]: With dead ends: 493 [2024-10-11 21:12:12,000 INFO L226 Difference]: Without dead ends: 492 [2024-10-11 21:12:12,000 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=64, Invalid=278, Unknown=0, NotChecked=0, Total=342 [2024-10-11 21:12:12,001 INFO L432 NwaCegarLoop]: 36 mSDtfsCounter, 45 mSDsluCounter, 93 mSDsCounter, 0 mSdLazyCounter, 94 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 47 SdHoareTripleChecker+Valid, 129 SdHoareTripleChecker+Invalid, 109 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 94 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-11 21:12:12,004 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [47 Valid, 129 Invalid, 109 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 94 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-11 21:12:12,004 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 492 states. [2024-10-11 21:12:12,043 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 492 to 443. [2024-10-11 21:12:12,045 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 443 states, 346 states have (on average 1.216763005780347) internal successors, (421), 352 states have internal predecessors, (421), 69 states have call successors, (69), 24 states have call predecessors, (69), 23 states have return successors, (66), 66 states have call predecessors, (66), 66 states have call successors, (66) [2024-10-11 21:12:12,048 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 443 states to 443 states and 556 transitions. [2024-10-11 21:12:12,048 INFO L78 Accepts]: Start accepts. Automaton has 443 states and 556 transitions. Word has length 23 [2024-10-11 21:12:12,049 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-11 21:12:12,049 INFO L471 AbstractCegarLoop]: Abstraction has 443 states and 556 transitions. [2024-10-11 21:12:12,049 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 3.0) internal successors, (18), 6 states have internal predecessors, (18), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-10-11 21:12:12,049 INFO L276 IsEmpty]: Start isEmpty. Operand 443 states and 556 transitions. [2024-10-11 21:12:12,051 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2024-10-11 21:12:12,051 INFO L207 NwaCegarLoop]: Found error trace [2024-10-11 21:12:12,052 INFO L215 NwaCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 21:12:12,069 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2024-10-11 21:12:12,252 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,4 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 21:12:12,253 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ackermannErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ackermannErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ackermannErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ackermannErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 5 more)] === [2024-10-11 21:12:12,254 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 21:12:12,254 INFO L85 PathProgramCache]: Analyzing trace with hash -1001146494, now seen corresponding path program 1 times [2024-10-11 21:12:12,254 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 21:12:12,254 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1053169116] [2024-10-11 21:12:12,254 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 21:12:12,255 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 21:12:12,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 21:12:12,338 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2024-10-11 21:12:12,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 21:12:12,366 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 1 proven. 5 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-10-11 21:12:12,366 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 21:12:12,366 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1053169116] [2024-10-11 21:12:12,367 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1053169116] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-11 21:12:12,367 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1423080185] [2024-10-11 21:12:12,367 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 21:12:12,367 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 21:12:12,367 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-11 21:12:12,369 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-11 21:12:12,370 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-10-11 21:12:12,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 21:12:12,408 INFO L255 TraceCheckSpWp]: Trace formula consists of 80 conjuncts, 10 conjuncts are in the unsatisfiable core [2024-10-11 21:12:12,409 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 21:12:12,459 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 1 proven. 5 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-10-11 21:12:12,460 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-11 21:12:12,605 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 1 proven. 5 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-10-11 21:12:12,606 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1423080185] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-11 21:12:12,606 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-11 21:12:12,606 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 14 [2024-10-11 21:12:12,606 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [161960155] [2024-10-11 21:12:12,606 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-11 21:12:12,606 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2024-10-11 21:12:12,607 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 21:12:12,607 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2024-10-11 21:12:12,607 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=174, Unknown=0, NotChecked=0, Total=210 [2024-10-11 21:12:12,607 INFO L87 Difference]: Start difference. First operand 443 states and 556 transitions. Second operand has 15 states, 12 states have (on average 3.3333333333333335) internal successors, (40), 13 states have internal predecessors, (40), 6 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-10-11 21:12:12,990 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-11 21:12:12,990 INFO L93 Difference]: Finished difference Result 806 states and 1178 transitions. [2024-10-11 21:12:12,991 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2024-10-11 21:12:12,991 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 12 states have (on average 3.3333333333333335) internal successors, (40), 13 states have internal predecessors, (40), 6 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 24 [2024-10-11 21:12:12,991 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-11 21:12:12,998 INFO L225 Difference]: With dead ends: 806 [2024-10-11 21:12:12,998 INFO L226 Difference]: Without dead ends: 804 [2024-10-11 21:12:13,001 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 67 GetRequests, 42 SyntacticMatches, 1 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 70 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=138, Invalid=512, Unknown=0, NotChecked=0, Total=650 [2024-10-11 21:12:13,002 INFO L432 NwaCegarLoop]: 18 mSDtfsCounter, 64 mSDsluCounter, 144 mSDsCounter, 0 mSdLazyCounter, 247 mSolverCounterSat, 49 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 72 SdHoareTripleChecker+Valid, 162 SdHoareTripleChecker+Invalid, 296 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 49 IncrementalHoareTripleChecker+Valid, 247 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-10-11 21:12:13,003 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [72 Valid, 162 Invalid, 296 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [49 Valid, 247 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-10-11 21:12:13,005 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 804 states. [2024-10-11 21:12:13,064 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 804 to 640. [2024-10-11 21:12:13,065 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 640 states, 476 states have (on average 1.203781512605042) internal successors, (573), 504 states have internal predecessors, (573), 107 states have call successors, (107), 31 states have call predecessors, (107), 52 states have return successors, (194), 104 states have call predecessors, (194), 103 states have call successors, (194) [2024-10-11 21:12:13,070 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 640 states to 640 states and 874 transitions. [2024-10-11 21:12:13,071 INFO L78 Accepts]: Start accepts. Automaton has 640 states and 874 transitions. Word has length 24 [2024-10-11 21:12:13,071 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-11 21:12:13,071 INFO L471 AbstractCegarLoop]: Abstraction has 640 states and 874 transitions. [2024-10-11 21:12:13,071 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 12 states have (on average 3.3333333333333335) internal successors, (40), 13 states have internal predecessors, (40), 6 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-10-11 21:12:13,072 INFO L276 IsEmpty]: Start isEmpty. Operand 640 states and 874 transitions. [2024-10-11 21:12:13,072 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2024-10-11 21:12:13,072 INFO L207 NwaCegarLoop]: Found error trace [2024-10-11 21:12:13,073 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1] [2024-10-11 21:12:13,090 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2024-10-11 21:12:13,274 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable8 [2024-10-11 21:12:13,275 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ackermannErr6ASSERT_VIOLATIONINTEGER_OVERFLOW === [ackermannErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ackermannErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ackermannErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 5 more)] === [2024-10-11 21:12:13,276 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 21:12:13,276 INFO L85 PathProgramCache]: Analyzing trace with hash 1126474954, now seen corresponding path program 1 times [2024-10-11 21:12:13,276 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 21:12:13,276 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [4852706] [2024-10-11 21:12:13,276 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 21:12:13,276 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 21:12:13,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 21:12:13,367 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 21:12:13,367 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 21:12:13,367 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [4852706] [2024-10-11 21:12:13,368 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [4852706] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-11 21:12:13,368 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1006687450] [2024-10-11 21:12:13,368 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 21:12:13,368 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 21:12:13,368 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-11 21:12:13,370 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-11 21:12:13,371 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-10-11 21:12:13,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 21:12:13,405 INFO L255 TraceCheckSpWp]: Trace formula consists of 76 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-10-11 21:12:13,406 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 21:12:13,446 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 21:12:13,446 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-11 21:12:13,536 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 21:12:13,536 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1006687450] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-11 21:12:13,536 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-11 21:12:13,536 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 15 [2024-10-11 21:12:13,536 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1296885471] [2024-10-11 21:12:13,536 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-11 21:12:13,537 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2024-10-11 21:12:13,537 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 21:12:13,537 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2024-10-11 21:12:13,537 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=60, Invalid=180, Unknown=0, NotChecked=0, Total=240 [2024-10-11 21:12:13,538 INFO L87 Difference]: Start difference. First operand 640 states and 874 transitions. Second operand has 16 states, 13 states have (on average 3.3846153846153846) internal successors, (44), 10 states have internal predecessors, (44), 6 states have call successors, (6), 6 states have call predecessors, (6), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 21:12:13,875 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-11 21:12:13,876 INFO L93 Difference]: Finished difference Result 996 states and 1429 transitions. [2024-10-11 21:12:13,876 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2024-10-11 21:12:13,876 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 13 states have (on average 3.3846153846153846) internal successors, (44), 10 states have internal predecessors, (44), 6 states have call successors, (6), 6 states have call predecessors, (6), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2024-10-11 21:12:13,876 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-11 21:12:13,881 INFO L225 Difference]: With dead ends: 996 [2024-10-11 21:12:13,882 INFO L226 Difference]: Without dead ends: 995 [2024-10-11 21:12:13,882 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 64 GetRequests, 44 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 60 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=129, Invalid=333, Unknown=0, NotChecked=0, Total=462 [2024-10-11 21:12:13,883 INFO L432 NwaCegarLoop]: 23 mSDtfsCounter, 247 mSDsluCounter, 243 mSDsCounter, 0 mSdLazyCounter, 261 mSolverCounterSat, 51 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 254 SdHoareTripleChecker+Valid, 266 SdHoareTripleChecker+Invalid, 312 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 51 IncrementalHoareTripleChecker+Valid, 261 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-10-11 21:12:13,883 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [254 Valid, 266 Invalid, 312 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [51 Valid, 261 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-10-11 21:12:13,884 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 995 states. [2024-10-11 21:12:13,989 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 995 to 916. [2024-10-11 21:12:13,991 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 916 states, 680 states have (on average 1.1720588235294118) internal successors, (797), 720 states have internal predecessors, (797), 155 states have call successors, (155), 43 states have call predecessors, (155), 76 states have return successors, (278), 152 states have call predecessors, (278), 151 states have call successors, (278) [2024-10-11 21:12:13,998 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 916 states to 916 states and 1230 transitions. [2024-10-11 21:12:13,999 INFO L78 Accepts]: Start accepts. Automaton has 916 states and 1230 transitions. Word has length 26 [2024-10-11 21:12:14,000 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-11 21:12:14,000 INFO L471 AbstractCegarLoop]: Abstraction has 916 states and 1230 transitions. [2024-10-11 21:12:14,000 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 13 states have (on average 3.3846153846153846) internal successors, (44), 10 states have internal predecessors, (44), 6 states have call successors, (6), 6 states have call predecessors, (6), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 21:12:14,000 INFO L276 IsEmpty]: Start isEmpty. Operand 916 states and 1230 transitions. [2024-10-11 21:12:14,004 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2024-10-11 21:12:14,004 INFO L207 NwaCegarLoop]: Found error trace [2024-10-11 21:12:14,007 INFO L215 NwaCegarLoop]: trace histogram [3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 21:12:14,024 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2024-10-11 21:12:14,207 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2024-10-11 21:12:14,208 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ackermannErr6ASSERT_VIOLATIONINTEGER_OVERFLOW === [ackermannErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ackermannErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ackermannErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 5 more)] === [2024-10-11 21:12:14,209 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 21:12:14,209 INFO L85 PathProgramCache]: Analyzing trace with hash -24086519, now seen corresponding path program 1 times [2024-10-11 21:12:14,209 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 21:12:14,210 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [216660588] [2024-10-11 21:12:14,210 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 21:12:14,210 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 21:12:14,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 21:12:14,271 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2024-10-11 21:12:14,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 21:12:14,295 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-10-11 21:12:14,295 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 21:12:14,296 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [216660588] [2024-10-11 21:12:14,296 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [216660588] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-11 21:12:14,296 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [976891815] [2024-10-11 21:12:14,296 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 21:12:14,296 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 21:12:14,296 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-11 21:12:14,298 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-11 21:12:14,299 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-10-11 21:12:14,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 21:12:14,340 INFO L255 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 10 conjuncts are in the unsatisfiable core [2024-10-11 21:12:14,341 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 21:12:14,381 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-10-11 21:12:14,381 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-11 21:12:14,527 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-10-11 21:12:14,528 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [976891815] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-11 21:12:14,528 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-11 21:12:14,528 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 14 [2024-10-11 21:12:14,528 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1096553638] [2024-10-11 21:12:14,528 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-11 21:12:14,528 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2024-10-11 21:12:14,528 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 21:12:14,529 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2024-10-11 21:12:14,529 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=173, Unknown=0, NotChecked=0, Total=210 [2024-10-11 21:12:14,529 INFO L87 Difference]: Start difference. First operand 916 states and 1230 transitions. Second operand has 15 states, 12 states have (on average 3.0) internal successors, (36), 13 states have internal predecessors, (36), 6 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-10-11 21:12:14,916 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-11 21:12:14,917 INFO L93 Difference]: Finished difference Result 1477 states and 2204 transitions. [2024-10-11 21:12:14,917 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-10-11 21:12:14,917 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 12 states have (on average 3.0) internal successors, (36), 13 states have internal predecessors, (36), 6 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 26 [2024-10-11 21:12:14,918 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-11 21:12:14,926 INFO L225 Difference]: With dead ends: 1477 [2024-10-11 21:12:14,926 INFO L226 Difference]: Without dead ends: 1472 [2024-10-11 21:12:14,927 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 68 GetRequests, 46 SyntacticMatches, 1 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 44 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=115, Invalid=391, Unknown=0, NotChecked=0, Total=506 [2024-10-11 21:12:14,928 INFO L432 NwaCegarLoop]: 18 mSDtfsCounter, 147 mSDsluCounter, 117 mSDsCounter, 0 mSdLazyCounter, 239 mSolverCounterSat, 108 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 149 SdHoareTripleChecker+Valid, 135 SdHoareTripleChecker+Invalid, 347 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 108 IncrementalHoareTripleChecker+Valid, 239 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-10-11 21:12:14,928 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [149 Valid, 135 Invalid, 347 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [108 Valid, 239 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-10-11 21:12:14,930 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1472 states. [2024-10-11 21:12:15,042 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1472 to 1079. [2024-10-11 21:12:15,044 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1079 states, 803 states have (on average 1.1706102117061021) internal successors, (940), 852 states have internal predecessors, (940), 175 states have call successors, (175), 53 states have call predecessors, (175), 96 states have return successors, (415), 173 states have call predecessors, (415), 170 states have call successors, (415) [2024-10-11 21:12:15,050 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1079 states to 1079 states and 1530 transitions. [2024-10-11 21:12:15,051 INFO L78 Accepts]: Start accepts. Automaton has 1079 states and 1530 transitions. Word has length 26 [2024-10-11 21:12:15,052 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-11 21:12:15,052 INFO L471 AbstractCegarLoop]: Abstraction has 1079 states and 1530 transitions. [2024-10-11 21:12:15,052 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 12 states have (on average 3.0) internal successors, (36), 13 states have internal predecessors, (36), 6 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-10-11 21:12:15,052 INFO L276 IsEmpty]: Start isEmpty. Operand 1079 states and 1530 transitions. [2024-10-11 21:12:15,053 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2024-10-11 21:12:15,053 INFO L207 NwaCegarLoop]: Found error trace [2024-10-11 21:12:15,053 INFO L215 NwaCegarLoop]: trace histogram [4, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 21:12:15,070 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2024-10-11 21:12:15,254 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2024-10-11 21:12:15,255 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ackermannErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ackermannErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ackermannErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ackermannErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 5 more)] === [2024-10-11 21:12:15,255 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 21:12:15,255 INFO L85 PathProgramCache]: Analyzing trace with hash -1210732047, now seen corresponding path program 1 times [2024-10-11 21:12:15,255 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 21:12:15,256 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1917931698] [2024-10-11 21:12:15,256 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 21:12:15,256 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 21:12:15,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 21:12:15,350 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2024-10-11 21:12:15,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 21:12:15,376 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-10-11 21:12:15,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 21:12:15,418 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 9 proven. 3 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-10-11 21:12:15,419 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 21:12:15,419 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1917931698] [2024-10-11 21:12:15,419 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1917931698] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-11 21:12:15,419 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1755585547] [2024-10-11 21:12:15,419 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 21:12:15,419 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 21:12:15,419 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-11 21:12:15,422 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-11 21:12:15,423 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-10-11 21:12:15,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 21:12:15,470 INFO L255 TraceCheckSpWp]: Trace formula consists of 102 conjuncts, 9 conjuncts are in the unsatisfiable core [2024-10-11 21:12:15,471 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 21:12:15,511 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 7 proven. 5 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-10-11 21:12:15,512 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-11 21:12:15,715 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 9 proven. 3 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-10-11 21:12:15,715 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1755585547] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-11 21:12:15,716 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-11 21:12:15,716 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 17 [2024-10-11 21:12:15,716 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1546053463] [2024-10-11 21:12:15,716 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-11 21:12:15,716 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2024-10-11 21:12:15,717 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 21:12:15,717 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2024-10-11 21:12:15,717 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=260, Unknown=0, NotChecked=0, Total=306 [2024-10-11 21:12:15,718 INFO L87 Difference]: Start difference. First operand 1079 states and 1530 transitions. Second operand has 18 states, 17 states have (on average 2.4705882352941178) internal successors, (42), 14 states have internal predecessors, (42), 3 states have call successors, (5), 3 states have call predecessors, (5), 5 states have return successors, (5), 4 states have call predecessors, (5), 1 states have call successors, (5) [2024-10-11 21:12:16,281 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-11 21:12:16,281 INFO L93 Difference]: Finished difference Result 1882 states and 3144 transitions. [2024-10-11 21:12:16,282 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-10-11 21:12:16,282 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 17 states have (on average 2.4705882352941178) internal successors, (42), 14 states have internal predecessors, (42), 3 states have call successors, (5), 3 states have call predecessors, (5), 5 states have return successors, (5), 4 states have call predecessors, (5), 1 states have call successors, (5) Word has length 33 [2024-10-11 21:12:16,282 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-11 21:12:16,294 INFO L225 Difference]: With dead ends: 1882 [2024-10-11 21:12:16,294 INFO L226 Difference]: Without dead ends: 1868 [2024-10-11 21:12:16,295 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 89 GetRequests, 62 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 86 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=140, Invalid=672, Unknown=0, NotChecked=0, Total=812 [2024-10-11 21:12:16,296 INFO L432 NwaCegarLoop]: 25 mSDtfsCounter, 96 mSDsluCounter, 158 mSDsCounter, 0 mSdLazyCounter, 326 mSolverCounterSat, 110 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 96 SdHoareTripleChecker+Valid, 183 SdHoareTripleChecker+Invalid, 436 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 110 IncrementalHoareTripleChecker+Valid, 326 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-10-11 21:12:16,296 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [96 Valid, 183 Invalid, 436 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [110 Valid, 326 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-10-11 21:12:16,298 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1868 states. [2024-10-11 21:12:16,492 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1868 to 1576. [2024-10-11 21:12:16,494 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1576 states, 1148 states have (on average 1.1628919860627178) internal successors, (1335), 1209 states have internal predecessors, (1335), 271 states have call successors, (271), 73 states have call predecessors, (271), 152 states have return successors, (774), 293 states have call predecessors, (774), 263 states have call successors, (774) [2024-10-11 21:12:16,505 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1576 states to 1576 states and 2380 transitions. [2024-10-11 21:12:16,506 INFO L78 Accepts]: Start accepts. Automaton has 1576 states and 2380 transitions. Word has length 33 [2024-10-11 21:12:16,506 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-11 21:12:16,506 INFO L471 AbstractCegarLoop]: Abstraction has 1576 states and 2380 transitions. [2024-10-11 21:12:16,506 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 17 states have (on average 2.4705882352941178) internal successors, (42), 14 states have internal predecessors, (42), 3 states have call successors, (5), 3 states have call predecessors, (5), 5 states have return successors, (5), 4 states have call predecessors, (5), 1 states have call successors, (5) [2024-10-11 21:12:16,507 INFO L276 IsEmpty]: Start isEmpty. Operand 1576 states and 2380 transitions. [2024-10-11 21:12:16,507 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2024-10-11 21:12:16,507 INFO L207 NwaCegarLoop]: Found error trace [2024-10-11 21:12:16,508 INFO L215 NwaCegarLoop]: trace histogram [4, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 21:12:16,525 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2024-10-11 21:12:16,708 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,8 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 21:12:16,708 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ackermannErr6ASSERT_VIOLATIONINTEGER_OVERFLOW === [ackermannErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ackermannErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ackermannErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 5 more)] === [2024-10-11 21:12:16,709 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 21:12:16,709 INFO L85 PathProgramCache]: Analyzing trace with hash 427659960, now seen corresponding path program 1 times [2024-10-11 21:12:16,709 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 21:12:16,709 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [120245633] [2024-10-11 21:12:16,709 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 21:12:16,709 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 21:12:16,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 21:12:16,760 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2024-10-11 21:12:16,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 21:12:16,785 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-10-11 21:12:16,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 21:12:16,818 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 14 proven. 1 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-10-11 21:12:16,818 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 21:12:16,818 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [120245633] [2024-10-11 21:12:16,818 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [120245633] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-11 21:12:16,818 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1658474189] [2024-10-11 21:12:16,819 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 21:12:16,819 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 21:12:16,819 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-11 21:12:16,821 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-11 21:12:16,830 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-10-11 21:12:16,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 21:12:16,879 INFO L255 TraceCheckSpWp]: Trace formula consists of 103 conjuncts, 9 conjuncts are in the unsatisfiable core [2024-10-11 21:12:16,881 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 21:12:16,921 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 12 proven. 3 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-10-11 21:12:16,921 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-11 21:12:17,110 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-10-11 21:12:17,110 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1658474189] provided 1 perfect and 1 imperfect interpolant sequences [2024-10-11 21:12:17,110 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2024-10-11 21:12:17,110 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [8, 8] total 17 [2024-10-11 21:12:17,111 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [331590947] [2024-10-11 21:12:17,111 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 21:12:17,111 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-10-11 21:12:17,111 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 21:12:17,112 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-10-11 21:12:17,112 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=258, Unknown=0, NotChecked=0, Total=306 [2024-10-11 21:12:17,112 INFO L87 Difference]: Start difference. First operand 1576 states and 2380 transitions. Second operand has 9 states, 8 states have (on average 3.375) internal successors, (27), 7 states have internal predecessors, (27), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2024-10-11 21:12:17,468 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-11 21:12:17,469 INFO L93 Difference]: Finished difference Result 1783 states and 2840 transitions. [2024-10-11 21:12:17,469 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-10-11 21:12:17,469 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.375) internal successors, (27), 7 states have internal predecessors, (27), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) Word has length 35 [2024-10-11 21:12:17,471 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-11 21:12:17,482 INFO L225 Difference]: With dead ends: 1783 [2024-10-11 21:12:17,482 INFO L226 Difference]: Without dead ends: 1782 [2024-10-11 21:12:17,484 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 85 GetRequests, 64 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 49 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=75, Invalid=431, Unknown=0, NotChecked=0, Total=506 [2024-10-11 21:12:17,485 INFO L432 NwaCegarLoop]: 35 mSDtfsCounter, 44 mSDsluCounter, 114 mSDsCounter, 0 mSdLazyCounter, 176 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 52 SdHoareTripleChecker+Valid, 149 SdHoareTripleChecker+Invalid, 202 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 176 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-11 21:12:17,485 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [52 Valid, 149 Invalid, 202 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 176 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-11 21:12:17,487 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1782 states. [2024-10-11 21:12:17,691 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1782 to 1613. [2024-10-11 21:12:17,694 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1613 states, 1172 states have (on average 1.1569965870307166) internal successors, (1356), 1230 states have internal predecessors, (1356), 287 states have call successors, (287), 73 states have call predecessors, (287), 149 states have return successors, (703), 309 states have call predecessors, (703), 279 states have call successors, (703) [2024-10-11 21:12:17,705 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1613 states to 1613 states and 2346 transitions. [2024-10-11 21:12:17,706 INFO L78 Accepts]: Start accepts. Automaton has 1613 states and 2346 transitions. Word has length 35 [2024-10-11 21:12:17,707 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-11 21:12:17,707 INFO L471 AbstractCegarLoop]: Abstraction has 1613 states and 2346 transitions. [2024-10-11 21:12:17,707 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 3.375) internal successors, (27), 7 states have internal predecessors, (27), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2024-10-11 21:12:17,707 INFO L276 IsEmpty]: Start isEmpty. Operand 1613 states and 2346 transitions. [2024-10-11 21:12:17,710 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2024-10-11 21:12:17,710 INFO L207 NwaCegarLoop]: Found error trace [2024-10-11 21:12:17,710 INFO L215 NwaCegarLoop]: trace histogram [5, 4, 4, 4, 4, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 21:12:17,729 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2024-10-11 21:12:17,914 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2024-10-11 21:12:17,915 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ackermannErr6ASSERT_VIOLATIONINTEGER_OVERFLOW === [ackermannErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ackermannErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ackermannErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 5 more)] === [2024-10-11 21:12:17,915 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 21:12:17,915 INFO L85 PathProgramCache]: Analyzing trace with hash 965988533, now seen corresponding path program 2 times [2024-10-11 21:12:17,915 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 21:12:17,915 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [537390641] [2024-10-11 21:12:17,916 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 21:12:17,916 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 21:12:17,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 21:12:18,048 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2024-10-11 21:12:18,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 21:12:18,076 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 2 proven. 40 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2024-10-11 21:12:18,076 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 21:12:18,076 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [537390641] [2024-10-11 21:12:18,076 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [537390641] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-11 21:12:18,077 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1853373988] [2024-10-11 21:12:18,077 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-10-11 21:12:18,077 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 21:12:18,077 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-11 21:12:18,079 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-11 21:12:18,080 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-10-11 21:12:18,128 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-10-11 21:12:18,128 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-11 21:12:18,129 INFO L255 TraceCheckSpWp]: Trace formula consists of 113 conjuncts, 14 conjuncts are in the unsatisfiable core [2024-10-11 21:12:18,130 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 21:12:18,187 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 2 proven. 40 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2024-10-11 21:12:18,188 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-11 21:12:18,398 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 4 proven. 38 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2024-10-11 21:12:18,399 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1853373988] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-11 21:12:18,399 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-11 21:12:18,399 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 22 [2024-10-11 21:12:18,399 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [924359462] [2024-10-11 21:12:18,399 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-11 21:12:18,400 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2024-10-11 21:12:18,400 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 21:12:18,400 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2024-10-11 21:12:18,401 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=85, Invalid=421, Unknown=0, NotChecked=0, Total=506 [2024-10-11 21:12:18,401 INFO L87 Difference]: Start difference. First operand 1613 states and 2346 transitions. Second operand has 23 states, 20 states have (on average 3.0) internal successors, (60), 17 states have internal predecessors, (60), 8 states have call successors, (10), 7 states have call predecessors, (10), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-10-11 21:12:19,371 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-11 21:12:19,371 INFO L93 Difference]: Finished difference Result 3196 states and 5553 transitions. [2024-10-11 21:12:19,372 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2024-10-11 21:12:19,372 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 20 states have (on average 3.0) internal successors, (60), 17 states have internal predecessors, (60), 8 states have call successors, (10), 7 states have call predecessors, (10), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 42 [2024-10-11 21:12:19,372 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-11 21:12:19,395 INFO L225 Difference]: With dead ends: 3196 [2024-10-11 21:12:19,395 INFO L226 Difference]: Without dead ends: 3195 [2024-10-11 21:12:19,398 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 121 GetRequests, 75 SyntacticMatches, 0 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 420 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=491, Invalid=1765, Unknown=0, NotChecked=0, Total=2256 [2024-10-11 21:12:19,398 INFO L432 NwaCegarLoop]: 18 mSDtfsCounter, 330 mSDsluCounter, 179 mSDsCounter, 0 mSdLazyCounter, 319 mSolverCounterSat, 245 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 332 SdHoareTripleChecker+Valid, 197 SdHoareTripleChecker+Invalid, 564 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 245 IncrementalHoareTripleChecker+Valid, 319 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-10-11 21:12:19,399 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [332 Valid, 197 Invalid, 564 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [245 Valid, 319 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-10-11 21:12:19,401 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3195 states. [2024-10-11 21:12:19,753 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3195 to 2200. [2024-10-11 21:12:19,757 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2200 states, 1611 states have (on average 1.1558038485412787) internal successors, (1862), 1688 states have internal predecessors, (1862), 372 states have call successors, (372), 107 states have call predecessors, (372), 212 states have return successors, (1147), 404 states have call predecessors, (1147), 364 states have call successors, (1147) [2024-10-11 21:12:19,768 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2200 states to 2200 states and 3381 transitions. [2024-10-11 21:12:19,770 INFO L78 Accepts]: Start accepts. Automaton has 2200 states and 3381 transitions. Word has length 42 [2024-10-11 21:12:19,770 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-11 21:12:19,770 INFO L471 AbstractCegarLoop]: Abstraction has 2200 states and 3381 transitions. [2024-10-11 21:12:19,771 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 20 states have (on average 3.0) internal successors, (60), 17 states have internal predecessors, (60), 8 states have call successors, (10), 7 states have call predecessors, (10), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-10-11 21:12:19,771 INFO L276 IsEmpty]: Start isEmpty. Operand 2200 states and 3381 transitions. [2024-10-11 21:12:19,772 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2024-10-11 21:12:19,773 INFO L207 NwaCegarLoop]: Found error trace [2024-10-11 21:12:19,773 INFO L215 NwaCegarLoop]: trace histogram [5, 4, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 21:12:19,793 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2024-10-11 21:12:19,973 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13,10 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 21:12:19,974 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ackermannErr6ASSERT_VIOLATIONINTEGER_OVERFLOW === [ackermannErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ackermannErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ackermannErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 5 more)] === [2024-10-11 21:12:19,975 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 21:12:19,975 INFO L85 PathProgramCache]: Analyzing trace with hash 798745486, now seen corresponding path program 2 times [2024-10-11 21:12:19,975 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 21:12:19,975 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [673420771] [2024-10-11 21:12:19,975 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 21:12:19,975 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 21:12:19,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 21:12:20,055 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2024-10-11 21:12:20,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 21:12:20,088 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-10-11 21:12:20,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 21:12:20,128 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 26 proven. 8 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-10-11 21:12:20,129 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 21:12:20,129 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [673420771] [2024-10-11 21:12:20,130 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [673420771] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-11 21:12:20,130 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2039314443] [2024-10-11 21:12:20,130 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-10-11 21:12:20,130 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 21:12:20,131 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-11 21:12:20,133 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-11 21:12:20,135 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2024-10-11 21:12:20,183 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-10-11 21:12:20,183 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-11 21:12:20,184 INFO L255 TraceCheckSpWp]: Trace formula consists of 119 conjuncts, 11 conjuncts are in the unsatisfiable core [2024-10-11 21:12:20,185 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 21:12:20,243 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 24 proven. 10 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-10-11 21:12:20,243 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-11 21:12:20,490 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 28 proven. 6 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-10-11 21:12:20,490 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2039314443] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-11 21:12:20,490 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-11 21:12:20,490 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 10] total 21 [2024-10-11 21:12:20,490 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1516538535] [2024-10-11 21:12:20,490 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-11 21:12:20,491 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2024-10-11 21:12:20,491 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 21:12:20,491 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2024-10-11 21:12:20,492 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=394, Unknown=0, NotChecked=0, Total=462 [2024-10-11 21:12:20,492 INFO L87 Difference]: Start difference. First operand 2200 states and 3381 transitions. Second operand has 22 states, 21 states have (on average 2.857142857142857) internal successors, (60), 16 states have internal predecessors, (60), 5 states have call successors, (7), 5 states have call predecessors, (7), 5 states have return successors, (5), 4 states have call predecessors, (5), 1 states have call successors, (5) [2024-10-11 21:12:21,722 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-11 21:12:21,722 INFO L93 Difference]: Finished difference Result 4454 states and 8208 transitions. [2024-10-11 21:12:21,723 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2024-10-11 21:12:21,723 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 21 states have (on average 2.857142857142857) internal successors, (60), 16 states have internal predecessors, (60), 5 states have call successors, (7), 5 states have call predecessors, (7), 5 states have return successors, (5), 4 states have call predecessors, (5), 1 states have call successors, (5) Word has length 43 [2024-10-11 21:12:21,723 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-11 21:12:21,743 INFO L225 Difference]: With dead ends: 4454 [2024-10-11 21:12:21,743 INFO L226 Difference]: Without dead ends: 3139 [2024-10-11 21:12:21,757 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 133 GetRequests, 84 SyntacticMatches, 0 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 498 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=501, Invalid=2049, Unknown=0, NotChecked=0, Total=2550 [2024-10-11 21:12:21,758 INFO L432 NwaCegarLoop]: 37 mSDtfsCounter, 173 mSDsluCounter, 258 mSDsCounter, 0 mSdLazyCounter, 550 mSolverCounterSat, 177 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 173 SdHoareTripleChecker+Valid, 295 SdHoareTripleChecker+Invalid, 727 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 177 IncrementalHoareTripleChecker+Valid, 550 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-10-11 21:12:21,758 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [173 Valid, 295 Invalid, 727 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [177 Valid, 550 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-10-11 21:12:21,761 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3139 states. [2024-10-11 21:12:22,123 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3139 to 2493. [2024-10-11 21:12:22,128 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2493 states, 1822 states have (on average 1.1492864983534576) internal successors, (2094), 1908 states have internal predecessors, (2094), 428 states have call successors, (428), 122 states have call predecessors, (428), 238 states have return successors, (1243), 462 states have call predecessors, (1243), 420 states have call successors, (1243) [2024-10-11 21:12:22,142 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2493 states to 2493 states and 3765 transitions. [2024-10-11 21:12:22,145 INFO L78 Accepts]: Start accepts. Automaton has 2493 states and 3765 transitions. Word has length 43 [2024-10-11 21:12:22,146 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-11 21:12:22,147 INFO L471 AbstractCegarLoop]: Abstraction has 2493 states and 3765 transitions. [2024-10-11 21:12:22,147 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 21 states have (on average 2.857142857142857) internal successors, (60), 16 states have internal predecessors, (60), 5 states have call successors, (7), 5 states have call predecessors, (7), 5 states have return successors, (5), 4 states have call predecessors, (5), 1 states have call successors, (5) [2024-10-11 21:12:22,147 INFO L276 IsEmpty]: Start isEmpty. Operand 2493 states and 3765 transitions. [2024-10-11 21:12:22,150 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2024-10-11 21:12:22,150 INFO L207 NwaCegarLoop]: Found error trace [2024-10-11 21:12:22,150 INFO L215 NwaCegarLoop]: trace histogram [5, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 21:12:22,166 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2024-10-11 21:12:22,350 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2024-10-11 21:12:22,351 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ackermannErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ackermannErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ackermannErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ackermannErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 5 more)] === [2024-10-11 21:12:22,351 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 21:12:22,351 INFO L85 PathProgramCache]: Analyzing trace with hash -1386196276, now seen corresponding path program 1 times [2024-10-11 21:12:22,351 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 21:12:22,351 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [554710698] [2024-10-11 21:12:22,352 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 21:12:22,352 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 21:12:22,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 21:12:22,388 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2024-10-11 21:12:22,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 21:12:22,408 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2024-10-11 21:12:22,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 21:12:22,424 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2024-10-11 21:12:22,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 21:12:22,427 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 24 proven. 5 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2024-10-11 21:12:22,428 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 21:12:22,428 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [554710698] [2024-10-11 21:12:22,428 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [554710698] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-11 21:12:22,428 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1807476261] [2024-10-11 21:12:22,428 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 21:12:22,428 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 21:12:22,429 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-11 21:12:22,430 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-11 21:12:22,432 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2024-10-11 21:12:22,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 21:12:22,485 INFO L255 TraceCheckSpWp]: Trace formula consists of 124 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-10-11 21:12:22,487 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 21:12:22,538 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 22 proven. 5 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2024-10-11 21:12:22,539 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-11 21:12:22,652 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 22 proven. 5 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2024-10-11 21:12:22,653 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1807476261] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-11 21:12:22,653 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-11 21:12:22,653 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 7, 7] total 12 [2024-10-11 21:12:22,653 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1674793645] [2024-10-11 21:12:22,653 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-11 21:12:22,654 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-10-11 21:12:22,654 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 21:12:22,655 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-10-11 21:12:22,655 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=99, Unknown=0, NotChecked=0, Total=132 [2024-10-11 21:12:22,655 INFO L87 Difference]: Start difference. First operand 2493 states and 3765 transitions. Second operand has 12 states, 12 states have (on average 3.9166666666666665) internal successors, (47), 12 states have internal predecessors, (47), 4 states have call successors, (6), 2 states have call predecessors, (6), 5 states have return successors, (5), 2 states have call predecessors, (5), 4 states have call successors, (5) [2024-10-11 21:12:22,922 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-11 21:12:22,922 INFO L93 Difference]: Finished difference Result 3516 states and 5519 transitions. [2024-10-11 21:12:22,923 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-10-11 21:12:22,923 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 3.9166666666666665) internal successors, (47), 12 states have internal predecessors, (47), 4 states have call successors, (6), 2 states have call predecessors, (6), 5 states have return successors, (5), 2 states have call predecessors, (5), 4 states have call successors, (5) Word has length 43 [2024-10-11 21:12:22,923 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-11 21:12:22,932 INFO L225 Difference]: With dead ends: 3516 [2024-10-11 21:12:22,932 INFO L226 Difference]: Without dead ends: 1210 [2024-10-11 21:12:22,947 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 100 GetRequests, 84 SyntacticMatches, 3 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=60, Invalid=150, Unknown=0, NotChecked=0, Total=210 [2024-10-11 21:12:22,948 INFO L432 NwaCegarLoop]: 28 mSDtfsCounter, 55 mSDsluCounter, 84 mSDsCounter, 0 mSdLazyCounter, 154 mSolverCounterSat, 27 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 55 SdHoareTripleChecker+Valid, 112 SdHoareTripleChecker+Invalid, 181 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 27 IncrementalHoareTripleChecker+Valid, 154 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-11 21:12:22,948 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [55 Valid, 112 Invalid, 181 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [27 Valid, 154 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-11 21:12:22,949 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1210 states. [2024-10-11 21:12:23,105 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1210 to 1181. [2024-10-11 21:12:23,107 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1181 states, 880 states have (on average 1.1125) internal successors, (979), 904 states have internal predecessors, (979), 212 states have call successors, (212), 67 states have call predecessors, (212), 85 states have return successors, (333), 209 states have call predecessors, (333), 208 states have call successors, (333) [2024-10-11 21:12:23,111 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1181 states to 1181 states and 1524 transitions. [2024-10-11 21:12:23,113 INFO L78 Accepts]: Start accepts. Automaton has 1181 states and 1524 transitions. Word has length 43 [2024-10-11 21:12:23,113 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-11 21:12:23,113 INFO L471 AbstractCegarLoop]: Abstraction has 1181 states and 1524 transitions. [2024-10-11 21:12:23,114 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 3.9166666666666665) internal successors, (47), 12 states have internal predecessors, (47), 4 states have call successors, (6), 2 states have call predecessors, (6), 5 states have return successors, (5), 2 states have call predecessors, (5), 4 states have call successors, (5) [2024-10-11 21:12:23,114 INFO L276 IsEmpty]: Start isEmpty. Operand 1181 states and 1524 transitions. [2024-10-11 21:12:23,115 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2024-10-11 21:12:23,116 INFO L207 NwaCegarLoop]: Found error trace [2024-10-11 21:12:23,116 INFO L215 NwaCegarLoop]: trace histogram [6, 4, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 21:12:23,133 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2024-10-11 21:12:23,320 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2024-10-11 21:12:23,321 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ackermannErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ackermannErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ackermannErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ackermannErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 5 more)] === [2024-10-11 21:12:23,321 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 21:12:23,321 INFO L85 PathProgramCache]: Analyzing trace with hash 553185385, now seen corresponding path program 1 times [2024-10-11 21:12:23,321 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 21:12:23,321 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [93017624] [2024-10-11 21:12:23,321 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 21:12:23,321 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 21:12:23,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 21:12:23,410 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2024-10-11 21:12:23,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 21:12:23,461 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2024-10-11 21:12:23,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 21:12:23,489 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-10-11 21:12:23,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 21:12:23,524 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2024-10-11 21:12:23,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 21:12:23,564 INFO L134 CoverageAnalysis]: Checked inductivity of 58 backedges. 21 proven. 16 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2024-10-11 21:12:23,565 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 21:12:23,565 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [93017624] [2024-10-11 21:12:23,565 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [93017624] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-11 21:12:23,565 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [998479258] [2024-10-11 21:12:23,565 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 21:12:23,565 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 21:12:23,565 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-11 21:12:23,567 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-11 21:12:23,569 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2024-10-11 21:12:23,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 21:12:23,620 INFO L255 TraceCheckSpWp]: Trace formula consists of 146 conjuncts, 15 conjuncts are in the unsatisfiable core [2024-10-11 21:12:23,621 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 21:12:23,664 INFO L134 CoverageAnalysis]: Checked inductivity of 58 backedges. 14 proven. 18 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2024-10-11 21:12:23,665 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-11 21:12:24,139 INFO L134 CoverageAnalysis]: Checked inductivity of 58 backedges. 18 proven. 19 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2024-10-11 21:12:24,140 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [998479258] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-11 21:12:24,140 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-11 21:12:24,140 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 11, 13] total 26 [2024-10-11 21:12:24,140 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1901712066] [2024-10-11 21:12:24,140 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-11 21:12:24,141 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2024-10-11 21:12:24,141 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 21:12:24,141 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2024-10-11 21:12:24,142 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=88, Invalid=614, Unknown=0, NotChecked=0, Total=702 [2024-10-11 21:12:24,142 INFO L87 Difference]: Start difference. First operand 1181 states and 1524 transitions. Second operand has 27 states, 26 states have (on average 2.1923076923076925) internal successors, (57), 21 states have internal predecessors, (57), 5 states have call successors, (7), 3 states have call predecessors, (7), 8 states have return successors, (9), 8 states have call predecessors, (9), 3 states have call successors, (9) [2024-10-11 21:12:25,551 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-11 21:12:25,552 INFO L93 Difference]: Finished difference Result 3166 states and 5903 transitions. [2024-10-11 21:12:25,552 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 57 states. [2024-10-11 21:12:25,553 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 26 states have (on average 2.1923076923076925) internal successors, (57), 21 states have internal predecessors, (57), 5 states have call successors, (7), 3 states have call predecessors, (7), 8 states have return successors, (9), 8 states have call predecessors, (9), 3 states have call successors, (9) Word has length 52 [2024-10-11 21:12:25,553 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-11 21:12:25,582 INFO L225 Difference]: With dead ends: 3166 [2024-10-11 21:12:25,582 INFO L226 Difference]: Without dead ends: 3160 [2024-10-11 21:12:25,587 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 176 GetRequests, 99 SyntacticMatches, 0 SemanticMatches, 77 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1682 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=1079, Invalid=5083, Unknown=0, NotChecked=0, Total=6162 [2024-10-11 21:12:25,588 INFO L432 NwaCegarLoop]: 21 mSDtfsCounter, 191 mSDsluCounter, 174 mSDsCounter, 0 mSdLazyCounter, 466 mSolverCounterSat, 309 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 203 SdHoareTripleChecker+Valid, 195 SdHoareTripleChecker+Invalid, 775 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 309 IncrementalHoareTripleChecker+Valid, 466 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-10-11 21:12:25,588 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [203 Valid, 195 Invalid, 775 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [309 Valid, 466 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-10-11 21:12:25,591 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3160 states. [2024-10-11 21:12:26,031 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3160 to 2248. [2024-10-11 21:12:26,036 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2248 states, 1551 states have (on average 1.0870406189555126) internal successors, (1686), 1579 states have internal predecessors, (1686), 429 states have call successors, (429), 81 states have call predecessors, (429), 264 states have return successors, (2579), 587 states have call predecessors, (2579), 423 states have call successors, (2579) [2024-10-11 21:12:26,053 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2248 states to 2248 states and 4694 transitions. [2024-10-11 21:12:26,055 INFO L78 Accepts]: Start accepts. Automaton has 2248 states and 4694 transitions. Word has length 52 [2024-10-11 21:12:26,056 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-11 21:12:26,056 INFO L471 AbstractCegarLoop]: Abstraction has 2248 states and 4694 transitions. [2024-10-11 21:12:26,056 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 26 states have (on average 2.1923076923076925) internal successors, (57), 21 states have internal predecessors, (57), 5 states have call successors, (7), 3 states have call predecessors, (7), 8 states have return successors, (9), 8 states have call predecessors, (9), 3 states have call successors, (9) [2024-10-11 21:12:26,056 INFO L276 IsEmpty]: Start isEmpty. Operand 2248 states and 4694 transitions. [2024-10-11 21:12:26,058 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2024-10-11 21:12:26,058 INFO L207 NwaCegarLoop]: Found error trace [2024-10-11 21:12:26,058 INFO L215 NwaCegarLoop]: trace histogram [8, 8, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1] [2024-10-11 21:12:26,076 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2024-10-11 21:12:26,262 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2024-10-11 21:12:26,263 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting ackermannErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ackermannErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ackermannErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ackermannErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 5 more)] === [2024-10-11 21:12:26,263 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 21:12:26,263 INFO L85 PathProgramCache]: Analyzing trace with hash -352778574, now seen corresponding path program 1 times [2024-10-11 21:12:26,263 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 21:12:26,263 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [925098473] [2024-10-11 21:12:26,263 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 21:12:26,264 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 21:12:26,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 21:12:26,438 INFO L134 CoverageAnalysis]: Checked inductivity of 120 backedges. 0 proven. 111 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2024-10-11 21:12:26,439 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 21:12:26,439 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [925098473] [2024-10-11 21:12:26,439 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [925098473] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-11 21:12:26,439 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [892097099] [2024-10-11 21:12:26,439 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 21:12:26,439 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 21:12:26,439 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-11 21:12:26,441 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-11 21:12:26,442 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2024-10-11 21:12:26,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 21:12:26,501 INFO L255 TraceCheckSpWp]: Trace formula consists of 150 conjuncts, 18 conjuncts are in the unsatisfiable core [2024-10-11 21:12:26,502 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 21:12:26,574 INFO L134 CoverageAnalysis]: Checked inductivity of 120 backedges. 0 proven. 111 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2024-10-11 21:12:26,574 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-11 21:12:26,768 INFO L134 CoverageAnalysis]: Checked inductivity of 120 backedges. 0 proven. 111 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2024-10-11 21:12:26,768 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [892097099] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-11 21:12:26,768 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-11 21:12:26,768 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12, 12] total 23 [2024-10-11 21:12:26,768 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1160874490] [2024-10-11 21:12:26,769 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-11 21:12:26,769 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2024-10-11 21:12:26,769 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 21:12:26,769 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2024-10-11 21:12:26,770 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=136, Invalid=416, Unknown=0, NotChecked=0, Total=552 [2024-10-11 21:12:26,770 INFO L87 Difference]: Start difference. First operand 2248 states and 4694 transitions. Second operand has 24 states, 23 states have (on average 3.608695652173913) internal successors, (83), 14 states have internal predecessors, (83), 10 states have call successors, (16), 10 states have call predecessors, (16), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 21:12:27,915 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-11 21:12:27,916 INFO L93 Difference]: Finished difference Result 6167 states and 13111 transitions. [2024-10-11 21:12:27,917 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2024-10-11 21:12:27,917 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 23 states have (on average 3.608695652173913) internal successors, (83), 14 states have internal predecessors, (83), 10 states have call successors, (16), 10 states have call predecessors, (16), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 56 [2024-10-11 21:12:27,917 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-11 21:12:27,982 INFO L225 Difference]: With dead ends: 6167 [2024-10-11 21:12:27,983 INFO L226 Difference]: Without dead ends: 6166 [2024-10-11 21:12:27,988 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 138 GetRequests, 106 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 180 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=311, Invalid=811, Unknown=0, NotChecked=0, Total=1122 [2024-10-11 21:12:27,989 INFO L432 NwaCegarLoop]: 28 mSDtfsCounter, 661 mSDsluCounter, 292 mSDsCounter, 0 mSdLazyCounter, 305 mSolverCounterSat, 161 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 664 SdHoareTripleChecker+Valid, 320 SdHoareTripleChecker+Invalid, 466 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 161 IncrementalHoareTripleChecker+Valid, 305 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-10-11 21:12:27,989 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [664 Valid, 320 Invalid, 466 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [161 Valid, 305 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-10-11 21:12:27,995 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6166 states. [2024-10-11 21:12:28,903 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6166 to 6082. [2024-10-11 21:12:28,914 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6082 states, 4221 states have (on average 1.0888415067519546) internal successors, (4596), 4303 states have internal predecessors, (4596), 1161 states have call successors, (1161), 231 states have call predecessors, (1161), 696 states have return successors, (6995), 1547 states have call predecessors, (6995), 1155 states have call successors, (6995) [2024-10-11 21:12:28,950 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6082 states to 6082 states and 12752 transitions. [2024-10-11 21:12:28,955 INFO L78 Accepts]: Start accepts. Automaton has 6082 states and 12752 transitions. Word has length 56 [2024-10-11 21:12:28,955 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-11 21:12:28,956 INFO L471 AbstractCegarLoop]: Abstraction has 6082 states and 12752 transitions. [2024-10-11 21:12:28,956 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 23 states have (on average 3.608695652173913) internal successors, (83), 14 states have internal predecessors, (83), 10 states have call successors, (16), 10 states have call predecessors, (16), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 21:12:28,956 INFO L276 IsEmpty]: Start isEmpty. Operand 6082 states and 12752 transitions. [2024-10-11 21:12:28,957 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2024-10-11 21:12:28,958 INFO L207 NwaCegarLoop]: Found error trace [2024-10-11 21:12:28,958 INFO L215 NwaCegarLoop]: trace histogram [6, 4, 4, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 21:12:28,975 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2024-10-11 21:12:29,158 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2024-10-11 21:12:29,159 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting ackermannErr6ASSERT_VIOLATIONINTEGER_OVERFLOW === [ackermannErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ackermannErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ackermannErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 5 more)] === [2024-10-11 21:12:29,159 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 21:12:29,159 INFO L85 PathProgramCache]: Analyzing trace with hash -959769808, now seen corresponding path program 1 times [2024-10-11 21:12:29,159 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 21:12:29,159 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [831686280] [2024-10-11 21:12:29,159 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 21:12:29,159 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 21:12:29,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 21:12:29,239 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2024-10-11 21:12:29,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 21:12:29,287 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2024-10-11 21:12:29,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 21:12:29,315 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-10-11 21:12:29,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 21:12:29,350 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2024-10-11 21:12:29,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 21:12:29,388 INFO L134 CoverageAnalysis]: Checked inductivity of 63 backedges. 36 proven. 6 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2024-10-11 21:12:29,389 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 21:12:29,389 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [831686280] [2024-10-11 21:12:29,389 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [831686280] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-11 21:12:29,389 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [291894426] [2024-10-11 21:12:29,389 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 21:12:29,389 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 21:12:29,389 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-11 21:12:29,391 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-11 21:12:29,393 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2024-10-11 21:12:29,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 21:12:29,449 INFO L255 TraceCheckSpWp]: Trace formula consists of 147 conjuncts, 15 conjuncts are in the unsatisfiable core [2024-10-11 21:12:29,451 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 21:12:29,499 INFO L134 CoverageAnalysis]: Checked inductivity of 63 backedges. 27 proven. 10 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2024-10-11 21:12:29,500 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-11 21:12:29,999 INFO L134 CoverageAnalysis]: Checked inductivity of 63 backedges. 40 proven. 2 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2024-10-11 21:12:29,999 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [291894426] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-11 21:12:29,999 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-11 21:12:29,999 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 11, 13] total 26 [2024-10-11 21:12:30,000 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1679089150] [2024-10-11 21:12:30,000 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-11 21:12:30,000 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2024-10-11 21:12:30,000 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 21:12:30,001 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2024-10-11 21:12:30,001 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=94, Invalid=608, Unknown=0, NotChecked=0, Total=702 [2024-10-11 21:12:30,001 INFO L87 Difference]: Start difference. First operand 6082 states and 12752 transitions. Second operand has 27 states, 26 states have (on average 2.3461538461538463) internal successors, (61), 21 states have internal predecessors, (61), 5 states have call successors, (7), 3 states have call predecessors, (7), 8 states have return successors, (9), 8 states have call predecessors, (9), 3 states have call successors, (9) [2024-10-11 21:12:33,998 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-11 21:12:33,998 INFO L93 Difference]: Finished difference Result 24357 states and 94286 transitions. [2024-10-11 21:12:33,998 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 57 states. [2024-10-11 21:12:33,998 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 26 states have (on average 2.3461538461538463) internal successors, (61), 21 states have internal predecessors, (61), 5 states have call successors, (7), 3 states have call predecessors, (7), 8 states have return successors, (9), 8 states have call predecessors, (9), 3 states have call successors, (9) Word has length 54 [2024-10-11 21:12:33,998 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-11 21:12:34,424 INFO L225 Difference]: With dead ends: 24357 [2024-10-11 21:12:34,424 INFO L226 Difference]: Without dead ends: 19149 [2024-10-11 21:12:34,589 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 179 GetRequests, 103 SyntacticMatches, 0 SemanticMatches, 76 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1241 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=1184, Invalid=4822, Unknown=0, NotChecked=0, Total=6006 [2024-10-11 21:12:34,589 INFO L432 NwaCegarLoop]: 37 mSDtfsCounter, 116 mSDsluCounter, 294 mSDsCounter, 0 mSdLazyCounter, 932 mSolverCounterSat, 116 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 116 SdHoareTripleChecker+Valid, 331 SdHoareTripleChecker+Invalid, 1048 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 116 IncrementalHoareTripleChecker+Valid, 932 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-10-11 21:12:34,590 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [116 Valid, 331 Invalid, 1048 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [116 Valid, 932 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-10-11 21:12:34,607 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19149 states. [2024-10-11 21:12:38,395 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19149 to 13375. [2024-10-11 21:12:38,425 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13375 states, 8765 states have (on average 1.057159155733029) internal successors, (9266), 8808 states have internal predecessors, (9266), 2669 states have call successors, (2669), 308 states have call predecessors, (2669), 1937 states have return successors, (37183), 4258 states have call predecessors, (37183), 2658 states have call successors, (37183) [2024-10-11 21:12:38,613 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13375 states to 13375 states and 49118 transitions. [2024-10-11 21:12:38,627 INFO L78 Accepts]: Start accepts. Automaton has 13375 states and 49118 transitions. Word has length 54 [2024-10-11 21:12:38,627 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-11 21:12:38,627 INFO L471 AbstractCegarLoop]: Abstraction has 13375 states and 49118 transitions. [2024-10-11 21:12:38,628 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 26 states have (on average 2.3461538461538463) internal successors, (61), 21 states have internal predecessors, (61), 5 states have call successors, (7), 3 states have call predecessors, (7), 8 states have return successors, (9), 8 states have call predecessors, (9), 3 states have call successors, (9) [2024-10-11 21:12:38,628 INFO L276 IsEmpty]: Start isEmpty. Operand 13375 states and 49118 transitions. [2024-10-11 21:12:38,630 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2024-10-11 21:12:38,630 INFO L207 NwaCegarLoop]: Found error trace [2024-10-11 21:12:38,630 INFO L215 NwaCegarLoop]: trace histogram [7, 7, 7, 7, 7, 6, 6, 6, 1, 1, 1, 1, 1] [2024-10-11 21:12:38,643 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Ended with exit code 0 [2024-10-11 21:12:38,830 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,15 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 21:12:38,831 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting ackermannErr6ASSERT_VIOLATIONINTEGER_OVERFLOW === [ackermannErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ackermannErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ackermannErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 5 more)] === [2024-10-11 21:12:38,831 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 21:12:38,831 INFO L85 PathProgramCache]: Analyzing trace with hash -1078600670, now seen corresponding path program 2 times [2024-10-11 21:12:38,831 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 21:12:38,831 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1988943018] [2024-10-11 21:12:38,831 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 21:12:38,831 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 21:12:38,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 21:12:39,028 INFO L134 CoverageAnalysis]: Checked inductivity of 156 backedges. 0 proven. 156 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 21:12:39,028 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 21:12:39,028 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1988943018] [2024-10-11 21:12:39,029 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1988943018] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-11 21:12:39,029 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1535055006] [2024-10-11 21:12:39,029 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-10-11 21:12:39,029 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 21:12:39,029 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-11 21:12:39,031 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-11 21:12:39,033 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2024-10-11 21:12:39,090 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-10-11 21:12:39,090 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-11 21:12:39,091 INFO L255 TraceCheckSpWp]: Trace formula consists of 140 conjuncts, 16 conjuncts are in the unsatisfiable core [2024-10-11 21:12:39,092 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 21:12:39,154 INFO L134 CoverageAnalysis]: Checked inductivity of 156 backedges. 0 proven. 156 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 21:12:39,154 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-11 21:12:39,445 INFO L134 CoverageAnalysis]: Checked inductivity of 156 backedges. 0 proven. 156 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 21:12:39,445 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1535055006] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-11 21:12:39,446 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-11 21:12:39,446 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16, 16] total 31 [2024-10-11 21:12:39,446 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [208231027] [2024-10-11 21:12:39,446 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-11 21:12:39,446 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2024-10-11 21:12:39,446 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 21:12:39,447 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2024-10-11 21:12:39,447 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=244, Invalid=748, Unknown=0, NotChecked=0, Total=992 [2024-10-11 21:12:39,447 INFO L87 Difference]: Start difference. First operand 13375 states and 49118 transitions. Second operand has 32 states, 29 states have (on average 3.4482758620689653) internal successors, (100), 18 states have internal predecessors, (100), 14 states have call successors, (14), 14 states have call predecessors, (14), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 21:12:43,588 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-11 21:12:43,588 INFO L93 Difference]: Finished difference Result 20224 states and 73220 transitions. [2024-10-11 21:12:43,589 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2024-10-11 21:12:43,589 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 29 states have (on average 3.4482758620689653) internal successors, (100), 18 states have internal predecessors, (100), 14 states have call successors, (14), 14 states have call predecessors, (14), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 58 [2024-10-11 21:12:43,589 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-11 21:12:43,878 INFO L225 Difference]: With dead ends: 20224 [2024-10-11 21:12:43,878 INFO L226 Difference]: Without dead ends: 20223 [2024-10-11 21:12:43,903 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 144 GetRequests, 100 SyntacticMatches, 0 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 364 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=573, Invalid=1497, Unknown=0, NotChecked=0, Total=2070 [2024-10-11 21:12:43,904 INFO L432 NwaCegarLoop]: 22 mSDtfsCounter, 505 mSDsluCounter, 372 mSDsCounter, 0 mSdLazyCounter, 431 mSolverCounterSat, 119 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 520 SdHoareTripleChecker+Valid, 394 SdHoareTripleChecker+Invalid, 550 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 119 IncrementalHoareTripleChecker+Valid, 431 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-10-11 21:12:43,904 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [520 Valid, 394 Invalid, 550 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [119 Valid, 431 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-10-11 21:12:43,929 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20223 states. [2024-10-11 21:12:48,163 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20223 to 19839. [2024-10-11 21:12:48,205 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19839 states, 13021 states have (on average 1.049535365947316) internal successors, (13666), 13128 states have internal predecessors, (13666), 3917 states have call successors, (3917), 452 states have call predecessors, (3917), 2897 states have return successors, (53631), 6258 states have call predecessors, (53631), 3906 states have call successors, (53631) [2024-10-11 21:12:48,808 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19839 states to 19839 states and 71214 transitions. [2024-10-11 21:12:48,825 INFO L78 Accepts]: Start accepts. Automaton has 19839 states and 71214 transitions. Word has length 58 [2024-10-11 21:12:48,826 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-11 21:12:48,826 INFO L471 AbstractCegarLoop]: Abstraction has 19839 states and 71214 transitions. [2024-10-11 21:12:48,826 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 29 states have (on average 3.4482758620689653) internal successors, (100), 18 states have internal predecessors, (100), 14 states have call successors, (14), 14 states have call predecessors, (14), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 21:12:48,826 INFO L276 IsEmpty]: Start isEmpty. Operand 19839 states and 71214 transitions. [2024-10-11 21:12:48,830 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2024-10-11 21:12:48,830 INFO L207 NwaCegarLoop]: Found error trace [2024-10-11 21:12:48,831 INFO L215 NwaCegarLoop]: trace histogram [9, 7, 5, 5, 5, 5, 4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 21:12:48,849 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Ended with exit code 0 [2024-10-11 21:12:49,034 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,16 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 21:12:49,035 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting ackermannErr6ASSERT_VIOLATIONINTEGER_OVERFLOW === [ackermannErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ackermannErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ackermannErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 5 more)] === [2024-10-11 21:12:49,035 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 21:12:49,036 INFO L85 PathProgramCache]: Analyzing trace with hash -999752591, now seen corresponding path program 2 times [2024-10-11 21:12:49,036 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 21:12:49,036 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1348798839] [2024-10-11 21:12:49,036 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 21:12:49,036 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 21:12:49,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 21:12:49,172 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2024-10-11 21:12:49,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 21:12:49,226 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-10-11 21:12:49,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 21:12:49,269 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2024-10-11 21:12:49,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 21:12:49,298 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-10-11 21:12:49,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 21:12:49,333 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2024-10-11 21:12:49,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 21:12:49,366 INFO L134 CoverageAnalysis]: Checked inductivity of 163 backedges. 86 proven. 16 refuted. 0 times theorem prover too weak. 61 trivial. 0 not checked. [2024-10-11 21:12:49,367 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 21:12:49,367 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1348798839] [2024-10-11 21:12:49,367 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1348798839] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-11 21:12:49,367 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1637407979] [2024-10-11 21:12:49,367 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-10-11 21:12:49,367 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 21:12:49,367 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-11 21:12:49,369 INFO L229 MonitoredProcess]: Starting monitored process 17 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-11 21:12:49,371 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2024-10-11 21:12:49,438 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-10-11 21:12:49,438 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-11 21:12:49,439 INFO L255 TraceCheckSpWp]: Trace formula consists of 201 conjuncts, 19 conjuncts are in the unsatisfiable core [2024-10-11 21:12:49,441 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 21:12:49,501 INFO L134 CoverageAnalysis]: Checked inductivity of 163 backedges. 75 proven. 22 refuted. 0 times theorem prover too weak. 66 trivial. 0 not checked. [2024-10-11 21:12:49,502 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-11 21:12:50,211 INFO L134 CoverageAnalysis]: Checked inductivity of 163 backedges. 94 proven. 8 refuted. 0 times theorem prover too weak. 61 trivial. 0 not checked. [2024-10-11 21:12:50,211 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1637407979] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-11 21:12:50,211 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-11 21:12:50,212 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 14, 16] total 32 [2024-10-11 21:12:50,212 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2053270398] [2024-10-11 21:12:50,212 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-11 21:12:50,212 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2024-10-11 21:12:50,213 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 21:12:50,213 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2024-10-11 21:12:50,214 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=126, Invalid=930, Unknown=0, NotChecked=0, Total=1056 [2024-10-11 21:12:50,214 INFO L87 Difference]: Start difference. First operand 19839 states and 71214 transitions. Second operand has 33 states, 32 states have (on average 2.40625) internal successors, (77), 23 states have internal predecessors, (77), 7 states have call successors, (9), 5 states have call predecessors, (9), 8 states have return successors, (11), 10 states have call predecessors, (11), 3 states have call successors, (11) [2024-10-11 21:12:53,278 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-11 21:12:53,278 INFO L93 Difference]: Finished difference Result 30264 states and 111647 transitions. [2024-10-11 21:12:53,279 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2024-10-11 21:12:53,279 INFO L78 Accepts]: Start accepts. Automaton has has 33 states, 32 states have (on average 2.40625) internal successors, (77), 23 states have internal predecessors, (77), 7 states have call successors, (9), 5 states have call predecessors, (9), 8 states have return successors, (11), 10 states have call predecessors, (11), 3 states have call successors, (11) Word has length 79 [2024-10-11 21:12:53,279 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-11 21:12:53,384 INFO L225 Difference]: With dead ends: 30264 [2024-10-11 21:12:53,384 INFO L226 Difference]: Without dead ends: 12259 [2024-10-11 21:12:54,018 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 211 GetRequests, 154 SyntacticMatches, 0 SemanticMatches, 57 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 541 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=608, Invalid=2814, Unknown=0, NotChecked=0, Total=3422 [2024-10-11 21:12:54,019 INFO L432 NwaCegarLoop]: 39 mSDtfsCounter, 135 mSDsluCounter, 282 mSDsCounter, 0 mSdLazyCounter, 700 mSolverCounterSat, 97 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 135 SdHoareTripleChecker+Valid, 321 SdHoareTripleChecker+Invalid, 797 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 97 IncrementalHoareTripleChecker+Valid, 700 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-10-11 21:12:54,019 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [135 Valid, 321 Invalid, 797 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [97 Valid, 700 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-10-11 21:12:54,024 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12259 states. [2024-10-11 21:12:55,959 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12259 to 11691. [2024-10-11 21:12:55,971 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11691 states, 8104 states have (on average 1.0737907206317867) internal successors, (8702), 8383 states have internal predecessors, (8702), 2284 states have call successors, (2284), 476 states have call predecessors, (2284), 1299 states have return successors, (7789), 2831 states have call predecessors, (7789), 2276 states have call successors, (7789) [2024-10-11 21:12:56,026 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11691 states to 11691 states and 18775 transitions. [2024-10-11 21:12:56,039 INFO L78 Accepts]: Start accepts. Automaton has 11691 states and 18775 transitions. Word has length 79 [2024-10-11 21:12:56,040 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-11 21:12:56,040 INFO L471 AbstractCegarLoop]: Abstraction has 11691 states and 18775 transitions. [2024-10-11 21:12:56,040 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 33 states, 32 states have (on average 2.40625) internal successors, (77), 23 states have internal predecessors, (77), 7 states have call successors, (9), 5 states have call predecessors, (9), 8 states have return successors, (11), 10 states have call predecessors, (11), 3 states have call successors, (11) [2024-10-11 21:12:56,040 INFO L276 IsEmpty]: Start isEmpty. Operand 11691 states and 18775 transitions. [2024-10-11 21:12:56,043 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2024-10-11 21:12:56,043 INFO L207 NwaCegarLoop]: Found error trace [2024-10-11 21:12:56,043 INFO L215 NwaCegarLoop]: trace histogram [8, 7, 6, 6, 6, 5, 5, 5, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 21:12:56,061 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Forceful destruction successful, exit code 0 [2024-10-11 21:12:56,247 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable20 [2024-10-11 21:12:56,248 INFO L396 AbstractCegarLoop]: === Iteration 22 === Targeting ackermannErr6ASSERT_VIOLATIONINTEGER_OVERFLOW === [ackermannErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ackermannErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ackermannErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 5 more)] === [2024-10-11 21:12:56,249 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 21:12:56,249 INFO L85 PathProgramCache]: Analyzing trace with hash -307523056, now seen corresponding path program 3 times [2024-10-11 21:12:56,249 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 21:12:56,249 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1184653846] [2024-10-11 21:12:56,249 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 21:12:56,249 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 21:12:56,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 21:12:56,400 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2024-10-11 21:12:56,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 21:12:56,429 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-10-11 21:12:56,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 21:12:56,469 INFO L134 CoverageAnalysis]: Checked inductivity of 144 backedges. 62 proven. 77 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-10-11 21:12:56,470 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 21:12:56,470 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1184653846] [2024-10-11 21:12:56,470 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1184653846] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-11 21:12:56,470 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [788335476] [2024-10-11 21:12:56,470 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-10-11 21:12:56,471 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 21:12:56,471 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-11 21:12:56,472 INFO L229 MonitoredProcess]: Starting monitored process 18 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-11 21:12:56,474 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2024-10-11 21:12:56,548 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 8 check-sat command(s) [2024-10-11 21:12:56,548 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-11 21:12:56,549 INFO L255 TraceCheckSpWp]: Trace formula consists of 167 conjuncts, 17 conjuncts are in the unsatisfiable core [2024-10-11 21:12:56,551 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 21:12:56,635 INFO L134 CoverageAnalysis]: Checked inductivity of 144 backedges. 60 proven. 79 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-10-11 21:12:56,636 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-11 21:12:57,000 INFO L134 CoverageAnalysis]: Checked inductivity of 144 backedges. 64 proven. 75 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-10-11 21:12:57,000 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [788335476] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-11 21:12:57,001 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-11 21:12:57,001 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16, 16] total 33 [2024-10-11 21:12:57,001 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [908728466] [2024-10-11 21:12:57,001 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-11 21:12:57,001 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2024-10-11 21:12:57,001 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 21:12:57,002 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2024-10-11 21:12:57,002 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=173, Invalid=949, Unknown=0, NotChecked=0, Total=1122 [2024-10-11 21:12:57,003 INFO L87 Difference]: Start difference. First operand 11691 states and 18775 transitions. Second operand has 34 states, 33 states have (on average 3.090909090909091) internal successors, (102), 22 states have internal predecessors, (102), 11 states have call successors, (13), 11 states have call predecessors, (13), 5 states have return successors, (5), 4 states have call predecessors, (5), 1 states have call successors, (5) [2024-10-11 21:12:58,937 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-11 21:12:58,937 INFO L93 Difference]: Finished difference Result 12446 states and 19917 transitions. [2024-10-11 21:12:58,937 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2024-10-11 21:12:58,938 INFO L78 Accepts]: Start accepts. Automaton has has 34 states, 33 states have (on average 3.090909090909091) internal successors, (102), 22 states have internal predecessors, (102), 11 states have call successors, (13), 11 states have call predecessors, (13), 5 states have return successors, (5), 4 states have call predecessors, (5), 1 states have call successors, (5) Word has length 67 [2024-10-11 21:12:58,938 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-11 21:12:58,994 INFO L225 Difference]: With dead ends: 12446 [2024-10-11 21:12:58,994 INFO L226 Difference]: Without dead ends: 12445 [2024-10-11 21:12:59,001 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 174 GetRequests, 125 SyntacticMatches, 0 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 492 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=499, Invalid=2051, Unknown=0, NotChecked=0, Total=2550 [2024-10-11 21:12:59,002 INFO L432 NwaCegarLoop]: 32 mSDtfsCounter, 174 mSDsluCounter, 244 mSDsCounter, 0 mSdLazyCounter, 480 mSolverCounterSat, 144 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 174 SdHoareTripleChecker+Valid, 276 SdHoareTripleChecker+Invalid, 624 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 144 IncrementalHoareTripleChecker+Valid, 480 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-10-11 21:12:59,002 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [174 Valid, 276 Invalid, 624 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [144 Valid, 480 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-10-11 21:12:59,009 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12445 states. [2024-10-11 21:13:01,064 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12445 to 11799. [2024-10-11 21:13:01,073 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11799 states, 8176 states have (on average 1.0699608610567515) internal successors, (8748), 8455 states have internal predecessors, (8748), 2284 states have call successors, (2284), 476 states have call predecessors, (2284), 1335 states have return successors, (7883), 2867 states have call predecessors, (7883), 2276 states have call successors, (7883) [2024-10-11 21:13:01,114 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11799 states to 11799 states and 18915 transitions. [2024-10-11 21:13:01,123 INFO L78 Accepts]: Start accepts. Automaton has 11799 states and 18915 transitions. Word has length 67 [2024-10-11 21:13:01,123 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-11 21:13:01,123 INFO L471 AbstractCegarLoop]: Abstraction has 11799 states and 18915 transitions. [2024-10-11 21:13:01,123 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 33 states have (on average 3.090909090909091) internal successors, (102), 22 states have internal predecessors, (102), 11 states have call successors, (13), 11 states have call predecessors, (13), 5 states have return successors, (5), 4 states have call predecessors, (5), 1 states have call successors, (5) [2024-10-11 21:13:01,123 INFO L276 IsEmpty]: Start isEmpty. Operand 11799 states and 18915 transitions. [2024-10-11 21:13:01,126 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2024-10-11 21:13:01,126 INFO L207 NwaCegarLoop]: Found error trace [2024-10-11 21:13:01,126 INFO L215 NwaCegarLoop]: trace histogram [12, 8, 7, 6, 6, 6, 6, 6, 6, 4, 4, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1] [2024-10-11 21:13:01,139 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Forceful destruction successful, exit code 0 [2024-10-11 21:13:01,326 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21,18 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 21:13:01,327 INFO L396 AbstractCegarLoop]: === Iteration 23 === Targeting ackermannErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ackermannErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ackermannErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ackermannErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 5 more)] === [2024-10-11 21:13:01,327 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 21:13:01,327 INFO L85 PathProgramCache]: Analyzing trace with hash 2143415402, now seen corresponding path program 2 times [2024-10-11 21:13:01,328 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 21:13:01,328 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [191407008] [2024-10-11 21:13:01,328 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 21:13:01,328 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 21:13:01,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 21:13:01,394 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2024-10-11 21:13:01,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 21:13:01,432 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-10-11 21:13:01,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 21:13:01,476 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2024-10-11 21:13:01,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 21:13:01,510 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2024-10-11 21:13:01,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 21:13:01,537 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-10-11 21:13:01,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 21:13:01,541 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2024-10-11 21:13:01,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 21:13:01,545 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2024-10-11 21:13:01,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 21:13:01,548 INFO L134 CoverageAnalysis]: Checked inductivity of 300 backedges. 137 proven. 28 refuted. 0 times theorem prover too weak. 135 trivial. 0 not checked. [2024-10-11 21:13:01,549 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 21:13:01,549 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [191407008] [2024-10-11 21:13:01,549 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [191407008] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-11 21:13:01,549 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [234457352] [2024-10-11 21:13:01,549 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-10-11 21:13:01,549 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 21:13:01,549 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-11 21:13:01,551 INFO L229 MonitoredProcess]: Starting monitored process 19 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-11 21:13:01,553 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2024-10-11 21:13:01,638 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-10-11 21:13:01,638 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-11 21:13:01,640 INFO L255 TraceCheckSpWp]: Trace formula consists of 260 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-10-11 21:13:01,642 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 21:13:01,701 INFO L134 CoverageAnalysis]: Checked inductivity of 300 backedges. 139 proven. 15 refuted. 0 times theorem prover too weak. 146 trivial. 0 not checked. [2024-10-11 21:13:01,702 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-11 21:13:01,989 INFO L134 CoverageAnalysis]: Checked inductivity of 300 backedges. 139 proven. 26 refuted. 0 times theorem prover too weak. 135 trivial. 0 not checked. [2024-10-11 21:13:01,990 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [234457352] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-11 21:13:01,990 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-11 21:13:01,990 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 6, 8] total 14 [2024-10-11 21:13:01,990 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [303520178] [2024-10-11 21:13:01,990 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-11 21:13:01,991 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-10-11 21:13:01,991 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 21:13:01,991 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-10-11 21:13:01,992 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=132, Unknown=0, NotChecked=0, Total=182 [2024-10-11 21:13:01,992 INFO L87 Difference]: Start difference. First operand 11799 states and 18915 transitions. Second operand has 14 states, 14 states have (on average 5.928571428571429) internal successors, (83), 14 states have internal predecessors, (83), 12 states have call successors, (14), 2 states have call predecessors, (14), 7 states have return successors, (14), 6 states have call predecessors, (14), 11 states have call successors, (14) [2024-10-11 21:13:03,918 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-11 21:13:03,918 INFO L93 Difference]: Finished difference Result 22583 states and 40812 transitions. [2024-10-11 21:13:03,918 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-10-11 21:13:03,918 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 5.928571428571429) internal successors, (83), 14 states have internal predecessors, (83), 12 states have call successors, (14), 2 states have call predecessors, (14), 7 states have return successors, (14), 6 states have call predecessors, (14), 11 states have call successors, (14) Word has length 104 [2024-10-11 21:13:03,919 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-11 21:13:03,998 INFO L225 Difference]: With dead ends: 22583 [2024-10-11 21:13:03,999 INFO L226 Difference]: Without dead ends: 12983 [2024-10-11 21:13:04,087 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 231 GetRequests, 213 SyntacticMatches, 3 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 61 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=87, Invalid=185, Unknown=0, NotChecked=0, Total=272 [2024-10-11 21:13:04,088 INFO L432 NwaCegarLoop]: 30 mSDtfsCounter, 62 mSDsluCounter, 62 mSDsCounter, 0 mSdLazyCounter, 130 mSolverCounterSat, 27 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 64 SdHoareTripleChecker+Valid, 92 SdHoareTripleChecker+Invalid, 157 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 27 IncrementalHoareTripleChecker+Valid, 130 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-11 21:13:04,089 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [64 Valid, 92 Invalid, 157 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [27 Valid, 130 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-11 21:13:04,096 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12983 states. [2024-10-11 21:13:05,886 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12983 to 11793. [2024-10-11 21:13:05,896 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11793 states, 8173 states have (on average 1.0699865410497982) internal successors, (8745), 8452 states have internal predecessors, (8745), 2281 states have call successors, (2281), 476 states have call predecessors, (2281), 1335 states have return successors, (7803), 2864 states have call predecessors, (7803), 2246 states have call successors, (7803) [2024-10-11 21:13:05,931 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11793 states to 11793 states and 18829 transitions. [2024-10-11 21:13:05,940 INFO L78 Accepts]: Start accepts. Automaton has 11793 states and 18829 transitions. Word has length 104 [2024-10-11 21:13:05,940 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-11 21:13:05,940 INFO L471 AbstractCegarLoop]: Abstraction has 11793 states and 18829 transitions. [2024-10-11 21:13:05,940 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 5.928571428571429) internal successors, (83), 14 states have internal predecessors, (83), 12 states have call successors, (14), 2 states have call predecessors, (14), 7 states have return successors, (14), 6 states have call predecessors, (14), 11 states have call successors, (14) [2024-10-11 21:13:05,941 INFO L276 IsEmpty]: Start isEmpty. Operand 11793 states and 18829 transitions. [2024-10-11 21:13:05,945 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2024-10-11 21:13:05,946 INFO L207 NwaCegarLoop]: Found error trace [2024-10-11 21:13:05,946 INFO L215 NwaCegarLoop]: trace histogram [11, 9, 6, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1] [2024-10-11 21:13:05,963 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Ended with exit code 0 [2024-10-11 21:13:06,150 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable22 [2024-10-11 21:13:06,151 INFO L396 AbstractCegarLoop]: === Iteration 24 === Targeting ackermannErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ackermannErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ackermannErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ackermannErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 5 more)] === [2024-10-11 21:13:06,152 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 21:13:06,152 INFO L85 PathProgramCache]: Analyzing trace with hash 872239358, now seen corresponding path program 3 times [2024-10-11 21:13:06,152 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 21:13:06,152 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [48463777] [2024-10-11 21:13:06,152 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 21:13:06,153 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 21:13:06,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 21:13:06,225 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2024-10-11 21:13:06,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 21:13:06,287 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2024-10-11 21:13:06,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 21:13:06,332 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2024-10-11 21:13:06,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 21:13:06,378 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-10-11 21:13:06,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 21:13:06,414 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2024-10-11 21:13:06,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 21:13:06,469 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-10-11 21:13:06,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 21:13:06,491 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2024-10-11 21:13:06,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 21:13:06,495 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2024-10-11 21:13:06,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 21:13:06,505 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2024-10-11 21:13:06,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 21:13:06,508 INFO L134 CoverageAnalysis]: Checked inductivity of 266 backedges. 117 proven. 51 refuted. 0 times theorem prover too weak. 98 trivial. 0 not checked. [2024-10-11 21:13:06,508 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 21:13:06,508 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [48463777] [2024-10-11 21:13:06,508 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [48463777] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-11 21:13:06,508 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1835213902] [2024-10-11 21:13:06,508 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-10-11 21:13:06,509 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 21:13:06,509 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-11 21:13:06,511 INFO L229 MonitoredProcess]: Starting monitored process 20 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-11 21:13:06,512 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2024-10-11 21:13:06,591 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s) [2024-10-11 21:13:06,591 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-11 21:13:06,593 INFO L255 TraceCheckSpWp]: Trace formula consists of 226 conjuncts, 12 conjuncts are in the unsatisfiable core [2024-10-11 21:13:06,595 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 21:13:06,673 INFO L134 CoverageAnalysis]: Checked inductivity of 266 backedges. 153 proven. 26 refuted. 0 times theorem prover too weak. 87 trivial. 0 not checked. [2024-10-11 21:13:06,673 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-11 21:13:07,343 INFO L134 CoverageAnalysis]: Checked inductivity of 266 backedges. 123 proven. 57 refuted. 0 times theorem prover too weak. 86 trivial. 0 not checked. [2024-10-11 21:13:07,344 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1835213902] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-11 21:13:07,344 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-11 21:13:07,344 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 11] total 17 [2024-10-11 21:13:07,344 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1543890445] [2024-10-11 21:13:07,344 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-11 21:13:07,345 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2024-10-11 21:13:07,345 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 21:13:07,345 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2024-10-11 21:13:07,346 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=70, Invalid=202, Unknown=0, NotChecked=0, Total=272 [2024-10-11 21:13:07,346 INFO L87 Difference]: Start difference. First operand 11793 states and 18829 transitions. Second operand has 17 states, 17 states have (on average 4.882352941176471) internal successors, (83), 17 states have internal predecessors, (83), 9 states have call successors, (14), 2 states have call predecessors, (14), 7 states have return successors, (17), 5 states have call predecessors, (17), 9 states have call successors, (17) [2024-10-11 21:13:09,962 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-11 21:13:09,963 INFO L93 Difference]: Finished difference Result 24298 states and 49195 transitions. [2024-10-11 21:13:09,963 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-10-11 21:13:09,963 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 4.882352941176471) internal successors, (83), 17 states have internal predecessors, (83), 9 states have call successors, (14), 2 states have call predecessors, (14), 7 states have return successors, (17), 5 states have call predecessors, (17), 9 states have call successors, (17) Word has length 99 [2024-10-11 21:13:09,963 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-11 21:13:10,035 INFO L225 Difference]: With dead ends: 24298 [2024-10-11 21:13:10,035 INFO L226 Difference]: Without dead ends: 14732 [2024-10-11 21:13:10,087 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 228 GetRequests, 205 SyntacticMatches, 6 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 88 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=98, Invalid=244, Unknown=0, NotChecked=0, Total=342 [2024-10-11 21:13:10,088 INFO L432 NwaCegarLoop]: 32 mSDtfsCounter, 56 mSDsluCounter, 105 mSDsCounter, 0 mSdLazyCounter, 205 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 58 SdHoareTripleChecker+Valid, 137 SdHoareTripleChecker+Invalid, 229 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 205 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-11 21:13:10,088 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [58 Valid, 137 Invalid, 229 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 205 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-11 21:13:10,096 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14732 states. [2024-10-11 21:13:12,194 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14732 to 14371. [2024-10-11 21:13:12,205 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14371 states, 9691 states have (on average 1.0522133938706015) internal successors, (10197), 9950 states have internal predecessors, (10197), 2881 states have call successors, (2881), 496 states have call predecessors, (2881), 1795 states have return successors, (9707), 3924 states have call predecessors, (9707), 2826 states have call successors, (9707) [2024-10-11 21:13:12,386 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14371 states to 14371 states and 22785 transitions. [2024-10-11 21:13:12,398 INFO L78 Accepts]: Start accepts. Automaton has 14371 states and 22785 transitions. Word has length 99 [2024-10-11 21:13:12,399 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-11 21:13:12,399 INFO L471 AbstractCegarLoop]: Abstraction has 14371 states and 22785 transitions. [2024-10-11 21:13:12,399 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 4.882352941176471) internal successors, (83), 17 states have internal predecessors, (83), 9 states have call successors, (14), 2 states have call predecessors, (14), 7 states have return successors, (17), 5 states have call predecessors, (17), 9 states have call successors, (17) [2024-10-11 21:13:12,399 INFO L276 IsEmpty]: Start isEmpty. Operand 14371 states and 22785 transitions. [2024-10-11 21:13:12,406 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2024-10-11 21:13:12,406 INFO L207 NwaCegarLoop]: Found error trace [2024-10-11 21:13:12,406 INFO L215 NwaCegarLoop]: trace histogram [10, 8, 7, 7, 7, 6, 6, 6, 4, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 21:13:12,423 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Forceful destruction successful, exit code 0 [2024-10-11 21:13:12,607 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23,20 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 21:13:12,607 INFO L396 AbstractCegarLoop]: === Iteration 25 === Targeting ackermannErr6ASSERT_VIOLATIONINTEGER_OVERFLOW === [ackermannErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ackermannErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ackermannErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 5 more)] === [2024-10-11 21:13:12,607 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 21:13:12,608 INFO L85 PathProgramCache]: Analyzing trace with hash 35205768, now seen corresponding path program 3 times [2024-10-11 21:13:12,608 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 21:13:12,608 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [571978727] [2024-10-11 21:13:12,608 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 21:13:12,608 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 21:13:12,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 21:13:12,831 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2024-10-11 21:13:12,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 21:13:12,893 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2024-10-11 21:13:12,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 21:13:12,928 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-10-11 21:13:12,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 21:13:12,972 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2024-10-11 21:13:12,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 21:13:13,013 INFO L134 CoverageAnalysis]: Checked inductivity of 227 backedges. 120 proven. 86 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2024-10-11 21:13:13,013 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 21:13:13,014 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [571978727] [2024-10-11 21:13:13,014 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [571978727] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-11 21:13:13,014 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1250421191] [2024-10-11 21:13:13,014 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-10-11 21:13:13,014 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 21:13:13,015 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-11 21:13:13,016 INFO L229 MonitoredProcess]: Starting monitored process 21 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-11 21:13:13,018 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2024-10-11 21:13:13,107 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 9 check-sat command(s) [2024-10-11 21:13:13,108 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-11 21:13:13,109 INFO L255 TraceCheckSpWp]: Trace formula consists of 204 conjuncts, 31 conjuncts are in the unsatisfiable core [2024-10-11 21:13:13,111 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 21:13:13,256 INFO L134 CoverageAnalysis]: Checked inductivity of 227 backedges. 113 proven. 41 refuted. 0 times theorem prover too weak. 73 trivial. 0 not checked. [2024-10-11 21:13:13,257 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-11 21:13:13,419 INFO L134 CoverageAnalysis]: Checked inductivity of 227 backedges. 142 proven. 13 refuted. 0 times theorem prover too weak. 72 trivial. 0 not checked. [2024-10-11 21:13:13,419 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1250421191] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-11 21:13:13,419 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-11 21:13:13,419 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 7, 8] total 29 [2024-10-11 21:13:13,419 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [65722475] [2024-10-11 21:13:13,420 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-11 21:13:13,420 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2024-10-11 21:13:13,420 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 21:13:13,421 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2024-10-11 21:13:13,421 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=89, Invalid=723, Unknown=0, NotChecked=0, Total=812 [2024-10-11 21:13:13,421 INFO L87 Difference]: Start difference. First operand 14371 states and 22785 transitions. Second operand has 29 states, 29 states have (on average 3.6206896551724137) internal successors, (105), 22 states have internal predecessors, (105), 11 states have call successors, (15), 7 states have call predecessors, (15), 7 states have return successors, (10), 9 states have call predecessors, (10), 4 states have call successors, (10)