./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/EvenOdd01-1.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/EvenOdd01-1.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 90982c548a5fc18702a6b533ab589c969b87a7efde724f265c9d2a7d593347dc --- Real Ultimate output --- This is Ultimate 0.2.5-dev-84cfde4 [2024-10-11 21:12:21,193 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-10-11 21:12:21,262 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf [2024-10-11 21:12:21,267 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-10-11 21:12:21,267 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-10-11 21:12:21,289 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-10-11 21:12:21,291 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-10-11 21:12:21,291 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-10-11 21:12:21,292 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-10-11 21:12:21,292 INFO L153 SettingsManager]: * Use memory slicer=true [2024-10-11 21:12:21,293 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-10-11 21:12:21,293 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-10-11 21:12:21,294 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-10-11 21:12:21,294 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-10-11 21:12:21,296 INFO L153 SettingsManager]: * Use SBE=true [2024-10-11 21:12:21,296 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-10-11 21:12:21,296 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-10-11 21:12:21,296 INFO L153 SettingsManager]: * sizeof long=4 [2024-10-11 21:12:21,296 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-10-11 21:12:21,297 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-10-11 21:12:21,297 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-10-11 21:12:21,297 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-10-11 21:12:21,297 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-10-11 21:12:21,298 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-10-11 21:12:21,298 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-10-11 21:12:21,298 INFO L153 SettingsManager]: * Check absence of signed integer overflows=ASSERTandASSUME [2024-10-11 21:12:21,298 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-10-11 21:12:21,298 INFO L153 SettingsManager]: * sizeof long double=12 [2024-10-11 21:12:21,299 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-10-11 21:12:21,299 INFO L153 SettingsManager]: * Use constant arrays=true [2024-10-11 21:12:21,299 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-10-11 21:12:21,299 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-10-11 21:12:21,299 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-10-11 21:12:21,300 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-10-11 21:12:21,300 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-11 21:12:21,300 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-10-11 21:12:21,300 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-10-11 21:12:21,300 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-10-11 21:12:21,300 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-10-11 21:12:21,301 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-10-11 21:12:21,301 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-10-11 21:12:21,301 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-10-11 21:12:21,301 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-10-11 21:12:21,301 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-10-11 21:12:21,301 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 90982c548a5fc18702a6b533ab589c969b87a7efde724f265c9d2a7d593347dc [2024-10-11 21:12:21,490 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-10-11 21:12:21,509 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-10-11 21:12:21,512 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-10-11 21:12:21,512 INFO L270 PluginConnector]: Initializing CDTParser... [2024-10-11 21:12:21,513 INFO L274 PluginConnector]: CDTParser initialized [2024-10-11 21:12:21,513 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/recursive/EvenOdd01-1.c [2024-10-11 21:12:23,337 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-10-11 21:12:23,479 INFO L384 CDTParser]: Found 1 translation units. [2024-10-11 21:12:23,480 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/recursive/EvenOdd01-1.c [2024-10-11 21:12:23,485 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/data/42414ee98/6bbf279f69ba46108a90b1da88f0adfc/FLAGa6f137942 [2024-10-11 21:12:23,892 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/data/42414ee98/6bbf279f69ba46108a90b1da88f0adfc [2024-10-11 21:12:23,895 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-10-11 21:12:23,896 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-10-11 21:12:23,899 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-10-11 21:12:23,899 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-10-11 21:12:23,903 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-10-11 21:12:23,904 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.10 09:12:23" (1/1) ... [2024-10-11 21:12:23,906 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3c112f0a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 09:12:23, skipping insertion in model container [2024-10-11 21:12:23,906 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.10 09:12:23" (1/1) ... [2024-10-11 21:12:23,920 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-10-11 21:12:24,050 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-11 21:12:24,063 INFO L200 MainTranslator]: Completed pre-run [2024-10-11 21:12:24,075 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-11 21:12:24,092 INFO L204 MainTranslator]: Completed translation [2024-10-11 21:12:24,093 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 09:12:24 WrapperNode [2024-10-11 21:12:24,094 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-10-11 21:12:24,094 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-10-11 21:12:24,095 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-10-11 21:12:24,095 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-10-11 21:12:24,100 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 09:12:24" (1/1) ... [2024-10-11 21:12:24,108 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 09:12:24" (1/1) ... [2024-10-11 21:12:24,120 INFO L138 Inliner]: procedures = 14, calls = 11, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 28 [2024-10-11 21:12:24,121 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-10-11 21:12:24,122 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-10-11 21:12:24,122 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-10-11 21:12:24,122 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-10-11 21:12:24,129 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 09:12:24" (1/1) ... [2024-10-11 21:12:24,130 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 09:12:24" (1/1) ... [2024-10-11 21:12:24,131 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 09:12:24" (1/1) ... [2024-10-11 21:12:24,139 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 21:12:24,139 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 09:12:24" (1/1) ... [2024-10-11 21:12:24,139 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 09:12:24" (1/1) ... [2024-10-11 21:12:24,141 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 09:12:24" (1/1) ... [2024-10-11 21:12:24,143 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 09:12:24" (1/1) ... [2024-10-11 21:12:24,143 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 09:12:24" (1/1) ... [2024-10-11 21:12:24,144 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 09:12:24" (1/1) ... [2024-10-11 21:12:24,145 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-10-11 21:12:24,146 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-10-11 21:12:24,147 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-10-11 21:12:24,147 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-10-11 21:12:24,148 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 09:12:24" (1/1) ... [2024-10-11 21:12:24,152 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-11 21:12:24,159 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-11 21:12:24,177 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 21:12:24,179 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 21:12:24,211 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-10-11 21:12:24,211 INFO L130 BoogieDeclarations]: Found specification of procedure isEven [2024-10-11 21:12:24,212 INFO L138 BoogieDeclarations]: Found implementation of procedure isEven [2024-10-11 21:12:24,212 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-10-11 21:12:24,212 INFO L130 BoogieDeclarations]: Found specification of procedure isOdd [2024-10-11 21:12:24,212 INFO L138 BoogieDeclarations]: Found implementation of procedure isOdd [2024-10-11 21:12:24,212 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-10-11 21:12:24,212 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-10-11 21:12:24,262 INFO L238 CfgBuilder]: Building ICFG [2024-10-11 21:12:24,265 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-10-11 21:12:24,400 INFO L? ?]: Removed 16 outVars from TransFormulas that were not future-live. [2024-10-11 21:12:24,401 INFO L287 CfgBuilder]: Performing block encoding [2024-10-11 21:12:24,427 INFO L309 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-10-11 21:12:24,427 INFO L314 CfgBuilder]: Removed 0 assume(true) statements. [2024-10-11 21:12:24,428 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.10 09:12:24 BoogieIcfgContainer [2024-10-11 21:12:24,428 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-10-11 21:12:24,429 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-10-11 21:12:24,429 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-10-11 21:12:24,432 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-10-11 21:12:24,433 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 11.10 09:12:23" (1/3) ... [2024-10-11 21:12:24,433 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1f240625 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.10 09:12:24, skipping insertion in model container [2024-10-11 21:12:24,434 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 09:12:24" (2/3) ... [2024-10-11 21:12:24,434 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1f240625 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.10 09:12:24, skipping insertion in model container [2024-10-11 21:12:24,435 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.10 09:12:24" (3/3) ... [2024-10-11 21:12:24,436 INFO L112 eAbstractionObserver]: Analyzing ICFG EvenOdd01-1.c [2024-10-11 21:12:24,448 INFO L209 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-10-11 21:12:24,448 INFO L149 ceAbstractionStarter]: Applying trace abstraction to program that has 4 error locations. [2024-10-11 21:12:24,491 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-10-11 21:12:24,496 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;@5f7a4a3c, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-10-11 21:12:24,496 INFO L334 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2024-10-11 21:12:24,500 INFO L276 IsEmpty]: Start isEmpty. Operand has 29 states, 19 states have (on average 1.5263157894736843) internal successors, (29), 23 states have internal predecessors, (29), 3 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-10-11 21:12:24,504 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2024-10-11 21:12:24,504 INFO L207 NwaCegarLoop]: Found error trace [2024-10-11 21:12:24,505 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2024-10-11 21:12:24,508 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting isOddErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [isEvenErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, isEvenErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, isOddErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2024-10-11 21:12:24,511 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 21:12:24,512 INFO L85 PathProgramCache]: Analyzing trace with hash 329054099, now seen corresponding path program 1 times [2024-10-11 21:12:24,518 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 21:12:24,518 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1831860236] [2024-10-11 21:12:24,519 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 21:12:24,519 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 21:12:24,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 21:12:24,683 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 21:12:24,683 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 21:12:24,684 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1831860236] [2024-10-11 21:12:24,685 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1831860236] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 21:12:24,688 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 21:12:24,688 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-10-11 21:12:24,689 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [694891077] [2024-10-11 21:12:24,689 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 21:12:24,692 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-11 21:12:24,692 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 21:12:24,707 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-11 21:12:24,708 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-10-11 21:12:24,709 INFO L87 Difference]: Start difference. First operand has 29 states, 19 states have (on average 1.5263157894736843) internal successors, (29), 23 states have internal predecessors, (29), 3 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) 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 21:12:24,791 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-11 21:12:24,791 INFO L93 Difference]: Finished difference Result 44 states and 51 transitions. [2024-10-11 21:12:24,793 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-11 21:12:24,794 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 21:12:24,794 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-11 21:12:24,799 INFO L225 Difference]: With dead ends: 44 [2024-10-11 21:12:24,799 INFO L226 Difference]: Without dead ends: 26 [2024-10-11 21:12:24,801 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-10-11 21:12:24,803 INFO L432 NwaCegarLoop]: 23 mSDtfsCounter, 14 mSDsluCounter, 69 mSDsCounter, 0 mSdLazyCounter, 46 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15 SdHoareTripleChecker+Valid, 92 SdHoareTripleChecker+Invalid, 48 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 46 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-10-11 21:12:24,804 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [15 Valid, 92 Invalid, 48 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 46 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-11 21:12:24,814 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states. [2024-10-11 21:12:24,822 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 23. [2024-10-11 21:12:24,823 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23 states, 16 states have (on average 1.25) internal successors, (20), 19 states have internal predecessors, (20), 3 states have call successors, (3), 3 states have call predecessors, (3), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 21:12:24,824 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 23 transitions. [2024-10-11 21:12:24,825 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 23 transitions. Word has length 7 [2024-10-11 21:12:24,825 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-11 21:12:24,825 INFO L471 AbstractCegarLoop]: Abstraction has 23 states and 23 transitions. [2024-10-11 21:12:24,825 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 21:12:24,825 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 23 transitions. [2024-10-11 21:12:24,825 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2024-10-11 21:12:24,825 INFO L207 NwaCegarLoop]: Found error trace [2024-10-11 21:12:24,826 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 21:12:24,826 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-10-11 21:12:24,826 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting isOddErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [isEvenErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, isEvenErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, isOddErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2024-10-11 21:12:24,826 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 21:12:24,826 INFO L85 PathProgramCache]: Analyzing trace with hash 1610742535, now seen corresponding path program 1 times [2024-10-11 21:12:24,827 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 21:12:24,827 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [607310179] [2024-10-11 21:12:24,827 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 21:12:24,827 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 21:12:24,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 21:12:24,939 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 21:12:24,939 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 21:12:24,939 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [607310179] [2024-10-11 21:12:24,940 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [607310179] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 21:12:24,940 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 21:12:24,940 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-11 21:12:24,940 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1756522228] [2024-10-11 21:12:24,940 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 21:12:24,941 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-11 21:12:24,941 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 21:12:24,943 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-11 21:12:24,943 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-10-11 21:12:24,943 INFO L87 Difference]: Start difference. First operand 23 states and 23 transitions. Second operand has 5 states, 4 states have (on average 1.75) internal successors, (7), 3 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 21:12:24,975 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-11 21:12:24,976 INFO L93 Difference]: Finished difference Result 26 states and 26 transitions. [2024-10-11 21:12:24,976 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-11 21:12:24,976 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 1.75) internal successors, (7), 3 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 21:12:24,976 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-11 21:12:24,977 INFO L225 Difference]: With dead ends: 26 [2024-10-11 21:12:24,977 INFO L226 Difference]: Without dead ends: 25 [2024-10-11 21:12:24,977 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 0 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 21:12:24,978 INFO L432 NwaCegarLoop]: 12 mSDtfsCounter, 6 mSDsluCounter, 36 mSDsCounter, 0 mSdLazyCounter, 25 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 48 SdHoareTripleChecker+Invalid, 25 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 25 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-10-11 21:12:24,978 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 48 Invalid, 25 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 25 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-11 21:12:24,979 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25 states. [2024-10-11 21:12:24,982 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25 to 24. [2024-10-11 21:12:24,983 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24 states, 17 states have (on average 1.2352941176470589) internal successors, (21), 20 states have internal predecessors, (21), 3 states have call successors, (3), 3 states have call predecessors, (3), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 21:12:24,983 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 24 transitions. [2024-10-11 21:12:24,984 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 24 transitions. Word has length 8 [2024-10-11 21:12:24,984 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-11 21:12:24,984 INFO L471 AbstractCegarLoop]: Abstraction has 24 states and 24 transitions. [2024-10-11 21:12:24,984 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 1.75) internal successors, (7), 3 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 21:12:24,985 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 24 transitions. [2024-10-11 21:12:24,985 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2024-10-11 21:12:24,986 INFO L207 NwaCegarLoop]: Found error trace [2024-10-11 21:12:24,986 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 21:12:24,986 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-10-11 21:12:24,986 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting isEvenErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [isEvenErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, isEvenErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, isOddErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2024-10-11 21:12:24,987 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 21:12:24,987 INFO L85 PathProgramCache]: Analyzing trace with hash -641802699, now seen corresponding path program 1 times [2024-10-11 21:12:24,988 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 21:12:24,988 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [434362222] [2024-10-11 21:12:24,988 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 21:12:24,989 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 21:12:24,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 21:12:25,081 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 21:12:25,081 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 21:12:25,081 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [434362222] [2024-10-11 21:12:25,082 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [434362222] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 21:12:25,082 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 21:12:25,082 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-10-11 21:12:25,082 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [17593234] [2024-10-11 21:12:25,082 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 21:12:25,082 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-10-11 21:12:25,082 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 21:12:25,083 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-10-11 21:12:25,083 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-10-11 21:12:25,083 INFO L87 Difference]: Start difference. First operand 24 states and 24 transitions. Second operand has 7 states, 5 states have (on average 2.2) internal successors, (11), 5 states have internal predecessors, (11), 2 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 21:12:25,143 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-11 21:12:25,143 INFO L93 Difference]: Finished difference Result 33 states and 33 transitions. [2024-10-11 21:12:25,143 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-10-11 21:12:25,143 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 5 states have (on average 2.2) internal successors, (11), 5 states have internal predecessors, (11), 2 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 13 [2024-10-11 21:12:25,144 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-11 21:12:25,144 INFO L225 Difference]: With dead ends: 33 [2024-10-11 21:12:25,144 INFO L226 Difference]: Without dead ends: 32 [2024-10-11 21:12:25,145 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-10-11 21:12:25,149 INFO L432 NwaCegarLoop]: 7 mSDtfsCounter, 13 mSDsluCounter, 37 mSDsCounter, 0 mSdLazyCounter, 68 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 44 SdHoareTripleChecker+Invalid, 68 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 68 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-10-11 21:12:25,149 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [13 Valid, 44 Invalid, 68 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 68 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-11 21:12:25,150 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states. [2024-10-11 21:12:25,152 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 29. [2024-10-11 21:12:25,152 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 29 states, 21 states have (on average 1.1904761904761905) internal successors, (25), 24 states have internal predecessors, (25), 4 states have call successors, (4), 4 states have call predecessors, (4), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 21:12:25,153 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 29 transitions. [2024-10-11 21:12:25,153 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 29 transitions. Word has length 13 [2024-10-11 21:12:25,153 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-11 21:12:25,153 INFO L471 AbstractCegarLoop]: Abstraction has 29 states and 29 transitions. [2024-10-11 21:12:25,153 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 5 states have (on average 2.2) internal successors, (11), 5 states have internal predecessors, (11), 2 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 21:12:25,154 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 29 transitions. [2024-10-11 21:12:25,154 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2024-10-11 21:12:25,154 INFO L207 NwaCegarLoop]: Found error trace [2024-10-11 21:12:25,154 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 21:12:25,154 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-10-11 21:12:25,154 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting isEvenErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [isEvenErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, isEvenErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, isOddErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2024-10-11 21:12:25,155 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 21:12:25,155 INFO L85 PathProgramCache]: Analyzing trace with hash 1578952853, now seen corresponding path program 1 times [2024-10-11 21:12:25,155 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 21:12:25,155 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1738172188] [2024-10-11 21:12:25,155 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 21:12:25,155 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 21:12:25,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 21:12:25,231 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 21:12:25,232 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 21:12:25,232 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1738172188] [2024-10-11 21:12:25,232 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1738172188] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 21:12:25,232 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 21:12:25,232 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-10-11 21:12:25,232 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1421983479] [2024-10-11 21:12:25,232 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 21:12:25,233 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-10-11 21:12:25,233 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 21:12:25,233 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-10-11 21:12:25,234 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-10-11 21:12:25,234 INFO L87 Difference]: Start difference. First operand 29 states and 29 transitions. Second operand has 7 states, 6 states have (on average 2.0) internal successors, (12), 4 states have internal predecessors, (12), 2 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 21:12:25,278 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-11 21:12:25,278 INFO L93 Difference]: Finished difference Result 29 states and 29 transitions. [2024-10-11 21:12:25,279 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-10-11 21:12:25,279 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 2.0) internal successors, (12), 4 states have internal predecessors, (12), 2 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 21:12:25,279 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-11 21:12:25,279 INFO L225 Difference]: With dead ends: 29 [2024-10-11 21:12:25,279 INFO L226 Difference]: Without dead ends: 27 [2024-10-11 21:12:25,280 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-10-11 21:12:25,284 INFO L432 NwaCegarLoop]: 3 mSDtfsCounter, 13 mSDsluCounter, 12 mSDsCounter, 0 mSdLazyCounter, 60 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 15 SdHoareTripleChecker+Invalid, 62 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 60 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-10-11 21:12:25,285 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [13 Valid, 15 Invalid, 62 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 60 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-11 21:12:25,285 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2024-10-11 21:12:25,289 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 27. [2024-10-11 21:12:25,289 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27 states, 21 states have (on average 1.0952380952380953) internal successors, (23), 22 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 21:12:25,289 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 27 transitions. [2024-10-11 21:12:25,289 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 27 transitions. Word has length 14 [2024-10-11 21:12:25,290 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-11 21:12:25,290 INFO L471 AbstractCegarLoop]: Abstraction has 27 states and 27 transitions. [2024-10-11 21:12:25,290 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 2.0) internal successors, (12), 4 states have internal predecessors, (12), 2 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 21:12:25,290 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 27 transitions. [2024-10-11 21:12:25,290 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2024-10-11 21:12:25,290 INFO L207 NwaCegarLoop]: Found error trace [2024-10-11 21:12:25,290 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 21:12:25,291 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-10-11 21:12:25,291 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting isOddErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [isEvenErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, isEvenErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, isOddErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2024-10-11 21:12:25,293 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 21:12:25,293 INFO L85 PathProgramCache]: Analyzing trace with hash -89420187, now seen corresponding path program 1 times [2024-10-11 21:12:25,293 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 21:12:25,293 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1125294995] [2024-10-11 21:12:25,293 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 21:12:25,293 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 21:12:25,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 21:12:25,397 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 21:12:25,399 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 21:12:25,399 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1125294995] [2024-10-11 21:12:25,399 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1125294995] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-11 21:12:25,399 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1407633573] [2024-10-11 21:12:25,399 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 21:12:25,400 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 21:12:25,400 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-11 21:12:25,401 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 21:12:25,402 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 21:12:25,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 21:12:25,436 INFO L255 TraceCheckSpWp]: Trace formula consists of 53 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-10-11 21:12:25,439 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 21:12:25,504 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 21:12:25,505 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-11 21:12:25,607 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 21:12:25,607 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1407633573] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-11 21:12:25,608 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-11 21:12:25,608 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 15 [2024-10-11 21:12:25,608 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1679247685] [2024-10-11 21:12:25,608 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-11 21:12:25,608 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2024-10-11 21:12:25,609 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 21:12:25,609 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2024-10-11 21:12:25,609 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=196, Unknown=0, NotChecked=0, Total=240 [2024-10-11 21:12:25,609 INFO L87 Difference]: Start difference. First operand 27 states and 27 transitions. Second operand has 16 states, 13 states have (on average 2.3846153846153846) internal successors, (31), 10 states have internal predecessors, (31), 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 21:12:25,740 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-11 21:12:25,741 INFO L93 Difference]: Finished difference Result 49 states and 50 transitions. [2024-10-11 21:12:25,741 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-10-11 21:12:25,741 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 13 states have (on average 2.3846153846153846) internal successors, (31), 10 states have internal predecessors, (31), 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 19 [2024-10-11 21:12:25,742 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-11 21:12:25,743 INFO L225 Difference]: With dead ends: 49 [2024-10-11 21:12:25,743 INFO L226 Difference]: Without dead ends: 47 [2024-10-11 21:12:25,744 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 47 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=80, Invalid=340, Unknown=0, NotChecked=0, Total=420 [2024-10-11 21:12:25,745 INFO L432 NwaCegarLoop]: 6 mSDtfsCounter, 40 mSDsluCounter, 50 mSDsCounter, 0 mSdLazyCounter, 129 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 40 SdHoareTripleChecker+Valid, 56 SdHoareTripleChecker+Invalid, 131 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 129 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-11 21:12:25,746 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [40 Valid, 56 Invalid, 131 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 129 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-11 21:12:25,747 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47 states. [2024-10-11 21:12:25,751 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47 to 45. [2024-10-11 21:12:25,751 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 45 states, 36 states have (on average 1.0555555555555556) internal successors, (38), 37 states have internal predecessors, (38), 7 states have call successors, (7), 7 states have call predecessors, (7), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 21:12:25,752 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 45 transitions. [2024-10-11 21:12:25,752 INFO L78 Accepts]: Start accepts. Automaton has 45 states and 45 transitions. Word has length 19 [2024-10-11 21:12:25,752 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-11 21:12:25,752 INFO L471 AbstractCegarLoop]: Abstraction has 45 states and 45 transitions. [2024-10-11 21:12:25,753 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 13 states have (on average 2.3846153846153846) internal successors, (31), 10 states have internal predecessors, (31), 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 21:12:25,753 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 45 transitions. [2024-10-11 21:12:25,754 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2024-10-11 21:12:25,754 INFO L207 NwaCegarLoop]: Found error trace [2024-10-11 21:12:25,755 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1] [2024-10-11 21:12:25,770 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2024-10-11 21:12:25,955 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,2 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 21:12:25,956 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting isEvenErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [isEvenErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, isEvenErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, isOddErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2024-10-11 21:12:25,956 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 21:12:25,957 INFO L85 PathProgramCache]: Analyzing trace with hash 343594457, now seen corresponding path program 1 times [2024-10-11 21:12:25,957 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 21:12:25,957 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [258327885] [2024-10-11 21:12:25,957 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 21:12:25,960 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 21:12:25,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 21:12:26,170 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 32 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 21:12:26,182 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 21:12:26,182 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [258327885] [2024-10-11 21:12:26,182 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [258327885] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-11 21:12:26,182 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [618787863] [2024-10-11 21:12:26,183 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 21:12:26,183 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 21:12:26,183 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-11 21:12:26,184 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 21:12:26,186 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 21:12:26,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 21:12:26,215 INFO L255 TraceCheckSpWp]: Trace formula consists of 83 conjuncts, 14 conjuncts are in the unsatisfiable core [2024-10-11 21:12:26,216 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 21:12:26,281 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 32 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 21:12:26,282 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-11 21:12:26,503 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 32 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 21:12:26,503 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [618787863] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-11 21:12:26,503 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-11 21:12:26,503 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14, 14] total 27 [2024-10-11 21:12:26,503 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1183905864] [2024-10-11 21:12:26,504 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-11 21:12:26,504 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2024-10-11 21:12:26,505 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 21:12:26,506 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2024-10-11 21:12:26,507 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=114, Invalid=642, Unknown=0, NotChecked=0, Total=756 [2024-10-11 21:12:26,507 INFO L87 Difference]: Start difference. First operand 45 states and 45 transitions. Second operand has 28 states, 25 states have (on average 2.44) internal successors, (61), 16 states have internal predecessors, (61), 12 states have call successors, (12), 12 states have call predecessors, (12), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 21:12:26,777 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-11 21:12:26,778 INFO L93 Difference]: Finished difference Result 91 states and 96 transitions. [2024-10-11 21:12:26,778 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2024-10-11 21:12:26,778 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 25 states have (on average 2.44) internal successors, (61), 16 states have internal predecessors, (61), 12 states have call successors, (12), 12 states have call predecessors, (12), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 37 [2024-10-11 21:12:26,779 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-11 21:12:26,780 INFO L225 Difference]: With dead ends: 91 [2024-10-11 21:12:26,780 INFO L226 Difference]: Without dead ends: 89 [2024-10-11 21:12:26,780 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 98 GetRequests, 60 SyntacticMatches, 0 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 320 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=252, Invalid=1308, Unknown=0, NotChecked=0, Total=1560 [2024-10-11 21:12:26,782 INFO L432 NwaCegarLoop]: 6 mSDtfsCounter, 100 mSDsluCounter, 65 mSDsCounter, 0 mSdLazyCounter, 220 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 100 SdHoareTripleChecker+Valid, 71 SdHoareTripleChecker+Invalid, 225 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 220 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-11 21:12:26,783 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [100 Valid, 71 Invalid, 225 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 220 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-11 21:12:26,784 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 89 states. [2024-10-11 21:12:26,791 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 89 to 87. [2024-10-11 21:12:26,791 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 87 states, 71 states have (on average 1.028169014084507) internal successors, (73), 72 states have internal predecessors, (73), 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 21:12:26,794 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 87 states to 87 states and 87 transitions. [2024-10-11 21:12:26,794 INFO L78 Accepts]: Start accepts. Automaton has 87 states and 87 transitions. Word has length 37 [2024-10-11 21:12:26,795 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-11 21:12:26,795 INFO L471 AbstractCegarLoop]: Abstraction has 87 states and 87 transitions. [2024-10-11 21:12:26,795 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 25 states have (on average 2.44) internal successors, (61), 16 states have internal predecessors, (61), 12 states have call successors, (12), 12 states have call predecessors, (12), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 21:12:26,795 INFO L276 IsEmpty]: Start isEmpty. Operand 87 states and 87 transitions. [2024-10-11 21:12:26,796 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2024-10-11 21:12:26,797 INFO L207 NwaCegarLoop]: Found error trace [2024-10-11 21:12:26,797 INFO L215 NwaCegarLoop]: trace histogram [7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 1, 1, 1, 1] [2024-10-11 21:12:26,809 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 21:12:26,998 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,3 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 21:12:26,999 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting isOddErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [isEvenErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, isEvenErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, isOddErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2024-10-11 21:12:26,999 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 21:12:26,999 INFO L85 PathProgramCache]: Analyzing trace with hash 305757055, now seen corresponding path program 2 times [2024-10-11 21:12:26,999 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 21:12:26,999 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [269850854] [2024-10-11 21:12:27,000 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 21:12:27,000 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 21:12:27,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 21:12:27,481 INFO L134 CoverageAnalysis]: Checked inductivity of 204 backedges. 0 proven. 204 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 21:12:27,481 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 21:12:27,482 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [269850854] [2024-10-11 21:12:27,482 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [269850854] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-11 21:12:27,482 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [527685370] [2024-10-11 21:12:27,482 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-10-11 21:12:27,482 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 21:12:27,482 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-11 21:12:27,484 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 21:12:27,485 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 21:12:27,528 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-10-11 21:12:27,529 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-11 21:12:27,530 INFO L255 TraceCheckSpWp]: Trace formula consists of 153 conjuncts, 28 conjuncts are in the unsatisfiable core [2024-10-11 21:12:27,532 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 21:12:27,620 INFO L134 CoverageAnalysis]: Checked inductivity of 204 backedges. 0 proven. 204 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 21:12:27,621 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-11 21:12:28,211 INFO L134 CoverageAnalysis]: Checked inductivity of 204 backedges. 0 proven. 204 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 21:12:28,211 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [527685370] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-11 21:12:28,212 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-11 21:12:28,212 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [28, 28, 28] total 55 [2024-10-11 21:12:28,212 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1650303425] [2024-10-11 21:12:28,212 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-11 21:12:28,213 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 56 states [2024-10-11 21:12:28,213 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 21:12:28,214 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 56 interpolants. [2024-10-11 21:12:28,215 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=424, Invalid=2656, Unknown=0, NotChecked=0, Total=3080 [2024-10-11 21:12:28,215 INFO L87 Difference]: Start difference. First operand 87 states and 87 transitions. Second operand has 56 states, 53 states have (on average 2.4716981132075473) internal successors, (131), 30 states have internal predecessors, (131), 26 states have call successors, (26), 26 states have call predecessors, (26), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 21:12:28,851 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-11 21:12:28,852 INFO L93 Difference]: Finished difference Result 169 states and 180 transitions. [2024-10-11 21:12:28,852 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 54 states. [2024-10-11 21:12:28,853 INFO L78 Accepts]: Start accepts. Automaton has has 56 states, 53 states have (on average 2.4716981132075473) internal successors, (131), 30 states have internal predecessors, (131), 26 states have call successors, (26), 26 states have call predecessors, (26), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 79 [2024-10-11 21:12:28,854 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-11 21:12:28,855 INFO L225 Difference]: With dead ends: 169 [2024-10-11 21:12:28,856 INFO L226 Difference]: Without dead ends: 167 [2024-10-11 21:12:28,858 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 209 GetRequests, 130 SyntacticMatches, 0 SemanticMatches, 79 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1737 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=970, Invalid=5510, Unknown=0, NotChecked=0, Total=6480 [2024-10-11 21:12:28,859 INFO L432 NwaCegarLoop]: 6 mSDtfsCounter, 320 mSDsluCounter, 74 mSDsCounter, 0 mSdLazyCounter, 377 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 320 SdHoareTripleChecker+Valid, 80 SdHoareTripleChecker+Invalid, 384 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 377 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-10-11 21:12:28,859 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [320 Valid, 80 Invalid, 384 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 377 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-10-11 21:12:28,860 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 167 states. [2024-10-11 21:12:28,878 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 167 to 165. [2024-10-11 21:12:28,879 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 165 states, 136 states have (on average 1.0147058823529411) internal successors, (138), 137 states have internal predecessors, (138), 27 states have call successors, (27), 27 states have call predecessors, (27), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 21:12:28,880 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 165 states to 165 states and 165 transitions. [2024-10-11 21:12:28,883 INFO L78 Accepts]: Start accepts. Automaton has 165 states and 165 transitions. Word has length 79 [2024-10-11 21:12:28,883 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-11 21:12:28,883 INFO L471 AbstractCegarLoop]: Abstraction has 165 states and 165 transitions. [2024-10-11 21:12:28,883 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 56 states, 53 states have (on average 2.4716981132075473) internal successors, (131), 30 states have internal predecessors, (131), 26 states have call successors, (26), 26 states have call predecessors, (26), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 21:12:28,883 INFO L276 IsEmpty]: Start isEmpty. Operand 165 states and 165 transitions. [2024-10-11 21:12:28,887 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 158 [2024-10-11 21:12:28,887 INFO L207 NwaCegarLoop]: Found error trace [2024-10-11 21:12:28,887 INFO L215 NwaCegarLoop]: trace histogram [13, 13, 13, 13, 13, 13, 13, 13, 13, 12, 12, 12, 1, 1, 1, 1] [2024-10-11 21:12:28,900 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-10-11 21:12:29,088 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,4 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 21:12:29,089 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting isEvenErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [isEvenErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, isEvenErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, isOddErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2024-10-11 21:12:29,089 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 21:12:29,089 INFO L85 PathProgramCache]: Analyzing trace with hash -352348147, now seen corresponding path program 2 times [2024-10-11 21:12:29,089 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 21:12:29,089 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [218149804] [2024-10-11 21:12:29,089 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 21:12:29,089 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 21:12:29,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 21:12:30,294 INFO L134 CoverageAnalysis]: Checked inductivity of 912 backedges. 0 proven. 912 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 21:12:30,295 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 21:12:30,295 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [218149804] [2024-10-11 21:12:30,295 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [218149804] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-11 21:12:30,295 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1112850688] [2024-10-11 21:12:30,295 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-10-11 21:12:30,295 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 21:12:30,295 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-11 21:12:30,296 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 21:12:30,297 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 21:12:30,346 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-10-11 21:12:30,346 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-11 21:12:30,347 INFO L255 TraceCheckSpWp]: Trace formula consists of 283 conjuncts, 54 conjuncts are in the unsatisfiable core [2024-10-11 21:12:30,350 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 21:12:30,533 INFO L134 CoverageAnalysis]: Checked inductivity of 912 backedges. 0 proven. 912 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 21:12:30,533 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-11 21:12:32,046 INFO L134 CoverageAnalysis]: Checked inductivity of 912 backedges. 0 proven. 912 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 21:12:32,047 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1112850688] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-11 21:12:32,047 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-11 21:12:32,047 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [54, 54, 54] total 107 [2024-10-11 21:12:32,047 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [750960816] [2024-10-11 21:12:32,047 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-11 21:12:32,048 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 108 states [2024-10-11 21:12:32,048 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 21:12:32,049 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 108 interpolants. [2024-10-11 21:12:32,054 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1514, Invalid=10042, Unknown=0, NotChecked=0, Total=11556 [2024-10-11 21:12:32,055 INFO L87 Difference]: Start difference. First operand 165 states and 165 transitions. Second operand has 108 states, 105 states have (on average 2.4857142857142858) internal successors, (261), 56 states have internal predecessors, (261), 52 states have call successors, (52), 52 states have call predecessors, (52), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 21:12:33,606 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-11 21:12:33,606 INFO L93 Difference]: Finished difference Result 331 states and 356 transitions. [2024-10-11 21:12:33,607 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 108 states. [2024-10-11 21:12:33,607 INFO L78 Accepts]: Start accepts. Automaton has has 108 states, 105 states have (on average 2.4857142857142858) internal successors, (261), 56 states have internal predecessors, (261), 52 states have call successors, (52), 52 states have call predecessors, (52), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 157 [2024-10-11 21:12:33,608 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-11 21:12:33,609 INFO L225 Difference]: With dead ends: 331 [2024-10-11 21:12:33,609 INFO L226 Difference]: Without dead ends: 329 [2024-10-11 21:12:33,613 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 418 GetRequests, 260 SyntacticMatches, 0 SemanticMatches, 158 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7600 ImplicationChecksByTransitivity, 3.1s TimeCoverageRelationStatistics Valid=3672, Invalid=21768, Unknown=0, NotChecked=0, Total=25440 [2024-10-11 21:12:33,614 INFO L432 NwaCegarLoop]: 6 mSDtfsCounter, 760 mSDsluCounter, 89 mSDsCounter, 0 mSdLazyCounter, 690 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 760 SdHoareTripleChecker+Valid, 95 SdHoareTripleChecker+Invalid, 705 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 690 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-10-11 21:12:33,614 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [760 Valid, 95 Invalid, 705 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 690 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-10-11 21:12:33,614 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 329 states. [2024-10-11 21:12:33,629 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 329 to 327. [2024-10-11 21:12:33,630 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 327 states, 271 states have (on average 1.007380073800738) internal successors, (273), 272 states have internal predecessors, (273), 54 states have call successors, (54), 54 states have call predecessors, (54), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 21:12:33,631 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 327 states to 327 states and 327 transitions. [2024-10-11 21:12:33,631 INFO L78 Accepts]: Start accepts. Automaton has 327 states and 327 transitions. Word has length 157 [2024-10-11 21:12:33,631 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-11 21:12:33,632 INFO L471 AbstractCegarLoop]: Abstraction has 327 states and 327 transitions. [2024-10-11 21:12:33,632 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 108 states, 105 states have (on average 2.4857142857142858) internal successors, (261), 56 states have internal predecessors, (261), 52 states have call successors, (52), 52 states have call predecessors, (52), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 21:12:33,632 INFO L276 IsEmpty]: Start isEmpty. Operand 327 states and 327 transitions. [2024-10-11 21:12:33,635 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 320 [2024-10-11 21:12:33,635 INFO L207 NwaCegarLoop]: Found error trace [2024-10-11 21:12:33,635 INFO L215 NwaCegarLoop]: trace histogram [27, 27, 27, 26, 26, 26, 26, 26, 26, 26, 26, 26, 1, 1, 1, 1] [2024-10-11 21:12:33,647 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-10-11 21:12:33,839 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,SelfDestructingSolverStorable7 [2024-10-11 21:12:33,840 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting isOddErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [isEvenErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, isEvenErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, isOddErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2024-10-11 21:12:33,840 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 21:12:33,840 INFO L85 PathProgramCache]: Analyzing trace with hash 541733351, now seen corresponding path program 3 times [2024-10-11 21:12:33,840 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 21:12:33,840 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [177251141] [2024-10-11 21:12:33,840 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 21:12:33,840 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 21:12:33,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 21:12:37,503 INFO L134 CoverageAnalysis]: Checked inductivity of 4004 backedges. 0 proven. 4004 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 21:12:37,503 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 21:12:37,503 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [177251141] [2024-10-11 21:12:37,503 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [177251141] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-11 21:12:37,503 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1822295392] [2024-10-11 21:12:37,503 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-10-11 21:12:37,503 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 21:12:37,503 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-11 21:12:37,504 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 21:12:37,505 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 21:12:37,595 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 27 check-sat command(s) [2024-10-11 21:12:37,595 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-11 21:12:37,598 INFO L255 TraceCheckSpWp]: Trace formula consists of 553 conjuncts, 108 conjuncts are in the unsatisfiable core [2024-10-11 21:12:37,606 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 21:12:37,906 INFO L134 CoverageAnalysis]: Checked inductivity of 4004 backedges. 0 proven. 4004 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 21:12:37,906 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-11 21:12:42,931 INFO L134 CoverageAnalysis]: Checked inductivity of 4004 backedges. 0 proven. 4004 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 21:12:42,931 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1822295392] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-11 21:12:42,931 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-11 21:12:42,932 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [108, 108, 108] total 215 [2024-10-11 21:12:42,932 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1668471728] [2024-10-11 21:12:42,932 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-11 21:12:42,949 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 216 states [2024-10-11 21:12:42,949 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 21:12:42,951 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 216 interpolants. [2024-10-11 21:12:42,955 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5944, Invalid=40496, Unknown=0, NotChecked=0, Total=46440 [2024-10-11 21:12:42,955 INFO L87 Difference]: Start difference. First operand 327 states and 327 transitions. Second operand has 216 states, 213 states have (on average 2.492957746478873) internal successors, (531), 110 states have internal predecessors, (531), 106 states have call successors, (106), 106 states have call predecessors, (106), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 21:12:47,997 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-11 21:12:47,998 INFO L93 Difference]: Finished difference Result 649 states and 700 transitions. [2024-10-11 21:12:47,998 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 214 states. [2024-10-11 21:12:47,998 INFO L78 Accepts]: Start accepts. Automaton has has 216 states, 213 states have (on average 2.492957746478873) internal successors, (531), 110 states have internal predecessors, (531), 106 states have call successors, (106), 106 states have call predecessors, (106), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 319 [2024-10-11 21:12:47,999 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-11 21:12:48,001 INFO L225 Difference]: With dead ends: 649 [2024-10-11 21:12:48,001 INFO L226 Difference]: Without dead ends: 647 [2024-10-11 21:12:48,006 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 849 GetRequests, 530 SyntacticMatches, 0 SemanticMatches, 319 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32497 ImplicationChecksByTransitivity, 10.7s TimeCoverageRelationStatistics Valid=14530, Invalid=88190, Unknown=0, NotChecked=0, Total=102720 [2024-10-11 21:12:48,006 INFO L432 NwaCegarLoop]: 6 mSDtfsCounter, 1615 mSDsluCounter, 110 mSDsCounter, 0 mSdLazyCounter, 1315 mSolverCounterSat, 27 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1615 SdHoareTripleChecker+Valid, 116 SdHoareTripleChecker+Invalid, 1342 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 27 IncrementalHoareTripleChecker+Valid, 1315 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-10-11 21:12:48,006 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1615 Valid, 116 Invalid, 1342 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [27 Valid, 1315 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-10-11 21:12:48,007 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 647 states. [2024-10-11 21:12:48,027 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 647 to 645. [2024-10-11 21:12:48,028 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 645 states, 536 states have (on average 1.0037313432835822) internal successors, (538), 537 states have internal predecessors, (538), 107 states have call successors, (107), 107 states have call predecessors, (107), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 21:12:48,029 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 645 states to 645 states and 645 transitions. [2024-10-11 21:12:48,030 INFO L78 Accepts]: Start accepts. Automaton has 645 states and 645 transitions. Word has length 319 [2024-10-11 21:12:48,030 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-11 21:12:48,030 INFO L471 AbstractCegarLoop]: Abstraction has 645 states and 645 transitions. [2024-10-11 21:12:48,031 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 216 states, 213 states have (on average 2.492957746478873) internal successors, (531), 110 states have internal predecessors, (531), 106 states have call successors, (106), 106 states have call predecessors, (106), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 21:12:48,031 INFO L276 IsEmpty]: Start isEmpty. Operand 645 states and 645 transitions. [2024-10-11 21:12:48,039 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 638 [2024-10-11 21:12:48,039 INFO L207 NwaCegarLoop]: Found error trace [2024-10-11 21:12:48,039 INFO L215 NwaCegarLoop]: trace histogram [53, 53, 53, 53, 53, 53, 53, 53, 53, 52, 52, 52, 1, 1, 1, 1] [2024-10-11 21:12:48,053 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2024-10-11 21:12:48,240 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,6 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 21:12:48,240 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting isEvenErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [isEvenErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, isEvenErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, isOddErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2024-10-11 21:12:48,241 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 21:12:48,241 INFO L85 PathProgramCache]: Analyzing trace with hash 2014095581, now seen corresponding path program 3 times [2024-10-11 21:12:48,241 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 21:12:48,241 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [83541826] [2024-10-11 21:12:48,241 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 21:12:48,241 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 21:12:48,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 21:13:03,738 INFO L134 CoverageAnalysis]: Checked inductivity of 16432 backedges. 0 proven. 16432 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 21:13:03,739 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 21:13:03,739 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [83541826] [2024-10-11 21:13:03,739 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [83541826] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-11 21:13:03,739 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [250897229] [2024-10-11 21:13:03,739 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-10-11 21:13:03,739 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 21:13:03,739 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-11 21:13:03,740 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 21:13:03,741 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 21:13:03,969 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 53 check-sat command(s) [2024-10-11 21:13:03,969 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-11 21:13:03,975 INFO L255 TraceCheckSpWp]: Trace formula consists of 1083 conjuncts, 214 conjuncts are in the unsatisfiable core [2024-10-11 21:13:03,985 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 21:13:04,537 INFO L134 CoverageAnalysis]: Checked inductivity of 16432 backedges. 0 proven. 16432 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 21:13:04,537 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-11 21:13:23,277 INFO L134 CoverageAnalysis]: Checked inductivity of 16432 backedges. 0 proven. 16432 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 21:13:23,277 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [250897229] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-11 21:13:23,277 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-11 21:13:23,277 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [214, 214, 214] total 427 [2024-10-11 21:13:23,277 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1653455069] [2024-10-11 21:13:23,277 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-11 21:13:23,279 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 428 states [2024-10-11 21:13:23,279 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 21:13:23,283 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 428 interpolants. [2024-10-11 21:13:23,289 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23114, Invalid=159642, Unknown=0, NotChecked=0, Total=182756 [2024-10-11 21:13:23,290 INFO L87 Difference]: Start difference. First operand 645 states and 645 transitions. Second operand has 428 states, 425 states have (on average 2.496470588235294) internal successors, (1061), 216 states have internal predecessors, (1061), 212 states have call successors, (212), 212 states have call predecessors, (212), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 21:13:43,949 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-11 21:13:43,949 INFO L93 Difference]: Finished difference Result 1291 states and 1396 transitions. [2024-10-11 21:13:43,949 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 428 states. [2024-10-11 21:13:43,950 INFO L78 Accepts]: Start accepts. Automaton has has 428 states, 425 states have (on average 2.496470588235294) internal successors, (1061), 216 states have internal predecessors, (1061), 212 states have call successors, (212), 212 states have call predecessors, (212), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 637 [2024-10-11 21:13:43,951 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-11 21:13:43,954 INFO L225 Difference]: With dead ends: 1291 [2024-10-11 21:13:43,955 INFO L226 Difference]: Without dead ends: 1289 [2024-10-11 21:13:43,968 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 1698 GetRequests, 1060 SyntacticMatches, 0 SemanticMatches, 638 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 132720 ImplicationChecksByTransitivity, 41.1s TimeCoverageRelationStatistics Valid=57352, Invalid=351608, Unknown=0, NotChecked=0, Total=408960 [2024-10-11 21:13:43,968 INFO L432 NwaCegarLoop]: 6 mSDtfsCounter, 4630 mSDsluCounter, 116 mSDsCounter, 0 mSdLazyCounter, 2493 mSolverCounterSat, 55 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4630 SdHoareTripleChecker+Valid, 122 SdHoareTripleChecker+Invalid, 2548 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 55 IncrementalHoareTripleChecker+Valid, 2493 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2024-10-11 21:13:43,968 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [4630 Valid, 122 Invalid, 2548 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [55 Valid, 2493 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2024-10-11 21:13:43,969 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1289 states. [2024-10-11 21:13:44,003 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1289 to 1287. [2024-10-11 21:13:44,004 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1287 states, 1071 states have (on average 1.0018674136321195) internal successors, (1073), 1072 states have internal predecessors, (1073), 214 states have call successors, (214), 214 states have call predecessors, (214), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 21:13:44,007 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1287 states to 1287 states and 1287 transitions. [2024-10-11 21:13:44,007 INFO L78 Accepts]: Start accepts. Automaton has 1287 states and 1287 transitions. Word has length 637 [2024-10-11 21:13:44,008 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-11 21:13:44,008 INFO L471 AbstractCegarLoop]: Abstraction has 1287 states and 1287 transitions. [2024-10-11 21:13:44,009 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 428 states, 425 states have (on average 2.496470588235294) internal successors, (1061), 216 states have internal predecessors, (1061), 212 states have call successors, (212), 212 states have call predecessors, (212), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 21:13:44,009 INFO L276 IsEmpty]: Start isEmpty. Operand 1287 states and 1287 transitions. [2024-10-11 21:13:44,039 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1280 [2024-10-11 21:13:44,039 INFO L207 NwaCegarLoop]: Found error trace [2024-10-11 21:13:44,039 INFO L215 NwaCegarLoop]: trace histogram [107, 107, 107, 106, 106, 106, 106, 106, 106, 106, 106, 106, 1, 1, 1, 1] [2024-10-11 21:13:44,053 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 21:13:44,240 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,SelfDestructingSolverStorable9 [2024-10-11 21:13:44,240 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting isOddErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [isEvenErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, isEvenErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, isOddErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2024-10-11 21:13:44,241 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 21:13:44,241 INFO L85 PathProgramCache]: Analyzing trace with hash -1467143289, now seen corresponding path program 4 times [2024-10-11 21:13:44,241 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 21:13:44,241 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1949568206] [2024-10-11 21:13:44,241 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 21:13:44,241 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 21:13:44,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat