./Ultimate.py --spec ../sv-benchmarks/c/properties/no-overflow.prp --file ../sv-benchmarks/c/recursive/EvenOdd03.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 30f4e4ab Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx12G -Xms1G -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/recursive/EvenOdd03.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --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 f3d619d2c1c3b5319c1ba41a41e084c9947cb440 ........................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.1.24-30f4e4a [2019-11-28 02:53:23,264 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-28 02:53:23,267 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-28 02:53:23,286 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-11-28 02:53:23,287 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-11-28 02:53:23,289 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-11-28 02:53:23,292 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-11-28 02:53:23,302 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-11-28 02:53:23,308 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-11-28 02:53:23,312 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-11-28 02:53:23,315 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-11-28 02:53:23,317 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-11-28 02:53:23,317 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-28 02:53:23,319 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-28 02:53:23,320 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-28 02:53:23,321 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-28 02:53:23,323 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-28 02:53:23,324 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-28 02:53:23,326 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-28 02:53:23,329 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-28 02:53:23,334 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-28 02:53:23,337 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-28 02:53:23,340 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-28 02:53:23,342 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-28 02:53:23,345 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-11-28 02:53:23,345 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-11-28 02:53:23,345 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-11-28 02:53:23,347 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-11-28 02:53:23,348 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-11-28 02:53:23,350 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-11-28 02:53:23,350 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-11-28 02:53:23,351 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-11-28 02:53:23,352 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-11-28 02:53:23,353 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-11-28 02:53:23,355 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-11-28 02:53:23,355 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-11-28 02:53:23,356 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-11-28 02:53:23,357 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-11-28 02:53:23,357 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-28 02:53:23,358 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-28 02:53:23,360 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-28 02:53:23,361 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf [2019-11-28 02:53:23,384 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-28 02:53:23,384 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-28 02:53:23,390 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-11-28 02:53:23,391 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-11-28 02:53:23,392 INFO L138 SettingsManager]: * Use SBE=true [2019-11-28 02:53:23,392 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-28 02:53:23,392 INFO L138 SettingsManager]: * sizeof long=4 [2019-11-28 02:53:23,393 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2019-11-28 02:53:23,393 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-11-28 02:53:23,393 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-11-28 02:53:23,394 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-28 02:53:23,395 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-11-28 02:53:23,395 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-11-28 02:53:23,395 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-11-28 02:53:23,395 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2019-11-28 02:53:23,395 INFO L138 SettingsManager]: * sizeof long double=12 [2019-11-28 02:53:23,395 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-11-28 02:53:23,396 INFO L138 SettingsManager]: * Use constant arrays=true [2019-11-28 02:53:23,396 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-11-28 02:53:23,396 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-28 02:53:23,396 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-11-28 02:53:23,396 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-11-28 02:53:23,397 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-11-28 02:53:23,397 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-28 02:53:23,397 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-28 02:53:23,397 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-11-28 02:53:23,398 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-11-28 02:53:23,398 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-11-28 02:53:23,398 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-11-28 02:53:23,399 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-11-28 02:53:23,399 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml 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 -> f3d619d2c1c3b5319c1ba41a41e084c9947cb440 [2019-11-28 02:53:23,736 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-28 02:53:23,759 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-28 02:53:23,763 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-28 02:53:23,765 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-28 02:53:23,766 INFO L275 PluginConnector]: CDTParser initialized [2019-11-28 02:53:23,767 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/recursive/EvenOdd03.c [2019-11-28 02:53:23,841 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b26a33037/62c91bc8bf6647089b4bcec365df1268/FLAG2adc7dc83 [2019-11-28 02:53:24,265 INFO L306 CDTParser]: Found 1 translation units. [2019-11-28 02:53:24,266 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/recursive/EvenOdd03.c [2019-11-28 02:53:24,272 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b26a33037/62c91bc8bf6647089b4bcec365df1268/FLAG2adc7dc83 [2019-11-28 02:53:24,643 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b26a33037/62c91bc8bf6647089b4bcec365df1268 [2019-11-28 02:53:24,646 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-28 02:53:24,647 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2019-11-28 02:53:24,649 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-28 02:53:24,649 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-28 02:53:24,652 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-28 02:53:24,654 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 02:53:24" (1/1) ... [2019-11-28 02:53:24,657 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1798a1d0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:53:24, skipping insertion in model container [2019-11-28 02:53:24,657 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 02:53:24" (1/1) ... [2019-11-28 02:53:24,666 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2019-11-28 02:53:24,690 INFO L178 MainTranslator]: Built tables and reachable declarations [2019-11-28 02:53:24,876 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-28 02:53:24,882 INFO L203 MainTranslator]: Completed pre-run [2019-11-28 02:53:24,903 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-28 02:53:24,916 INFO L208 MainTranslator]: Completed translation [2019-11-28 02:53:24,916 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:53:24 WrapperNode [2019-11-28 02:53:24,916 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-28 02:53:24,917 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-11-28 02:53:24,917 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-11-28 02:53:24,917 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-11-28 02:53:24,925 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:53:24" (1/1) ... [2019-11-28 02:53:24,929 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:53:24" (1/1) ... [2019-11-28 02:53:24,947 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-11-28 02:53:24,948 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-28 02:53:24,948 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-28 02:53:24,948 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-28 02:53:25,016 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:53:24" (1/1) ... [2019-11-28 02:53:25,016 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:53:24" (1/1) ... [2019-11-28 02:53:25,017 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:53:24" (1/1) ... [2019-11-28 02:53:25,018 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:53:24" (1/1) ... [2019-11-28 02:53:25,020 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:53:24" (1/1) ... [2019-11-28 02:53:25,023 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:53:24" (1/1) ... [2019-11-28 02:53:25,024 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:53:24" (1/1) ... [2019-11-28 02:53:25,026 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-28 02:53:25,027 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-28 02:53:25,027 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-28 02:53:25,027 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-28 02:53:25,028 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:53:24" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-28 02:53:25,077 INFO L130 BoogieDeclarations]: Found specification of procedure isEven [2019-11-28 02:53:25,078 INFO L138 BoogieDeclarations]: Found implementation of procedure isEven [2019-11-28 02:53:25,079 INFO L130 BoogieDeclarations]: Found specification of procedure isOdd [2019-11-28 02:53:25,079 INFO L138 BoogieDeclarations]: Found implementation of procedure isOdd [2019-11-28 02:53:25,079 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-28 02:53:25,079 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-28 02:53:25,309 INFO L292 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-28 02:53:25,309 INFO L297 CfgBuilder]: Removed 4 assume(true) statements. [2019-11-28 02:53:25,311 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 02:53:25 BoogieIcfgContainer [2019-11-28 02:53:25,325 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-28 02:53:25,330 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-11-28 02:53:25,330 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-11-28 02:53:25,336 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-11-28 02:53:25,338 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.11 02:53:24" (1/3) ... [2019-11-28 02:53:25,341 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5046b0fe and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 02:53:25, skipping insertion in model container [2019-11-28 02:53:25,341 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:53:24" (2/3) ... [2019-11-28 02:53:25,342 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5046b0fe and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 02:53:25, skipping insertion in model container [2019-11-28 02:53:25,343 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 02:53:25" (3/3) ... [2019-11-28 02:53:25,348 INFO L109 eAbstractionObserver]: Analyzing ICFG EvenOdd03.c [2019-11-28 02:53:25,371 INFO L156 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-11-28 02:53:25,379 INFO L168 ceAbstractionStarter]: Appying trace abstraction to program that has 4 error locations. [2019-11-28 02:53:25,393 INFO L249 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2019-11-28 02:53:25,421 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-11-28 02:53:25,422 INFO L374 AbstractCegarLoop]: Hoare is true [2019-11-28 02:53:25,422 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-11-28 02:53:25,422 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-28 02:53:25,423 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-28 02:53:25,423 INFO L378 AbstractCegarLoop]: Difference is false [2019-11-28 02:53:25,423 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-28 02:53:25,423 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-11-28 02:53:25,441 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states. [2019-11-28 02:53:25,445 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2019-11-28 02:53:25,446 INFO L402 BasicCegarLoop]: Found error trace [2019-11-28 02:53:25,447 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2019-11-28 02:53:25,447 INFO L410 AbstractCegarLoop]: === Iteration 1 === [isEvenErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, isEvenErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, isOddErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, isOddErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2019-11-28 02:53:25,454 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 02:53:25,454 INFO L82 PathProgramCache]: Analyzing trace with hash 2104366230, now seen corresponding path program 1 times [2019-11-28 02:53:25,464 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-28 02:53:25,465 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [688119356] [2019-11-28 02:53:25,465 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-28 02:53:25,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 02:53:25,644 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-28 02:53:25,645 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [688119356] [2019-11-28 02:53:25,646 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-28 02:53:25,646 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-11-28 02:53:25,648 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [17003791] [2019-11-28 02:53:25,652 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-11-28 02:53:25,653 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-28 02:53:25,663 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-11-28 02:53:25,664 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-11-28 02:53:25,666 INFO L87 Difference]: Start difference. First operand 31 states. Second operand 5 states. [2019-11-28 02:53:25,813 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-28 02:53:25,813 INFO L93 Difference]: Finished difference Result 47 states and 54 transitions. [2019-11-28 02:53:25,814 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-11-28 02:53:25,815 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 7 [2019-11-28 02:53:25,815 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-28 02:53:25,829 INFO L225 Difference]: With dead ends: 47 [2019-11-28 02:53:25,830 INFO L226 Difference]: Without dead ends: 26 [2019-11-28 02:53:25,837 INFO L630 BasicCegarLoop]: 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 [2019-11-28 02:53:25,853 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states. [2019-11-28 02:53:25,870 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 23. [2019-11-28 02:53:25,872 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2019-11-28 02:53:25,873 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 23 transitions. [2019-11-28 02:53:25,875 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 23 transitions. Word has length 7 [2019-11-28 02:53:25,875 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-28 02:53:25,876 INFO L462 AbstractCegarLoop]: Abstraction has 23 states and 23 transitions. [2019-11-28 02:53:25,876 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-11-28 02:53:25,876 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 23 transitions. [2019-11-28 02:53:25,877 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2019-11-28 02:53:25,877 INFO L402 BasicCegarLoop]: Found error trace [2019-11-28 02:53:25,877 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2019-11-28 02:53:25,878 INFO L410 AbstractCegarLoop]: === Iteration 2 === [isEvenErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, isEvenErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, isOddErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, isOddErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2019-11-28 02:53:25,878 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 02:53:25,878 INFO L82 PathProgramCache]: Analyzing trace with hash 810843732, now seen corresponding path program 1 times [2019-11-28 02:53:25,879 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-28 02:53:25,879 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1722471841] [2019-11-28 02:53:25,880 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-28 02:53:25,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 02:53:25,935 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-28 02:53:25,936 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1722471841] [2019-11-28 02:53:25,936 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-28 02:53:25,937 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-11-28 02:53:25,937 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2099444664] [2019-11-28 02:53:25,939 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-11-28 02:53:25,939 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-28 02:53:25,939 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-11-28 02:53:25,939 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-11-28 02:53:25,940 INFO L87 Difference]: Start difference. First operand 23 states and 23 transitions. Second operand 5 states. [2019-11-28 02:53:25,997 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-28 02:53:25,997 INFO L93 Difference]: Finished difference Result 26 states and 26 transitions. [2019-11-28 02:53:25,998 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-11-28 02:53:25,998 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 8 [2019-11-28 02:53:25,999 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-28 02:53:25,999 INFO L225 Difference]: With dead ends: 26 [2019-11-28 02:53:26,000 INFO L226 Difference]: Without dead ends: 25 [2019-11-28 02:53:26,001 INFO L630 BasicCegarLoop]: 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 [2019-11-28 02:53:26,002 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25 states. [2019-11-28 02:53:26,008 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25 to 24. [2019-11-28 02:53:26,008 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2019-11-28 02:53:26,009 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 24 transitions. [2019-11-28 02:53:26,009 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 24 transitions. Word has length 8 [2019-11-28 02:53:26,010 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-28 02:53:26,010 INFO L462 AbstractCegarLoop]: Abstraction has 24 states and 24 transitions. [2019-11-28 02:53:26,010 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-11-28 02:53:26,010 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 24 transitions. [2019-11-28 02:53:26,011 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2019-11-28 02:53:26,011 INFO L402 BasicCegarLoop]: Found error trace [2019-11-28 02:53:26,011 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-28 02:53:26,011 INFO L410 AbstractCegarLoop]: === Iteration 3 === [isEvenErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, isEvenErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, isOddErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, isOddErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2019-11-28 02:53:26,012 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 02:53:26,012 INFO L82 PathProgramCache]: Analyzing trace with hash 2058121603, now seen corresponding path program 1 times [2019-11-28 02:53:26,012 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-28 02:53:26,013 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1197989859] [2019-11-28 02:53:26,013 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-28 02:53:26,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 02:53:26,111 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-28 02:53:26,112 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1197989859] [2019-11-28 02:53:26,113 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-28 02:53:26,113 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-11-28 02:53:26,113 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [34706127] [2019-11-28 02:53:26,114 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-11-28 02:53:26,114 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-28 02:53:26,115 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-11-28 02:53:26,115 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2019-11-28 02:53:26,116 INFO L87 Difference]: Start difference. First operand 24 states and 24 transitions. Second operand 7 states. [2019-11-28 02:53:26,228 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-28 02:53:26,229 INFO L93 Difference]: Finished difference Result 24 states and 24 transitions. [2019-11-28 02:53:26,229 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-11-28 02:53:26,229 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 13 [2019-11-28 02:53:26,230 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-28 02:53:26,230 INFO L225 Difference]: With dead ends: 24 [2019-11-28 02:53:26,231 INFO L226 Difference]: Without dead ends: 22 [2019-11-28 02:53:26,231 INFO L630 BasicCegarLoop]: 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 [2019-11-28 02:53:26,233 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22 states. [2019-11-28 02:53:26,241 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22 to 22. [2019-11-28 02:53:26,242 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2019-11-28 02:53:26,244 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 22 transitions. [2019-11-28 02:53:26,245 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 22 transitions. Word has length 13 [2019-11-28 02:53:26,246 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-28 02:53:26,247 INFO L462 AbstractCegarLoop]: Abstraction has 22 states and 22 transitions. [2019-11-28 02:53:26,247 INFO L463 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-11-28 02:53:26,248 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 22 transitions. [2019-11-28 02:53:26,248 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2019-11-28 02:53:26,249 INFO L402 BasicCegarLoop]: Found error trace [2019-11-28 02:53:26,250 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-28 02:53:26,250 INFO L410 AbstractCegarLoop]: === Iteration 4 === [isEvenErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, isEvenErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, isOddErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, isOddErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2019-11-28 02:53:26,251 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 02:53:26,251 INFO L82 PathProgramCache]: Analyzing trace with hash -622739689, now seen corresponding path program 1 times [2019-11-28 02:53:26,252 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-28 02:53:26,253 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1021065986] [2019-11-28 02:53:26,253 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-28 02:53:26,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 02:53:26,350 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-28 02:53:26,353 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1021065986] [2019-11-28 02:53:26,353 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-28 02:53:26,354 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2019-11-28 02:53:26,354 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1356082454] [2019-11-28 02:53:26,354 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-11-28 02:53:26,355 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-28 02:53:26,355 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-11-28 02:53:26,355 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2019-11-28 02:53:26,355 INFO L87 Difference]: Start difference. First operand 22 states and 22 transitions. Second operand 7 states. [2019-11-28 02:53:26,456 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-28 02:53:26,456 INFO L93 Difference]: Finished difference Result 30 states and 30 transitions. [2019-11-28 02:53:26,457 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-11-28 02:53:26,457 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 14 [2019-11-28 02:53:26,457 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-28 02:53:26,458 INFO L225 Difference]: With dead ends: 30 [2019-11-28 02:53:26,458 INFO L226 Difference]: Without dead ends: 29 [2019-11-28 02:53:26,459 INFO L630 BasicCegarLoop]: 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 [2019-11-28 02:53:26,460 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2019-11-28 02:53:26,464 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 28. [2019-11-28 02:53:26,465 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2019-11-28 02:53:26,466 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 28 transitions. [2019-11-28 02:53:26,466 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 28 transitions. Word has length 14 [2019-11-28 02:53:26,466 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-28 02:53:26,466 INFO L462 AbstractCegarLoop]: Abstraction has 28 states and 28 transitions. [2019-11-28 02:53:26,466 INFO L463 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-11-28 02:53:26,467 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 28 transitions. [2019-11-28 02:53:26,467 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2019-11-28 02:53:26,468 INFO L402 BasicCegarLoop]: Found error trace [2019-11-28 02:53:26,468 INFO L410 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-28 02:53:26,468 INFO L410 AbstractCegarLoop]: === Iteration 5 === [isEvenErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, isEvenErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, isOddErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, isOddErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2019-11-28 02:53:26,468 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 02:53:26,469 INFO L82 PathProgramCache]: Analyzing trace with hash -2074159416, now seen corresponding path program 1 times [2019-11-28 02:53:26,469 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-28 02:53:26,469 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [968950542] [2019-11-28 02:53:26,470 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-28 02:53:26,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 02:53:26,570 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-28 02:53:26,570 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [968950542] [2019-11-28 02:53:26,570 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [487721266] [2019-11-28 02:53:26,571 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-28 02:53:26,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 02:53:26,620 INFO L255 TraceCheckSpWp]: Trace formula consists of 37 conjuncts, 8 conjunts are in the unsatisfiable core [2019-11-28 02:53:26,629 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-28 02:53:26,672 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-28 02:53:26,673 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-28 02:53:26,674 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 8 [2019-11-28 02:53:26,674 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1171425292] [2019-11-28 02:53:26,676 INFO L442 AbstractCegarLoop]: Interpolant automaton has 9 states [2019-11-28 02:53:26,676 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-28 02:53:26,676 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2019-11-28 02:53:26,678 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2019-11-28 02:53:26,678 INFO L87 Difference]: Start difference. First operand 28 states and 28 transitions. Second operand 9 states. [2019-11-28 02:53:26,821 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-28 02:53:26,821 INFO L93 Difference]: Finished difference Result 36 states and 36 transitions. [2019-11-28 02:53:26,824 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2019-11-28 02:53:26,824 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 20 [2019-11-28 02:53:26,825 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-28 02:53:26,825 INFO L225 Difference]: With dead ends: 36 [2019-11-28 02:53:26,825 INFO L226 Difference]: Without dead ends: 35 [2019-11-28 02:53:26,826 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=32, Invalid=100, Unknown=0, NotChecked=0, Total=132 [2019-11-28 02:53:26,827 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states. [2019-11-28 02:53:26,832 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 34. [2019-11-28 02:53:26,833 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34 states. [2019-11-28 02:53:26,833 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 34 transitions. [2019-11-28 02:53:26,834 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 34 transitions. Word has length 20 [2019-11-28 02:53:26,834 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-28 02:53:26,834 INFO L462 AbstractCegarLoop]: Abstraction has 34 states and 34 transitions. [2019-11-28 02:53:26,834 INFO L463 AbstractCegarLoop]: Interpolant automaton has 9 states. [2019-11-28 02:53:26,835 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 34 transitions. [2019-11-28 02:53:26,835 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2019-11-28 02:53:26,836 INFO L402 BasicCegarLoop]: Found error trace [2019-11-28 02:53:26,836 INFO L410 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1] [2019-11-28 02:53:27,041 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-28 02:53:27,042 INFO L410 AbstractCegarLoop]: === Iteration 6 === [isEvenErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, isEvenErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, isOddErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, isOddErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2019-11-28 02:53:27,043 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 02:53:27,043 INFO L82 PathProgramCache]: Analyzing trace with hash -1675825013, now seen corresponding path program 1 times [2019-11-28 02:53:27,043 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-28 02:53:27,043 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [849187551] [2019-11-28 02:53:27,044 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-28 02:53:27,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 02:53:27,207 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-28 02:53:27,208 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [849187551] [2019-11-28 02:53:27,208 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1614135056] [2019-11-28 02:53:27,208 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2019-11-28 02:53:27,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 02:53:27,241 INFO L255 TraceCheckSpWp]: Trace formula consists of 47 conjuncts, 10 conjunts are in the unsatisfiable core Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-28 02:53:27,245 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-28 02:53:27,268 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-28 02:53:27,269 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-28 02:53:27,269 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 10 [2019-11-28 02:53:27,269 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [325995923] [2019-11-28 02:53:27,271 INFO L442 AbstractCegarLoop]: Interpolant automaton has 11 states [2019-11-28 02:53:27,272 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-28 02:53:27,275 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2019-11-28 02:53:27,276 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2019-11-28 02:53:27,276 INFO L87 Difference]: Start difference. First operand 34 states and 34 transitions. Second operand 11 states. [2019-11-28 02:53:27,446 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-28 02:53:27,447 INFO L93 Difference]: Finished difference Result 42 states and 42 transitions. [2019-11-28 02:53:27,448 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2019-11-28 02:53:27,448 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 26 [2019-11-28 02:53:27,448 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-28 02:53:27,449 INFO L225 Difference]: With dead ends: 42 [2019-11-28 02:53:27,449 INFO L226 Difference]: Without dead ends: 41 [2019-11-28 02:53:27,452 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=45, Invalid=165, Unknown=0, NotChecked=0, Total=210 [2019-11-28 02:53:27,452 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41 states. [2019-11-28 02:53:27,457 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41 to 40. [2019-11-28 02:53:27,458 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 40 states. [2019-11-28 02:53:27,459 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 40 transitions. [2019-11-28 02:53:27,459 INFO L78 Accepts]: Start accepts. Automaton has 40 states and 40 transitions. Word has length 26 [2019-11-28 02:53:27,459 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-28 02:53:27,459 INFO L462 AbstractCegarLoop]: Abstraction has 40 states and 40 transitions. [2019-11-28 02:53:27,459 INFO L463 AbstractCegarLoop]: Interpolant automaton has 11 states. [2019-11-28 02:53:27,460 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 40 transitions. [2019-11-28 02:53:27,461 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2019-11-28 02:53:27,461 INFO L402 BasicCegarLoop]: Found error trace [2019-11-28 02:53:27,461 INFO L410 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1] [2019-11-28 02:53:27,664 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-28 02:53:27,665 INFO L410 AbstractCegarLoop]: === Iteration 7 === [isEvenErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, isEvenErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, isOddErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, isOddErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2019-11-28 02:53:27,665 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 02:53:27,666 INFO L82 PathProgramCache]: Analyzing trace with hash 923017532, now seen corresponding path program 2 times [2019-11-28 02:53:27,666 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-28 02:53:27,666 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1685293058] [2019-11-28 02:53:27,667 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-28 02:53:27,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 02:53:27,841 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 22 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-28 02:53:27,842 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1685293058] [2019-11-28 02:53:27,842 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [794770718] [2019-11-28 02:53:27,842 INFO L92 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2019-11-28 02:53:27,872 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2019-11-28 02:53:27,873 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-28 02:53:27,874 INFO L255 TraceCheckSpWp]: Trace formula consists of 57 conjuncts, 12 conjunts are in the unsatisfiable core [2019-11-28 02:53:27,877 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-28 02:53:27,890 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 22 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-28 02:53:27,890 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-28 02:53:27,891 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12] total 12 [2019-11-28 02:53:27,891 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [952895866] [2019-11-28 02:53:27,892 INFO L442 AbstractCegarLoop]: Interpolant automaton has 13 states [2019-11-28 02:53:27,892 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-28 02:53:27,892 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2019-11-28 02:53:27,893 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=125, Unknown=0, NotChecked=0, Total=156 [2019-11-28 02:53:27,893 INFO L87 Difference]: Start difference. First operand 40 states and 40 transitions. Second operand 13 states. [2019-11-28 02:53:28,097 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-28 02:53:28,097 INFO L93 Difference]: Finished difference Result 48 states and 48 transitions. [2019-11-28 02:53:28,098 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2019-11-28 02:53:28,098 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 32 [2019-11-28 02:53:28,099 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-28 02:53:28,099 INFO L225 Difference]: With dead ends: 48 [2019-11-28 02:53:28,099 INFO L226 Difference]: Without dead ends: 47 [2019-11-28 02:53:28,100 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=63, Invalid=243, Unknown=0, NotChecked=0, Total=306 [2019-11-28 02:53:28,101 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47 states. [2019-11-28 02:53:28,107 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47 to 46. [2019-11-28 02:53:28,107 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 46 states. [2019-11-28 02:53:28,108 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 46 transitions. [2019-11-28 02:53:28,108 INFO L78 Accepts]: Start accepts. Automaton has 46 states and 46 transitions. Word has length 32 [2019-11-28 02:53:28,108 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-28 02:53:28,109 INFO L462 AbstractCegarLoop]: Abstraction has 46 states and 46 transitions. [2019-11-28 02:53:28,109 INFO L463 AbstractCegarLoop]: Interpolant automaton has 13 states. [2019-11-28 02:53:28,109 INFO L276 IsEmpty]: Start isEmpty. Operand 46 states and 46 transitions. [2019-11-28 02:53:28,110 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2019-11-28 02:53:28,110 INFO L402 BasicCegarLoop]: Found error trace [2019-11-28 02:53:28,110 INFO L410 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1] [2019-11-28 02:53:28,313 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-28 02:53:28,314 INFO L410 AbstractCegarLoop]: === Iteration 8 === [isEvenErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, isEvenErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, isOddErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, isOddErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2019-11-28 02:53:28,315 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 02:53:28,315 INFO L82 PathProgramCache]: Analyzing trace with hash -2072669185, now seen corresponding path program 2 times [2019-11-28 02:53:28,316 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-28 02:53:28,316 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2048601129] [2019-11-28 02:53:28,317 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-28 02:53:28,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 02:53:28,486 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 0 proven. 34 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-28 02:53:28,487 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2048601129] [2019-11-28 02:53:28,487 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1428428168] [2019-11-28 02:53:28,487 INFO L92 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-28 02:53:28,521 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2019-11-28 02:53:28,521 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-11-28 02:53:28,522 INFO L255 TraceCheckSpWp]: Trace formula consists of 67 conjuncts, 14 conjunts are in the unsatisfiable core [2019-11-28 02:53:28,525 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-28 02:53:28,537 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 0 proven. 34 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-28 02:53:28,538 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-28 02:53:28,538 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14] total 14 [2019-11-28 02:53:28,539 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [106727733] [2019-11-28 02:53:28,539 INFO L442 AbstractCegarLoop]: Interpolant automaton has 15 states [2019-11-28 02:53:28,539 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-28 02:53:28,540 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2019-11-28 02:53:28,540 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=171, Unknown=0, NotChecked=0, Total=210 [2019-11-28 02:53:28,540 INFO L87 Difference]: Start difference. First operand 46 states and 46 transitions. Second operand 15 states. [2019-11-28 02:53:28,794 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-28 02:53:28,795 INFO L93 Difference]: Finished difference Result 54 states and 54 transitions. [2019-11-28 02:53:28,796 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2019-11-28 02:53:28,797 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 38 [2019-11-28 02:53:28,797 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-28 02:53:28,798 INFO L225 Difference]: With dead ends: 54 [2019-11-28 02:53:28,798 INFO L226 Difference]: Without dead ends: 53 [2019-11-28 02:53:28,799 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 39 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=81, Invalid=339, Unknown=0, NotChecked=0, Total=420 [2019-11-28 02:53:28,799 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53 states. [2019-11-28 02:53:28,805 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53 to 52. [2019-11-28 02:53:28,805 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 52 states. [2019-11-28 02:53:28,806 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 52 transitions. [2019-11-28 02:53:28,807 INFO L78 Accepts]: Start accepts. Automaton has 52 states and 52 transitions. Word has length 38 [2019-11-28 02:53:28,807 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-28 02:53:28,807 INFO L462 AbstractCegarLoop]: Abstraction has 52 states and 52 transitions. [2019-11-28 02:53:28,807 INFO L463 AbstractCegarLoop]: Interpolant automaton has 15 states. [2019-11-28 02:53:28,808 INFO L276 IsEmpty]: Start isEmpty. Operand 52 states and 52 transitions. [2019-11-28 02:53:28,809 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2019-11-28 02:53:28,809 INFO L402 BasicCegarLoop]: Found error trace [2019-11-28 02:53:28,809 INFO L410 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1] [2019-11-28 02:53:29,013 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-28 02:53:29,014 INFO L410 AbstractCegarLoop]: === Iteration 9 === [isEvenErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, isEvenErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, isOddErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, isOddErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2019-11-28 02:53:29,014 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 02:53:29,014 INFO L82 PathProgramCache]: Analyzing trace with hash 225009072, now seen corresponding path program 3 times [2019-11-28 02:53:29,014 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-28 02:53:29,015 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [242003031] [2019-11-28 02:53:29,015 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-28 02:53:29,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 02:53:29,265 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 0 proven. 51 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-28 02:53:29,265 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [242003031] [2019-11-28 02:53:29,266 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [14573535] [2019-11-28 02:53:29,266 INFO L92 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-28 02:53:29,310 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2019-11-28 02:53:29,311 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-11-28 02:53:29,312 INFO L255 TraceCheckSpWp]: Trace formula consists of 77 conjuncts, 16 conjunts are in the unsatisfiable core [2019-11-28 02:53:29,318 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-28 02:53:29,350 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 0 proven. 51 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-28 02:53:29,351 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-28 02:53:29,351 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16] total 16 [2019-11-28 02:53:29,352 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [357841394] [2019-11-28 02:53:29,352 INFO L442 AbstractCegarLoop]: Interpolant automaton has 17 states [2019-11-28 02:53:29,352 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-28 02:53:29,353 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2019-11-28 02:53:29,354 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=223, Unknown=0, NotChecked=0, Total=272 [2019-11-28 02:53:29,354 INFO L87 Difference]: Start difference. First operand 52 states and 52 transitions. Second operand 17 states. [2019-11-28 02:53:29,631 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-28 02:53:29,631 INFO L93 Difference]: Finished difference Result 60 states and 60 transitions. [2019-11-28 02:53:29,631 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2019-11-28 02:53:29,632 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 44 [2019-11-28 02:53:29,632 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-28 02:53:29,633 INFO L225 Difference]: With dead ends: 60 [2019-11-28 02:53:29,633 INFO L226 Difference]: Without dead ends: 59 [2019-11-28 02:53:29,634 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 66 GetRequests, 44 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 58 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=104, Invalid=448, Unknown=0, NotChecked=0, Total=552 [2019-11-28 02:53:29,634 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59 states. [2019-11-28 02:53:29,640 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59 to 58. [2019-11-28 02:53:29,640 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 58 states. [2019-11-28 02:53:29,641 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58 states to 58 states and 58 transitions. [2019-11-28 02:53:29,641 INFO L78 Accepts]: Start accepts. Automaton has 58 states and 58 transitions. Word has length 44 [2019-11-28 02:53:29,642 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-28 02:53:29,642 INFO L462 AbstractCegarLoop]: Abstraction has 58 states and 58 transitions. [2019-11-28 02:53:29,642 INFO L463 AbstractCegarLoop]: Interpolant automaton has 17 states. [2019-11-28 02:53:29,642 INFO L276 IsEmpty]: Start isEmpty. Operand 58 states and 58 transitions. [2019-11-28 02:53:29,643 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2019-11-28 02:53:29,643 INFO L402 BasicCegarLoop]: Found error trace [2019-11-28 02:53:29,643 INFO L410 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 1, 1, 1, 1] [2019-11-28 02:53:29,849 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-28 02:53:29,850 INFO L410 AbstractCegarLoop]: === Iteration 10 === [isEvenErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, isEvenErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, isOddErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, isOddErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2019-11-28 02:53:29,850 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 02:53:29,851 INFO L82 PathProgramCache]: Analyzing trace with hash 693152115, now seen corresponding path program 3 times [2019-11-28 02:53:29,851 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-28 02:53:29,852 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1543883937] [2019-11-28 02:53:29,852 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-28 02:53:29,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 02:53:30,055 INFO L134 CoverageAnalysis]: Checked inductivity of 69 backedges. 0 proven. 69 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-28 02:53:30,056 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1543883937] [2019-11-28 02:53:30,056 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1235682527] [2019-11-28 02:53:30,056 INFO L92 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-28 02:53:30,088 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2019-11-28 02:53:30,088 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-11-28 02:53:30,090 INFO L255 TraceCheckSpWp]: Trace formula consists of 87 conjuncts, 18 conjunts are in the unsatisfiable core [2019-11-28 02:53:30,092 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-28 02:53:30,107 INFO L134 CoverageAnalysis]: Checked inductivity of 69 backedges. 0 proven. 69 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-28 02:53:30,108 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-28 02:53:30,108 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 18] total 18 [2019-11-28 02:53:30,109 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [580266402] [2019-11-28 02:53:30,109 INFO L442 AbstractCegarLoop]: Interpolant automaton has 19 states [2019-11-28 02:53:30,110 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-28 02:53:30,110 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2019-11-28 02:53:30,111 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=59, Invalid=283, Unknown=0, NotChecked=0, Total=342 [2019-11-28 02:53:30,111 INFO L87 Difference]: Start difference. First operand 58 states and 58 transitions. Second operand 19 states. [2019-11-28 02:53:30,383 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-28 02:53:30,384 INFO L93 Difference]: Finished difference Result 66 states and 66 transitions. [2019-11-28 02:53:30,384 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2019-11-28 02:53:30,384 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 50 [2019-11-28 02:53:30,385 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-28 02:53:30,386 INFO L225 Difference]: With dead ends: 66 [2019-11-28 02:53:30,386 INFO L226 Difference]: Without dead ends: 65 [2019-11-28 02:53:30,387 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 75 GetRequests, 50 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 82 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=127, Invalid=575, Unknown=0, NotChecked=0, Total=702 [2019-11-28 02:53:30,388 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 65 states. [2019-11-28 02:53:30,394 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 65 to 64. [2019-11-28 02:53:30,394 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 64 states. [2019-11-28 02:53:30,395 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 64 states to 64 states and 64 transitions. [2019-11-28 02:53:30,395 INFO L78 Accepts]: Start accepts. Automaton has 64 states and 64 transitions. Word has length 50 [2019-11-28 02:53:30,396 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-28 02:53:30,396 INFO L462 AbstractCegarLoop]: Abstraction has 64 states and 64 transitions. [2019-11-28 02:53:30,396 INFO L463 AbstractCegarLoop]: Interpolant automaton has 19 states. [2019-11-28 02:53:30,396 INFO L276 IsEmpty]: Start isEmpty. Operand 64 states and 64 transitions. [2019-11-28 02:53:30,397 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2019-11-28 02:53:30,398 INFO L402 BasicCegarLoop]: Found error trace [2019-11-28 02:53:30,398 INFO L410 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1] [2019-11-28 02:53:30,612 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-28 02:53:30,613 INFO L410 AbstractCegarLoop]: === Iteration 11 === [isEvenErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, isEvenErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, isOddErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, isOddErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2019-11-28 02:53:30,614 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 02:53:30,614 INFO L82 PathProgramCache]: Analyzing trace with hash 1026788388, now seen corresponding path program 4 times [2019-11-28 02:53:30,614 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-28 02:53:30,615 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [981084790] [2019-11-28 02:53:30,615 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-28 02:53:30,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 02:53:30,883 INFO L134 CoverageAnalysis]: Checked inductivity of 92 backedges. 0 proven. 92 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-28 02:53:30,884 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [981084790] [2019-11-28 02:53:30,884 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1431089501] [2019-11-28 02:53:30,884 INFO L92 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-28 02:53:30,923 INFO L249 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2019-11-28 02:53:30,924 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-11-28 02:53:30,925 INFO L255 TraceCheckSpWp]: Trace formula consists of 97 conjuncts, 28 conjunts are in the unsatisfiable core [2019-11-28 02:53:30,928 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-28 02:53:31,035 INFO L134 CoverageAnalysis]: Checked inductivity of 92 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 80 trivial. 0 not checked. [2019-11-28 02:53:31,036 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-28 02:53:31,036 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 8] total 24 [2019-11-28 02:53:31,037 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [132966422] [2019-11-28 02:53:31,037 INFO L442 AbstractCegarLoop]: Interpolant automaton has 25 states [2019-11-28 02:53:31,037 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-28 02:53:31,038 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2019-11-28 02:53:31,038 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=98, Invalid=502, Unknown=0, NotChecked=0, Total=600 [2019-11-28 02:53:31,039 INFO L87 Difference]: Start difference. First operand 64 states and 64 transitions. Second operand 25 states. [2019-11-28 02:53:31,180 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-28 02:53:31,180 INFO L93 Difference]: Finished difference Result 64 states and 64 transitions. [2019-11-28 02:53:31,181 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2019-11-28 02:53:31,181 INFO L78 Accepts]: Start accepts. Automaton has 25 states. Word has length 56 [2019-11-28 02:53:31,181 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-28 02:53:31,181 INFO L225 Difference]: With dead ends: 64 [2019-11-28 02:53:31,182 INFO L226 Difference]: Without dead ends: 0 [2019-11-28 02:53:31,183 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 79 GetRequests, 52 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 160 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=152, Invalid=660, Unknown=0, NotChecked=0, Total=812 [2019-11-28 02:53:31,183 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2019-11-28 02:53:31,184 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2019-11-28 02:53:31,184 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2019-11-28 02:53:31,184 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2019-11-28 02:53:31,184 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 56 [2019-11-28 02:53:31,184 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-28 02:53:31,184 INFO L462 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-11-28 02:53:31,185 INFO L463 AbstractCegarLoop]: Interpolant automaton has 25 states. [2019-11-28 02:53:31,185 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2019-11-28 02:53:31,185 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2019-11-28 02:53:31,385 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-28 02:53:31,387 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2019-11-28 02:53:31,596 INFO L246 CegarLoopResult]: For program point L32(line 32) no Hoare annotation was computed. [2019-11-28 02:53:31,596 INFO L246 CegarLoopResult]: For program point L32-1(line 32) no Hoare annotation was computed. [2019-11-28 02:53:31,596 INFO L242 CegarLoopResult]: At program point L32-2(line 32) the Hoare annotation is: (or (and (not (= isEven_~n 0)) (<= 0 isEven_~n) (<= isEven_~n 2147483647) (not (= isEven_~n 1))) (not (<= |isEven_#in~n| 2147483647)) (not (<= 0 |isEven_#in~n|))) [2019-11-28 02:53:31,596 INFO L246 CegarLoopResult]: For program point L29(lines 29 33) no Hoare annotation was computed. [2019-11-28 02:53:31,597 INFO L246 CegarLoopResult]: For program point L32-3(line 32) no Hoare annotation was computed. [2019-11-28 02:53:31,597 INFO L246 CegarLoopResult]: For program point L27(lines 27 33) no Hoare annotation was computed. [2019-11-28 02:53:31,597 INFO L246 CegarLoopResult]: For program point isEvenErr1ASSERT_VIOLATIONINTEGER_OVERFLOW(line 32) no Hoare annotation was computed. [2019-11-28 02:53:31,597 INFO L249 CegarLoopResult]: At program point isEvenENTRY(lines 26 34) the Hoare annotation is: true [2019-11-28 02:53:31,597 INFO L246 CegarLoopResult]: For program point isEvenErr0ASSERT_VIOLATIONINTEGER_OVERFLOW(line 32) no Hoare annotation was computed. [2019-11-28 02:53:31,597 INFO L246 CegarLoopResult]: For program point isEvenEXIT(lines 26 34) no Hoare annotation was computed. [2019-11-28 02:53:31,597 INFO L246 CegarLoopResult]: For program point isEvenFINAL(lines 26 34) no Hoare annotation was computed. [2019-11-28 02:53:31,597 INFO L246 CegarLoopResult]: For program point L22(line 22) no Hoare annotation was computed. [2019-11-28 02:53:31,598 INFO L246 CegarLoopResult]: For program point L22-1(line 22) no Hoare annotation was computed. [2019-11-28 02:53:31,598 INFO L242 CegarLoopResult]: At program point L22-2(line 22) the Hoare annotation is: (or (and (<= isOdd_~n 2147483646) (<= 1 isOdd_~n)) (not (<= |isOdd_#in~n| 2147483646)) (not (<= 1 |isOdd_#in~n|))) [2019-11-28 02:53:31,598 INFO L246 CegarLoopResult]: For program point L19(lines 19 23) no Hoare annotation was computed. [2019-11-28 02:53:31,598 INFO L246 CegarLoopResult]: For program point L22-3(line 22) no Hoare annotation was computed. [2019-11-28 02:53:31,598 INFO L246 CegarLoopResult]: For program point L17(lines 17 23) no Hoare annotation was computed. [2019-11-28 02:53:31,598 INFO L246 CegarLoopResult]: For program point isOddFINAL(lines 16 24) no Hoare annotation was computed. [2019-11-28 02:53:31,599 INFO L246 CegarLoopResult]: For program point isOddErr0ASSERT_VIOLATIONINTEGER_OVERFLOW(line 22) no Hoare annotation was computed. [2019-11-28 02:53:31,599 INFO L246 CegarLoopResult]: For program point isOddErr1ASSERT_VIOLATIONINTEGER_OVERFLOW(line 22) no Hoare annotation was computed. [2019-11-28 02:53:31,599 INFO L249 CegarLoopResult]: At program point isOddENTRY(lines 16 24) the Hoare annotation is: true [2019-11-28 02:53:31,599 INFO L246 CegarLoopResult]: For program point isOddEXIT(lines 16 24) no Hoare annotation was computed. [2019-11-28 02:53:31,599 INFO L246 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2019-11-28 02:53:31,599 INFO L246 CegarLoopResult]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2019-11-28 02:53:31,599 INFO L246 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2019-11-28 02:53:31,599 INFO L246 CegarLoopResult]: For program point L47(line 47) no Hoare annotation was computed. [2019-11-28 02:53:31,599 INFO L246 CegarLoopResult]: For program point L44(lines 44 48) no Hoare annotation was computed. [2019-11-28 02:53:31,600 INFO L242 CegarLoopResult]: At program point L42(line 42) the Hoare annotation is: (and (<= ULTIMATE.start_main_~n~0 2147483647) (<= 0 ULTIMATE.start_main_~n~0)) [2019-11-28 02:53:31,600 INFO L246 CegarLoopResult]: For program point L42-1(line 42) no Hoare annotation was computed. [2019-11-28 02:53:31,600 INFO L246 CegarLoopResult]: For program point L39(lines 39 41) no Hoare annotation was computed. [2019-11-28 02:53:31,600 INFO L242 CegarLoopResult]: At program point L37(lines 37 49) the Hoare annotation is: (<= ULTIMATE.start_main_~n~0 2147483647) [2019-11-28 02:53:31,616 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 28.11 02:53:31 BoogieIcfgContainer [2019-11-28 02:53:31,616 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-11-28 02:53:31,616 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-11-28 02:53:31,616 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-11-28 02:53:31,617 INFO L275 PluginConnector]: Witness Printer initialized [2019-11-28 02:53:31,617 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 02:53:25" (3/4) ... [2019-11-28 02:53:31,621 INFO L137 WitnessPrinter]: Generating witness for correct program [2019-11-28 02:53:31,627 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure isEven [2019-11-28 02:53:31,627 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure isOdd [2019-11-28 02:53:31,632 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 5 nodes and edges [2019-11-28 02:53:31,633 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2019-11-28 02:53:31,686 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2019-11-28 02:53:31,687 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-11-28 02:53:31,689 INFO L168 Benchmark]: Toolchain (without parser) took 7040.96 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 205.5 MB). Free memory was 955.0 MB in the beginning and 919.4 MB in the end (delta: 35.6 MB). Peak memory consumption was 241.1 MB. Max. memory is 11.5 GB. [2019-11-28 02:53:31,690 INFO L168 Benchmark]: CDTParser took 0.35 ms. Allocated memory is still 1.0 GB. Free memory is still 981.8 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-28 02:53:31,690 INFO L168 Benchmark]: CACSL2BoogieTranslator took 268.20 ms. Allocated memory is still 1.0 GB. Free memory was 955.0 MB in the beginning and 944.2 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. [2019-11-28 02:53:31,691 INFO L168 Benchmark]: Boogie Procedure Inliner took 30.20 ms. Allocated memory is still 1.0 GB. Free memory is still 944.2 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-28 02:53:31,692 INFO L168 Benchmark]: Boogie Preprocessor took 78.86 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 136.8 MB). Free memory was 944.2 MB in the beginning and 1.1 GB in the end (delta: -182.5 MB). Peak memory consumption was 9.8 MB. Max. memory is 11.5 GB. [2019-11-28 02:53:31,692 INFO L168 Benchmark]: RCFGBuilder took 298.55 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 17.6 MB). Peak memory consumption was 17.6 MB. Max. memory is 11.5 GB. [2019-11-28 02:53:31,693 INFO L168 Benchmark]: TraceAbstraction took 6286.39 ms. Allocated memory was 1.2 GB in the beginning and 1.2 GB in the end (delta: 68.7 MB). Free memory was 1.1 GB in the beginning and 919.4 MB in the end (delta: 189.6 MB). Peak memory consumption was 258.3 MB. Max. memory is 11.5 GB. [2019-11-28 02:53:31,693 INFO L168 Benchmark]: Witness Printer took 70.27 ms. Allocated memory is still 1.2 GB. Free memory is still 919.4 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-28 02:53:31,697 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.35 ms. Allocated memory is still 1.0 GB. Free memory is still 981.8 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 268.20 ms. Allocated memory is still 1.0 GB. Free memory was 955.0 MB in the beginning and 944.2 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 30.20 ms. Allocated memory is still 1.0 GB. Free memory is still 944.2 MB. There was no memory consumed. Max. memory is 11.5 GB. * Boogie Preprocessor took 78.86 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 136.8 MB). Free memory was 944.2 MB in the beginning and 1.1 GB in the end (delta: -182.5 MB). Peak memory consumption was 9.8 MB. Max. memory is 11.5 GB. * RCFGBuilder took 298.55 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 17.6 MB). Peak memory consumption was 17.6 MB. Max. memory is 11.5 GB. * TraceAbstraction took 6286.39 ms. Allocated memory was 1.2 GB in the beginning and 1.2 GB in the end (delta: 68.7 MB). Free memory was 1.1 GB in the beginning and 919.4 MB in the end (delta: 189.6 MB). Peak memory consumption was 258.3 MB. Max. memory is 11.5 GB. * Witness Printer took 70.27 ms. Allocated memory is still 1.2 GB. Free memory is still 919.4 MB. There was no memory consumed. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 32]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 32]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 22]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 22]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - AllSpecificationsHoldResult: All specifications hold 4 specifications checked. All of them hold - InvariantResult [Line: 37]: Loop Invariant Derived loop invariant: n <= 2147483647 - StatisticsResult: Ultimate Automizer benchmark data CFG has 3 procedures, 31 locations, 4 error locations. Result: SAFE, OverallTime: 5.9s, OverallIterations: 11, TraceHistogramMax: 5, AutomataDifference: 1.9s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.2s, HoareTripleCheckerStatistics: 97 SDtfs, 273 SDslu, 681 SDs, 0 SdLazy, 1065 SolverSat, 16 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.9s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 418 GetRequests, 264 SyntacticMatches, 0 SemanticMatches, 154 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 380 ImplicationChecksByTransitivity, 1.7s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=64occurred in iteration=10, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 11 MinimizatonAttempts, 11 StatesRemovedByMinimization, 9 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 6 LocationsWithAnnotation, 22 PreInvPairs, 23 NumberOfFragments, 52 HoareAnnotationTreeSize, 22 FomulaSimplifications, 1033 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 6 FomulaSimplificationsInter, 332 FormulaSimplificationTreeSizeReductionInter, 0.1s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 1.7s InterpolantComputationTime, 574 NumberOfCodeBlocks, 574 NumberOfCodeBlocksAsserted, 27 NumberOfCheckSat, 556 ConstructedInterpolants, 0 QuantifiedInterpolants, 99740 SizeOfPredicates, 42 NumberOfNonLiveVariables, 469 ConjunctsInSsa, 106 ConjunctsInUnsatCore, 18 InterpolantComputations, 4 PerfectInterpolantSequences, 80/568 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...