./Ultimate.py --spec /storage/repos/svcomp/c/properties/no-overflow.prp --file /storage/repos/svcomp/c/recursive/EvenOdd03WithOverflowBug_false-no-overflow.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 2e94e6aa Calling Ultimate with: 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 /storage/repos/svcomp/c/recursive/EvenOdd03WithOverflowBug_false-no-overflow.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 1c7eaf6fd654eb823cca8af53b20b25aebb12776 ................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE(OVERFLOW) --- Real Ultimate output --- This is Ultimate 0.1.24-2e94e6a [2019-01-01 21:01:17,901 INFO L170 SettingsManager]: Resetting all preferences to default values... [2019-01-01 21:01:17,903 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2019-01-01 21:01:17,917 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-01-01 21:01:17,917 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-01-01 21:01:17,918 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-01-01 21:01:17,920 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-01-01 21:01:17,922 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2019-01-01 21:01:17,924 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-01-01 21:01:17,925 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-01-01 21:01:17,926 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-01-01 21:01:17,926 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-01-01 21:01:17,927 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-01-01 21:01:17,928 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-01-01 21:01:17,930 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-01-01 21:01:17,930 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-01-01 21:01:17,931 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-01-01 21:01:17,934 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-01-01 21:01:17,936 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2019-01-01 21:01:17,938 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-01-01 21:01:17,939 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-01-01 21:01:17,940 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-01-01 21:01:17,943 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-01-01 21:01:17,944 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-01-01 21:01:17,944 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-01-01 21:01:17,945 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-01-01 21:01:17,946 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-01-01 21:01:17,947 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-01-01 21:01:17,948 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2019-01-01 21:01:17,949 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-01-01 21:01:17,950 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2019-01-01 21:01:17,951 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-01-01 21:01:17,951 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-01-01 21:01:17,951 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2019-01-01 21:01:17,952 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2019-01-01 21:01:17,954 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2019-01-01 21:01:17,954 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf [2019-01-01 21:01:17,980 INFO L110 SettingsManager]: Loading preferences was successful [2019-01-01 21:01:17,981 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2019-01-01 21:01:17,982 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-01-01 21:01:17,982 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2019-01-01 21:01:17,982 INFO L133 SettingsManager]: * Use SBE=true [2019-01-01 21:01:17,983 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-01-01 21:01:17,983 INFO L133 SettingsManager]: * sizeof long=4 [2019-01-01 21:01:17,984 INFO L133 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2019-01-01 21:01:17,984 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2019-01-01 21:01:17,984 INFO L133 SettingsManager]: * sizeof POINTER=4 [2019-01-01 21:01:17,984 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2019-01-01 21:01:17,984 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-01-01 21:01:17,984 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-01-01 21:01:17,985 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-01-01 21:01:17,985 INFO L133 SettingsManager]: * Check absence of signed integer overflows=true [2019-01-01 21:01:17,985 INFO L133 SettingsManager]: * sizeof long double=12 [2019-01-01 21:01:17,985 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2019-01-01 21:01:17,985 INFO L133 SettingsManager]: * Use constant arrays=true [2019-01-01 21:01:17,985 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-01-01 21:01:17,987 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-01-01 21:01:17,987 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-01-01 21:01:17,988 INFO L133 SettingsManager]: * To the following directory=./dump/ [2019-01-01 21:01:17,988 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2019-01-01 21:01:17,988 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-01-01 21:01:17,988 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-01-01 21:01:17,988 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-01-01 21:01:17,989 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-01-01 21:01:17,989 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2019-01-01 21:01:17,990 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-01-01 21:01:17,990 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-01-01 21:01:17,990 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true 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 -> 1c7eaf6fd654eb823cca8af53b20b25aebb12776 [2019-01-01 21:01:18,050 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-01-01 21:01:18,069 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-01-01 21:01:18,075 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-01-01 21:01:18,077 INFO L271 PluginConnector]: Initializing CDTParser... [2019-01-01 21:01:18,078 INFO L276 PluginConnector]: CDTParser initialized [2019-01-01 21:01:18,078 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/svcomp/c/recursive/EvenOdd03WithOverflowBug_false-no-overflow.c [2019-01-01 21:01:18,149 INFO L221 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/879e9882f/e0cd613843684947a5513fc2bd0cb158/FLAGe4c6a4056 [2019-01-01 21:01:18,597 INFO L307 CDTParser]: Found 1 translation units. [2019-01-01 21:01:18,598 INFO L161 CDTParser]: Scanning /storage/repos/svcomp/c/recursive/EvenOdd03WithOverflowBug_false-no-overflow.c [2019-01-01 21:01:18,607 INFO L355 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/879e9882f/e0cd613843684947a5513fc2bd0cb158/FLAGe4c6a4056 [2019-01-01 21:01:18,935 INFO L363 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/879e9882f/e0cd613843684947a5513fc2bd0cb158 [2019-01-01 21:01:18,939 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-01-01 21:01:18,941 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2019-01-01 21:01:18,942 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-01-01 21:01:18,942 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-01-01 21:01:18,947 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2019-01-01 21:01:18,948 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.01 09:01:18" (1/1) ... [2019-01-01 21:01:18,951 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7840aca5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.01 09:01:18, skipping insertion in model container [2019-01-01 21:01:18,951 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.01 09:01:18" (1/1) ... [2019-01-01 21:01:18,960 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2019-01-01 21:01:18,983 INFO L176 MainTranslator]: Built tables and reachable declarations [2019-01-01 21:01:19,222 INFO L204 PostProcessor]: Analyzing one entry point: main [2019-01-01 21:01:19,231 INFO L191 MainTranslator]: Completed pre-run [2019-01-01 21:01:19,248 INFO L204 PostProcessor]: Analyzing one entry point: main [2019-01-01 21:01:19,264 INFO L195 MainTranslator]: Completed translation [2019-01-01 21:01:19,264 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.01 09:01:19 WrapperNode [2019-01-01 21:01:19,265 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-01-01 21:01:19,265 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-01-01 21:01:19,266 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-01-01 21:01:19,266 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2019-01-01 21:01:19,276 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.01 09:01:19" (1/1) ... [2019-01-01 21:01:19,281 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.01 09:01:19" (1/1) ... [2019-01-01 21:01:19,306 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-01-01 21:01:19,307 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-01-01 21:01:19,308 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-01-01 21:01:19,308 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2019-01-01 21:01:19,318 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.01 09:01:19" (1/1) ... [2019-01-01 21:01:19,318 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.01 09:01:19" (1/1) ... [2019-01-01 21:01:19,319 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.01 09:01:19" (1/1) ... [2019-01-01 21:01:19,320 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.01 09:01:19" (1/1) ... [2019-01-01 21:01:19,327 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.01 09:01:19" (1/1) ... [2019-01-01 21:01:19,331 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.01 09:01:19" (1/1) ... [2019-01-01 21:01:19,332 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.01 09:01:19" (1/1) ... [2019-01-01 21:01:19,336 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-01-01 21:01:19,337 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-01-01 21:01:19,337 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-01-01 21:01:19,337 INFO L276 PluginConnector]: RCFGBuilder initialized [2019-01-01 21:01:19,340 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.01 09:01:19" (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 [2019-01-01 21:01:19,467 INFO L130 BoogieDeclarations]: Found specification of procedure isEven [2019-01-01 21:01:19,468 INFO L138 BoogieDeclarations]: Found implementation of procedure isEven [2019-01-01 21:01:19,468 INFO L130 BoogieDeclarations]: Found specification of procedure isOdd [2019-01-01 21:01:19,469 INFO L138 BoogieDeclarations]: Found implementation of procedure isOdd [2019-01-01 21:01:19,469 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-01-01 21:01:19,469 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-01-01 21:01:19,861 INFO L275 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-01-01 21:01:19,862 INFO L280 CfgBuilder]: Removed 4 assue(true) statements. [2019-01-01 21:01:19,862 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.01 09:01:19 BoogieIcfgContainer [2019-01-01 21:01:19,862 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-01-01 21:01:19,864 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-01-01 21:01:19,864 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-01-01 21:01:19,867 INFO L276 PluginConnector]: TraceAbstraction initialized [2019-01-01 21:01:19,868 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 01.01 09:01:18" (1/3) ... [2019-01-01 21:01:19,869 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@543d27dc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.01 09:01:19, skipping insertion in model container [2019-01-01 21:01:19,869 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.01 09:01:19" (2/3) ... [2019-01-01 21:01:19,870 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@543d27dc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.01 09:01:19, skipping insertion in model container [2019-01-01 21:01:19,871 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.01 09:01:19" (3/3) ... [2019-01-01 21:01:19,872 INFO L112 eAbstractionObserver]: Analyzing ICFG EvenOdd03WithOverflowBug_false-no-overflow.c [2019-01-01 21:01:19,881 INFO L156 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-01-01 21:01:19,889 INFO L168 ceAbstractionStarter]: Appying trace abstraction to program that has 4 error locations. [2019-01-01 21:01:19,905 INFO L257 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2019-01-01 21:01:19,944 INFO L133 ementStrategyFactory]: Using default assertion order modulation [2019-01-01 21:01:19,945 INFO L382 AbstractCegarLoop]: Interprodecural is true [2019-01-01 21:01:19,945 INFO L383 AbstractCegarLoop]: Hoare is true [2019-01-01 21:01:19,945 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-01-01 21:01:19,946 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-01-01 21:01:19,946 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-01-01 21:01:19,946 INFO L387 AbstractCegarLoop]: Difference is false [2019-01-01 21:01:19,946 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-01-01 21:01:19,946 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-01-01 21:01:19,972 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states. [2019-01-01 21:01:19,978 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2019-01-01 21:01:19,978 INFO L394 BasicCegarLoop]: Found error trace [2019-01-01 21:01:19,979 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2019-01-01 21:01:19,982 INFO L423 AbstractCegarLoop]: === Iteration 1 === [isEvenErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, isEvenErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, isOddErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, isOddErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2019-01-01 21:01:19,986 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-01-01 21:01:19,987 INFO L82 PathProgramCache]: Analyzing trace with hash 1878445815, now seen corresponding path program 1 times [2019-01-01 21:01:19,988 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-01-01 21:01:19,989 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-01-01 21:01:20,031 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-01-01 21:01:20,031 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-01-01 21:01:20,031 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-01-01 21:01:20,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-01-01 21:01:20,199 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-01-01 21:01:20,202 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-01-01 21:01:20,203 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-01-01 21:01:20,208 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-01-01 21:01:20,221 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-01-01 21:01:20,222 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-01-01 21:01:20,224 INFO L87 Difference]: Start difference. First operand 30 states. Second operand 5 states. [2019-01-01 21:01:20,386 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-01-01 21:01:20,386 INFO L93 Difference]: Finished difference Result 46 states and 52 transitions. [2019-01-01 21:01:20,387 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-01-01 21:01:20,388 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 6 [2019-01-01 21:01:20,388 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-01-01 21:01:20,397 INFO L225 Difference]: With dead ends: 46 [2019-01-01 21:01:20,397 INFO L226 Difference]: Without dead ends: 25 [2019-01-01 21:01:20,401 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2019-01-01 21:01:20,420 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25 states. [2019-01-01 21:01:20,439 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25 to 22. [2019-01-01 21:01:20,441 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2019-01-01 21:01:20,442 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 22 transitions. [2019-01-01 21:01:20,444 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 22 transitions. Word has length 6 [2019-01-01 21:01:20,444 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-01-01 21:01:20,445 INFO L480 AbstractCegarLoop]: Abstraction has 22 states and 22 transitions. [2019-01-01 21:01:20,445 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-01-01 21:01:20,445 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 22 transitions. [2019-01-01 21:01:20,445 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2019-01-01 21:01:20,445 INFO L394 BasicCegarLoop]: Found error trace [2019-01-01 21:01:20,446 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2019-01-01 21:01:20,446 INFO L423 AbstractCegarLoop]: === Iteration 2 === [isEvenErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, isEvenErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, isOddErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, isOddErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2019-01-01 21:01:20,446 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-01-01 21:01:20,446 INFO L82 PathProgramCache]: Analyzing trace with hash -1897721837, now seen corresponding path program 1 times [2019-01-01 21:01:20,447 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-01-01 21:01:20,447 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-01-01 21:01:20,448 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-01-01 21:01:20,448 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-01-01 21:01:20,448 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-01-01 21:01:20,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-01-01 21:01:20,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-01-01 21:01:20,481 INFO L469 BasicCegarLoop]: Counterexample might be feasible [2019-01-01 21:01:20,508 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 01.01 09:01:20 BoogieIcfgContainer [2019-01-01 21:01:20,508 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-01-01 21:01:20,508 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-01-01 21:01:20,509 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-01-01 21:01:20,509 INFO L276 PluginConnector]: Witness Printer initialized [2019-01-01 21:01:20,509 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.01 09:01:19" (3/4) ... [2019-01-01 21:01:20,512 INFO L138 WitnessPrinter]: Generating witness for reachability counterexample [2019-01-01 21:01:20,561 INFO L145 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2019-01-01 21:01:20,561 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-01-01 21:01:20,562 INFO L168 Benchmark]: Toolchain (without parser) took 1621.71 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 109.6 MB). Free memory was 951.4 MB in the beginning and 1.1 GB in the end (delta: -100.0 MB). Peak memory consumption was 9.6 MB. Max. memory is 11.5 GB. [2019-01-01 21:01:20,564 INFO L168 Benchmark]: CDTParser took 0.17 ms. Allocated memory is still 1.0 GB. Free memory is still 978.2 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-01-01 21:01:20,564 INFO L168 Benchmark]: CACSL2BoogieTranslator took 322.64 ms. Allocated memory is still 1.0 GB. Free memory was 951.4 MB in the beginning and 940.6 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. [2019-01-01 21:01:20,565 INFO L168 Benchmark]: Boogie Procedure Inliner took 40.90 ms. Allocated memory is still 1.0 GB. Free memory is still 940.6 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-01-01 21:01:20,566 INFO L168 Benchmark]: Boogie Preprocessor took 29.26 ms. Allocated memory is still 1.0 GB. Free memory was 940.6 MB in the beginning and 935.3 MB in the end (delta: 5.4 MB). Peak memory consumption was 5.4 MB. Max. memory is 11.5 GB. [2019-01-01 21:01:20,567 INFO L168 Benchmark]: RCFGBuilder took 526.07 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 109.6 MB). Free memory was 935.3 MB in the beginning and 1.1 GB in the end (delta: -143.4 MB). Peak memory consumption was 13.1 MB. Max. memory is 11.5 GB. [2019-01-01 21:01:20,568 INFO L168 Benchmark]: TraceAbstraction took 644.15 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 27.4 MB). Peak memory consumption was 27.4 MB. Max. memory is 11.5 GB. [2019-01-01 21:01:20,569 INFO L168 Benchmark]: Witness Printer took 52.36 ms. Allocated memory is still 1.1 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. [2019-01-01 21:01:20,573 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.17 ms. Allocated memory is still 1.0 GB. Free memory is still 978.2 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 322.64 ms. Allocated memory is still 1.0 GB. Free memory was 951.4 MB in the beginning and 940.6 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 40.90 ms. Allocated memory is still 1.0 GB. Free memory is still 940.6 MB. There was no memory consumed. Max. memory is 11.5 GB. * Boogie Preprocessor took 29.26 ms. Allocated memory is still 1.0 GB. Free memory was 940.6 MB in the beginning and 935.3 MB in the end (delta: 5.4 MB). Peak memory consumption was 5.4 MB. Max. memory is 11.5 GB. * RCFGBuilder took 526.07 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 109.6 MB). Free memory was 935.3 MB in the beginning and 1.1 GB in the end (delta: -143.4 MB). Peak memory consumption was 13.1 MB. Max. memory is 11.5 GB. * TraceAbstraction took 644.15 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 27.4 MB). Peak memory consumption was 27.4 MB. Max. memory is 11.5 GB. * Witness Printer took 52.36 ms. Allocated memory is still 1.1 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 32]: integer overflow possible integer overflow possible We found a FailurePath: [L38] int n = __VERIFIER_nondet_int(); [L39] CALL isEven(n) VAL [\old(n)=-2147483648] [L27] COND FALSE !(n == 0) VAL [\old(n)=-2147483648, n=-2147483648] [L29] COND FALSE !(n == 1) VAL [\old(n)=-2147483648, n=-2147483648] [L32] n - 1 VAL [\old(n)=-2147483648, n=-2147483648] - StatisticsResult: Ultimate Automizer benchmark data CFG has 3 procedures, 30 locations, 4 error locations. UNSAFE Result, 0.5s OverallTime, 2 OverallIterations, 1 TraceHistogramMax, 0.1s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 25 SDtfs, 23 SDslu, 72 SDs, 0 SdLazy, 30 SolverSat, 5 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 4 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=30occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s AbstIntTime, 0 AbstIntIterations, 0 AbstIntStrong, NaN AbsIntWeakeningRatio, NaN AbsIntAvgWeakeningVarsNumRemoved, NaN AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 1 MinimizatonAttempts, 3 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.1s InterpolantComputationTime, 13 NumberOfCodeBlocks, 13 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 5 ConstructedInterpolants, 0 QuantifiedInterpolants, 75 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 1 InterpolantComputations, 1 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! Received shutdown request...