./Ultimate.py --spec /storage/repos/svcomp/c/properties/no-overflow.prp --file /storage/repos/svcomp/c/termination-crafted-lit/LeeJonesBen-Amram-POPL2001-Ex2_false-no-overflow.c --full-output --architecture 64bit -------------------------------------------------------------------------------- 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/termination-crafted-lit/LeeJonesBen-Amram-POPL2001-Ex2_false-no-overflow.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-64bit-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 64bit --witnessprinter.graph.data.programhash f1df70d37f8afdd882c0c58eaed03ed11e314407 ........................................................................................................................................................................................................................................................................................................ 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 20:36:30,841 INFO L170 SettingsManager]: Resetting all preferences to default values... [2019-01-01 20:36:30,844 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2019-01-01 20:36:30,860 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-01-01 20:36:30,861 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-01-01 20:36:30,863 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-01-01 20:36:30,864 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-01-01 20:36:30,866 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2019-01-01 20:36:30,868 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-01-01 20:36:30,868 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-01-01 20:36:30,869 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-01-01 20:36:30,869 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-01-01 20:36:30,870 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-01-01 20:36:30,871 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-01-01 20:36:30,872 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-01-01 20:36:30,873 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-01-01 20:36:30,874 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-01-01 20:36:30,876 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-01-01 20:36:30,878 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2019-01-01 20:36:30,879 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-01-01 20:36:30,881 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-01-01 20:36:30,882 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-01-01 20:36:30,884 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-01-01 20:36:30,885 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-01-01 20:36:30,885 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-01-01 20:36:30,886 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-01-01 20:36:30,887 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-01-01 20:36:30,888 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-01-01 20:36:30,889 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2019-01-01 20:36:30,890 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-01-01 20:36:30,890 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2019-01-01 20:36:30,891 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-01-01 20:36:30,891 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-01-01 20:36:30,891 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2019-01-01 20:36:30,892 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2019-01-01 20:36:30,893 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2019-01-01 20:36:30,893 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-64bit-Automizer_Default.epf [2019-01-01 20:36:30,913 INFO L110 SettingsManager]: Loading preferences was successful [2019-01-01 20:36:30,913 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2019-01-01 20:36:30,914 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-01-01 20:36:30,914 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2019-01-01 20:36:30,915 INFO L133 SettingsManager]: * Use SBE=true [2019-01-01 20:36:30,915 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-01-01 20:36:30,915 INFO L133 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2019-01-01 20:36:30,915 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2019-01-01 20:36:30,916 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2019-01-01 20:36:30,916 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-01-01 20:36:30,916 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-01-01 20:36:30,916 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-01-01 20:36:30,916 INFO L133 SettingsManager]: * Check absence of signed integer overflows=true [2019-01-01 20:36:30,917 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2019-01-01 20:36:30,917 INFO L133 SettingsManager]: * Use constant arrays=true [2019-01-01 20:36:30,917 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-01-01 20:36:30,917 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-01-01 20:36:30,917 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-01-01 20:36:30,918 INFO L133 SettingsManager]: * To the following directory=./dump/ [2019-01-01 20:36:30,918 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2019-01-01 20:36:30,918 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-01-01 20:36:30,918 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-01-01 20:36:30,918 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-01-01 20:36:30,919 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-01-01 20:36:30,919 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2019-01-01 20:36:30,919 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-01-01 20:36:30,919 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-01-01 20:36:30,919 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 -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> f1df70d37f8afdd882c0c58eaed03ed11e314407 [2019-01-01 20:36:30,965 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-01-01 20:36:30,984 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-01-01 20:36:30,991 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-01-01 20:36:30,993 INFO L271 PluginConnector]: Initializing CDTParser... [2019-01-01 20:36:30,994 INFO L276 PluginConnector]: CDTParser initialized [2019-01-01 20:36:30,994 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/svcomp/c/termination-crafted-lit/LeeJonesBen-Amram-POPL2001-Ex2_false-no-overflow.c [2019-01-01 20:36:31,057 INFO L221 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/fd6fe6ddd/d1d310553cdf4e0f841dd01da5231f28/FLAG2d46970f4 [2019-01-01 20:36:31,465 INFO L307 CDTParser]: Found 1 translation units. [2019-01-01 20:36:31,465 INFO L161 CDTParser]: Scanning /storage/repos/svcomp/c/termination-crafted-lit/LeeJonesBen-Amram-POPL2001-Ex2_false-no-overflow.c [2019-01-01 20:36:31,472 INFO L355 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/fd6fe6ddd/d1d310553cdf4e0f841dd01da5231f28/FLAG2d46970f4 [2019-01-01 20:36:31,854 INFO L363 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/fd6fe6ddd/d1d310553cdf4e0f841dd01da5231f28 [2019-01-01 20:36:31,858 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-01-01 20:36:31,860 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2019-01-01 20:36:31,861 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-01-01 20:36:31,861 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-01-01 20:36:31,867 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2019-01-01 20:36:31,868 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.01 08:36:31" (1/1) ... [2019-01-01 20:36:31,871 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4592833f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.01 08:36:31, skipping insertion in model container [2019-01-01 20:36:31,872 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.01 08:36:31" (1/1) ... [2019-01-01 20:36:31,880 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2019-01-01 20:36:31,899 INFO L176 MainTranslator]: Built tables and reachable declarations [2019-01-01 20:36:32,105 INFO L204 PostProcessor]: Analyzing one entry point: main [2019-01-01 20:36:32,111 INFO L191 MainTranslator]: Completed pre-run [2019-01-01 20:36:32,136 INFO L204 PostProcessor]: Analyzing one entry point: main [2019-01-01 20:36:32,156 INFO L195 MainTranslator]: Completed translation [2019-01-01 20:36:32,157 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.01 08:36:32 WrapperNode [2019-01-01 20:36:32,157 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-01-01 20:36:32,159 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-01-01 20:36:32,159 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-01-01 20:36:32,160 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2019-01-01 20:36:32,170 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.01 08:36:32" (1/1) ... [2019-01-01 20:36:32,176 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.01 08:36:32" (1/1) ... [2019-01-01 20:36:32,197 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-01-01 20:36:32,197 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-01-01 20:36:32,197 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-01-01 20:36:32,197 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2019-01-01 20:36:32,207 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.01 08:36:32" (1/1) ... [2019-01-01 20:36:32,207 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.01 08:36:32" (1/1) ... [2019-01-01 20:36:32,208 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.01 08:36:32" (1/1) ... [2019-01-01 20:36:32,208 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.01 08:36:32" (1/1) ... [2019-01-01 20:36:32,210 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.01 08:36:32" (1/1) ... [2019-01-01 20:36:32,213 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.01 08:36:32" (1/1) ... [2019-01-01 20:36:32,214 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.01 08:36:32" (1/1) ... [2019-01-01 20:36:32,215 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-01-01 20:36:32,216 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-01-01 20:36:32,216 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-01-01 20:36:32,216 INFO L276 PluginConnector]: RCFGBuilder initialized [2019-01-01 20:36:32,222 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.01 08:36:32" (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 20:36:32,344 INFO L130 BoogieDeclarations]: Found specification of procedure f [2019-01-01 20:36:32,344 INFO L138 BoogieDeclarations]: Found implementation of procedure f [2019-01-01 20:36:32,345 INFO L130 BoogieDeclarations]: Found specification of procedure g [2019-01-01 20:36:32,345 INFO L138 BoogieDeclarations]: Found implementation of procedure g [2019-01-01 20:36:32,345 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-01-01 20:36:32,345 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-01-01 20:36:32,687 INFO L275 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-01-01 20:36:32,687 INFO L280 CfgBuilder]: Removed 4 assue(true) statements. [2019-01-01 20:36:32,688 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.01 08:36:32 BoogieIcfgContainer [2019-01-01 20:36:32,688 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-01-01 20:36:32,689 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-01-01 20:36:32,689 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-01-01 20:36:32,692 INFO L276 PluginConnector]: TraceAbstraction initialized [2019-01-01 20:36:32,693 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 01.01 08:36:31" (1/3) ... [2019-01-01 20:36:32,693 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@75ee539c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.01 08:36:32, skipping insertion in model container [2019-01-01 20:36:32,693 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.01 08:36:32" (2/3) ... [2019-01-01 20:36:32,694 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@75ee539c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.01 08:36:32, skipping insertion in model container [2019-01-01 20:36:32,694 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.01 08:36:32" (3/3) ... [2019-01-01 20:36:32,696 INFO L112 eAbstractionObserver]: Analyzing ICFG LeeJonesBen-Amram-POPL2001-Ex2_false-no-overflow.c [2019-01-01 20:36:32,704 INFO L156 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-01-01 20:36:32,711 INFO L168 ceAbstractionStarter]: Appying trace abstraction to program that has 4 error locations. [2019-01-01 20:36:32,724 INFO L257 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2019-01-01 20:36:32,755 INFO L133 ementStrategyFactory]: Using default assertion order modulation [2019-01-01 20:36:32,756 INFO L382 AbstractCegarLoop]: Interprodecural is true [2019-01-01 20:36:32,756 INFO L383 AbstractCegarLoop]: Hoare is true [2019-01-01 20:36:32,756 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-01-01 20:36:32,756 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-01-01 20:36:32,756 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-01-01 20:36:32,757 INFO L387 AbstractCegarLoop]: Difference is false [2019-01-01 20:36:32,757 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-01-01 20:36:32,757 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-01-01 20:36:32,776 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states. [2019-01-01 20:36:32,782 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2019-01-01 20:36:32,782 INFO L394 BasicCegarLoop]: Found error trace [2019-01-01 20:36:32,784 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2019-01-01 20:36:32,786 INFO L423 AbstractCegarLoop]: === Iteration 1 === [fErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, gErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, gErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2019-01-01 20:36:32,792 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-01-01 20:36:32,792 INFO L82 PathProgramCache]: Analyzing trace with hash 1512012543, now seen corresponding path program 1 times [2019-01-01 20:36:32,795 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-01-01 20:36:32,795 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-01-01 20:36:32,851 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-01-01 20:36:32,852 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-01-01 20:36:32,852 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-01-01 20:36:32,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-01-01 20:36:33,005 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 20:36:33,007 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-01-01 20:36:33,007 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-01-01 20:36:33,011 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-01-01 20:36:33,023 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-01-01 20:36:33,024 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-01-01 20:36:33,026 INFO L87 Difference]: Start difference. First operand 27 states. Second operand 5 states. [2019-01-01 20:36:33,177 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-01-01 20:36:33,177 INFO L93 Difference]: Finished difference Result 39 states and 42 transitions. [2019-01-01 20:36:33,178 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-01-01 20:36:33,179 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 6 [2019-01-01 20:36:33,180 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-01-01 20:36:33,188 INFO L225 Difference]: With dead ends: 39 [2019-01-01 20:36:33,188 INFO L226 Difference]: Without dead ends: 22 [2019-01-01 20:36:33,192 INFO L631 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 [2019-01-01 20:36:33,207 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22 states. [2019-01-01 20:36:33,221 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22 to 19. [2019-01-01 20:36:33,222 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2019-01-01 20:36:33,223 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 19 transitions. [2019-01-01 20:36:33,225 INFO L78 Accepts]: Start accepts. Automaton has 19 states and 19 transitions. Word has length 6 [2019-01-01 20:36:33,225 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-01-01 20:36:33,226 INFO L480 AbstractCegarLoop]: Abstraction has 19 states and 19 transitions. [2019-01-01 20:36:33,226 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-01-01 20:36:33,226 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 19 transitions. [2019-01-01 20:36:33,226 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2019-01-01 20:36:33,227 INFO L394 BasicCegarLoop]: Found error trace [2019-01-01 20:36:33,227 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2019-01-01 20:36:33,227 INFO L423 AbstractCegarLoop]: === Iteration 2 === [fErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, gErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, gErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2019-01-01 20:36:33,228 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-01-01 20:36:33,228 INFO L82 PathProgramCache]: Analyzing trace with hash -372251385, now seen corresponding path program 1 times [2019-01-01 20:36:33,228 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-01-01 20:36:33,228 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-01-01 20:36:33,229 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-01-01 20:36:33,230 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-01-01 20:36:33,230 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-01-01 20:36:33,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-01-01 20:36:33,333 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 20:36:33,333 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-01-01 20:36:33,333 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-01-01 20:36:33,336 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-01-01 20:36:33,337 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-01-01 20:36:33,337 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-01-01 20:36:33,338 INFO L87 Difference]: Start difference. First operand 19 states and 19 transitions. Second operand 5 states. [2019-01-01 20:36:33,519 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-01-01 20:36:33,519 INFO L93 Difference]: Finished difference Result 22 states and 22 transitions. [2019-01-01 20:36:33,520 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-01-01 20:36:33,520 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 7 [2019-01-01 20:36:33,521 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-01-01 20:36:33,521 INFO L225 Difference]: With dead ends: 22 [2019-01-01 20:36:33,522 INFO L226 Difference]: Without dead ends: 21 [2019-01-01 20:36:33,523 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 1 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 20:36:33,523 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21 states. [2019-01-01 20:36:33,527 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21 to 20. [2019-01-01 20:36:33,527 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2019-01-01 20:36:33,528 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 20 transitions. [2019-01-01 20:36:33,528 INFO L78 Accepts]: Start accepts. Automaton has 20 states and 20 transitions. Word has length 7 [2019-01-01 20:36:33,528 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-01-01 20:36:33,529 INFO L480 AbstractCegarLoop]: Abstraction has 20 states and 20 transitions. [2019-01-01 20:36:33,529 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-01-01 20:36:33,530 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 20 transitions. [2019-01-01 20:36:33,530 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2019-01-01 20:36:33,530 INFO L394 BasicCegarLoop]: Found error trace [2019-01-01 20:36:33,530 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-01-01 20:36:33,531 INFO L423 AbstractCegarLoop]: === Iteration 3 === [fErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, gErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, gErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2019-01-01 20:36:33,531 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-01-01 20:36:33,531 INFO L82 PathProgramCache]: Analyzing trace with hash -135389413, now seen corresponding path program 1 times [2019-01-01 20:36:33,531 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-01-01 20:36:33,531 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-01-01 20:36:33,534 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-01-01 20:36:33,534 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-01-01 20:36:33,534 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-01-01 20:36:33,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-01-01 20:36:33,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-01-01 20:36:33,590 INFO L469 BasicCegarLoop]: Counterexample might be feasible [2019-01-01 20:36:33,618 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 01.01 08:36:33 BoogieIcfgContainer [2019-01-01 20:36:33,619 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-01-01 20:36:33,619 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-01-01 20:36:33,619 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-01-01 20:36:33,619 INFO L276 PluginConnector]: Witness Printer initialized [2019-01-01 20:36:33,620 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.01 08:36:32" (3/4) ... [2019-01-01 20:36:33,623 INFO L138 WitnessPrinter]: Generating witness for reachability counterexample [2019-01-01 20:36:33,672 INFO L145 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2019-01-01 20:36:33,672 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-01-01 20:36:33,673 INFO L168 Benchmark]: Toolchain (without parser) took 1814.25 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 139.5 MB). Free memory was 942.0 MB in the beginning and 1.1 GB in the end (delta: -128.5 MB). Peak memory consumption was 10.9 MB. Max. memory is 11.5 GB. [2019-01-01 20:36:33,675 INFO L168 Benchmark]: CDTParser took 1.39 ms. Allocated memory is still 1.0 GB. Free memory is still 972.8 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-01-01 20:36:33,676 INFO L168 Benchmark]: CACSL2BoogieTranslator took 297.67 ms. Allocated memory is still 1.0 GB. Free memory was 942.0 MB in the beginning and 931.2 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. [2019-01-01 20:36:33,677 INFO L168 Benchmark]: Boogie Procedure Inliner took 37.56 ms. Allocated memory is still 1.0 GB. Free memory is still 931.2 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-01-01 20:36:33,678 INFO L168 Benchmark]: Boogie Preprocessor took 18.39 ms. Allocated memory is still 1.0 GB. Free memory is still 931.2 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-01-01 20:36:33,679 INFO L168 Benchmark]: RCFGBuilder took 472.44 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 139.5 MB). Free memory was 931.2 MB in the beginning and 1.1 GB in the end (delta: -181.2 MB). Peak memory consumption was 25.0 MB. Max. memory is 11.5 GB. [2019-01-01 20:36:33,680 INFO L168 Benchmark]: TraceAbstraction took 929.82 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: 35.2 MB). Peak memory consumption was 35.2 MB. Max. memory is 11.5 GB. [2019-01-01 20:36:33,681 INFO L168 Benchmark]: Witness Printer took 53.01 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: 6.7 MB). Peak memory consumption was 6.7 MB. Max. memory is 11.5 GB. [2019-01-01 20:36:33,686 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 1.39 ms. Allocated memory is still 1.0 GB. Free memory is still 972.8 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 297.67 ms. Allocated memory is still 1.0 GB. Free memory was 942.0 MB in the beginning and 931.2 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 37.56 ms. Allocated memory is still 1.0 GB. Free memory is still 931.2 MB. There was no memory consumed. Max. memory is 11.5 GB. * Boogie Preprocessor took 18.39 ms. Allocated memory is still 1.0 GB. Free memory is still 931.2 MB. There was no memory consumed. Max. memory is 11.5 GB. * RCFGBuilder took 472.44 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 139.5 MB). Free memory was 931.2 MB in the beginning and 1.1 GB in the end (delta: -181.2 MB). Peak memory consumption was 25.0 MB. Max. memory is 11.5 GB. * TraceAbstraction took 929.82 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: 35.2 MB). Peak memory consumption was 35.2 MB. Max. memory is 11.5 GB. * Witness Printer took 53.01 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: 6.7 MB). Peak memory consumption was 6.7 MB. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 26]: integer overflow possible integer overflow possible We found a FailurePath: [L30] int i = __VERIFIER_nondet_int(); [L31] int x = __VERIFIER_nondet_int(); [L32] COND TRUE i >= 0 && x >= 0 [L33] CALL f(i,x) VAL [\old(i)=1, \old(x)=2147483647] [L18] COND FALSE !(i==0) VAL [\old(i)=1, \old(x)=2147483647, i=1, x=2147483647] [L21] EXPR i-1 VAL [\old(i)=1, \old(x)=2147483647, i=1, x=2147483647] [L21] CALL g(i-1,x,i) VAL [\old(a)=0, \old(b)=2147483647, \old(c)=1] [L26] b+c VAL [\old(a)=0, \old(b)=2147483647, \old(c)=1, a=0, b=2147483647, c=1] - StatisticsResult: Ultimate Automizer benchmark data CFG has 3 procedures, 27 locations, 4 error locations. UNSAFE Result, 0.8s OverallTime, 3 OverallIterations, 1 TraceHistogramMax, 0.3s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 33 SDtfs, 25 SDslu, 91 SDs, 0 SdLazy, 44 SolverSat, 5 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.2s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=27occurred 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, 2 MinimizatonAttempts, 4 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.2s InterpolantComputationTime, 23 NumberOfCodeBlocks, 23 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 11 ConstructedInterpolants, 0 QuantifiedInterpolants, 171 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 2 InterpolantComputations, 2 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...