./Ultimate.py --spec /storage/repos/svcomp/c/properties/unreach-call.prp --file /storage/repos/svcomp/c/loops/array_false-unreach-call_true-termination.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability 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/loops/array_false-unreach-call_true-termination.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-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 ! call(__VERIFIER_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash c9c01a6cc6331754f7a6c99ec20becb53bf53c79 ............................................................................................................................................................................................................................................................................................................ Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE --- Real Ultimate output --- This is Ultimate 0.1.24-2e94e6a [2018-12-31 05:36:20,889 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-12-31 05:36:20,892 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-12-31 05:36:20,904 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-12-31 05:36:20,905 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-12-31 05:36:20,906 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-12-31 05:36:20,908 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-12-31 05:36:20,910 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-12-31 05:36:20,912 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-12-31 05:36:20,913 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-12-31 05:36:20,914 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-12-31 05:36:20,914 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-12-31 05:36:20,916 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-12-31 05:36:20,916 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-12-31 05:36:20,918 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-12-31 05:36:20,919 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-12-31 05:36:20,920 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-12-31 05:36:20,922 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-12-31 05:36:20,924 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-12-31 05:36:20,926 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-12-31 05:36:20,928 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-12-31 05:36:20,929 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-12-31 05:36:20,932 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-12-31 05:36:20,932 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-12-31 05:36:20,933 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-12-31 05:36:20,934 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-12-31 05:36:20,935 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-12-31 05:36:20,936 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-12-31 05:36:20,937 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-12-31 05:36:20,939 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-12-31 05:36:20,939 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-12-31 05:36:20,940 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-12-31 05:36:20,940 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-12-31 05:36:20,941 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-12-31 05:36:20,942 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-12-31 05:36:20,943 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-12-31 05:36:20,943 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2018-12-31 05:36:20,965 INFO L110 SettingsManager]: Loading preferences was successful [2018-12-31 05:36:20,965 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-12-31 05:36:20,966 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-12-31 05:36:20,971 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-12-31 05:36:20,971 INFO L133 SettingsManager]: * Use SBE=true [2018-12-31 05:36:20,971 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-12-31 05:36:20,971 INFO L133 SettingsManager]: * sizeof long=4 [2018-12-31 05:36:20,972 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-12-31 05:36:20,972 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-12-31 05:36:20,972 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-12-31 05:36:20,972 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-12-31 05:36:20,972 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-12-31 05:36:20,972 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-12-31 05:36:20,973 INFO L133 SettingsManager]: * sizeof long double=12 [2018-12-31 05:36:20,973 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-12-31 05:36:20,973 INFO L133 SettingsManager]: * Use constant arrays=true [2018-12-31 05:36:20,974 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-12-31 05:36:20,974 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-12-31 05:36:20,974 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-12-31 05:36:20,974 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-12-31 05:36:20,974 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-12-31 05:36:20,975 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-12-31 05:36:20,976 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-12-31 05:36:20,976 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-12-31 05:36:20,976 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-12-31 05:36:20,976 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-12-31 05:36:20,976 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-12-31 05:36:20,977 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-12-31 05:36:20,977 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 ! call(__VERIFIER_error())) ) 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 -> c9c01a6cc6331754f7a6c99ec20becb53bf53c79 [2018-12-31 05:36:21,029 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-12-31 05:36:21,043 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-12-31 05:36:21,047 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-12-31 05:36:21,048 INFO L271 PluginConnector]: Initializing CDTParser... [2018-12-31 05:36:21,048 INFO L276 PluginConnector]: CDTParser initialized [2018-12-31 05:36:21,049 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/svcomp/c/loops/array_false-unreach-call_true-termination.i [2018-12-31 05:36:21,103 INFO L221 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/bc365ab5e/4f074ab31b39493a89b2576842bf7167/FLAG917d5bb73 [2018-12-31 05:36:21,597 INFO L307 CDTParser]: Found 1 translation units. [2018-12-31 05:36:21,598 INFO L161 CDTParser]: Scanning /storage/repos/svcomp/c/loops/array_false-unreach-call_true-termination.i [2018-12-31 05:36:21,606 INFO L355 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/bc365ab5e/4f074ab31b39493a89b2576842bf7167/FLAG917d5bb73 [2018-12-31 05:36:21,950 INFO L363 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/bc365ab5e/4f074ab31b39493a89b2576842bf7167 [2018-12-31 05:36:21,954 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-12-31 05:36:21,956 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2018-12-31 05:36:21,958 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-12-31 05:36:21,958 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-12-31 05:36:21,966 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-12-31 05:36:21,967 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 31.12 05:36:21" (1/1) ... [2018-12-31 05:36:21,970 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1a078267 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.12 05:36:21, skipping insertion in model container [2018-12-31 05:36:21,970 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 31.12 05:36:21" (1/1) ... [2018-12-31 05:36:21,981 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-12-31 05:36:22,002 INFO L176 MainTranslator]: Built tables and reachable declarations [2018-12-31 05:36:22,257 INFO L204 PostProcessor]: Analyzing one entry point: main [2018-12-31 05:36:22,263 INFO L191 MainTranslator]: Completed pre-run [2018-12-31 05:36:22,295 INFO L204 PostProcessor]: Analyzing one entry point: main [2018-12-31 05:36:22,328 INFO L195 MainTranslator]: Completed translation [2018-12-31 05:36:22,328 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.12 05:36:22 WrapperNode [2018-12-31 05:36:22,328 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-12-31 05:36:22,329 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-12-31 05:36:22,330 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-12-31 05:36:22,331 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-12-31 05:36:22,341 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.12 05:36:22" (1/1) ... [2018-12-31 05:36:22,356 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.12 05:36:22" (1/1) ... [2018-12-31 05:36:22,389 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-12-31 05:36:22,389 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-12-31 05:36:22,389 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-12-31 05:36:22,389 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-12-31 05:36:22,403 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.12 05:36:22" (1/1) ... [2018-12-31 05:36:22,403 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.12 05:36:22" (1/1) ... [2018-12-31 05:36:22,405 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.12 05:36:22" (1/1) ... [2018-12-31 05:36:22,405 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.12 05:36:22" (1/1) ... [2018-12-31 05:36:22,415 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.12 05:36:22" (1/1) ... [2018-12-31 05:36:22,494 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.12 05:36:22" (1/1) ... [2018-12-31 05:36:22,495 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.12 05:36:22" (1/1) ... [2018-12-31 05:36:22,498 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-12-31 05:36:22,500 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-12-31 05:36:22,500 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-12-31 05:36:22,500 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-12-31 05:36:22,501 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.12 05:36:22" (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 [2018-12-31 05:36:22,571 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2018-12-31 05:36:22,572 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-12-31 05:36:22,572 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-12-31 05:36:22,572 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2018-12-31 05:36:22,572 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2018-12-31 05:36:22,572 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2018-12-31 05:36:22,930 INFO L275 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-12-31 05:36:22,930 INFO L280 CfgBuilder]: Removed 7 assue(true) statements. [2018-12-31 05:36:22,931 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.12 05:36:22 BoogieIcfgContainer [2018-12-31 05:36:22,931 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-12-31 05:36:22,932 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-12-31 05:36:22,932 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-12-31 05:36:22,936 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-12-31 05:36:22,936 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 31.12 05:36:21" (1/3) ... [2018-12-31 05:36:22,937 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@72283357 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 31.12 05:36:22, skipping insertion in model container [2018-12-31 05:36:22,937 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.12 05:36:22" (2/3) ... [2018-12-31 05:36:22,938 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@72283357 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 31.12 05:36:22, skipping insertion in model container [2018-12-31 05:36:22,938 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.12 05:36:22" (3/3) ... [2018-12-31 05:36:22,940 INFO L112 eAbstractionObserver]: Analyzing ICFG array_false-unreach-call_true-termination.i [2018-12-31 05:36:22,951 INFO L156 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-12-31 05:36:22,960 INFO L168 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-12-31 05:36:22,982 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-12-31 05:36:23,016 INFO L133 ementStrategyFactory]: Using default assertion order modulation [2018-12-31 05:36:23,017 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-12-31 05:36:23,017 INFO L383 AbstractCegarLoop]: Hoare is true [2018-12-31 05:36:23,017 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-12-31 05:36:23,018 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-12-31 05:36:23,018 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-12-31 05:36:23,019 INFO L387 AbstractCegarLoop]: Difference is false [2018-12-31 05:36:23,019 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-12-31 05:36:23,019 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-12-31 05:36:23,035 INFO L276 IsEmpty]: Start isEmpty. Operand 13 states. [2018-12-31 05:36:23,042 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2018-12-31 05:36:23,042 INFO L394 BasicCegarLoop]: Found error trace [2018-12-31 05:36:23,043 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2018-12-31 05:36:23,046 INFO L423 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-31 05:36:23,053 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2018-12-31 05:36:23,054 INFO L82 PathProgramCache]: Analyzing trace with hash 889937703, now seen corresponding path program 1 times [2018-12-31 05:36:23,056 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-12-31 05:36:23,057 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-12-31 05:36:23,108 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-31 05:36:23,108 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-31 05:36:23,108 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-31 05:36:23,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-31 05:36:23,203 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-31 05:36:23,205 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-12-31 05:36:23,206 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-12-31 05:36:23,209 INFO L459 AbstractCegarLoop]: Interpolant automaton has 2 states [2018-12-31 05:36:23,222 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2018-12-31 05:36:23,223 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-12-31 05:36:23,226 INFO L87 Difference]: Start difference. First operand 13 states. Second operand 2 states. [2018-12-31 05:36:23,241 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-31 05:36:23,241 INFO L93 Difference]: Finished difference Result 21 states and 24 transitions. [2018-12-31 05:36:23,242 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2018-12-31 05:36:23,243 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 6 [2018-12-31 05:36:23,243 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-31 05:36:23,252 INFO L225 Difference]: With dead ends: 21 [2018-12-31 05:36:23,253 INFO L226 Difference]: Without dead ends: 9 [2018-12-31 05:36:23,256 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-12-31 05:36:23,274 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9 states. [2018-12-31 05:36:23,288 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9 to 9. [2018-12-31 05:36:23,290 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2018-12-31 05:36:23,291 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 10 transitions. [2018-12-31 05:36:23,292 INFO L78 Accepts]: Start accepts. Automaton has 9 states and 10 transitions. Word has length 6 [2018-12-31 05:36:23,293 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-31 05:36:23,293 INFO L480 AbstractCegarLoop]: Abstraction has 9 states and 10 transitions. [2018-12-31 05:36:23,293 INFO L481 AbstractCegarLoop]: Interpolant automaton has 2 states. [2018-12-31 05:36:23,293 INFO L276 IsEmpty]: Start isEmpty. Operand 9 states and 10 transitions. [2018-12-31 05:36:23,294 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2018-12-31 05:36:23,294 INFO L394 BasicCegarLoop]: Found error trace [2018-12-31 05:36:23,294 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2018-12-31 05:36:23,294 INFO L423 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-31 05:36:23,295 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2018-12-31 05:36:23,295 INFO L82 PathProgramCache]: Analyzing trace with hash 889610002, now seen corresponding path program 1 times [2018-12-31 05:36:23,295 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-12-31 05:36:23,295 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-12-31 05:36:23,296 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-31 05:36:23,296 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-31 05:36:23,296 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-31 05:36:23,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-31 05:36:23,486 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-31 05:36:23,486 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-12-31 05:36:23,489 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-12-31 05:36:23,490 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-12-31 05:36:23,491 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-12-31 05:36:23,492 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-12-31 05:36:23,493 INFO L87 Difference]: Start difference. First operand 9 states and 10 transitions. Second operand 3 states. [2018-12-31 05:36:23,551 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-31 05:36:23,552 INFO L93 Difference]: Finished difference Result 16 states and 18 transitions. [2018-12-31 05:36:23,552 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-12-31 05:36:23,553 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 6 [2018-12-31 05:36:23,553 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-31 05:36:23,553 INFO L225 Difference]: With dead ends: 16 [2018-12-31 05:36:23,553 INFO L226 Difference]: Without dead ends: 12 [2018-12-31 05:36:23,554 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-12-31 05:36:23,554 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12 states. [2018-12-31 05:36:23,557 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12 to 10. [2018-12-31 05:36:23,557 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2018-12-31 05:36:23,557 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 11 transitions. [2018-12-31 05:36:23,558 INFO L78 Accepts]: Start accepts. Automaton has 10 states and 11 transitions. Word has length 6 [2018-12-31 05:36:23,558 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-31 05:36:23,558 INFO L480 AbstractCegarLoop]: Abstraction has 10 states and 11 transitions. [2018-12-31 05:36:23,558 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-12-31 05:36:23,558 INFO L276 IsEmpty]: Start isEmpty. Operand 10 states and 11 transitions. [2018-12-31 05:36:23,559 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2018-12-31 05:36:23,559 INFO L394 BasicCegarLoop]: Found error trace [2018-12-31 05:36:23,559 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-31 05:36:23,559 INFO L423 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-31 05:36:23,559 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2018-12-31 05:36:23,560 INFO L82 PathProgramCache]: Analyzing trace with hash -332619814, now seen corresponding path program 1 times [2018-12-31 05:36:23,560 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-12-31 05:36:23,560 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-12-31 05:36:23,561 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-31 05:36:23,561 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-31 05:36:23,561 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-31 05:36:23,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-12-31 05:36:23,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-12-31 05:36:23,665 INFO L469 BasicCegarLoop]: Counterexample might be feasible [2018-12-31 05:36:23,688 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 31.12 05:36:23 BoogieIcfgContainer [2018-12-31 05:36:23,689 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-12-31 05:36:23,689 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2018-12-31 05:36:23,689 INFO L271 PluginConnector]: Initializing Witness Printer... [2018-12-31 05:36:23,690 INFO L276 PluginConnector]: Witness Printer initialized [2018-12-31 05:36:23,690 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.12 05:36:22" (3/4) ... [2018-12-31 05:36:23,693 INFO L138 WitnessPrinter]: Generating witness for reachability counterexample [2018-12-31 05:36:23,742 INFO L145 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2018-12-31 05:36:23,742 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2018-12-31 05:36:23,743 INFO L168 Benchmark]: Toolchain (without parser) took 1788.61 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 101.2 MB). Free memory was 951.3 MB in the beginning and 1.0 GB in the end (delta: -91.1 MB). Peak memory consumption was 10.1 MB. Max. memory is 11.5 GB. [2018-12-31 05:36:23,745 INFO L168 Benchmark]: CDTParser took 0.15 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. [2018-12-31 05:36:23,746 INFO L168 Benchmark]: CACSL2BoogieTranslator took 371.27 ms. Allocated memory is still 1.0 GB. Free memory was 951.3 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. [2018-12-31 05:36:23,747 INFO L168 Benchmark]: Boogie Procedure Inliner took 59.42 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. [2018-12-31 05:36:23,747 INFO L168 Benchmark]: Boogie Preprocessor took 109.96 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 101.2 MB). Free memory was 940.6 MB in the beginning and 1.1 GB in the end (delta: -155.8 MB). Peak memory consumption was 18.8 MB. Max. memory is 11.5 GB. [2018-12-31 05:36:23,749 INFO L168 Benchmark]: RCFGBuilder took 431.53 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: 20.5 MB). Peak memory consumption was 20.5 MB. Max. memory is 11.5 GB. [2018-12-31 05:36:23,750 INFO L168 Benchmark]: TraceAbstraction took 756.72 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.0 GB in the end (delta: 33.6 MB). Peak memory consumption was 33.6 MB. Max. memory is 11.5 GB. [2018-12-31 05:36:23,751 INFO L168 Benchmark]: Witness Printer took 52.88 ms. Allocated memory is still 1.1 GB. Free memory is still 1.0 GB. There was no memory consumed. Max. memory is 11.5 GB. [2018-12-31 05:36:23,756 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.15 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 371.27 ms. Allocated memory is still 1.0 GB. Free memory was 951.3 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 59.42 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 109.96 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 101.2 MB). Free memory was 940.6 MB in the beginning and 1.1 GB in the end (delta: -155.8 MB). Peak memory consumption was 18.8 MB. Max. memory is 11.5 GB. * RCFGBuilder took 431.53 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: 20.5 MB). Peak memory consumption was 20.5 MB. Max. memory is 11.5 GB. * TraceAbstraction took 756.72 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.0 GB in the end (delta: 33.6 MB). Peak memory consumption was 33.6 MB. Max. memory is 11.5 GB. * Witness Printer took 52.88 ms. Allocated memory is still 1.1 GB. Free memory is still 1.0 GB. There was no memory consumed. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 5]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L13] unsigned int SIZE=1; [L14] unsigned int j,k; [L15] int array[SIZE], menor; [L17] menor = __VERIFIER_nondet_int() [L19] j=0 [L19] COND TRUE j