./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 0ed9222f 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 0.1.24-0ed9222-m [2019-01-14 16:59:00,931 INFO L170 SettingsManager]: Resetting all preferences to default values... [2019-01-14 16:59:00,933 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2019-01-14 16:59:00,945 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-01-14 16:59:00,945 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-01-14 16:59:00,947 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-01-14 16:59:00,948 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-01-14 16:59:00,950 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2019-01-14 16:59:00,952 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-01-14 16:59:00,953 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-01-14 16:59:00,954 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-01-14 16:59:00,955 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-01-14 16:59:00,956 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-01-14 16:59:00,957 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-01-14 16:59:00,959 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-01-14 16:59:00,960 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-01-14 16:59:00,961 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-01-14 16:59:00,962 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-01-14 16:59:00,965 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2019-01-14 16:59:00,967 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-01-14 16:59:00,968 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-01-14 16:59:00,970 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-01-14 16:59:00,973 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-01-14 16:59:00,973 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-01-14 16:59:00,973 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-01-14 16:59:00,974 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-01-14 16:59:00,976 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-01-14 16:59:00,977 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-01-14 16:59:00,978 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2019-01-14 16:59:00,979 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-01-14 16:59:00,979 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2019-01-14 16:59:00,980 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-01-14 16:59:00,980 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-01-14 16:59:00,981 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2019-01-14 16:59:00,982 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2019-01-14 16:59:00,982 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2019-01-14 16:59:00,983 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2019-01-14 16:59:01,010 INFO L110 SettingsManager]: Loading preferences was successful [2019-01-14 16:59:01,012 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2019-01-14 16:59:01,013 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-01-14 16:59:01,013 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2019-01-14 16:59:01,013 INFO L133 SettingsManager]: * Use SBE=true [2019-01-14 16:59:01,014 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-01-14 16:59:01,015 INFO L133 SettingsManager]: * sizeof long=4 [2019-01-14 16:59:01,015 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2019-01-14 16:59:01,015 INFO L133 SettingsManager]: * sizeof POINTER=4 [2019-01-14 16:59:01,015 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2019-01-14 16:59:01,016 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-01-14 16:59:01,016 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-01-14 16:59:01,016 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-01-14 16:59:01,016 INFO L133 SettingsManager]: * sizeof long double=12 [2019-01-14 16:59:01,016 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2019-01-14 16:59:01,016 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-01-14 16:59:01,017 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-01-14 16:59:01,020 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-01-14 16:59:01,020 INFO L133 SettingsManager]: * To the following directory=./dump/ [2019-01-14 16:59:01,020 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2019-01-14 16:59:01,020 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-01-14 16:59:01,020 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-01-14 16:59:01,021 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-01-14 16:59:01,021 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-01-14 16:59:01,021 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2019-01-14 16:59:01,021 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-01-14 16:59:01,021 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-01-14 16:59:01,021 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 [2019-01-14 16:59:01,069 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-01-14 16:59:01,088 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-01-14 16:59:01,095 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-01-14 16:59:01,096 INFO L271 PluginConnector]: Initializing CDTParser... [2019-01-14 16:59:01,097 INFO L276 PluginConnector]: CDTParser initialized [2019-01-14 16:59:01,098 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/svcomp/c/loops/array_false-unreach-call_true-termination.i [2019-01-14 16:59:01,160 INFO L221 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ed4cefc32/d866c24203604a6cad9764f816f8af72/FLAGf4e28b3b9 [2019-01-14 16:59:01,589 INFO L307 CDTParser]: Found 1 translation units. [2019-01-14 16:59:01,589 INFO L161 CDTParser]: Scanning /storage/repos/svcomp/c/loops/array_false-unreach-call_true-termination.i [2019-01-14 16:59:01,596 INFO L355 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ed4cefc32/d866c24203604a6cad9764f816f8af72/FLAGf4e28b3b9 [2019-01-14 16:59:01,954 INFO L363 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ed4cefc32/d866c24203604a6cad9764f816f8af72 [2019-01-14 16:59:01,957 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-01-14 16:59:01,958 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2019-01-14 16:59:01,959 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-01-14 16:59:01,960 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-01-14 16:59:01,964 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2019-01-14 16:59:01,965 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.01 04:59:01" (1/1) ... [2019-01-14 16:59:01,969 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@16b00c64 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.01 04:59:01, skipping insertion in model container [2019-01-14 16:59:01,969 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.01 04:59:01" (1/1) ... [2019-01-14 16:59:01,979 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2019-01-14 16:59:02,000 INFO L176 MainTranslator]: Built tables and reachable declarations [2019-01-14 16:59:02,226 INFO L208 PostProcessor]: Analyzing one entry point: main [2019-01-14 16:59:02,231 INFO L191 MainTranslator]: Completed pre-run [2019-01-14 16:59:02,256 INFO L208 PostProcessor]: Analyzing one entry point: main [2019-01-14 16:59:02,279 INFO L195 MainTranslator]: Completed translation [2019-01-14 16:59:02,279 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.01 04:59:02 WrapperNode [2019-01-14 16:59:02,280 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-01-14 16:59:02,280 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-01-14 16:59:02,281 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-01-14 16:59:02,281 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2019-01-14 16:59:02,291 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.01 04:59:02" (1/1) ... [2019-01-14 16:59:02,300 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.01 04:59:02" (1/1) ... [2019-01-14 16:59:02,323 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-01-14 16:59:02,324 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-01-14 16:59:02,324 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-01-14 16:59:02,324 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2019-01-14 16:59:02,335 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.01 04:59:02" (1/1) ... [2019-01-14 16:59:02,335 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.01 04:59:02" (1/1) ... [2019-01-14 16:59:02,337 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.01 04:59:02" (1/1) ... [2019-01-14 16:59:02,338 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.01 04:59:02" (1/1) ... [2019-01-14 16:59:02,344 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.01 04:59:02" (1/1) ... [2019-01-14 16:59:02,349 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.01 04:59:02" (1/1) ... [2019-01-14 16:59:02,351 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.01 04:59:02" (1/1) ... [2019-01-14 16:59:02,353 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-01-14 16:59:02,354 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-01-14 16:59:02,354 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-01-14 16:59:02,354 INFO L276 PluginConnector]: RCFGBuilder initialized [2019-01-14 16:59:02,355 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.01 04:59:02" (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 [2019-01-14 16:59:02,475 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-01-14 16:59:02,475 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-01-14 16:59:02,475 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-01-14 16:59:02,476 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-01-14 16:59:02,476 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-01-14 16:59:02,476 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-01-14 16:59:02,816 INFO L281 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-01-14 16:59:02,817 INFO L286 CfgBuilder]: Removed 7 assue(true) statements. [2019-01-14 16:59:02,818 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.01 04:59:02 BoogieIcfgContainer [2019-01-14 16:59:02,819 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-01-14 16:59:02,820 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-01-14 16:59:02,820 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-01-14 16:59:02,824 INFO L276 PluginConnector]: TraceAbstraction initialized [2019-01-14 16:59:02,825 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.01 04:59:01" (1/3) ... [2019-01-14 16:59:02,825 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@244a4790 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.01 04:59:02, skipping insertion in model container [2019-01-14 16:59:02,826 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.01 04:59:02" (2/3) ... [2019-01-14 16:59:02,826 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@244a4790 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.01 04:59:02, skipping insertion in model container [2019-01-14 16:59:02,826 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.01 04:59:02" (3/3) ... [2019-01-14 16:59:02,829 INFO L112 eAbstractionObserver]: Analyzing ICFG array_false-unreach-call_true-termination.i [2019-01-14 16:59:02,841 INFO L156 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-01-14 16:59:02,849 INFO L168 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-01-14 16:59:02,867 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-01-14 16:59:02,897 INFO L133 ementStrategyFactory]: Using default assertion order modulation [2019-01-14 16:59:02,897 INFO L382 AbstractCegarLoop]: Interprodecural is true [2019-01-14 16:59:02,898 INFO L383 AbstractCegarLoop]: Hoare is true [2019-01-14 16:59:02,898 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-01-14 16:59:02,898 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-01-14 16:59:02,898 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-01-14 16:59:02,898 INFO L387 AbstractCegarLoop]: Difference is false [2019-01-14 16:59:02,898 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-01-14 16:59:02,899 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-01-14 16:59:02,912 INFO L276 IsEmpty]: Start isEmpty. Operand 13 states. [2019-01-14 16:59:02,918 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2019-01-14 16:59:02,919 INFO L394 BasicCegarLoop]: Found error trace [2019-01-14 16:59:02,920 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2019-01-14 16:59:02,922 INFO L423 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-01-14 16:59:02,927 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-01-14 16:59:02,928 INFO L82 PathProgramCache]: Analyzing trace with hash 889937703, now seen corresponding path program 1 times [2019-01-14 16:59:02,929 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-01-14 16:59:02,930 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-01-14 16:59:02,976 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-01-14 16:59:02,976 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-01-14 16:59:02,976 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-01-14 16:59:03,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-01-14 16:59:03,055 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-01-14 16:59:03,058 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-01-14 16:59:03,058 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-01-14 16:59:03,062 INFO L459 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-01-14 16:59:03,076 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-01-14 16:59:03,077 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-01-14 16:59:03,079 INFO L87 Difference]: Start difference. First operand 13 states. Second operand 2 states. [2019-01-14 16:59:03,092 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-01-14 16:59:03,093 INFO L93 Difference]: Finished difference Result 21 states and 24 transitions. [2019-01-14 16:59:03,093 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-01-14 16:59:03,094 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 6 [2019-01-14 16:59:03,094 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-01-14 16:59:03,104 INFO L225 Difference]: With dead ends: 21 [2019-01-14 16:59:03,104 INFO L226 Difference]: Without dead ends: 9 [2019-01-14 16:59:03,108 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 [2019-01-14 16:59:03,127 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9 states. [2019-01-14 16:59:03,142 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9 to 9. [2019-01-14 16:59:03,143 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2019-01-14 16:59:03,144 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 10 transitions. [2019-01-14 16:59:03,145 INFO L78 Accepts]: Start accepts. Automaton has 9 states and 10 transitions. Word has length 6 [2019-01-14 16:59:03,146 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-01-14 16:59:03,146 INFO L480 AbstractCegarLoop]: Abstraction has 9 states and 10 transitions. [2019-01-14 16:59:03,146 INFO L481 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-01-14 16:59:03,146 INFO L276 IsEmpty]: Start isEmpty. Operand 9 states and 10 transitions. [2019-01-14 16:59:03,147 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2019-01-14 16:59:03,148 INFO L394 BasicCegarLoop]: Found error trace [2019-01-14 16:59:03,148 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2019-01-14 16:59:03,148 INFO L423 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-01-14 16:59:03,149 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-01-14 16:59:03,149 INFO L82 PathProgramCache]: Analyzing trace with hash 889610002, now seen corresponding path program 1 times [2019-01-14 16:59:03,150 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-01-14 16:59:03,150 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-01-14 16:59:03,152 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-01-14 16:59:03,152 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-01-14 16:59:03,152 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-01-14 16:59:03,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-01-14 16:59:03,301 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-01-14 16:59:03,302 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-01-14 16:59:03,302 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-01-14 16:59:03,305 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-01-14 16:59:03,305 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-01-14 16:59:03,305 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-01-14 16:59:03,306 INFO L87 Difference]: Start difference. First operand 9 states and 10 transitions. Second operand 3 states. [2019-01-14 16:59:03,360 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-01-14 16:59:03,360 INFO L93 Difference]: Finished difference Result 16 states and 18 transitions. [2019-01-14 16:59:03,361 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-01-14 16:59:03,362 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 6 [2019-01-14 16:59:03,362 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-01-14 16:59:03,362 INFO L225 Difference]: With dead ends: 16 [2019-01-14 16:59:03,362 INFO L226 Difference]: Without dead ends: 12 [2019-01-14 16:59:03,363 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 [2019-01-14 16:59:03,365 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12 states. [2019-01-14 16:59:03,367 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12 to 10. [2019-01-14 16:59:03,368 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2019-01-14 16:59:03,368 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 11 transitions. [2019-01-14 16:59:03,368 INFO L78 Accepts]: Start accepts. Automaton has 10 states and 11 transitions. Word has length 6 [2019-01-14 16:59:03,369 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-01-14 16:59:03,369 INFO L480 AbstractCegarLoop]: Abstraction has 10 states and 11 transitions. [2019-01-14 16:59:03,369 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-01-14 16:59:03,369 INFO L276 IsEmpty]: Start isEmpty. Operand 10 states and 11 transitions. [2019-01-14 16:59:03,369 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2019-01-14 16:59:03,370 INFO L394 BasicCegarLoop]: Found error trace [2019-01-14 16:59:03,371 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-01-14 16:59:03,371 INFO L423 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-01-14 16:59:03,371 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-01-14 16:59:03,372 INFO L82 PathProgramCache]: Analyzing trace with hash -332619814, now seen corresponding path program 1 times [2019-01-14 16:59:03,372 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-01-14 16:59:03,372 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-01-14 16:59:03,374 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-01-14 16:59:03,374 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-01-14 16:59:03,374 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-01-14 16:59:03,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-01-14 16:59:03,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-01-14 16:59:03,472 INFO L469 BasicCegarLoop]: Counterexample might be feasible [2019-01-14 16:59:03,501 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 14.01 04:59:03 BoogieIcfgContainer [2019-01-14 16:59:03,502 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-01-14 16:59:03,502 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-01-14 16:59:03,502 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-01-14 16:59:03,502 INFO L276 PluginConnector]: Witness Printer initialized [2019-01-14 16:59:03,504 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.01 04:59:02" (3/4) ... [2019-01-14 16:59:03,507 INFO L138 WitnessPrinter]: Generating witness for reachability counterexample [2019-01-14 16:59:03,563 INFO L145 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2019-01-14 16:59:03,564 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-01-14 16:59:03,565 INFO L168 Benchmark]: Toolchain (without parser) took 1607.05 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 118.0 MB). Free memory was 952.7 MB in the beginning and 1.1 GB in the end (delta: -106.4 MB). Peak memory consumption was 11.6 MB. Max. memory is 11.5 GB. [2019-01-14 16:59:03,568 INFO L168 Benchmark]: CDTParser took 0.18 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. [2019-01-14 16:59:03,568 INFO L168 Benchmark]: CACSL2BoogieTranslator took 320.68 ms. Allocated memory is still 1.0 GB. Free memory was 952.7 MB in the beginning and 941.9 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. [2019-01-14 16:59:03,570 INFO L168 Benchmark]: Boogie Procedure Inliner took 43.22 ms. Allocated memory is still 1.0 GB. Free memory is still 941.9 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-01-14 16:59:03,570 INFO L168 Benchmark]: Boogie Preprocessor took 29.39 ms. Allocated memory is still 1.0 GB. Free memory was 941.9 MB in the beginning and 936.6 MB in the end (delta: 5.4 MB). Peak memory consumption was 5.4 MB. Max. memory is 11.5 GB. [2019-01-14 16:59:03,571 INFO L168 Benchmark]: RCFGBuilder took 465.70 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 118.0 MB). Free memory was 936.6 MB in the beginning and 1.1 GB in the end (delta: -156.0 MB). Peak memory consumption was 13.7 MB. Max. memory is 11.5 GB. [2019-01-14 16:59:03,572 INFO L168 Benchmark]: TraceAbstraction took 681.51 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: 33.6 MB). Peak memory consumption was 33.6 MB. Max. memory is 11.5 GB. [2019-01-14 16:59:03,573 INFO L168 Benchmark]: Witness Printer took 61.68 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. [2019-01-14 16:59:03,579 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.18 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 320.68 ms. Allocated memory is still 1.0 GB. Free memory was 952.7 MB in the beginning and 941.9 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 43.22 ms. Allocated memory is still 1.0 GB. Free memory is still 941.9 MB. There was no memory consumed. Max. memory is 11.5 GB. * Boogie Preprocessor took 29.39 ms. Allocated memory is still 1.0 GB. Free memory was 941.9 MB in the beginning and 936.6 MB in the end (delta: 5.4 MB). Peak memory consumption was 5.4 MB. Max. memory is 11.5 GB. * RCFGBuilder took 465.70 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 118.0 MB). Free memory was 936.6 MB in the beginning and 1.1 GB in the end (delta: -156.0 MB). Peak memory consumption was 13.7 MB. Max. memory is 11.5 GB. * TraceAbstraction took 681.51 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: 33.6 MB). Peak memory consumption was 33.6 MB. Max. memory is 11.5 GB. * Witness Printer took 61.68 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: 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