./Ultimate.py --spec /storage/repos/svcomp/c/properties/unreach-call.prp --file /storage/repos/svcomp/c/loops/matrix_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/matrix_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 a06687718ac0cd281e66000f698ec14d3c3893e6 ............................................................................................................................................................................................................................................................................................................................................ 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 05:37:28,305 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-12-31 05:37:28,307 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-12-31 05:37:28,320 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-12-31 05:37:28,320 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-12-31 05:37:28,321 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-12-31 05:37:28,323 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-12-31 05:37:28,325 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-12-31 05:37:28,328 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-12-31 05:37:28,332 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-12-31 05:37:28,333 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-12-31 05:37:28,334 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-12-31 05:37:28,335 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-12-31 05:37:28,338 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-12-31 05:37:28,342 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-12-31 05:37:28,344 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-12-31 05:37:28,345 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-12-31 05:37:28,350 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-12-31 05:37:28,352 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-12-31 05:37:28,354 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-12-31 05:37:28,355 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-12-31 05:37:28,357 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-12-31 05:37:28,359 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-12-31 05:37:28,360 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-12-31 05:37:28,360 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-12-31 05:37:28,361 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-12-31 05:37:28,362 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-12-31 05:37:28,363 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-12-31 05:37:28,364 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-12-31 05:37:28,365 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-12-31 05:37:28,365 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-12-31 05:37:28,367 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-12-31 05:37:28,367 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-12-31 05:37:28,367 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-12-31 05:37:28,368 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-12-31 05:37:28,369 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-12-31 05:37:28,370 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2018-12-31 05:37:28,385 INFO L110 SettingsManager]: Loading preferences was successful [2018-12-31 05:37:28,386 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-12-31 05:37:28,387 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-12-31 05:37:28,387 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-12-31 05:37:28,387 INFO L133 SettingsManager]: * Use SBE=true [2018-12-31 05:37:28,388 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-12-31 05:37:28,388 INFO L133 SettingsManager]: * sizeof long=4 [2018-12-31 05:37:28,389 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-12-31 05:37:28,389 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-12-31 05:37:28,389 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-12-31 05:37:28,389 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-12-31 05:37:28,389 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-12-31 05:37:28,389 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-12-31 05:37:28,390 INFO L133 SettingsManager]: * sizeof long double=12 [2018-12-31 05:37:28,390 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-12-31 05:37:28,390 INFO L133 SettingsManager]: * Use constant arrays=true [2018-12-31 05:37:28,390 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-12-31 05:37:28,390 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-12-31 05:37:28,393 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-12-31 05:37:28,393 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-12-31 05:37:28,394 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-12-31 05:37:28,394 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-12-31 05:37:28,394 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-12-31 05:37:28,394 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-12-31 05:37:28,394 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-12-31 05:37:28,394 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-12-31 05:37:28,395 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-12-31 05:37:28,395 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-12-31 05:37:28,395 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 -> a06687718ac0cd281e66000f698ec14d3c3893e6 [2018-12-31 05:37:28,462 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-12-31 05:37:28,481 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-12-31 05:37:28,485 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-12-31 05:37:28,487 INFO L271 PluginConnector]: Initializing CDTParser... [2018-12-31 05:37:28,487 INFO L276 PluginConnector]: CDTParser initialized [2018-12-31 05:37:28,488 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/svcomp/c/loops/matrix_false-unreach-call_true-termination.i [2018-12-31 05:37:28,556 INFO L221 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7fc7a388d/056ef2fb21624612a8d07232102b8cf4/FLAGf90ff35e3 [2018-12-31 05:37:29,034 INFO L307 CDTParser]: Found 1 translation units. [2018-12-31 05:37:29,035 INFO L161 CDTParser]: Scanning /storage/repos/svcomp/c/loops/matrix_false-unreach-call_true-termination.i [2018-12-31 05:37:29,040 INFO L355 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7fc7a388d/056ef2fb21624612a8d07232102b8cf4/FLAGf90ff35e3 [2018-12-31 05:37:29,382 INFO L363 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7fc7a388d/056ef2fb21624612a8d07232102b8cf4 [2018-12-31 05:37:29,388 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-12-31 05:37:29,390 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2018-12-31 05:37:29,391 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-12-31 05:37:29,391 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-12-31 05:37:29,396 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-12-31 05:37:29,397 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 31.12 05:37:29" (1/1) ... [2018-12-31 05:37:29,401 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7131f748 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.12 05:37:29, skipping insertion in model container [2018-12-31 05:37:29,401 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 31.12 05:37:29" (1/1) ... [2018-12-31 05:37:29,410 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-12-31 05:37:29,433 INFO L176 MainTranslator]: Built tables and reachable declarations [2018-12-31 05:37:29,688 INFO L204 PostProcessor]: Analyzing one entry point: main [2018-12-31 05:37:29,693 INFO L191 MainTranslator]: Completed pre-run [2018-12-31 05:37:29,723 INFO L204 PostProcessor]: Analyzing one entry point: main [2018-12-31 05:37:29,753 INFO L195 MainTranslator]: Completed translation [2018-12-31 05:37:29,755 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.12 05:37:29 WrapperNode [2018-12-31 05:37:29,755 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-12-31 05:37:29,756 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-12-31 05:37:29,757 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-12-31 05:37:29,757 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-12-31 05:37:29,768 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.12 05:37:29" (1/1) ... [2018-12-31 05:37:29,783 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.12 05:37:29" (1/1) ... [2018-12-31 05:37:29,822 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-12-31 05:37:29,824 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-12-31 05:37:29,825 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-12-31 05:37:29,825 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-12-31 05:37:29,837 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.12 05:37:29" (1/1) ... [2018-12-31 05:37:29,838 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.12 05:37:29" (1/1) ... [2018-12-31 05:37:29,905 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.12 05:37:29" (1/1) ... [2018-12-31 05:37:29,908 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.12 05:37:29" (1/1) ... [2018-12-31 05:37:29,919 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.12 05:37:29" (1/1) ... [2018-12-31 05:37:29,934 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.12 05:37:29" (1/1) ... [2018-12-31 05:37:29,937 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.12 05:37:29" (1/1) ... [2018-12-31 05:37:29,944 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-12-31 05:37:29,947 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-12-31 05:37:29,947 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-12-31 05:37:29,947 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-12-31 05:37:29,948 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.12 05:37:29" (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 05:37:30,018 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2018-12-31 05:37:30,018 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-12-31 05:37:30,018 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-12-31 05:37:30,019 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2018-12-31 05:37:30,019 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2018-12-31 05:37:30,019 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2018-12-31 05:37:30,352 INFO L275 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-12-31 05:37:30,353 INFO L280 CfgBuilder]: Removed 10 assue(true) statements. [2018-12-31 05:37:30,353 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.12 05:37:30 BoogieIcfgContainer [2018-12-31 05:37:30,353 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-12-31 05:37:30,354 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-12-31 05:37:30,355 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-12-31 05:37:30,358 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-12-31 05:37:30,358 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 31.12 05:37:29" (1/3) ... [2018-12-31 05:37:30,359 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@60a3e44e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 31.12 05:37:30, skipping insertion in model container [2018-12-31 05:37:30,360 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.12 05:37:29" (2/3) ... [2018-12-31 05:37:30,360 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@60a3e44e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 31.12 05:37:30, skipping insertion in model container [2018-12-31 05:37:30,360 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.12 05:37:30" (3/3) ... [2018-12-31 05:37:30,362 INFO L112 eAbstractionObserver]: Analyzing ICFG matrix_false-unreach-call_true-termination.i [2018-12-31 05:37:30,373 INFO L156 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-12-31 05:37:30,383 INFO L168 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-12-31 05:37:30,402 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-12-31 05:37:30,435 INFO L133 ementStrategyFactory]: Using default assertion order modulation [2018-12-31 05:37:30,436 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-12-31 05:37:30,436 INFO L383 AbstractCegarLoop]: Hoare is true [2018-12-31 05:37:30,436 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-12-31 05:37:30,437 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-12-31 05:37:30,437 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-12-31 05:37:30,437 INFO L387 AbstractCegarLoop]: Difference is false [2018-12-31 05:37:30,437 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-12-31 05:37:30,438 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-12-31 05:37:30,453 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states. [2018-12-31 05:37:30,460 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2018-12-31 05:37:30,461 INFO L394 BasicCegarLoop]: Found error trace [2018-12-31 05:37:30,462 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2018-12-31 05:37:30,464 INFO L423 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-31 05:37:30,469 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2018-12-31 05:37:30,469 INFO L82 PathProgramCache]: Analyzing trace with hash 228332486, now seen corresponding path program 1 times [2018-12-31 05:37:30,471 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-12-31 05:37:30,472 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-12-31 05:37:30,524 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-31 05:37:30,524 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-31 05:37:30,524 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-31 05:37:30,565 ERROR L235 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2018-12-31 05:37:30,565 INFO L258 seRefinementStrategy]: Advancing trace checker [2018-12-31 05:37:30,565 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2018-12-31 05:37:30,592 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-31 05:37:30,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-31 05:37:30,702 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-31 05:37:30,847 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 05:37:30,870 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-12-31 05:37:30,870 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-12-31 05:37:30,873 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-12-31 05:37:30,885 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-12-31 05:37:30,886 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2018-12-31 05:37:30,888 INFO L87 Difference]: Start difference. First operand 20 states. Second operand 5 states. [2018-12-31 05:37:31,143 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-31 05:37:31,144 INFO L93 Difference]: Finished difference Result 57 states and 86 transitions. [2018-12-31 05:37:31,144 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-12-31 05:37:31,146 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 8 [2018-12-31 05:37:31,147 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-31 05:37:31,161 INFO L225 Difference]: With dead ends: 57 [2018-12-31 05:37:31,162 INFO L226 Difference]: Without dead ends: 29 [2018-12-31 05:37:31,166 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2018-12-31 05:37:31,188 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2018-12-31 05:37:31,208 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 17. [2018-12-31 05:37:31,211 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2018-12-31 05:37:31,212 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 21 transitions. [2018-12-31 05:37:31,213 INFO L78 Accepts]: Start accepts. Automaton has 17 states and 21 transitions. Word has length 8 [2018-12-31 05:37:31,214 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-31 05:37:31,214 INFO L480 AbstractCegarLoop]: Abstraction has 17 states and 21 transitions. [2018-12-31 05:37:31,215 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-12-31 05:37:31,215 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states and 21 transitions. [2018-12-31 05:37:31,215 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2018-12-31 05:37:31,215 INFO L394 BasicCegarLoop]: Found error trace [2018-12-31 05:37:31,216 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-31 05:37:31,216 INFO L423 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-31 05:37:31,216 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2018-12-31 05:37:31,216 INFO L82 PathProgramCache]: Analyzing trace with hash 1185124407, now seen corresponding path program 1 times [2018-12-31 05:37:31,217 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-12-31 05:37:31,219 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-12-31 05:37:31,222 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-31 05:37:31,223 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-31 05:37:31,223 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-31 05:37:31,235 ERROR L235 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2018-12-31 05:37:31,235 INFO L258 seRefinementStrategy]: Advancing trace checker [2018-12-31 05:37:31,236 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2018-12-31 05:37:31,255 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-31 05:37:31,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-31 05:37:31,288 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-31 05:37:31,442 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-31 05:37:31,464 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-12-31 05:37:31,464 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-12-31 05:37:31,466 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-12-31 05:37:31,466 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-12-31 05:37:31,466 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2018-12-31 05:37:31,467 INFO L87 Difference]: Start difference. First operand 17 states and 21 transitions. Second operand 5 states. [2018-12-31 05:37:31,598 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-31 05:37:31,598 INFO L93 Difference]: Finished difference Result 47 states and 61 transitions. [2018-12-31 05:37:31,600 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-12-31 05:37:31,600 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 11 [2018-12-31 05:37:31,600 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-31 05:37:31,601 INFO L225 Difference]: With dead ends: 47 [2018-12-31 05:37:31,601 INFO L226 Difference]: Without dead ends: 26 [2018-12-31 05:37:31,603 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2018-12-31 05:37:31,604 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states. [2018-12-31 05:37:31,607 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 19. [2018-12-31 05:37:31,608 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2018-12-31 05:37:31,608 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 23 transitions. [2018-12-31 05:37:31,609 INFO L78 Accepts]: Start accepts. Automaton has 19 states and 23 transitions. Word has length 11 [2018-12-31 05:37:31,609 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-31 05:37:31,610 INFO L480 AbstractCegarLoop]: Abstraction has 19 states and 23 transitions. [2018-12-31 05:37:31,610 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-12-31 05:37:31,610 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 23 transitions. [2018-12-31 05:37:31,610 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2018-12-31 05:37:31,611 INFO L394 BasicCegarLoop]: Found error trace [2018-12-31 05:37:31,611 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-31 05:37:31,611 INFO L423 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-31 05:37:31,611 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2018-12-31 05:37:31,612 INFO L82 PathProgramCache]: Analyzing trace with hash 206458815, now seen corresponding path program 1 times [2018-12-31 05:37:31,613 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-12-31 05:37:31,613 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-12-31 05:37:31,614 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-31 05:37:31,614 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-31 05:37:31,615 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-31 05:37:31,620 ERROR L235 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2018-12-31 05:37:31,620 INFO L258 seRefinementStrategy]: Advancing trace checker [2018-12-31 05:37:31,621 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2018-12-31 05:37:31,641 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-31 05:37:31,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-12-31 05:37:31,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-12-31 05:37:31,752 INFO L469 BasicCegarLoop]: Counterexample might be feasible [2018-12-31 05:37:31,781 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 31.12 05:37:31 BoogieIcfgContainer [2018-12-31 05:37:31,781 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-12-31 05:37:31,781 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2018-12-31 05:37:31,781 INFO L271 PluginConnector]: Initializing Witness Printer... [2018-12-31 05:37:31,782 INFO L276 PluginConnector]: Witness Printer initialized [2018-12-31 05:37:31,782 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.12 05:37:30" (3/4) ... [2018-12-31 05:37:31,785 INFO L138 WitnessPrinter]: Generating witness for reachability counterexample [2018-12-31 05:37:31,843 INFO L145 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2018-12-31 05:37:31,843 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2018-12-31 05:37:31,844 INFO L168 Benchmark]: Toolchain (without parser) took 2455.32 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 103.8 MB). Free memory was 951.4 MB in the beginning and 1.0 GB in the end (delta: -53.5 MB). Peak memory consumption was 50.3 MB. Max. memory is 11.5 GB. [2018-12-31 05:37:31,846 INFO L168 Benchmark]: CDTParser took 0.16 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 05:37:31,846 INFO L168 Benchmark]: CACSL2BoogieTranslator took 364.41 ms. Allocated memory is still 1.0 GB. Free memory was 951.4 MB in the beginning and 940.6 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. [2018-12-31 05:37:31,847 INFO L168 Benchmark]: Boogie Procedure Inliner took 67.75 ms. Allocated memory is still 1.0 GB. Free memory was 940.6 MB in the beginning and 935.3 MB in the end (delta: 5.4 MB). Peak memory consumption was 5.4 MB. Max. memory is 11.5 GB. [2018-12-31 05:37:31,848 INFO L168 Benchmark]: Boogie Preprocessor took 122.20 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 103.8 MB). Free memory was 935.3 MB in the beginning and 1.1 GB in the end (delta: -156.6 MB). Peak memory consumption was 13.5 MB. Max. memory is 11.5 GB. [2018-12-31 05:37:31,849 INFO L168 Benchmark]: RCFGBuilder took 406.48 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: 20.9 MB). Peak memory consumption was 20.9 MB. Max. memory is 11.5 GB. [2018-12-31 05:37:31,850 INFO L168 Benchmark]: TraceAbstraction took 1426.53 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: 66.0 MB). Peak memory consumption was 66.0 MB. Max. memory is 11.5 GB. [2018-12-31 05:37:31,850 INFO L168 Benchmark]: Witness Printer took 61.72 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 05:37:31,855 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.16 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 364.41 ms. Allocated memory is still 1.0 GB. Free memory was 951.4 MB in the beginning and 940.6 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 67.75 ms. Allocated memory is still 1.0 GB. Free memory was 940.6 MB in the beginning and 935.3 MB in the end (delta: 5.4 MB). Peak memory consumption was 5.4 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 122.20 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 103.8 MB). Free memory was 935.3 MB in the beginning and 1.1 GB in the end (delta: -156.6 MB). Peak memory consumption was 13.5 MB. Max. memory is 11.5 GB. * RCFGBuilder took 406.48 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: 20.9 MB). Peak memory consumption was 20.9 MB. Max. memory is 11.5 GB. * TraceAbstraction took 1426.53 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: 66.0 MB). Peak memory consumption was 66.0 MB. Max. memory is 11.5 GB. * Witness Printer took 61.72 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: [L14] unsigned int N_LIN=__VERIFIER_nondet_uint(); [L15] unsigned int N_COL=__VERIFIER_nondet_uint(); [L16] unsigned int j,k; [L17] int matriz[N_COL][N_LIN], maior; [L19] maior = __VERIFIER_nondet_int() [L20] j=0 [L20] COND TRUE jmaior [L26] EXPR matriz[j][k] [L26] maior = matriz[j][k] [L21] k++ [L21] COND FALSE !(k