./Ultimate.py --spec /storage/repos/svcomp/c/properties/valid-memsafety.prp --file /storage/repos/svcomp/c/array-memsafety/selectionsort_unsafe_false-valid-deref.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) 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/AutomizerMemDerefMemtrack.xml -i /storage/repos/svcomp/c/array-memsafety/selectionsort_unsafe_false-valid-deref.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-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 valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 952278f5e85aedce23895e068e08311605efdfa8 ..................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE(valid-deref) --- Real Ultimate output --- This is Ultimate 0.1.24-2e94e6a [2019-01-01 17:12:40,304 INFO L170 SettingsManager]: Resetting all preferences to default values... [2019-01-01 17:12:40,306 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2019-01-01 17:12:40,319 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-01-01 17:12:40,319 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-01-01 17:12:40,321 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-01-01 17:12:40,322 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-01-01 17:12:40,324 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2019-01-01 17:12:40,326 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-01-01 17:12:40,328 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-01-01 17:12:40,330 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-01-01 17:12:40,332 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-01-01 17:12:40,333 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-01-01 17:12:40,334 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-01-01 17:12:40,338 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-01-01 17:12:40,340 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-01-01 17:12:40,342 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-01-01 17:12:40,346 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-01-01 17:12:40,351 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2019-01-01 17:12:40,356 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-01-01 17:12:40,359 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-01-01 17:12:40,363 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-01-01 17:12:40,368 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-01-01 17:12:40,371 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-01-01 17:12:40,371 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-01-01 17:12:40,372 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-01-01 17:12:40,373 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-01-01 17:12:40,375 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-01-01 17:12:40,376 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2019-01-01 17:12:40,377 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-01-01 17:12:40,377 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2019-01-01 17:12:40,379 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-01-01 17:12:40,379 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-01-01 17:12:40,379 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2019-01-01 17:12:40,380 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2019-01-01 17:12:40,381 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2019-01-01 17:12:40,381 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2019-01-01 17:12:40,411 INFO L110 SettingsManager]: Loading preferences was successful [2019-01-01 17:12:40,413 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2019-01-01 17:12:40,414 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-01-01 17:12:40,415 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2019-01-01 17:12:40,415 INFO L133 SettingsManager]: * Use SBE=true [2019-01-01 17:12:40,415 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-01-01 17:12:40,416 INFO L133 SettingsManager]: * sizeof long=4 [2019-01-01 17:12:40,417 INFO L133 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2019-01-01 17:12:40,417 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2019-01-01 17:12:40,417 INFO L133 SettingsManager]: * sizeof POINTER=4 [2019-01-01 17:12:40,417 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2019-01-01 17:12:40,417 INFO L133 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2019-01-01 17:12:40,417 INFO L133 SettingsManager]: * Bitprecise bitfields=true [2019-01-01 17:12:40,418 INFO L133 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2019-01-01 17:12:40,418 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-01-01 17:12:40,419 INFO L133 SettingsManager]: * sizeof long double=12 [2019-01-01 17:12:40,419 INFO L133 SettingsManager]: * Use constant arrays=true [2019-01-01 17:12:40,419 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-01-01 17:12:40,419 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-01-01 17:12:40,420 INFO L133 SettingsManager]: * To the following directory=./dump/ [2019-01-01 17:12:40,422 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2019-01-01 17:12:40,422 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-01-01 17:12:40,422 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-01-01 17:12:40,422 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-01-01 17:12:40,422 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2019-01-01 17:12:40,423 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-01-01 17:12:40,424 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in 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 valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) 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 -> 952278f5e85aedce23895e068e08311605efdfa8 [2019-01-01 17:12:40,484 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-01-01 17:12:40,500 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-01-01 17:12:40,507 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-01-01 17:12:40,509 INFO L271 PluginConnector]: Initializing CDTParser... [2019-01-01 17:12:40,510 INFO L276 PluginConnector]: CDTParser initialized [2019-01-01 17:12:40,511 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/svcomp/c/array-memsafety/selectionsort_unsafe_false-valid-deref.i [2019-01-01 17:12:40,572 INFO L221 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4f60ea4a8/cccaf604cbeb4c60b01f96304be45846/FLAG8374f98d9 [2019-01-01 17:12:41,041 INFO L307 CDTParser]: Found 1 translation units. [2019-01-01 17:12:41,042 INFO L161 CDTParser]: Scanning /storage/repos/svcomp/c/array-memsafety/selectionsort_unsafe_false-valid-deref.i [2019-01-01 17:12:41,049 INFO L355 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4f60ea4a8/cccaf604cbeb4c60b01f96304be45846/FLAG8374f98d9 [2019-01-01 17:12:41,417 INFO L363 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4f60ea4a8/cccaf604cbeb4c60b01f96304be45846 [2019-01-01 17:12:41,422 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-01-01 17:12:41,425 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2019-01-01 17:12:41,426 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-01-01 17:12:41,426 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-01-01 17:12:41,430 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2019-01-01 17:12:41,432 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.01 05:12:41" (1/1) ... [2019-01-01 17:12:41,435 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5118fd0b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.01 05:12:41, skipping insertion in model container [2019-01-01 17:12:41,436 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.01 05:12:41" (1/1) ... [2019-01-01 17:12:41,446 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2019-01-01 17:12:41,467 INFO L176 MainTranslator]: Built tables and reachable declarations [2019-01-01 17:12:41,705 INFO L204 PostProcessor]: Analyzing one entry point: main [2019-01-01 17:12:41,728 INFO L191 MainTranslator]: Completed pre-run [2019-01-01 17:12:41,755 INFO L204 PostProcessor]: Analyzing one entry point: main [2019-01-01 17:12:41,777 INFO L195 MainTranslator]: Completed translation [2019-01-01 17:12:41,777 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.01 05:12:41 WrapperNode [2019-01-01 17:12:41,778 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-01-01 17:12:41,778 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-01-01 17:12:41,778 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-01-01 17:12:41,780 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2019-01-01 17:12:41,796 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.01 05:12:41" (1/1) ... [2019-01-01 17:12:41,797 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.01 05:12:41" (1/1) ... [2019-01-01 17:12:41,812 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.01 05:12:41" (1/1) ... [2019-01-01 17:12:41,813 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.01 05:12:41" (1/1) ... [2019-01-01 17:12:41,830 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.01 05:12:41" (1/1) ... [2019-01-01 17:12:41,837 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.01 05:12:41" (1/1) ... [2019-01-01 17:12:41,839 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.01 05:12:41" (1/1) ... [2019-01-01 17:12:41,843 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-01-01 17:12:41,843 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-01-01 17:12:41,843 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-01-01 17:12:41,844 INFO L276 PluginConnector]: RCFGBuilder initialized [2019-01-01 17:12:41,845 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.01 05:12:41" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-01-01 17:12:41,975 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-01-01 17:12:41,975 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-01-01 17:12:41,976 INFO L138 BoogieDeclarations]: Found implementation of procedure SelectionSort [2019-01-01 17:12:41,976 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-01-01 17:12:41,976 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-01-01 17:12:41,976 INFO L130 BoogieDeclarations]: Found specification of procedure SelectionSort [2019-01-01 17:12:41,976 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-01-01 17:12:41,976 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-01-01 17:12:41,977 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-01-01 17:12:41,977 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-01-01 17:12:41,977 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-01-01 17:12:41,977 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-01-01 17:12:42,450 INFO L275 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-01-01 17:12:42,451 INFO L280 CfgBuilder]: Removed 2 assue(true) statements. [2019-01-01 17:12:42,451 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.01 05:12:42 BoogieIcfgContainer [2019-01-01 17:12:42,451 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-01-01 17:12:42,452 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-01-01 17:12:42,452 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-01-01 17:12:42,455 INFO L276 PluginConnector]: TraceAbstraction initialized [2019-01-01 17:12:42,456 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 01.01 05:12:41" (1/3) ... [2019-01-01 17:12:42,458 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5b0b9e59 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.01 05:12:42, skipping insertion in model container [2019-01-01 17:12:42,458 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.01 05:12:41" (2/3) ... [2019-01-01 17:12:42,459 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5b0b9e59 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.01 05:12:42, skipping insertion in model container [2019-01-01 17:12:42,459 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.01 05:12:42" (3/3) ... [2019-01-01 17:12:42,462 INFO L112 eAbstractionObserver]: Analyzing ICFG selectionsort_unsafe_false-valid-deref.i [2019-01-01 17:12:42,473 INFO L156 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-01-01 17:12:42,488 INFO L168 ceAbstractionStarter]: Appying trace abstraction to program that has 13 error locations. [2019-01-01 17:12:42,506 INFO L257 AbstractCegarLoop]: Starting to check reachability of 13 error locations. [2019-01-01 17:12:42,535 INFO L133 ementStrategyFactory]: Using default assertion order modulation [2019-01-01 17:12:42,535 INFO L382 AbstractCegarLoop]: Interprodecural is true [2019-01-01 17:12:42,536 INFO L383 AbstractCegarLoop]: Hoare is false [2019-01-01 17:12:42,536 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-01-01 17:12:42,536 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-01-01 17:12:42,536 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-01-01 17:12:42,536 INFO L387 AbstractCegarLoop]: Difference is false [2019-01-01 17:12:42,536 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-01-01 17:12:42,537 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-01-01 17:12:42,557 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states. [2019-01-01 17:12:42,571 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2019-01-01 17:12:42,571 INFO L394 BasicCegarLoop]: Found error trace [2019-01-01 17:12:42,573 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-01-01 17:12:42,575 INFO L423 AbstractCegarLoop]: === Iteration 1 === [SelectionSortErr10REQUIRES_VIOLATION, SelectionSortErr4REQUIRES_VIOLATION, SelectionSortErr11REQUIRES_VIOLATION, SelectionSortErr0REQUIRES_VIOLATION, SelectionSortErr9REQUIRES_VIOLATION, SelectionSortErr5REQUIRES_VIOLATION, SelectionSortErr7REQUIRES_VIOLATION, SelectionSortErr1REQUIRES_VIOLATION, SelectionSortErr6REQUIRES_VIOLATION, SelectionSortErr3REQUIRES_VIOLATION, SelectionSortErr8REQUIRES_VIOLATION, SelectionSortErr2REQUIRES_VIOLATION, mainErr0ENSURES_VIOLATIONMEMORY_LEAK]=== [2019-01-01 17:12:42,584 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-01-01 17:12:42,584 INFO L82 PathProgramCache]: Analyzing trace with hash 229154885, now seen corresponding path program 1 times [2019-01-01 17:12:42,586 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-01-01 17:12:42,587 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-01-01 17:12:42,637 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-01-01 17:12:42,637 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-01-01 17:12:42,637 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-01-01 17:12:42,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-01-01 17:12:42,783 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-01-01 17:12:42,785 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-01-01 17:12:42,786 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-01-01 17:12:42,790 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-01-01 17:12:42,806 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-01-01 17:12:42,806 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-01-01 17:12:42,809 INFO L87 Difference]: Start difference. First operand 41 states. Second operand 3 states. [2019-01-01 17:12:42,901 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-01-01 17:12:42,901 INFO L93 Difference]: Finished difference Result 41 states and 43 transitions. [2019-01-01 17:12:42,902 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-01-01 17:12:42,904 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 11 [2019-01-01 17:12:42,905 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-01-01 17:12:42,913 INFO L225 Difference]: With dead ends: 41 [2019-01-01 17:12:42,913 INFO L226 Difference]: Without dead ends: 34 [2019-01-01 17:12:42,915 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 [2019-01-01 17:12:42,935 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34 states. [2019-01-01 17:12:42,952 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34 to 34. [2019-01-01 17:12:42,954 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34 states. [2019-01-01 17:12:42,955 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 36 transitions. [2019-01-01 17:12:42,957 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 36 transitions. Word has length 11 [2019-01-01 17:12:42,957 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-01-01 17:12:42,957 INFO L480 AbstractCegarLoop]: Abstraction has 34 states and 36 transitions. [2019-01-01 17:12:42,957 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-01-01 17:12:42,958 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 36 transitions. [2019-01-01 17:12:42,958 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2019-01-01 17:12:42,958 INFO L394 BasicCegarLoop]: Found error trace [2019-01-01 17:12:42,958 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-01-01 17:12:42,959 INFO L423 AbstractCegarLoop]: === Iteration 2 === [SelectionSortErr10REQUIRES_VIOLATION, SelectionSortErr4REQUIRES_VIOLATION, SelectionSortErr11REQUIRES_VIOLATION, SelectionSortErr0REQUIRES_VIOLATION, SelectionSortErr9REQUIRES_VIOLATION, SelectionSortErr5REQUIRES_VIOLATION, SelectionSortErr7REQUIRES_VIOLATION, SelectionSortErr1REQUIRES_VIOLATION, SelectionSortErr6REQUIRES_VIOLATION, SelectionSortErr3REQUIRES_VIOLATION, SelectionSortErr8REQUIRES_VIOLATION, SelectionSortErr2REQUIRES_VIOLATION, mainErr0ENSURES_VIOLATIONMEMORY_LEAK]=== [2019-01-01 17:12:42,959 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-01-01 17:12:42,959 INFO L82 PathProgramCache]: Analyzing trace with hash 229154931, now seen corresponding path program 1 times [2019-01-01 17:12:42,959 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-01-01 17:12:42,960 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-01-01 17:12:42,961 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-01-01 17:12:42,961 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-01-01 17:12:42,961 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-01-01 17:12:42,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-01-01 17:12:42,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-01-01 17:12:43,011 INFO L469 BasicCegarLoop]: Counterexample might be feasible [2019-01-01 17:12:43,035 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 01.01 05:12:43 BoogieIcfgContainer [2019-01-01 17:12:43,035 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-01-01 17:12:43,036 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-01-01 17:12:43,036 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-01-01 17:12:43,036 INFO L276 PluginConnector]: Witness Printer initialized [2019-01-01 17:12:43,037 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.01 05:12:42" (3/4) ... [2019-01-01 17:12:43,039 INFO L138 WitnessPrinter]: Generating witness for reachability counterexample [2019-01-01 17:12:43,084 INFO L145 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2019-01-01 17:12:43,084 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-01-01 17:12:43,085 INFO L168 Benchmark]: Toolchain (without parser) took 1662.85 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 136.3 MB). Free memory was 947.3 MB in the beginning and 1.1 GB in the end (delta: -131.4 MB). Peak memory consumption was 4.9 MB. Max. memory is 11.5 GB. [2019-01-01 17:12:43,087 INFO L168 Benchmark]: CDTParser took 0.20 ms. Allocated memory is still 1.0 GB. Free memory is still 972.8 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-01-01 17:12:43,088 INFO L168 Benchmark]: CACSL2BoogieTranslator took 352.17 ms. Allocated memory is still 1.0 GB. Free memory was 947.3 MB in the beginning and 936.6 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. [2019-01-01 17:12:43,089 INFO L168 Benchmark]: Boogie Preprocessor took 64.60 ms. Allocated memory is still 1.0 GB. Free memory is still 936.6 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-01-01 17:12:43,089 INFO L168 Benchmark]: RCFGBuilder took 607.96 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 136.3 MB). Free memory was 936.6 MB in the beginning and 1.1 GB in the end (delta: -169.0 MB). Peak memory consumption was 12.7 MB. Max. memory is 11.5 GB. [2019-01-01 17:12:43,091 INFO L168 Benchmark]: TraceAbstraction took 583.70 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 20.1 MB). Peak memory consumption was 20.1 MB. Max. memory is 11.5 GB. [2019-01-01 17:12:43,091 INFO L168 Benchmark]: Witness Printer took 48.46 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 6.7 MB). Peak memory consumption was 6.7 MB. Max. memory is 11.5 GB. [2019-01-01 17:12:43,096 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.20 ms. Allocated memory is still 1.0 GB. Free memory is still 972.8 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 352.17 ms. Allocated memory is still 1.0 GB. Free memory was 947.3 MB in the beginning and 936.6 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 64.60 ms. Allocated memory is still 1.0 GB. Free memory is still 936.6 MB. There was no memory consumed. Max. memory is 11.5 GB. * RCFGBuilder took 607.96 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 136.3 MB). Free memory was 936.6 MB in the beginning and 1.1 GB in the end (delta: -169.0 MB). Peak memory consumption was 12.7 MB. Max. memory is 11.5 GB. * TraceAbstraction took 583.70 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 20.1 MB). Peak memory consumption was 20.1 MB. Max. memory is 11.5 GB. * Witness Printer took 48.46 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 6.7 MB). Peak memory consumption was 6.7 MB. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 11]: pointer dereference may fail pointer dereference may fail We found a FailurePath: [L20] int *a; [L21] int array_size = __VERIFIER_nondet_int(); [L22] CALL SelectionSort(a, array_size) VAL [\old(array_size)=2, a={4:3}] [L4] int i; [L5] i = 0 VAL [\old(array_size)=2, a={4:3}, a={4:3}, array_size=2, i=0] [L5] COND TRUE i < array_size - 1 [L7] int j, min, temp; [L8] min = i [L9] j = i+1 VAL [\old(array_size)=2, a={4:3}, a={4:3}, array_size=2, i=0, j=1, min=0] [L9] COND TRUE j < array_size VAL [\old(array_size)=2, a={4:3}, a={4:3}, array_size=2, i=0, j=1, min=0] [L11] a[j] - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 41 locations, 13 error locations. UNSAFE Result, 0.5s OverallTime, 2 OverallIterations, 1 TraceHistogramMax, 0.1s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 37 SDtfs, 9 SDslu, 28 SDs, 0 SdLazy, 9 SolverSat, 1 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=41occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s AbstIntTime, 0 AbstIntIterations, 0 AbstIntStrong, NaN AbsIntWeakeningRatio, NaN AbsIntAvgWeakeningVarsNumRemoved, NaN AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 1 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 22 NumberOfCodeBlocks, 22 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 10 ConstructedInterpolants, 0 QuantifiedInterpolants, 140 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 1 InterpolantComputations, 1 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! Received shutdown request...