./Ultimate.py --spec /storage/repos/svcomp/c/properties/valid-memsafety.prp --file /storage/repos/svcomp/c/array-memsafety/diff_usafe_false-valid-deref.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 91b1670e 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/diff_usafe_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 c4e0be718883e167d4be051b03c3a4364271b932 ......................................................................................................................................................................................................................................... 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 0.1.24-91b1670 [2018-11-28 22:43:08,631 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-11-28 22:43:08,634 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-11-28 22:43:08,656 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-11-28 22:43:08,657 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-11-28 22:43:08,659 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-11-28 22:43:08,660 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-11-28 22:43:08,663 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-11-28 22:43:08,665 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-11-28 22:43:08,668 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-11-28 22:43:08,670 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-11-28 22:43:08,671 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-11-28 22:43:08,673 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-11-28 22:43:08,676 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-11-28 22:43:08,684 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-11-28 22:43:08,685 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-11-28 22:43:08,689 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-11-28 22:43:08,691 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-11-28 22:43:08,695 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-11-28 22:43:08,699 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-11-28 22:43:08,701 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-11-28 22:43:08,704 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-11-28 22:43:08,711 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-11-28 22:43:08,711 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-11-28 22:43:08,711 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-11-28 22:43:08,712 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-11-28 22:43:08,713 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-11-28 22:43:08,718 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-11-28 22:43:08,718 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-11-28 22:43:08,719 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-11-28 22:43:08,720 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-11-28 22:43:08,720 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-11-28 22:43:08,720 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-11-28 22:43:08,721 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-11-28 22:43:08,722 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-11-28 22:43:08,723 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-11-28 22:43:08,723 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2018-11-28 22:43:08,738 INFO L110 SettingsManager]: Loading preferences was successful [2018-11-28 22:43:08,739 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-11-28 22:43:08,740 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-11-28 22:43:08,740 INFO L133 SettingsManager]: * ... calls to implemented procedures=ONLY_FOR_CONCURRENT_PROGRAMS [2018-11-28 22:43:08,740 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-11-28 22:43:08,741 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-11-28 22:43:08,741 INFO L133 SettingsManager]: * Use SBE=true [2018-11-28 22:43:08,742 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-11-28 22:43:08,742 INFO L133 SettingsManager]: * sizeof long=4 [2018-11-28 22:43:08,742 INFO L133 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2018-11-28 22:43:08,742 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-11-28 22:43:08,742 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-11-28 22:43:08,743 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-11-28 22:43:08,743 INFO L133 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2018-11-28 22:43:08,743 INFO L133 SettingsManager]: * Bitprecise bitfields=true [2018-11-28 22:43:08,744 INFO L133 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2018-11-28 22:43:08,744 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-11-28 22:43:08,744 INFO L133 SettingsManager]: * sizeof long double=12 [2018-11-28 22:43:08,745 INFO L133 SettingsManager]: * Use constant arrays=true [2018-11-28 22:43:08,745 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-11-28 22:43:08,745 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-11-28 22:43:08,745 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-11-28 22:43:08,745 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-11-28 22:43:08,745 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-11-28 22:43:08,747 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-11-28 22:43:08,747 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-11-28 22:43:08,747 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-11-28 22:43:08,747 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-11-28 22:43:08,747 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 -> c4e0be718883e167d4be051b03c3a4364271b932 [2018-11-28 22:43:08,788 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-11-28 22:43:08,808 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-11-28 22:43:08,815 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-11-28 22:43:08,817 INFO L271 PluginConnector]: Initializing CDTParser... [2018-11-28 22:43:08,817 INFO L276 PluginConnector]: CDTParser initialized [2018-11-28 22:43:08,818 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/svcomp/c/array-memsafety/diff_usafe_false-valid-deref.i [2018-11-28 22:43:08,896 INFO L221 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/264a61722/501d4fdb93914255aab0bc843f0967d8/FLAG2507c1c62 [2018-11-28 22:43:09,369 INFO L307 CDTParser]: Found 1 translation units. [2018-11-28 22:43:09,370 INFO L161 CDTParser]: Scanning /storage/repos/svcomp/c/array-memsafety/diff_usafe_false-valid-deref.i [2018-11-28 22:43:09,377 INFO L355 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/264a61722/501d4fdb93914255aab0bc843f0967d8/FLAG2507c1c62 [2018-11-28 22:43:09,726 INFO L363 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/264a61722/501d4fdb93914255aab0bc843f0967d8 [2018-11-28 22:43:09,731 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-11-28 22:43:09,732 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-11-28 22:43:09,733 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-11-28 22:43:09,733 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-11-28 22:43:09,738 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-11-28 22:43:09,739 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 10:43:09" (1/1) ... [2018-11-28 22:43:09,744 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7eb0eb44 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 10:43:09, skipping insertion in model container [2018-11-28 22:43:09,745 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 10:43:09" (1/1) ... [2018-11-28 22:43:09,753 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-11-28 22:43:09,776 INFO L176 MainTranslator]: Built tables and reachable declarations [2018-11-28 22:43:09,994 INFO L203 PostProcessor]: Analyzing one entry point: main [2018-11-28 22:43:10,014 INFO L191 MainTranslator]: Completed pre-run [2018-11-28 22:43:10,040 INFO L203 PostProcessor]: Analyzing one entry point: main [2018-11-28 22:43:10,062 INFO L195 MainTranslator]: Completed translation [2018-11-28 22:43:10,063 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 10:43:10 WrapperNode [2018-11-28 22:43:10,064 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-11-28 22:43:10,065 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-11-28 22:43:10,065 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-11-28 22:43:10,065 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-11-28 22:43:10,080 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 10:43:10" (1/1) ... [2018-11-28 22:43:10,080 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 10:43:10" (1/1) ... [2018-11-28 22:43:10,093 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 10:43:10" (1/1) ... [2018-11-28 22:43:10,093 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 10:43:10" (1/1) ... [2018-11-28 22:43:10,102 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 10:43:10" (1/1) ... [2018-11-28 22:43:10,108 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 10:43:10" (1/1) ... [2018-11-28 22:43:10,110 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 10:43:10" (1/1) ... [2018-11-28 22:43:10,113 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-11-28 22:43:10,113 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-11-28 22:43:10,113 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-11-28 22:43:10,114 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-11-28 22:43:10,115 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 10:43:10" (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 [2018-11-28 22:43:10,250 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-11-28 22:43:10,250 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-11-28 22:43:10,251 INFO L138 BoogieDeclarations]: Found implementation of procedure diff [2018-11-28 22:43:10,251 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-11-28 22:43:10,251 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2018-11-28 22:43:10,251 INFO L130 BoogieDeclarations]: Found specification of procedure diff [2018-11-28 22:43:10,251 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2018-11-28 22:43:10,252 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2018-11-28 22:43:10,253 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-11-28 22:43:10,253 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-11-28 22:43:10,253 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-11-28 22:43:10,253 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2018-11-28 22:43:10,703 INFO L275 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-11-28 22:43:10,703 INFO L280 CfgBuilder]: Removed 2 assue(true) statements. [2018-11-28 22:43:10,703 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 10:43:10 BoogieIcfgContainer [2018-11-28 22:43:10,704 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-11-28 22:43:10,705 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-11-28 22:43:10,705 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-11-28 22:43:10,709 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-11-28 22:43:10,709 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.11 10:43:09" (1/3) ... [2018-11-28 22:43:10,710 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4801b11b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 10:43:10, skipping insertion in model container [2018-11-28 22:43:10,710 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 10:43:10" (2/3) ... [2018-11-28 22:43:10,711 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4801b11b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 10:43:10, skipping insertion in model container [2018-11-28 22:43:10,711 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 10:43:10" (3/3) ... [2018-11-28 22:43:10,714 INFO L112 eAbstractionObserver]: Analyzing ICFG diff_usafe_false-valid-deref.i [2018-11-28 22:43:10,725 INFO L156 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-11-28 22:43:10,737 INFO L168 ceAbstractionStarter]: Appying trace abstraction to program that has 9 error locations. [2018-11-28 22:43:10,757 INFO L257 AbstractCegarLoop]: Starting to check reachability of 9 error locations. [2018-11-28 22:43:10,786 INFO L133 ementStrategyFactory]: Using default assertion order modulation [2018-11-28 22:43:10,787 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-11-28 22:43:10,788 INFO L383 AbstractCegarLoop]: Hoare is false [2018-11-28 22:43:10,788 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-11-28 22:43:10,788 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-11-28 22:43:10,788 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-11-28 22:43:10,789 INFO L387 AbstractCegarLoop]: Difference is false [2018-11-28 22:43:10,789 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-11-28 22:43:10,789 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-11-28 22:43:10,808 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states. [2018-11-28 22:43:10,821 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2018-11-28 22:43:10,822 INFO L394 BasicCegarLoop]: Found error trace [2018-11-28 22:43:10,823 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-28 22:43:10,826 INFO L423 AbstractCegarLoop]: === Iteration 1 === [diffErr4REQUIRES_VIOLATION, diffErr3REQUIRES_VIOLATION, diffErr2REQUIRES_VIOLATION, diffErr7REQUIRES_VIOLATION, diffErr6REQUIRES_VIOLATION, diffErr1REQUIRES_VIOLATION, diffErr0REQUIRES_VIOLATION, diffErr5REQUIRES_VIOLATION, mainErr0ENSURES_VIOLATIONMEMORY_LEAK]=== [2018-11-28 22:43:10,832 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 22:43:10,833 INFO L82 PathProgramCache]: Analyzing trace with hash -633667021, now seen corresponding path program 1 times [2018-11-28 22:43:10,835 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-28 22:43:10,835 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-28 22:43:10,888 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 22:43:10,888 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-28 22:43:10,888 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 22:43:10,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-28 22:43:10,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-28 22:43:11,003 INFO L469 BasicCegarLoop]: Counterexample might be feasible [2018-11-28 22:43:11,037 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 28.11 10:43:11 BoogieIcfgContainer [2018-11-28 22:43:11,037 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-11-28 22:43:11,038 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2018-11-28 22:43:11,038 INFO L271 PluginConnector]: Initializing Witness Printer... [2018-11-28 22:43:11,039 INFO L276 PluginConnector]: Witness Printer initialized [2018-11-28 22:43:11,039 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 10:43:10" (3/4) ... [2018-11-28 22:43:11,042 INFO L138 WitnessPrinter]: Generating witness for reachability counterexample [2018-11-28 22:43:11,102 INFO L145 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2018-11-28 22:43:11,102 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2018-11-28 22:43:11,104 INFO L168 Benchmark]: Toolchain (without parser) took 1372.59 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 116.4 MB). Free memory was 951.3 MB in the beginning and 1.1 GB in the end (delta: -120.1 MB). There was no memory consumed. Max. memory is 11.5 GB. [2018-11-28 22:43:11,106 INFO L168 Benchmark]: CDTParser took 0.17 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. [2018-11-28 22:43:11,106 INFO L168 Benchmark]: CACSL2BoogieTranslator took 331.56 ms. Allocated memory is still 1.0 GB. Free memory was 951.3 MB in the beginning and 940.6 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. [2018-11-28 22:43:11,107 INFO L168 Benchmark]: Boogie Preprocessor took 47.79 ms. Allocated memory is still 1.0 GB. Free memory is still 940.6 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-11-28 22:43:11,107 INFO L168 Benchmark]: RCFGBuilder took 590.45 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 116.4 MB). Free memory was 940.6 MB in the beginning and 1.1 GB in the end (delta: -151.5 MB). Peak memory consumption was 24.6 MB. Max. memory is 11.5 GB. [2018-11-28 22:43:11,108 INFO L168 Benchmark]: TraceAbstraction took 332.97 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: 13.8 MB). Peak memory consumption was 13.8 MB. Max. memory is 11.5 GB. [2018-11-28 22:43:11,110 INFO L168 Benchmark]: Witness Printer took 64.23 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: 6.9 MB). Peak memory consumption was 6.9 MB. Max. memory is 11.5 GB. [2018-11-28 22:43:11,114 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.17 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 331.56 ms. Allocated memory is still 1.0 GB. Free memory was 951.3 MB in the beginning and 940.6 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 47.79 ms. Allocated memory is still 1.0 GB. Free memory is still 940.6 MB. There was no memory consumed. Max. memory is 11.5 GB. * RCFGBuilder took 590.45 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 116.4 MB). Free memory was 940.6 MB in the beginning and 1.1 GB in the end (delta: -151.5 MB). Peak memory consumption was 24.6 MB. Max. memory is 11.5 GB. * TraceAbstraction took 332.97 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: 13.8 MB). Peak memory consumption was 13.8 MB. Max. memory is 11.5 GB. * Witness Printer took 64.23 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: 6.9 MB). Peak memory consumption was 6.9 MB. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 13]: pointer dereference may fail pointer dereference may fail We found a FailurePath: [L27] int *A; [L28] int Alen = __VERIFIER_nondet_int(); [L29] int *B; [L30] int Blen = __VERIFIER_nondet_int(); [L31] int *D; VAL [Alen=2, Blen=3] [L32] CALL diff(A, Alen, B, Blen, D) VAL [\old(Alen)=2, \old(Blen)=3, A={11:7}, B={8:10}, D={5:9}] [L4] int k = 0; [L5] int i = 0; [L6] int l1 = Alen; [L7] int l2 = Blen; [L8] int found; VAL [\old(Alen)=2, \old(Blen)=3, A={11:7}, A={11:7}, Alen=2, B={8:10}, B={8:10}, Blen=3, D={5:9}, D={5:9}, i=0, k=0, l1=2, l2=3] [L9] COND TRUE i < l1 [L10] int j = 0; [L11] found = 0 VAL [\old(Alen)=2, \old(Blen)=3, A={11:7}, A={11:7}, Alen=2, B={8:10}, B={8:10}, Blen=3, D={5:9}, D={5:9}, found=0, i=0, j=0, k=0, l1=2, l2=3] [L12] COND TRUE j < l2 && !found VAL [\old(Alen)=2, \old(Blen)=3, A={11:7}, A={11:7}, Alen=2, B={8:10}, B={8:10}, Blen=3, D={5:9}, D={5:9}, found=0, i=0, j=0, k=0, l1=2, l2=3] [L13] A[i] - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 34 locations, 9 error locations. UNSAFE Result, 0.2s OverallTime, 1 OverallIterations, 1 TraceHistogramMax, 0.0s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: No data available, PredicateUnifierStatistics: No data available, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=34occurred 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: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 11 NumberOfCodeBlocks, 11 NumberOfCodeBlocksAsserted, 1 NumberOfCheckSat, 0 ConstructedInterpolants, 0 QuantifiedInterpolants, 0 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 0 InterpolantComputations, 0 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...