./Ultimate.py --spec /storage/repos/svcomp/c/properties/valid-memsafety.prp --file /storage/repos/svcomp/c/memsafety-ext3/scopes4_false-valid-deref.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 0ed9222f Calling Ultimate with: java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx12G -Xms1G -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerMemDerefMemtrack.xml -i /storage/repos/svcomp/c/memsafety-ext3/scopes4_false-valid-deref.c -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 25981771a012eec333f97d8302486eae22970d9e ............................................................................................................................................................................................................................................................................................................. 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 0.1.24-0ed9222-m [2019-01-14 20:49:37,426 INFO L170 SettingsManager]: Resetting all preferences to default values... [2019-01-14 20:49:37,427 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2019-01-14 20:49:37,441 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-01-14 20:49:37,441 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-01-14 20:49:37,442 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-01-14 20:49:37,444 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-01-14 20:49:37,446 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2019-01-14 20:49:37,447 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-01-14 20:49:37,448 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-01-14 20:49:37,449 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-01-14 20:49:37,450 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-01-14 20:49:37,451 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-01-14 20:49:37,452 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-01-14 20:49:37,453 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-01-14 20:49:37,454 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-01-14 20:49:37,455 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-01-14 20:49:37,457 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-01-14 20:49:37,459 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2019-01-14 20:49:37,461 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-01-14 20:49:37,462 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-01-14 20:49:37,464 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-01-14 20:49:37,466 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-01-14 20:49:37,466 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-01-14 20:49:37,467 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-01-14 20:49:37,468 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-01-14 20:49:37,469 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-01-14 20:49:37,470 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-01-14 20:49:37,470 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2019-01-14 20:49:37,472 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-01-14 20:49:37,472 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2019-01-14 20:49:37,473 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-01-14 20:49:37,473 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-01-14 20:49:37,473 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2019-01-14 20:49:37,475 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2019-01-14 20:49:37,476 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2019-01-14 20:49:37,476 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2019-01-14 20:49:37,491 INFO L110 SettingsManager]: Loading preferences was successful [2019-01-14 20:49:37,491 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2019-01-14 20:49:37,492 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-01-14 20:49:37,492 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2019-01-14 20:49:37,493 INFO L133 SettingsManager]: * Use SBE=true [2019-01-14 20:49:37,493 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-01-14 20:49:37,494 INFO L133 SettingsManager]: * sizeof long=4 [2019-01-14 20:49:37,494 INFO L133 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2019-01-14 20:49:37,494 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2019-01-14 20:49:37,494 INFO L133 SettingsManager]: * sizeof POINTER=4 [2019-01-14 20:49:37,494 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2019-01-14 20:49:37,494 INFO L133 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2019-01-14 20:49:37,494 INFO L133 SettingsManager]: * Bitprecise bitfields=true [2019-01-14 20:49:37,495 INFO L133 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2019-01-14 20:49:37,495 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-01-14 20:49:37,495 INFO L133 SettingsManager]: * sizeof long double=12 [2019-01-14 20:49:37,495 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-01-14 20:49:37,495 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-01-14 20:49:37,496 INFO L133 SettingsManager]: * To the following directory=./dump/ [2019-01-14 20:49:37,497 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2019-01-14 20:49:37,497 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-01-14 20:49:37,498 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-01-14 20:49:37,498 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-01-14 20:49:37,498 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2019-01-14 20:49:37,498 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-01-14 20:49:37,499 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 -> 25981771a012eec333f97d8302486eae22970d9e [2019-01-14 20:49:37,534 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-01-14 20:49:37,546 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-01-14 20:49:37,550 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-01-14 20:49:37,552 INFO L271 PluginConnector]: Initializing CDTParser... [2019-01-14 20:49:37,552 INFO L276 PluginConnector]: CDTParser initialized [2019-01-14 20:49:37,553 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/svcomp/c/memsafety-ext3/scopes4_false-valid-deref.c [2019-01-14 20:49:37,609 INFO L221 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/34ba2d924/b7a138ecbdd64075b69fc7d7c083d2ee/FLAG5640849ad [2019-01-14 20:49:38,040 INFO L307 CDTParser]: Found 1 translation units. [2019-01-14 20:49:38,041 INFO L161 CDTParser]: Scanning /storage/repos/svcomp/c/memsafety-ext3/scopes4_false-valid-deref.c [2019-01-14 20:49:38,046 INFO L355 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/34ba2d924/b7a138ecbdd64075b69fc7d7c083d2ee/FLAG5640849ad [2019-01-14 20:49:38,422 INFO L363 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/34ba2d924/b7a138ecbdd64075b69fc7d7c083d2ee [2019-01-14 20:49:38,425 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-01-14 20:49:38,427 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2019-01-14 20:49:38,428 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-01-14 20:49:38,428 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-01-14 20:49:38,431 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2019-01-14 20:49:38,432 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.01 08:49:38" (1/1) ... [2019-01-14 20:49:38,435 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@12a43cdb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.01 08:49:38, skipping insertion in model container [2019-01-14 20:49:38,435 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.01 08:49:38" (1/1) ... [2019-01-14 20:49:38,442 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2019-01-14 20:49:38,457 INFO L176 MainTranslator]: Built tables and reachable declarations [2019-01-14 20:49:38,648 INFO L208 PostProcessor]: Analyzing one entry point: main [2019-01-14 20:49:38,660 INFO L191 MainTranslator]: Completed pre-run [2019-01-14 20:49:38,680 INFO L208 PostProcessor]: Analyzing one entry point: main [2019-01-14 20:49:38,698 INFO L195 MainTranslator]: Completed translation [2019-01-14 20:49:38,699 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.01 08:49:38 WrapperNode [2019-01-14 20:49:38,699 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-01-14 20:49:38,700 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-01-14 20:49:38,700 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-01-14 20:49:38,700 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2019-01-14 20:49:38,714 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.01 08:49:38" (1/1) ... [2019-01-14 20:49:38,715 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.01 08:49:38" (1/1) ... [2019-01-14 20:49:38,723 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.01 08:49:38" (1/1) ... [2019-01-14 20:49:38,723 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.01 08:49:38" (1/1) ... [2019-01-14 20:49:38,730 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.01 08:49:38" (1/1) ... [2019-01-14 20:49:38,731 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.01 08:49:38" (1/1) ... [2019-01-14 20:49:38,732 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.01 08:49:38" (1/1) ... [2019-01-14 20:49:38,734 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-01-14 20:49:38,735 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-01-14 20:49:38,735 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-01-14 20:49:38,735 INFO L276 PluginConnector]: RCFGBuilder initialized [2019-01-14 20:49:38,739 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.01 08:49:38" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-01-14 20:49:38,856 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-01-14 20:49:38,856 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-01-14 20:49:38,856 INFO L138 BoogieDeclarations]: Found implementation of procedure foo2 [2019-01-14 20:49:38,856 INFO L138 BoogieDeclarations]: Found implementation of procedure foo [2019-01-14 20:49:38,857 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-01-14 20:49:38,857 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2019-01-14 20:49:38,857 INFO L130 BoogieDeclarations]: Found specification of procedure foo2 [2019-01-14 20:49:38,857 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-01-14 20:49:38,857 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-01-14 20:49:38,857 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-01-14 20:49:38,857 INFO L130 BoogieDeclarations]: Found specification of procedure foo [2019-01-14 20:49:38,858 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-01-14 20:49:38,858 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-01-14 20:49:38,858 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-01-14 20:49:38,858 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2019-01-14 20:49:38,858 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-01-14 20:49:39,222 INFO L281 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-01-14 20:49:39,222 INFO L286 CfgBuilder]: Removed 0 assue(true) statements. [2019-01-14 20:49:39,224 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.01 08:49:39 BoogieIcfgContainer [2019-01-14 20:49:39,224 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-01-14 20:49:39,225 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-01-14 20:49:39,225 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-01-14 20:49:39,229 INFO L276 PluginConnector]: TraceAbstraction initialized [2019-01-14 20:49:39,229 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.01 08:49:38" (1/3) ... [2019-01-14 20:49:39,230 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@36176ba3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.01 08:49:39, skipping insertion in model container [2019-01-14 20:49:39,231 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.01 08:49:38" (2/3) ... [2019-01-14 20:49:39,231 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@36176ba3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.01 08:49:39, skipping insertion in model container [2019-01-14 20:49:39,231 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.01 08:49:39" (3/3) ... [2019-01-14 20:49:39,236 INFO L112 eAbstractionObserver]: Analyzing ICFG scopes4_false-valid-deref.c [2019-01-14 20:49:39,247 INFO L156 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-01-14 20:49:39,255 INFO L168 ceAbstractionStarter]: Appying trace abstraction to program that has 5 error locations. [2019-01-14 20:49:39,269 INFO L257 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2019-01-14 20:49:39,294 INFO L133 ementStrategyFactory]: Using default assertion order modulation [2019-01-14 20:49:39,295 INFO L382 AbstractCegarLoop]: Interprodecural is true [2019-01-14 20:49:39,295 INFO L383 AbstractCegarLoop]: Hoare is false [2019-01-14 20:49:39,295 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-01-14 20:49:39,295 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-01-14 20:49:39,296 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-01-14 20:49:39,296 INFO L387 AbstractCegarLoop]: Difference is false [2019-01-14 20:49:39,296 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-01-14 20:49:39,296 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-01-14 20:49:39,313 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states. [2019-01-14 20:49:39,323 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2019-01-14 20:49:39,323 INFO L394 BasicCegarLoop]: Found error trace [2019-01-14 20:49:39,324 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-01-14 20:49:39,327 INFO L423 AbstractCegarLoop]: === Iteration 1 === [mainErr2ENSURES_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, foo2Err0REQUIRES_VIOLATION, foo2Err1REQUIRES_VIOLATION]=== [2019-01-14 20:49:39,337 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-01-14 20:49:39,337 INFO L82 PathProgramCache]: Analyzing trace with hash 1728099290, now seen corresponding path program 1 times [2019-01-14 20:49:39,340 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-01-14 20:49:39,340 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-01-14 20:49:39,394 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-01-14 20:49:39,394 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-01-14 20:49:39,394 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-01-14 20:49:39,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-01-14 20:49:39,515 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-01-14 20:49:39,517 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-01-14 20:49:39,518 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-01-14 20:49:39,521 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-01-14 20:49:39,532 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-01-14 20:49:39,533 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-01-14 20:49:39,535 INFO L87 Difference]: Start difference. First operand 28 states. Second operand 3 states. [2019-01-14 20:49:39,635 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-01-14 20:49:39,636 INFO L93 Difference]: Finished difference Result 27 states and 26 transitions. [2019-01-14 20:49:39,637 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-01-14 20:49:39,638 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 10 [2019-01-14 20:49:39,639 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-01-14 20:49:39,648 INFO L225 Difference]: With dead ends: 27 [2019-01-14 20:49:39,648 INFO L226 Difference]: Without dead ends: 24 [2019-01-14 20:49:39,650 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-01-14 20:49:39,668 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24 states. [2019-01-14 20:49:39,684 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24 to 24. [2019-01-14 20:49:39,686 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2019-01-14 20:49:39,687 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 23 transitions. [2019-01-14 20:49:39,688 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 23 transitions. Word has length 10 [2019-01-14 20:49:39,688 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-01-14 20:49:39,689 INFO L480 AbstractCegarLoop]: Abstraction has 24 states and 23 transitions. [2019-01-14 20:49:39,689 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-01-14 20:49:39,689 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 23 transitions. [2019-01-14 20:49:39,690 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2019-01-14 20:49:39,690 INFO L394 BasicCegarLoop]: Found error trace [2019-01-14 20:49:39,690 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-01-14 20:49:39,691 INFO L423 AbstractCegarLoop]: === Iteration 2 === [mainErr2ENSURES_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, foo2Err0REQUIRES_VIOLATION, foo2Err1REQUIRES_VIOLATION]=== [2019-01-14 20:49:39,691 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-01-14 20:49:39,691 INFO L82 PathProgramCache]: Analyzing trace with hash 1728099291, now seen corresponding path program 1 times [2019-01-14 20:49:39,691 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-01-14 20:49:39,692 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-01-14 20:49:39,693 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-01-14 20:49:39,694 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-01-14 20:49:39,694 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-01-14 20:49:39,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-01-14 20:49:39,819 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-01-14 20:49:39,822 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-01-14 20:49:39,822 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-01-14 20:49:39,824 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-01-14 20:49:39,825 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-01-14 20:49:39,825 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-01-14 20:49:39,826 INFO L87 Difference]: Start difference. First operand 24 states and 23 transitions. Second operand 3 states. [2019-01-14 20:49:39,899 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-01-14 20:49:39,899 INFO L93 Difference]: Finished difference Result 23 states and 22 transitions. [2019-01-14 20:49:39,900 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-01-14 20:49:39,900 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 10 [2019-01-14 20:49:39,900 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-01-14 20:49:39,901 INFO L225 Difference]: With dead ends: 23 [2019-01-14 20:49:39,901 INFO L226 Difference]: Without dead ends: 23 [2019-01-14 20:49:39,902 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-01-14 20:49:39,903 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2019-01-14 20:49:39,906 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 23. [2019-01-14 20:49:39,906 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2019-01-14 20:49:39,907 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 22 transitions. [2019-01-14 20:49:39,907 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 22 transitions. Word has length 10 [2019-01-14 20:49:39,907 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-01-14 20:49:39,907 INFO L480 AbstractCegarLoop]: Abstraction has 23 states and 22 transitions. [2019-01-14 20:49:39,907 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-01-14 20:49:39,908 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 22 transitions. [2019-01-14 20:49:39,908 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2019-01-14 20:49:39,908 INFO L394 BasicCegarLoop]: Found error trace [2019-01-14 20:49:39,908 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-01-14 20:49:39,909 INFO L423 AbstractCegarLoop]: === Iteration 3 === [mainErr2ENSURES_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, foo2Err0REQUIRES_VIOLATION, foo2Err1REQUIRES_VIOLATION]=== [2019-01-14 20:49:39,909 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-01-14 20:49:39,909 INFO L82 PathProgramCache]: Analyzing trace with hash 688977249, now seen corresponding path program 1 times [2019-01-14 20:49:39,909 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-01-14 20:49:39,909 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-01-14 20:49:39,910 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-01-14 20:49:39,911 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-01-14 20:49:39,911 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-01-14 20:49:39,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-01-14 20:49:39,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-01-14 20:49:39,994 INFO L469 BasicCegarLoop]: Counterexample might be feasible [2019-01-14 20:49:40,022 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 14.01 08:49:40 BoogieIcfgContainer [2019-01-14 20:49:40,022 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-01-14 20:49:40,022 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-01-14 20:49:40,022 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-01-14 20:49:40,023 INFO L276 PluginConnector]: Witness Printer initialized [2019-01-14 20:49:40,023 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.01 08:49:39" (3/4) ... [2019-01-14 20:49:40,026 INFO L138 WitnessPrinter]: Generating witness for reachability counterexample [2019-01-14 20:49:40,067 INFO L145 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2019-01-14 20:49:40,067 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-01-14 20:49:40,068 INFO L168 Benchmark]: Toolchain (without parser) took 1642.24 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 140.0 MB). Free memory was 947.3 MB in the beginning and 1.1 GB in the end (delta: -122.9 MB). Peak memory consumption was 17.1 MB. Max. memory is 11.5 GB. [2019-01-14 20:49:40,070 INFO L168 Benchmark]: CDTParser took 0.19 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. [2019-01-14 20:49:40,070 INFO L168 Benchmark]: CACSL2BoogieTranslator took 271.70 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. [2019-01-14 20:49:40,071 INFO L168 Benchmark]: Boogie Preprocessor took 34.63 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. [2019-01-14 20:49:40,072 INFO L168 Benchmark]: RCFGBuilder took 489.62 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 140.0 MB). Free memory was 936.6 MB in the beginning and 1.1 GB in the end (delta: -173.6 MB). Peak memory consumption was 18.4 MB. Max. memory is 11.5 GB. [2019-01-14 20:49:40,073 INFO L168 Benchmark]: TraceAbstraction took 796.93 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: 33.3 MB). Peak memory consumption was 33.3 MB. Max. memory is 11.5 GB. [2019-01-14 20:49:40,074 INFO L168 Benchmark]: Witness Printer took 44.97 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. [2019-01-14 20:49:40,081 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.19 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 271.70 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 34.63 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 489.62 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 140.0 MB). Free memory was 936.6 MB in the beginning and 1.1 GB in the end (delta: -173.6 MB). Peak memory consumption was 18.4 MB. Max. memory is 11.5 GB. * TraceAbstraction took 796.93 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: 33.3 MB). Peak memory consumption was 33.3 MB. Max. memory is 11.5 GB. * Witness Printer took 44.97 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: 18]: pointer dereference may fail pointer dereference may fail We found a FailurePath: [L17] CALL, EXPR foo() [L12] int arr[123]; [L13] CALL, EXPR foo2() [L5] int arr[1024]; VAL [arr={-1:0}] [L6] arr[194] = 13 VAL [arr={-1:0}] [L7] return arr + 1; [L7] return arr + 1; VAL [\result={-1:4}] [L13] RET, EXPR foo2() VAL [foo2()={-1:4}] [L13] return foo2(); [L17] RET, EXPR foo() VAL [foo()={-1:4}] [L17] int *a = foo(); [L18] \read(*a) - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 28 locations, 5 error locations. UNSAFE Result, 0.7s OverallTime, 3 OverallIterations, 1 TraceHistogramMax, 0.2s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 43 SDtfs, 3 SDslu, 33 SDs, 0 SdLazy, 15 SolverSat, 0 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=28occurred 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, 2 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.1s InterpolantComputationTime, 38 NumberOfCodeBlocks, 38 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 18 ConstructedInterpolants, 0 QuantifiedInterpolants, 270 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 2 InterpolantComputations, 2 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...