./Ultimate.py --spec /storage/repos/svcomp/c/properties/valid-memsafety.prp --file /storage/repos/svcomp/c/ldv-memsafety/memset_false-valid-deref-write.c --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/ldv-memsafety/memset_false-valid-deref-write.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 220c5b7d1335976595fe0a31f6bacc2d390016c7 ........................................................................................................................................................................................................................................................ 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 18:11:36,446 INFO L170 SettingsManager]: Resetting all preferences to default values... [2019-01-01 18:11:36,451 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2019-01-01 18:11:36,470 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-01-01 18:11:36,471 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-01-01 18:11:36,472 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-01-01 18:11:36,473 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-01-01 18:11:36,478 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2019-01-01 18:11:36,480 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-01-01 18:11:36,483 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-01-01 18:11:36,491 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-01-01 18:11:36,491 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-01-01 18:11:36,492 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-01-01 18:11:36,493 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-01-01 18:11:36,497 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-01-01 18:11:36,497 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-01-01 18:11:36,499 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-01-01 18:11:36,502 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-01-01 18:11:36,507 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2019-01-01 18:11:36,509 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-01-01 18:11:36,510 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-01-01 18:11:36,511 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-01-01 18:11:36,513 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-01-01 18:11:36,513 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-01-01 18:11:36,513 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-01-01 18:11:36,514 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-01-01 18:11:36,515 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-01-01 18:11:36,516 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-01-01 18:11:36,517 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2019-01-01 18:11:36,518 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-01-01 18:11:36,518 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2019-01-01 18:11:36,519 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-01-01 18:11:36,519 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-01-01 18:11:36,519 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2019-01-01 18:11:36,520 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2019-01-01 18:11:36,520 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2019-01-01 18:11:36,521 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2019-01-01 18:11:36,548 INFO L110 SettingsManager]: Loading preferences was successful [2019-01-01 18:11:36,549 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2019-01-01 18:11:36,551 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-01-01 18:11:36,552 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2019-01-01 18:11:36,552 INFO L133 SettingsManager]: * Use SBE=true [2019-01-01 18:11:36,552 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-01-01 18:11:36,553 INFO L133 SettingsManager]: * sizeof long=4 [2019-01-01 18:11:36,553 INFO L133 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2019-01-01 18:11:36,553 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2019-01-01 18:11:36,553 INFO L133 SettingsManager]: * sizeof POINTER=4 [2019-01-01 18:11:36,553 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2019-01-01 18:11:36,553 INFO L133 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2019-01-01 18:11:36,554 INFO L133 SettingsManager]: * Bitprecise bitfields=true [2019-01-01 18:11:36,554 INFO L133 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2019-01-01 18:11:36,554 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-01-01 18:11:36,554 INFO L133 SettingsManager]: * sizeof long double=12 [2019-01-01 18:11:36,554 INFO L133 SettingsManager]: * Use constant arrays=true [2019-01-01 18:11:36,555 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-01-01 18:11:36,555 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-01-01 18:11:36,555 INFO L133 SettingsManager]: * To the following directory=./dump/ [2019-01-01 18:11:36,555 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2019-01-01 18:11:36,555 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-01-01 18:11:36,555 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-01-01 18:11:36,556 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-01-01 18:11:36,556 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2019-01-01 18:11:36,556 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-01-01 18:11:36,556 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 -> 220c5b7d1335976595fe0a31f6bacc2d390016c7 [2019-01-01 18:11:36,591 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-01-01 18:11:36,605 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-01-01 18:11:36,610 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-01-01 18:11:36,612 INFO L271 PluginConnector]: Initializing CDTParser... [2019-01-01 18:11:36,612 INFO L276 PluginConnector]: CDTParser initialized [2019-01-01 18:11:36,613 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/svcomp/c/ldv-memsafety/memset_false-valid-deref-write.c [2019-01-01 18:11:36,680 INFO L221 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7cf817771/fbbf6911fce1472986e28894eac04da5/FLAGbc6eb2b23 [2019-01-01 18:11:37,173 INFO L307 CDTParser]: Found 1 translation units. [2019-01-01 18:11:37,174 INFO L161 CDTParser]: Scanning /storage/repos/svcomp/c/ldv-memsafety/memset_false-valid-deref-write.c [2019-01-01 18:11:37,181 INFO L355 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7cf817771/fbbf6911fce1472986e28894eac04da5/FLAGbc6eb2b23 [2019-01-01 18:11:37,499 INFO L363 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7cf817771/fbbf6911fce1472986e28894eac04da5 [2019-01-01 18:11:37,503 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-01-01 18:11:37,504 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2019-01-01 18:11:37,505 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-01-01 18:11:37,505 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-01-01 18:11:37,509 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2019-01-01 18:11:37,510 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.01 06:11:37" (1/1) ... [2019-01-01 18:11:37,513 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@24323cfc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.01 06:11:37, skipping insertion in model container [2019-01-01 18:11:37,514 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.01 06:11:37" (1/1) ... [2019-01-01 18:11:37,523 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2019-01-01 18:11:37,541 INFO L176 MainTranslator]: Built tables and reachable declarations [2019-01-01 18:11:37,705 INFO L204 PostProcessor]: Analyzing one entry point: main [2019-01-01 18:11:37,715 INFO L191 MainTranslator]: Completed pre-run [2019-01-01 18:11:37,734 INFO L204 PostProcessor]: Analyzing one entry point: main [2019-01-01 18:11:37,752 INFO L195 MainTranslator]: Completed translation [2019-01-01 18:11:37,752 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.01 06:11:37 WrapperNode [2019-01-01 18:11:37,753 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-01-01 18:11:37,753 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-01-01 18:11:37,753 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-01-01 18:11:37,753 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2019-01-01 18:11:37,767 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.01 06:11:37" (1/1) ... [2019-01-01 18:11:37,768 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.01 06:11:37" (1/1) ... [2019-01-01 18:11:37,776 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.01 06:11:37" (1/1) ... [2019-01-01 18:11:37,776 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.01 06:11:37" (1/1) ... [2019-01-01 18:11:37,781 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.01 06:11:37" (1/1) ... [2019-01-01 18:11:37,790 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.01 06:11:37" (1/1) ... [2019-01-01 18:11:37,791 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.01 06:11:37" (1/1) ... [2019-01-01 18:11:37,794 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-01-01 18:11:37,795 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-01-01 18:11:37,795 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-01-01 18:11:37,795 INFO L276 PluginConnector]: RCFGBuilder initialized [2019-01-01 18:11:37,796 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.01 06:11:37" (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 18:11:37,919 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-01-01 18:11:37,919 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-01-01 18:11:37,919 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-01-01 18:11:37,919 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2019-01-01 18:11:37,920 INFO L130 BoogieDeclarations]: Found specification of procedure memset [2019-01-01 18:11:37,920 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-01-01 18:11:37,920 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-01-01 18:11:37,920 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2019-01-01 18:11:37,920 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-01-01 18:11:37,920 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-01-01 18:11:37,920 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-01-01 18:11:38,023 WARN L615 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2019-01-01 18:11:38,138 INFO L275 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-01-01 18:11:38,139 INFO L280 CfgBuilder]: Removed 0 assue(true) statements. [2019-01-01 18:11:38,139 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.01 06:11:38 BoogieIcfgContainer [2019-01-01 18:11:38,139 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-01-01 18:11:38,141 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-01-01 18:11:38,141 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-01-01 18:11:38,145 INFO L276 PluginConnector]: TraceAbstraction initialized [2019-01-01 18:11:38,145 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 01.01 06:11:37" (1/3) ... [2019-01-01 18:11:38,146 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@268c05b7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.01 06:11:38, skipping insertion in model container [2019-01-01 18:11:38,146 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.01 06:11:37" (2/3) ... [2019-01-01 18:11:38,147 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@268c05b7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.01 06:11:38, skipping insertion in model container [2019-01-01 18:11:38,148 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.01 06:11:38" (3/3) ... [2019-01-01 18:11:38,149 INFO L112 eAbstractionObserver]: Analyzing ICFG memset_false-valid-deref-write.c [2019-01-01 18:11:38,162 INFO L156 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-01-01 18:11:38,171 INFO L168 ceAbstractionStarter]: Appying trace abstraction to program that has 3 error locations. [2019-01-01 18:11:38,197 INFO L257 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2019-01-01 18:11:38,259 INFO L133 ementStrategyFactory]: Using default assertion order modulation [2019-01-01 18:11:38,260 INFO L382 AbstractCegarLoop]: Interprodecural is true [2019-01-01 18:11:38,260 INFO L383 AbstractCegarLoop]: Hoare is false [2019-01-01 18:11:38,260 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-01-01 18:11:38,260 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-01-01 18:11:38,260 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-01-01 18:11:38,261 INFO L387 AbstractCegarLoop]: Difference is false [2019-01-01 18:11:38,261 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-01-01 18:11:38,261 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-01-01 18:11:38,299 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states. [2019-01-01 18:11:38,320 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2019-01-01 18:11:38,321 INFO L394 BasicCegarLoop]: Found error trace [2019-01-01 18:11:38,322 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2019-01-01 18:11:38,333 INFO L423 AbstractCegarLoop]: === Iteration 1 === [mainErr1REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr2ENSURES_VIOLATIONMEMORY_LEAK]=== [2019-01-01 18:11:38,339 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-01-01 18:11:38,339 INFO L82 PathProgramCache]: Analyzing trace with hash -1092847368, now seen corresponding path program 1 times [2019-01-01 18:11:38,342 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-01-01 18:11:38,342 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-01-01 18:11:38,398 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-01-01 18:11:38,399 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-01-01 18:11:38,399 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-01-01 18:11:38,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-01-01 18:11:38,524 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 18:11:38,527 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-01-01 18:11:38,527 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-01-01 18:11:38,532 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-01-01 18:11:38,546 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-01-01 18:11:38,546 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-01-01 18:11:38,549 INFO L87 Difference]: Start difference. First operand 20 states. Second operand 3 states. [2019-01-01 18:11:38,603 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-01-01 18:11:38,603 INFO L93 Difference]: Finished difference Result 19 states and 19 transitions. [2019-01-01 18:11:38,604 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-01-01 18:11:38,605 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 7 [2019-01-01 18:11:38,606 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-01-01 18:11:38,616 INFO L225 Difference]: With dead ends: 19 [2019-01-01 18:11:38,617 INFO L226 Difference]: Without dead ends: 16 [2019-01-01 18:11:38,619 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 [2019-01-01 18:11:38,639 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16 states. [2019-01-01 18:11:38,657 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16 to 16. [2019-01-01 18:11:38,658 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2019-01-01 18:11:38,659 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 16 transitions. [2019-01-01 18:11:38,661 INFO L78 Accepts]: Start accepts. Automaton has 16 states and 16 transitions. Word has length 7 [2019-01-01 18:11:38,662 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-01-01 18:11:38,662 INFO L480 AbstractCegarLoop]: Abstraction has 16 states and 16 transitions. [2019-01-01 18:11:38,662 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-01-01 18:11:38,662 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states and 16 transitions. [2019-01-01 18:11:38,663 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2019-01-01 18:11:38,664 INFO L394 BasicCegarLoop]: Found error trace [2019-01-01 18:11:38,664 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2019-01-01 18:11:38,664 INFO L423 AbstractCegarLoop]: === Iteration 2 === [mainErr1REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr2ENSURES_VIOLATIONMEMORY_LEAK]=== [2019-01-01 18:11:38,665 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-01-01 18:11:38,665 INFO L82 PathProgramCache]: Analyzing trace with hash -1092847367, now seen corresponding path program 1 times [2019-01-01 18:11:38,665 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-01-01 18:11:38,666 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-01-01 18:11:38,667 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-01-01 18:11:38,668 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-01-01 18:11:38,668 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-01-01 18:11:38,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-01-01 18:11:38,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-01-01 18:11:38,722 INFO L469 BasicCegarLoop]: Counterexample might be feasible [2019-01-01 18:11:38,749 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 01.01 06:11:38 BoogieIcfgContainer [2019-01-01 18:11:38,750 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-01-01 18:11:38,753 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-01-01 18:11:38,754 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-01-01 18:11:38,754 INFO L276 PluginConnector]: Witness Printer initialized [2019-01-01 18:11:38,754 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.01 06:11:38" (3/4) ... [2019-01-01 18:11:38,757 INFO L138 WitnessPrinter]: Generating witness for reachability counterexample [2019-01-01 18:11:38,812 INFO L145 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2019-01-01 18:11:38,813 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-01-01 18:11:38,814 INFO L168 Benchmark]: Toolchain (without parser) took 1310.40 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 141.6 MB). Free memory was 952.7 MB in the beginning and 1.1 GB in the end (delta: -133.4 MB). Peak memory consumption was 8.2 MB. Max. memory is 11.5 GB. [2019-01-01 18:11:38,816 INFO L168 Benchmark]: CDTParser took 0.16 ms. Allocated memory is still 1.0 GB. Free memory is still 978.2 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-01-01 18:11:38,816 INFO L168 Benchmark]: CACSL2BoogieTranslator took 247.97 ms. Allocated memory is still 1.0 GB. Free memory was 952.7 MB in the beginning and 942.0 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. [2019-01-01 18:11:38,818 INFO L168 Benchmark]: Boogie Preprocessor took 41.27 ms. Allocated memory is still 1.0 GB. Free memory is still 942.0 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-01-01 18:11:38,819 INFO L168 Benchmark]: RCFGBuilder took 344.55 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 141.6 MB). Free memory was 942.0 MB in the beginning and 1.1 GB in the end (delta: -172.7 MB). Peak memory consumption was 24.5 MB. Max. memory is 11.5 GB. [2019-01-01 18:11:38,821 INFO L168 Benchmark]: TraceAbstraction took 612.08 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: 21.9 MB). Peak memory consumption was 21.9 MB. Max. memory is 11.5 GB. [2019-01-01 18:11:38,822 INFO L168 Benchmark]: Witness Printer took 59.36 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 18:11:38,831 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.16 ms. Allocated memory is still 1.0 GB. Free memory is still 978.2 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 247.97 ms. Allocated memory is still 1.0 GB. Free memory was 952.7 MB in the beginning and 942.0 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 41.27 ms. Allocated memory is still 1.0 GB. Free memory is still 942.0 MB. There was no memory consumed. Max. memory is 11.5 GB. * RCFGBuilder took 344.55 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 141.6 MB). Free memory was 942.0 MB in the beginning and 1.1 GB in the end (delta: -172.7 MB). Peak memory consumption was 24.5 MB. Max. memory is 11.5 GB. * TraceAbstraction took 612.08 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: 21.9 MB). Peak memory consumption was 21.9 MB. Max. memory is 11.5 GB. * Witness Printer took 59.36 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: 27]: pointer dereference may fail pointer dereference may fail We found a FailurePath: [L26] struct ppp_comp_stats cstats ; VAL [cstats={1:0}] - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 20 locations, 3 error locations. UNSAFE Result, 0.5s OverallTime, 2 OverallIterations, 1 TraceHistogramMax, 0.0s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 17 SDtfs, 1 SDslu, 10 SDs, 0 SdLazy, 8 SolverSat, 0 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=20occurred 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, 14 NumberOfCodeBlocks, 14 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 6 ConstructedInterpolants, 0 QuantifiedInterpolants, 60 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...