/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/Ultimate.py --spec ../../../trunk/examples/svcomp/properties/valid-memsafety.prp --file ../../../trunk/examples/svcomp/memsafety-ext3/naturalNumbers1_false-valid-deref.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version dea210a9 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 ../../../trunk/examples/svcomp/memsafety-ext3/naturalNumbers1_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 932f76685ed1816d93a388d0ab1addae9c51483a ................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.1.23-dea210a [2018-11-23 15:50:52,312 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-11-23 15:50:52,313 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-11-23 15:50:52,325 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-11-23 15:50:52,325 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-11-23 15:50:52,326 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-11-23 15:50:52,327 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-11-23 15:50:52,329 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-11-23 15:50:52,331 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-11-23 15:50:52,332 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-11-23 15:50:52,333 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-11-23 15:50:52,333 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-11-23 15:50:52,334 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-11-23 15:50:52,335 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-11-23 15:50:52,336 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-11-23 15:50:52,337 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-11-23 15:50:52,338 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-11-23 15:50:52,339 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-11-23 15:50:52,341 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-11-23 15:50:52,343 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-11-23 15:50:52,344 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-11-23 15:50:52,346 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-11-23 15:50:52,348 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-11-23 15:50:52,348 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-11-23 15:50:52,348 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-11-23 15:50:52,350 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-11-23 15:50:52,350 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-11-23 15:50:52,351 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-11-23 15:50:52,352 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-11-23 15:50:52,353 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-11-23 15:50:52,354 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-11-23 15:50:52,354 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-11-23 15:50:52,354 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-11-23 15:50:52,355 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-11-23 15:50:52,356 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-11-23 15:50:52,356 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-11-23 15:50:52,357 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2018-11-23 15:50:52,372 INFO L110 SettingsManager]: Loading preferences was successful [2018-11-23 15:50:52,372 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-11-23 15:50:52,373 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-11-23 15:50:52,373 INFO L133 SettingsManager]: * ... calls to implemented procedures=ONLY_FOR_CONCURRENT_PROGRAMS [2018-11-23 15:50:52,374 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-11-23 15:50:52,374 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-11-23 15:50:52,374 INFO L133 SettingsManager]: * Use SBE=true [2018-11-23 15:50:52,374 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-11-23 15:50:52,374 INFO L133 SettingsManager]: * sizeof long=4 [2018-11-23 15:50:52,375 INFO L133 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2018-11-23 15:50:52,375 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-11-23 15:50:52,375 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-11-23 15:50:52,375 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-11-23 15:50:52,375 INFO L133 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2018-11-23 15:50:52,375 INFO L133 SettingsManager]: * Bitprecise bitfields=true [2018-11-23 15:50:52,376 INFO L133 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2018-11-23 15:50:52,376 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-11-23 15:50:52,376 INFO L133 SettingsManager]: * sizeof long double=12 [2018-11-23 15:50:52,376 INFO L133 SettingsManager]: * Use constant arrays=true [2018-11-23 15:50:52,376 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-11-23 15:50:52,377 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-11-23 15:50:52,377 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-11-23 15:50:52,377 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-11-23 15:50:52,377 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-11-23 15:50:52,377 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-11-23 15:50:52,377 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-11-23 15:50:52,378 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-11-23 15:50:52,378 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-11-23 15:50:52,378 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 -> 932f76685ed1816d93a388d0ab1addae9c51483a [2018-11-23 15:50:52,422 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-11-23 15:50:52,434 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-11-23 15:50:52,437 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-11-23 15:50:52,438 INFO L271 PluginConnector]: Initializing CDTParser... [2018-11-23 15:50:52,439 INFO L276 PluginConnector]: CDTParser initialized [2018-11-23 15:50:52,439 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/memsafety-ext3/naturalNumbers1_false-valid-deref.c [2018-11-23 15:50:52,492 INFO L221 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b4e482388/2a25c1c9c305452c927d42e8426ad044/FLAG225ea4ff4 [2018-11-23 15:50:52,874 INFO L307 CDTParser]: Found 1 translation units. [2018-11-23 15:50:52,874 INFO L161 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/memsafety-ext3/naturalNumbers1_false-valid-deref.c [2018-11-23 15:50:52,879 INFO L355 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b4e482388/2a25c1c9c305452c927d42e8426ad044/FLAG225ea4ff4 [2018-11-23 15:50:52,892 INFO L363 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b4e482388/2a25c1c9c305452c927d42e8426ad044 [2018-11-23 15:50:52,895 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-11-23 15:50:52,896 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-11-23 15:50:52,897 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-11-23 15:50:52,897 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-11-23 15:50:52,901 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-11-23 15:50:52,902 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 03:50:52" (1/1) ... [2018-11-23 15:50:52,905 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@471bccb9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:50:52, skipping insertion in model container [2018-11-23 15:50:52,905 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 03:50:52" (1/1) ... [2018-11-23 15:50:52,913 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-11-23 15:50:52,933 INFO L176 MainTranslator]: Built tables and reachable declarations [2018-11-23 15:50:53,099 INFO L201 PostProcessor]: Analyzing one entry point: main [2018-11-23 15:50:53,110 INFO L191 MainTranslator]: Completed pre-run [2018-11-23 15:50:53,127 INFO L201 PostProcessor]: Analyzing one entry point: main [2018-11-23 15:50:53,141 INFO L195 MainTranslator]: Completed translation [2018-11-23 15:50:53,142 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:50:53 WrapperNode [2018-11-23 15:50:53,142 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-11-23 15:50:53,143 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-11-23 15:50:53,143 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-11-23 15:50:53,143 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-11-23 15:50:53,154 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:50:53" (1/1) ... [2018-11-23 15:50:53,154 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:50:53" (1/1) ... [2018-11-23 15:50:53,163 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:50:53" (1/1) ... [2018-11-23 15:50:53,164 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:50:53" (1/1) ... [2018-11-23 15:50:53,170 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:50:53" (1/1) ... [2018-11-23 15:50:53,174 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:50:53" (1/1) ... [2018-11-23 15:50:53,176 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:50:53" (1/1) ... [2018-11-23 15:50:53,177 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-11-23 15:50:53,178 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-11-23 15:50:53,178 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-11-23 15:50:53,178 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-11-23 15:50:53,179 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:50:53" (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 [2018-11-23 15:50:53,284 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-11-23 15:50:53,284 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-11-23 15:50:53,284 INFO L138 BoogieDeclarations]: Found implementation of procedure areNatural [2018-11-23 15:50:53,284 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-11-23 15:50:53,284 INFO L130 BoogieDeclarations]: Found specification of procedure areNatural [2018-11-23 15:50:53,285 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2018-11-23 15:50:53,285 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-11-23 15:50:53,285 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.alloc [2018-11-23 15:50:53,285 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2018-11-23 15:50:53,285 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2018-11-23 15:50:53,285 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-11-23 15:50:53,285 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-11-23 15:50:53,285 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2018-11-23 15:50:53,455 INFO L275 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-11-23 15:50:53,456 INFO L280 CfgBuilder]: Removed 1 assue(true) statements. [2018-11-23 15:50:53,457 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 03:50:53 BoogieIcfgContainer [2018-11-23 15:50:53,457 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-11-23 15:50:53,458 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-11-23 15:50:53,458 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-11-23 15:50:53,460 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-11-23 15:50:53,461 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.11 03:50:52" (1/3) ... [2018-11-23 15:50:53,462 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@63af1f48 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 03:50:53, skipping insertion in model container [2018-11-23 15:50:53,462 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:50:53" (2/3) ... [2018-11-23 15:50:53,462 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@63af1f48 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 03:50:53, skipping insertion in model container [2018-11-23 15:50:53,462 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 03:50:53" (3/3) ... [2018-11-23 15:50:53,464 INFO L112 eAbstractionObserver]: Analyzing ICFG naturalNumbers1_false-valid-deref.c [2018-11-23 15:50:53,473 INFO L156 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-11-23 15:50:53,479 INFO L168 ceAbstractionStarter]: Appying trace abstraction to program that has 3 error locations. [2018-11-23 15:50:53,493 INFO L257 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2018-11-23 15:50:53,519 INFO L133 ementStrategyFactory]: Using default assertion order modulation [2018-11-23 15:50:53,519 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-11-23 15:50:53,519 INFO L383 AbstractCegarLoop]: Hoare is false [2018-11-23 15:50:53,520 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-11-23 15:50:53,520 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-11-23 15:50:53,520 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-11-23 15:50:53,520 INFO L387 AbstractCegarLoop]: Difference is false [2018-11-23 15:50:53,520 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-11-23 15:50:53,520 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-11-23 15:50:53,537 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states. [2018-11-23 15:50:53,547 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2018-11-23 15:50:53,547 INFO L394 BasicCegarLoop]: Found error trace [2018-11-23 15:50:53,548 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-23 15:50:53,550 INFO L423 AbstractCegarLoop]: === Iteration 1 === [mainErr0ENSURES_VIOLATIONMEMORY_LEAK, areNaturalErr1REQUIRES_VIOLATION, areNaturalErr0REQUIRES_VIOLATION]=== [2018-11-23 15:50:53,555 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-23 15:50:53,555 INFO L82 PathProgramCache]: Analyzing trace with hash -1845664052, now seen corresponding path program 1 times [2018-11-23 15:50:53,559 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-23 15:50:53,559 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-23 15:50:53,606 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 15:50:53,606 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-23 15:50:53,606 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 15:50:53,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-23 15:50:53,735 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-23 15:50:53,738 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-23 15:50:53,738 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-11-23 15:50:53,742 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-11-23 15:50:53,754 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-11-23 15:50:53,754 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-11-23 15:50:53,757 INFO L87 Difference]: Start difference. First operand 22 states. Second operand 5 states. [2018-11-23 15:50:53,868 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-23 15:50:53,869 INFO L93 Difference]: Finished difference Result 21 states and 22 transitions. [2018-11-23 15:50:53,869 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-11-23 15:50:53,870 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 10 [2018-11-23 15:50:53,871 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-23 15:50:53,878 INFO L225 Difference]: With dead ends: 21 [2018-11-23 15:50:53,878 INFO L226 Difference]: Without dead ends: 18 [2018-11-23 15:50:53,880 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2018-11-23 15:50:53,893 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18 states. [2018-11-23 15:50:53,906 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18 to 18. [2018-11-23 15:50:53,907 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2018-11-23 15:50:53,908 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 19 transitions. [2018-11-23 15:50:53,909 INFO L78 Accepts]: Start accepts. Automaton has 18 states and 19 transitions. Word has length 10 [2018-11-23 15:50:53,909 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-23 15:50:53,909 INFO L480 AbstractCegarLoop]: Abstraction has 18 states and 19 transitions. [2018-11-23 15:50:53,909 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-11-23 15:50:53,910 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 19 transitions. [2018-11-23 15:50:53,910 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2018-11-23 15:50:53,910 INFO L394 BasicCegarLoop]: Found error trace [2018-11-23 15:50:53,910 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-23 15:50:53,910 INFO L423 AbstractCegarLoop]: === Iteration 2 === [mainErr0ENSURES_VIOLATIONMEMORY_LEAK, areNaturalErr1REQUIRES_VIOLATION, areNaturalErr0REQUIRES_VIOLATION]=== [2018-11-23 15:50:53,911 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-23 15:50:53,911 INFO L82 PathProgramCache]: Analyzing trace with hash -1845664051, now seen corresponding path program 1 times [2018-11-23 15:50:53,911 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-23 15:50:53,911 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-23 15:50:53,912 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 15:50:53,913 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-23 15:50:53,913 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 15:50:53,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-23 15:50:54,053 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-23 15:50:54,053 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-23 15:50:54,053 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-11-23 15:50:54,055 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-11-23 15:50:54,055 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-11-23 15:50:54,055 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-11-23 15:50:54,056 INFO L87 Difference]: Start difference. First operand 18 states and 19 transitions. Second operand 5 states. [2018-11-23 15:50:54,144 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-23 15:50:54,144 INFO L93 Difference]: Finished difference Result 23 states and 25 transitions. [2018-11-23 15:50:54,145 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-11-23 15:50:54,145 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 10 [2018-11-23 15:50:54,145 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-23 15:50:54,148 INFO L225 Difference]: With dead ends: 23 [2018-11-23 15:50:54,148 INFO L226 Difference]: Without dead ends: 23 [2018-11-23 15:50:54,149 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2018-11-23 15:50:54,149 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2018-11-23 15:50:54,153 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 20. [2018-11-23 15:50:54,153 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2018-11-23 15:50:54,154 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 21 transitions. [2018-11-23 15:50:54,154 INFO L78 Accepts]: Start accepts. Automaton has 20 states and 21 transitions. Word has length 10 [2018-11-23 15:50:54,154 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-23 15:50:54,154 INFO L480 AbstractCegarLoop]: Abstraction has 20 states and 21 transitions. [2018-11-23 15:50:54,154 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-11-23 15:50:54,154 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 21 transitions. [2018-11-23 15:50:54,155 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2018-11-23 15:50:54,155 INFO L394 BasicCegarLoop]: Found error trace [2018-11-23 15:50:54,155 INFO L402 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-23 15:50:54,156 INFO L423 AbstractCegarLoop]: === Iteration 3 === [mainErr0ENSURES_VIOLATIONMEMORY_LEAK, areNaturalErr1REQUIRES_VIOLATION, areNaturalErr0REQUIRES_VIOLATION]=== [2018-11-23 15:50:54,156 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-23 15:50:54,156 INFO L82 PathProgramCache]: Analyzing trace with hash -6453934, now seen corresponding path program 1 times [2018-11-23 15:50:54,156 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-23 15:50:54,156 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-23 15:50:54,157 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 15:50:54,157 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-23 15:50:54,157 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 15:50:54,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-23 15:50:54,466 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-23 15:50:54,467 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-23 15:50:54,467 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-23 15:50:54,478 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-23 15:50:54,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-23 15:50:54,504 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-23 15:50:54,639 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2018-11-23 15:50:54,644 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2018-11-23 15:50:54,646 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-11-23 15:50:54,652 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-11-23 15:50:54,658 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2018-11-23 15:50:54,658 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:15, output treesize:3 [2018-11-23 15:50:54,675 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-23 15:50:54,694 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-11-23 15:50:54,694 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [6] total 11 [2018-11-23 15:50:54,695 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2018-11-23 15:50:54,696 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2018-11-23 15:50:54,696 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=90, Unknown=0, NotChecked=0, Total=110 [2018-11-23 15:50:54,697 INFO L87 Difference]: Start difference. First operand 20 states and 21 transitions. Second operand 11 states. [2018-11-23 15:50:54,930 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-23 15:50:54,930 INFO L93 Difference]: Finished difference Result 16 states and 15 transitions. [2018-11-23 15:50:54,931 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-11-23 15:50:54,931 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 13 [2018-11-23 15:50:54,931 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-23 15:50:54,932 INFO L225 Difference]: With dead ends: 16 [2018-11-23 15:50:54,932 INFO L226 Difference]: Without dead ends: 16 [2018-11-23 15:50:54,933 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=46, Invalid=164, Unknown=0, NotChecked=0, Total=210 [2018-11-23 15:50:54,933 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16 states. [2018-11-23 15:50:54,935 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16 to 16. [2018-11-23 15:50:54,936 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2018-11-23 15:50:54,936 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 15 transitions. [2018-11-23 15:50:54,937 INFO L78 Accepts]: Start accepts. Automaton has 16 states and 15 transitions. Word has length 13 [2018-11-23 15:50:54,937 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-23 15:50:54,937 INFO L480 AbstractCegarLoop]: Abstraction has 16 states and 15 transitions. [2018-11-23 15:50:54,937 INFO L481 AbstractCegarLoop]: Interpolant automaton has 11 states. [2018-11-23 15:50:54,937 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states and 15 transitions. [2018-11-23 15:50:54,938 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2018-11-23 15:50:54,938 INFO L394 BasicCegarLoop]: Found error trace [2018-11-23 15:50:54,938 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-23 15:50:54,939 INFO L423 AbstractCegarLoop]: === Iteration 4 === [mainErr0ENSURES_VIOLATIONMEMORY_LEAK, areNaturalErr1REQUIRES_VIOLATION, areNaturalErr0REQUIRES_VIOLATION]=== [2018-11-23 15:50:54,939 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-23 15:50:54,939 INFO L82 PathProgramCache]: Analyzing trace with hash -1907814666, now seen corresponding path program 1 times [2018-11-23 15:50:54,940 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-23 15:50:54,940 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-23 15:50:54,941 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 15:50:54,941 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-23 15:50:54,941 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 15:50:54,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-23 15:50:55,014 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-23 15:50:55,015 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-23 15:50:55,015 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-11-23 15:50:55,016 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-11-23 15:50:55,016 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-11-23 15:50:55,016 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-11-23 15:50:55,017 INFO L87 Difference]: Start difference. First operand 16 states and 15 transitions. Second operand 4 states. [2018-11-23 15:50:55,043 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-23 15:50:55,044 INFO L93 Difference]: Finished difference Result 15 states and 14 transitions. [2018-11-23 15:50:55,044 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-11-23 15:50:55,044 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 15 [2018-11-23 15:50:55,045 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-23 15:50:55,045 INFO L225 Difference]: With dead ends: 15 [2018-11-23 15:50:55,045 INFO L226 Difference]: Without dead ends: 0 [2018-11-23 15:50:55,046 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-11-23 15:50:55,046 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2018-11-23 15:50:55,046 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2018-11-23 15:50:55,046 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2018-11-23 15:50:55,046 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2018-11-23 15:50:55,047 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 15 [2018-11-23 15:50:55,047 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-23 15:50:55,047 INFO L480 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2018-11-23 15:50:55,047 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-11-23 15:50:55,047 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2018-11-23 15:50:55,047 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2018-11-23 15:50:55,053 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 23.11 03:50:55 BoogieIcfgContainer [2018-11-23 15:50:55,053 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-11-23 15:50:55,053 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2018-11-23 15:50:55,054 INFO L271 PluginConnector]: Initializing Witness Printer... [2018-11-23 15:50:55,054 INFO L276 PluginConnector]: Witness Printer initialized [2018-11-23 15:50:55,054 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 03:50:53" (3/4) ... [2018-11-23 15:50:55,059 INFO L144 WitnessPrinter]: Generating witness for correct program [2018-11-23 15:50:55,067 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure ULTIMATE.init [2018-11-23 15:50:55,068 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure main [2018-11-23 15:50:55,068 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure areNatural [2018-11-23 15:50:55,073 INFO L879 BoogieBacktranslator]: Reduced CFG by removing 15 nodes and edges [2018-11-23 15:50:55,074 INFO L879 BoogieBacktranslator]: Reduced CFG by removing 6 nodes and edges [2018-11-23 15:50:55,074 INFO L879 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2018-11-23 15:50:55,074 INFO L879 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2018-11-23 15:50:55,074 INFO L879 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2018-11-23 15:50:55,118 INFO L145 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2018-11-23 15:50:55,118 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2018-11-23 15:50:55,119 INFO L168 Benchmark]: Toolchain (without parser) took 2223.76 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 149.4 MB). Free memory was 948.6 MB in the beginning and 998.8 MB in the end (delta: -50.2 MB). Peak memory consumption was 99.2 MB. Max. memory is 11.5 GB. [2018-11-23 15:50:55,121 INFO L168 Benchmark]: CDTParser took 0.15 ms. Allocated memory is still 1.0 GB. Free memory is still 978.7 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-11-23 15:50:55,121 INFO L168 Benchmark]: CACSL2BoogieTranslator took 245.00 ms. Allocated memory is still 1.0 GB. Free memory was 948.6 MB in the beginning and 937.9 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. [2018-11-23 15:50:55,122 INFO L168 Benchmark]: Boogie Preprocessor took 34.90 ms. Allocated memory is still 1.0 GB. Free memory was 937.9 MB in the beginning and 932.5 MB in the end (delta: 5.4 MB). Peak memory consumption was 5.4 MB. Max. memory is 11.5 GB. [2018-11-23 15:50:55,122 INFO L168 Benchmark]: RCFGBuilder took 278.98 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 149.4 MB). Free memory was 932.5 MB in the beginning and 1.1 GB in the end (delta: -192.5 MB). Peak memory consumption was 14.7 MB. Max. memory is 11.5 GB. [2018-11-23 15:50:55,123 INFO L168 Benchmark]: TraceAbstraction took 1595.50 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.0 GB in the end (delta: 119.2 MB). Peak memory consumption was 119.2 MB. Max. memory is 11.5 GB. [2018-11-23 15:50:55,123 INFO L168 Benchmark]: Witness Printer took 65.00 ms. Allocated memory is still 1.2 GB. Free memory was 1.0 GB in the beginning and 998.8 MB in the end (delta: 7.0 MB). Peak memory consumption was 7.0 MB. Max. memory is 11.5 GB. [2018-11-23 15:50:55,127 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.15 ms. Allocated memory is still 1.0 GB. Free memory is still 978.7 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 245.00 ms. Allocated memory is still 1.0 GB. Free memory was 948.6 MB in the beginning and 937.9 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 34.90 ms. Allocated memory is still 1.0 GB. Free memory was 937.9 MB in the beginning and 932.5 MB in the end (delta: 5.4 MB). Peak memory consumption was 5.4 MB. Max. memory is 11.5 GB. * RCFGBuilder took 278.98 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 149.4 MB). Free memory was 932.5 MB in the beginning and 1.1 GB in the end (delta: -192.5 MB). Peak memory consumption was 14.7 MB. Max. memory is 11.5 GB. * TraceAbstraction took 1595.50 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.0 GB in the end (delta: 119.2 MB). Peak memory consumption was 119.2 MB. Max. memory is 11.5 GB. * Witness Printer took 65.00 ms. Allocated memory is still 1.2 GB. Free memory was 1.0 GB in the beginning and 998.8 MB in the end (delta: 7.0 MB). Peak memory consumption was 7.0 MB. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 12]: all allocated memory was freed For all program executions holds that all allocated memory was freed at this location - PositiveResult [Line: 4]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 4]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - AllSpecificationsHoldResult: All specifications hold 3 specifications checked. All of them hold - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 22 locations, 3 error locations. SAFE Result, 1.5s OverallTime, 4 OverallIterations, 2 TraceHistogramMax, 0.4s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 47 SDtfs, 51 SDslu, 107 SDs, 0 SdLazy, 115 SolverSat, 12 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 36 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.7s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=22occurred 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, 4 MinimizatonAttempts, 3 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.7s InterpolantComputationTime, 61 NumberOfCodeBlocks, 61 NumberOfCodeBlocksAsserted, 5 NumberOfCheckSat, 56 ConstructedInterpolants, 0 QuantifiedInterpolants, 3140 SizeOfPredicates, 6 NumberOfNonLiveVariables, 76 ConjunctsInSsa, 15 ConjunctsInUnsatCore, 5 InterpolantComputations, 4 PerfectInterpolantSequences, 2/4 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...