./Ultimate.py --spec ../sv-benchmarks/c/properties/valid-memsafety.prp --file ../sv-benchmarks/c/termination-crafted/Ackermann-2.c --full-output -ea --architecture 64bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 8bd4bc60 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx12G -Xms1G -ea -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 ../sv-benchmarks/c/termination-crafted/Ackermann-2.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-64bit-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 64bit --witnessprinter.graph.data.programhash 5ecb2c96c3072d53870105e0fcaf3f74cb197e51 ........................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.1.25-8bd4bc6 [2020-07-29 01:17:43,326 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-07-29 01:17:43,328 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-07-29 01:17:43,340 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-07-29 01:17:43,341 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-07-29 01:17:43,342 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-07-29 01:17:43,343 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-07-29 01:17:43,345 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-07-29 01:17:43,347 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-07-29 01:17:43,348 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-07-29 01:17:43,349 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-07-29 01:17:43,350 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-07-29 01:17:43,351 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-07-29 01:17:43,352 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-07-29 01:17:43,353 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-07-29 01:17:43,354 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-07-29 01:17:43,355 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-07-29 01:17:43,356 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-07-29 01:17:43,358 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-07-29 01:17:43,360 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-07-29 01:17:43,361 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-07-29 01:17:43,363 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-07-29 01:17:43,364 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-07-29 01:17:43,365 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-07-29 01:17:43,367 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-07-29 01:17:43,367 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-07-29 01:17:43,368 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-07-29 01:17:43,369 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-07-29 01:17:43,369 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-07-29 01:17:43,370 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-07-29 01:17:43,372 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-07-29 01:17:43,373 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-07-29 01:17:43,374 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-07-29 01:17:43,376 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-07-29 01:17:43,377 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-07-29 01:17:43,378 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-07-29 01:17:43,380 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-07-29 01:17:43,381 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-07-29 01:17:43,381 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-07-29 01:17:43,382 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-07-29 01:17:43,383 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-07-29 01:17:43,385 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-64bit-Automizer_Default.epf [2020-07-29 01:17:43,407 INFO L113 SettingsManager]: Loading preferences was successful [2020-07-29 01:17:43,408 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-07-29 01:17:43,409 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-07-29 01:17:43,410 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-07-29 01:17:43,410 INFO L138 SettingsManager]: * Use SBE=true [2020-07-29 01:17:43,410 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-07-29 01:17:43,411 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2020-07-29 01:17:43,411 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-07-29 01:17:43,411 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-07-29 01:17:43,411 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2020-07-29 01:17:43,412 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2020-07-29 01:17:43,413 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2020-07-29 01:17:43,413 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-07-29 01:17:43,413 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2020-07-29 01:17:43,414 INFO L138 SettingsManager]: * Use constant arrays=true [2020-07-29 01:17:43,414 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-07-29 01:17:43,414 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-07-29 01:17:43,415 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-07-29 01:17:43,415 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-07-29 01:17:43,415 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-07-29 01:17:43,415 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-07-29 01:17:43,416 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-07-29 01:17:43,416 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-07-29 01:17:43,416 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-29 01:17:43,417 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-07-29 01:17:43,417 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode 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 -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 5ecb2c96c3072d53870105e0fcaf3f74cb197e51 [2020-07-29 01:17:43,753 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-07-29 01:17:43,766 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-07-29 01:17:43,770 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-07-29 01:17:43,771 INFO L271 PluginConnector]: Initializing CDTParser... [2020-07-29 01:17:43,772 INFO L275 PluginConnector]: CDTParser initialized [2020-07-29 01:17:43,772 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/termination-crafted/Ackermann-2.c [2020-07-29 01:17:43,831 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/93e11c6dc/a44d684ad37043978745218a232bd822/FLAG93b86ad9f [2020-07-29 01:17:44,257 INFO L306 CDTParser]: Found 1 translation units. [2020-07-29 01:17:44,260 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/termination-crafted/Ackermann-2.c [2020-07-29 01:17:44,267 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/93e11c6dc/a44d684ad37043978745218a232bd822/FLAG93b86ad9f [2020-07-29 01:17:44,654 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/93e11c6dc/a44d684ad37043978745218a232bd822 [2020-07-29 01:17:44,658 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-07-29 01:17:44,661 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2020-07-29 01:17:44,662 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-07-29 01:17:44,662 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-07-29 01:17:44,666 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-07-29 01:17:44,668 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.07 01:17:44" (1/1) ... [2020-07-29 01:17:44,670 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@f8533d3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.07 01:17:44, skipping insertion in model container [2020-07-29 01:17:44,671 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.07 01:17:44" (1/1) ... [2020-07-29 01:17:44,678 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-07-29 01:17:44,697 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-07-29 01:17:44,870 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-29 01:17:44,875 INFO L203 MainTranslator]: Completed pre-run [2020-07-29 01:17:44,898 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-29 01:17:44,912 INFO L208 MainTranslator]: Completed translation [2020-07-29 01:17:44,912 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.07 01:17:44 WrapperNode [2020-07-29 01:17:44,912 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-07-29 01:17:44,913 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-07-29 01:17:44,913 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-07-29 01:17:44,913 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-07-29 01:17:44,923 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.07 01:17:44" (1/1) ... [2020-07-29 01:17:44,923 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.07 01:17:44" (1/1) ... [2020-07-29 01:17:44,928 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.07 01:17:44" (1/1) ... [2020-07-29 01:17:44,928 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.07 01:17:44" (1/1) ... [2020-07-29 01:17:44,933 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.07 01:17:44" (1/1) ... [2020-07-29 01:17:44,935 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.07 01:17:44" (1/1) ... [2020-07-29 01:17:44,936 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.07 01:17:44" (1/1) ... [2020-07-29 01:17:44,938 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-07-29 01:17:44,938 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-07-29 01:17:44,939 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-07-29 01:17:44,939 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-07-29 01:17:44,940 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.07 01:17:44" (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 [2020-07-29 01:17:45,058 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-07-29 01:17:45,059 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-07-29 01:17:45,059 INFO L138 BoogieDeclarations]: Found implementation of procedure Ack [2020-07-29 01:17:45,059 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-07-29 01:17:45,059 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-07-29 01:17:45,060 INFO L130 BoogieDeclarations]: Found specification of procedure Ack [2020-07-29 01:17:45,060 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-07-29 01:17:45,060 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-07-29 01:17:45,060 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-07-29 01:17:45,334 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-07-29 01:17:45,334 INFO L295 CfgBuilder]: Removed 0 assume(true) statements. [2020-07-29 01:17:45,338 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.07 01:17:45 BoogieIcfgContainer [2020-07-29 01:17:45,338 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-07-29 01:17:45,339 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-07-29 01:17:45,339 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-07-29 01:17:45,342 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-07-29 01:17:45,343 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.07 01:17:44" (1/3) ... [2020-07-29 01:17:45,343 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5ddc018e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.07 01:17:45, skipping insertion in model container [2020-07-29 01:17:45,344 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.07 01:17:44" (2/3) ... [2020-07-29 01:17:45,344 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5ddc018e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.07 01:17:45, skipping insertion in model container [2020-07-29 01:17:45,344 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.07 01:17:45" (3/3) ... [2020-07-29 01:17:45,346 INFO L109 eAbstractionObserver]: Analyzing ICFG Ackermann-2.c [2020-07-29 01:17:45,359 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-07-29 01:17:45,366 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 0 error locations. [2020-07-29 01:17:45,384 INFO L251 AbstractCegarLoop]: Starting to check reachability of 0 error locations. [2020-07-29 01:17:45,406 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-07-29 01:17:45,407 INFO L376 AbstractCegarLoop]: Hoare is false [2020-07-29 01:17:45,407 INFO L377 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-07-29 01:17:45,407 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-07-29 01:17:45,408 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-07-29 01:17:45,408 INFO L380 AbstractCegarLoop]: Difference is false [2020-07-29 01:17:45,408 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-07-29 01:17:45,408 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-07-29 01:17:45,423 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states. [2020-07-29 01:17:45,435 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-07-29 01:17:45,439 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 29.07 01:17:45 BoogieIcfgContainer [2020-07-29 01:17:45,439 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-07-29 01:17:45,440 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-07-29 01:17:45,440 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-07-29 01:17:45,440 INFO L275 PluginConnector]: Witness Printer initialized [2020-07-29 01:17:45,441 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.07 01:17:45" (3/4) ... [2020-07-29 01:17:45,447 INFO L137 WitnessPrinter]: Generating witness for correct program [2020-07-29 01:17:45,454 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure ULTIMATE.init [2020-07-29 01:17:45,454 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure Ack [2020-07-29 01:17:45,455 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure main [2020-07-29 01:17:45,461 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 7 nodes and edges [2020-07-29 01:17:45,462 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2020-07-29 01:17:45,462 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-07-29 01:17:45,520 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2020-07-29 01:17:45,520 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-07-29 01:17:45,523 INFO L168 Benchmark]: Toolchain (without parser) took 863.37 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 71.8 MB). Free memory was 961.6 MB in the beginning and 1.0 GB in the end (delta: -70.7 MB). Peak memory consumption was 1.1 MB. Max. memory is 11.5 GB. [2020-07-29 01:17:45,524 INFO L168 Benchmark]: CDTParser took 0.26 ms. Allocated memory is still 1.0 GB. Free memory is still 987.1 MB. There was no memory consumed. Max. memory is 11.5 GB. [2020-07-29 01:17:45,525 INFO L168 Benchmark]: CACSL2BoogieTranslator took 250.53 ms. Allocated memory is still 1.0 GB. Free memory was 961.6 MB in the beginning and 950.8 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. [2020-07-29 01:17:45,525 INFO L168 Benchmark]: Boogie Preprocessor took 25.30 ms. Allocated memory is still 1.0 GB. Free memory is still 950.8 MB. There was no memory consumed. Max. memory is 11.5 GB. [2020-07-29 01:17:45,526 INFO L168 Benchmark]: RCFGBuilder took 399.59 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 71.8 MB). Free memory was 950.8 MB in the beginning and 1.0 GB in the end (delta: -88.4 MB). Peak memory consumption was 9.8 MB. Max. memory is 11.5 GB. [2020-07-29 01:17:45,527 INFO L168 Benchmark]: TraceAbstraction took 100.30 ms. Allocated memory is still 1.1 GB. Free memory was 1.0 GB in the beginning and 1.0 GB in the end (delta: 7.0 MB). Peak memory consumption was 7.0 MB. Max. memory is 11.5 GB. [2020-07-29 01:17:45,528 INFO L168 Benchmark]: Witness Printer took 80.42 ms. Allocated memory is still 1.1 GB. Free memory is still 1.0 GB. There was no memory consumed. Max. memory is 11.5 GB. [2020-07-29 01:17:45,531 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - AssertionsEnabledResult: Assertions are enabled Assertions are enabled - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.26 ms. Allocated memory is still 1.0 GB. Free memory is still 987.1 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 250.53 ms. Allocated memory is still 1.0 GB. Free memory was 961.6 MB in the beginning and 950.8 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 25.30 ms. Allocated memory is still 1.0 GB. Free memory is still 950.8 MB. There was no memory consumed. Max. memory is 11.5 GB. * RCFGBuilder took 399.59 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 71.8 MB). Free memory was 950.8 MB in the beginning and 1.0 GB in the end (delta: -88.4 MB). Peak memory consumption was 9.8 MB. Max. memory is 11.5 GB. * TraceAbstraction took 100.30 ms. Allocated memory is still 1.1 GB. Free memory was 1.0 GB in the beginning and 1.0 GB in the end (delta: 7.0 MB). Peak memory consumption was 7.0 MB. Max. memory is 11.5 GB. * Witness Printer took 80.42 ms. Allocated memory is still 1.1 GB. Free memory is still 1.0 GB. There was no memory consumed. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - AllSpecificationsHoldResult: All specifications hold We were not able to verify any specifiation because the program does not contain any specification. - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 25 locations, 0 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 0.0s, OverallIterations: 0, TraceHistogramMax: 0, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: No data available, PredicateUnifierStatistics: No data available, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=25occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...