./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/ldv-memsafety/memleaks_test21_true-valid-memsafety_true-termination.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 635dfa2a Calling Ultimate with: java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/working_dir_daf94fe4-caa7-43ed-8b0b-fef76cc61d3e/bin-2019/utaipan/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/working_dir_daf94fe4-caa7-43ed-8b0b-fef76cc61d3e/bin-2019/utaipan/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/working_dir_daf94fe4-caa7-43ed-8b0b-fef76cc61d3e/bin-2019/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/working_dir_daf94fe4-caa7-43ed-8b0b-fef76cc61d3e/bin-2019/utaipan/config/TaipanMemDerefMemtrack.xml -i ../../sv-benchmarks/c/ldv-memsafety/memleaks_test21_true-valid-memsafety_true-termination.i -s /tmp/vcloud-vcloud-master/worker/working_dir_daf94fe4-caa7-43ed-8b0b-fef76cc61d3e/bin-2019/utaipan/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/working_dir_daf94fe4-caa7-43ed-8b0b-fef76cc61d3e/bin-2019/utaipan --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 Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash be9287769af70383956c156e3adcbcd15aa73b06 ...................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.1.23-635dfa2 [2018-12-09 03:07:46,490 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-12-09 03:07:46,491 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-12-09 03:07:46,497 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-12-09 03:07:46,497 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-12-09 03:07:46,498 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-12-09 03:07:46,498 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-12-09 03:07:46,499 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-12-09 03:07:46,500 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-12-09 03:07:46,500 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-12-09 03:07:46,501 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-12-09 03:07:46,501 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-12-09 03:07:46,501 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-12-09 03:07:46,502 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-12-09 03:07:46,502 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-12-09 03:07:46,503 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-12-09 03:07:46,503 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-12-09 03:07:46,504 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-12-09 03:07:46,505 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-12-09 03:07:46,505 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-12-09 03:07:46,506 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-12-09 03:07:46,507 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-12-09 03:07:46,508 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-12-09 03:07:46,508 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-12-09 03:07:46,508 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-12-09 03:07:46,508 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-12-09 03:07:46,509 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-12-09 03:07:46,509 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-12-09 03:07:46,510 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-12-09 03:07:46,510 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-12-09 03:07:46,510 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-12-09 03:07:46,511 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-12-09 03:07:46,511 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-12-09 03:07:46,511 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-12-09 03:07:46,512 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-12-09 03:07:46,512 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-12-09 03:07:46,512 INFO L98 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/working_dir_daf94fe4-caa7-43ed-8b0b-fef76cc61d3e/bin-2019/utaipan/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Default.epf [2018-12-09 03:07:46,519 INFO L110 SettingsManager]: Loading preferences was successful [2018-12-09 03:07:46,520 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-12-09 03:07:46,520 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-12-09 03:07:46,520 INFO L133 SettingsManager]: * ... calls to implemented procedures=ONLY_FOR_CONCURRENT_PROGRAMS [2018-12-09 03:07:46,520 INFO L133 SettingsManager]: * User list type=DISABLED [2018-12-09 03:07:46,521 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-12-09 03:07:46,521 INFO L133 SettingsManager]: * Explicit value domain=true [2018-12-09 03:07:46,521 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-12-09 03:07:46,521 INFO L133 SettingsManager]: * Octagon Domain=false [2018-12-09 03:07:46,521 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-12-09 03:07:46,521 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-12-09 03:07:46,521 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-12-09 03:07:46,521 INFO L133 SettingsManager]: * Interval Domain=false [2018-12-09 03:07:46,522 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-12-09 03:07:46,522 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-12-09 03:07:46,522 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-12-09 03:07:46,522 INFO L133 SettingsManager]: * sizeof long=4 [2018-12-09 03:07:46,522 INFO L133 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2018-12-09 03:07:46,522 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-12-09 03:07:46,523 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-12-09 03:07:46,523 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-12-09 03:07:46,523 INFO L133 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2018-12-09 03:07:46,523 INFO L133 SettingsManager]: * Bitprecise bitfields=true [2018-12-09 03:07:46,523 INFO L133 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2018-12-09 03:07:46,523 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-12-09 03:07:46,523 INFO L133 SettingsManager]: * sizeof long double=12 [2018-12-09 03:07:46,524 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-12-09 03:07:46,524 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-12-09 03:07:46,524 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-12-09 03:07:46,524 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-12-09 03:07:46,524 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-12-09 03:07:46,524 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-12-09 03:07:46,524 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-12-09 03:07:46,524 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-12-09 03:07:46,525 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-12-09 03:07:46,525 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-12-09 03:07:46,525 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES 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 -> /tmp/vcloud-vcloud-master/worker/working_dir_daf94fe4-caa7-43ed-8b0b-fef76cc61d3e/bin-2019/utaipan 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 -> Taipan 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 -> be9287769af70383956c156e3adcbcd15aa73b06 [2018-12-09 03:07:46,543 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-12-09 03:07:46,552 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-12-09 03:07:46,555 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-12-09 03:07:46,556 INFO L271 PluginConnector]: Initializing CDTParser... [2018-12-09 03:07:46,556 INFO L276 PluginConnector]: CDTParser initialized [2018-12-09 03:07:46,557 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/working_dir_daf94fe4-caa7-43ed-8b0b-fef76cc61d3e/bin-2019/utaipan/../../sv-benchmarks/c/ldv-memsafety/memleaks_test21_true-valid-memsafety_true-termination.i [2018-12-09 03:07:46,599 INFO L221 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_daf94fe4-caa7-43ed-8b0b-fef76cc61d3e/bin-2019/utaipan/data/d68b1274a/e4919c9336cb4ccf97f64171f999bdb2/FLAG673621e71 [2018-12-09 03:07:47,105 INFO L307 CDTParser]: Found 1 translation units. [2018-12-09 03:07:47,105 INFO L161 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/working_dir_daf94fe4-caa7-43ed-8b0b-fef76cc61d3e/sv-benchmarks/c/ldv-memsafety/memleaks_test21_true-valid-memsafety_true-termination.i [2018-12-09 03:07:47,113 INFO L355 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_daf94fe4-caa7-43ed-8b0b-fef76cc61d3e/bin-2019/utaipan/data/d68b1274a/e4919c9336cb4ccf97f64171f999bdb2/FLAG673621e71 [2018-12-09 03:07:47,627 INFO L363 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/working_dir_daf94fe4-caa7-43ed-8b0b-fef76cc61d3e/bin-2019/utaipan/data/d68b1274a/e4919c9336cb4ccf97f64171f999bdb2 [2018-12-09 03:07:47,629 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-12-09 03:07:47,630 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2018-12-09 03:07:47,631 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-12-09 03:07:47,631 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-12-09 03:07:47,633 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-12-09 03:07:47,633 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.12 03:07:47" (1/1) ... [2018-12-09 03:07:47,635 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@166eeb29 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 03:07:47, skipping insertion in model container [2018-12-09 03:07:47,635 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.12 03:07:47" (1/1) ... [2018-12-09 03:07:47,641 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-12-09 03:07:47,668 INFO L176 MainTranslator]: Built tables and reachable declarations [2018-12-09 03:07:47,915 INFO L203 PostProcessor]: Analyzing one entry point: main [2018-12-09 03:07:47,925 INFO L191 MainTranslator]: Completed pre-run [2018-12-09 03:07:47,957 INFO L203 PostProcessor]: Analyzing one entry point: main [2018-12-09 03:07:47,988 INFO L195 MainTranslator]: Completed translation [2018-12-09 03:07:47,988 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 03:07:47 WrapperNode [2018-12-09 03:07:47,988 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-12-09 03:07:47,989 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-12-09 03:07:47,989 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-12-09 03:07:47,989 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-12-09 03:07:47,994 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 03:07:47" (1/1) ... [2018-12-09 03:07:48,005 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 03:07:47" (1/1) ... [2018-12-09 03:07:48,010 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-12-09 03:07:48,010 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-12-09 03:07:48,010 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-12-09 03:07:48,010 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-12-09 03:07:48,016 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 03:07:47" (1/1) ... [2018-12-09 03:07:48,016 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 03:07:47" (1/1) ... [2018-12-09 03:07:48,017 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 03:07:47" (1/1) ... [2018-12-09 03:07:48,017 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 03:07:47" (1/1) ... [2018-12-09 03:07:48,021 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 03:07:47" (1/1) ... [2018-12-09 03:07:48,022 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 03:07:47" (1/1) ... [2018-12-09 03:07:48,023 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 03:07:47" (1/1) ... [2018-12-09 03:07:48,024 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-12-09 03:07:48,024 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-12-09 03:07:48,024 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-12-09 03:07:48,024 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-12-09 03:07:48,024 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 03:07:47" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_daf94fe4-caa7-43ed-8b0b-fef76cc61d3e/bin-2019/utaipan/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 [2018-12-09 03:07:48,055 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.alloc [2018-12-09 03:07:48,055 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2018-12-09 03:07:48,055 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2018-12-09 03:07:48,056 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-12-09 03:07:48,056 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-12-09 03:07:48,056 INFO L130 BoogieDeclarations]: Found specification of procedure alloc_21 [2018-12-09 03:07:48,056 INFO L138 BoogieDeclarations]: Found implementation of procedure alloc_21 [2018-12-09 03:07:48,056 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-12-09 03:07:48,056 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-12-09 03:07:48,056 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2018-12-09 03:07:48,056 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2018-12-09 03:07:48,056 INFO L130 BoogieDeclarations]: Found specification of procedure entry_point [2018-12-09 03:07:48,057 INFO L138 BoogieDeclarations]: Found implementation of procedure entry_point [2018-12-09 03:07:48,057 INFO L130 BoogieDeclarations]: Found specification of procedure free_21 [2018-12-09 03:07:48,057 INFO L138 BoogieDeclarations]: Found implementation of procedure free_21 [2018-12-09 03:07:48,057 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-12-09 03:07:48,057 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-12-09 03:07:48,187 INFO L275 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-12-09 03:07:48,187 INFO L280 CfgBuilder]: Removed 0 assue(true) statements. [2018-12-09 03:07:48,187 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.12 03:07:48 BoogieIcfgContainer [2018-12-09 03:07:48,187 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-12-09 03:07:48,188 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-12-09 03:07:48,188 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-12-09 03:07:48,189 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-12-09 03:07:48,190 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 09.12 03:07:47" (1/3) ... [2018-12-09 03:07:48,190 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4da166c9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.12 03:07:48, skipping insertion in model container [2018-12-09 03:07:48,190 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 03:07:47" (2/3) ... [2018-12-09 03:07:48,190 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4da166c9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.12 03:07:48, skipping insertion in model container [2018-12-09 03:07:48,190 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.12 03:07:48" (3/3) ... [2018-12-09 03:07:48,191 INFO L112 eAbstractionObserver]: Analyzing ICFG memleaks_test21_true-valid-memsafety_true-termination.i [2018-12-09 03:07:48,197 INFO L156 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-12-09 03:07:48,201 INFO L168 ceAbstractionStarter]: Appying trace abstraction to program that has 3 error locations. [2018-12-09 03:07:48,209 INFO L257 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2018-12-09 03:07:48,223 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-12-09 03:07:48,223 INFO L383 AbstractCegarLoop]: Hoare is false [2018-12-09 03:07:48,223 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-12-09 03:07:48,223 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-12-09 03:07:48,223 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-12-09 03:07:48,223 INFO L387 AbstractCegarLoop]: Difference is false [2018-12-09 03:07:48,224 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-12-09 03:07:48,224 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-12-09 03:07:48,231 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states. [2018-12-09 03:07:48,236 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2018-12-09 03:07:48,237 INFO L394 BasicCegarLoop]: Found error trace [2018-12-09 03:07:48,237 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-09 03:07:48,238 INFO L423 AbstractCegarLoop]: === Iteration 1 === [free_21Err0ASSERT_VIOLATIONMEMORY_FREE, free_21Err1ASSERT_VIOLATIONMEMORY_FREE, mainErr0ENSURES_VIOLATIONMEMORY_LEAK]=== [2018-12-09 03:07:48,241 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-09 03:07:48,242 INFO L82 PathProgramCache]: Analyzing trace with hash -1919665527, now seen corresponding path program 1 times [2018-12-09 03:07:48,243 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-12-09 03:07:48,274 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-09 03:07:48,275 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-09 03:07:48,275 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-09 03:07:48,275 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-12-09 03:07:48,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-09 03:07:48,464 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-09 03:07:48,466 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-12-09 03:07:48,466 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2018-12-09 03:07:48,466 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-12-09 03:07:48,469 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2018-12-09 03:07:48,477 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2018-12-09 03:07:48,478 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=91, Unknown=0, NotChecked=0, Total=110 [2018-12-09 03:07:48,479 INFO L87 Difference]: Start difference. First operand 33 states. Second operand 11 states. [2018-12-09 03:07:48,577 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-09 03:07:48,577 INFO L93 Difference]: Finished difference Result 48 states and 50 transitions. [2018-12-09 03:07:48,578 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2018-12-09 03:07:48,579 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 21 [2018-12-09 03:07:48,579 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-09 03:07:48,588 INFO L225 Difference]: With dead ends: 48 [2018-12-09 03:07:48,588 INFO L226 Difference]: Without dead ends: 45 [2018-12-09 03:07:48,589 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=33, Invalid=149, Unknown=0, NotChecked=0, Total=182 [2018-12-09 03:07:48,602 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45 states. [2018-12-09 03:07:48,612 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45 to 40. [2018-12-09 03:07:48,613 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 40 states. [2018-12-09 03:07:48,614 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 43 transitions. [2018-12-09 03:07:48,615 INFO L78 Accepts]: Start accepts. Automaton has 40 states and 43 transitions. Word has length 21 [2018-12-09 03:07:48,615 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-09 03:07:48,615 INFO L480 AbstractCegarLoop]: Abstraction has 40 states and 43 transitions. [2018-12-09 03:07:48,615 INFO L481 AbstractCegarLoop]: Interpolant automaton has 11 states. [2018-12-09 03:07:48,616 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 43 transitions. [2018-12-09 03:07:48,616 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2018-12-09 03:07:48,616 INFO L394 BasicCegarLoop]: Found error trace [2018-12-09 03:07:48,616 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-09 03:07:48,617 INFO L423 AbstractCegarLoop]: === Iteration 2 === [free_21Err0ASSERT_VIOLATIONMEMORY_FREE, free_21Err1ASSERT_VIOLATIONMEMORY_FREE, mainErr0ENSURES_VIOLATIONMEMORY_LEAK]=== [2018-12-09 03:07:48,617 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-09 03:07:48,617 INFO L82 PathProgramCache]: Analyzing trace with hash -176855192, now seen corresponding path program 1 times [2018-12-09 03:07:48,617 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-12-09 03:07:48,618 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-09 03:07:48,618 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-09 03:07:48,619 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-09 03:07:48,619 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-12-09 03:07:48,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-09 03:07:48,655 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-09 03:07:48,656 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-12-09 03:07:48,656 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-12-09 03:07:48,656 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-12-09 03:07:48,657 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-12-09 03:07:48,657 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-12-09 03:07:48,657 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-12-09 03:07:48,657 INFO L87 Difference]: Start difference. First operand 40 states and 43 transitions. Second operand 5 states. [2018-12-09 03:07:48,664 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-09 03:07:48,664 INFO L93 Difference]: Finished difference Result 46 states and 49 transitions. [2018-12-09 03:07:48,665 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-12-09 03:07:48,665 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 21 [2018-12-09 03:07:48,665 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-09 03:07:48,665 INFO L225 Difference]: With dead ends: 46 [2018-12-09 03:07:48,665 INFO L226 Difference]: Without dead ends: 46 [2018-12-09 03:07:48,666 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-12-09 03:07:48,666 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46 states. [2018-12-09 03:07:48,668 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46 to 44. [2018-12-09 03:07:48,669 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 44 states. [2018-12-09 03:07:48,669 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 47 transitions. [2018-12-09 03:07:48,669 INFO L78 Accepts]: Start accepts. Automaton has 44 states and 47 transitions. Word has length 21 [2018-12-09 03:07:48,670 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-09 03:07:48,670 INFO L480 AbstractCegarLoop]: Abstraction has 44 states and 47 transitions. [2018-12-09 03:07:48,670 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-12-09 03:07:48,670 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states and 47 transitions. [2018-12-09 03:07:48,670 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2018-12-09 03:07:48,670 INFO L394 BasicCegarLoop]: Found error trace [2018-12-09 03:07:48,671 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-09 03:07:48,671 INFO L423 AbstractCegarLoop]: === Iteration 3 === [free_21Err0ASSERT_VIOLATIONMEMORY_FREE, free_21Err1ASSERT_VIOLATIONMEMORY_FREE, mainErr0ENSURES_VIOLATIONMEMORY_LEAK]=== [2018-12-09 03:07:48,671 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-09 03:07:48,671 INFO L82 PathProgramCache]: Analyzing trace with hash -47772473, now seen corresponding path program 1 times [2018-12-09 03:07:48,671 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-12-09 03:07:48,672 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-09 03:07:48,672 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-09 03:07:48,672 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-09 03:07:48,673 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-12-09 03:07:48,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-09 03:07:48,719 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-09 03:07:48,719 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-12-09 03:07:48,719 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2018-12-09 03:07:48,719 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-12-09 03:07:48,719 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-12-09 03:07:48,719 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-12-09 03:07:48,719 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2018-12-09 03:07:48,720 INFO L87 Difference]: Start difference. First operand 44 states and 47 transitions. Second operand 7 states. [2018-12-09 03:07:48,738 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-09 03:07:48,738 INFO L93 Difference]: Finished difference Result 43 states and 44 transitions. [2018-12-09 03:07:48,739 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-12-09 03:07:48,739 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 21 [2018-12-09 03:07:48,739 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-09 03:07:48,739 INFO L225 Difference]: With dead ends: 43 [2018-12-09 03:07:48,739 INFO L226 Difference]: Without dead ends: 43 [2018-12-09 03:07:48,740 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2018-12-09 03:07:48,740 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43 states. [2018-12-09 03:07:48,742 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43 to 41. [2018-12-09 03:07:48,742 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 41 states. [2018-12-09 03:07:48,742 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 42 transitions. [2018-12-09 03:07:48,742 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 42 transitions. Word has length 21 [2018-12-09 03:07:48,742 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-09 03:07:48,742 INFO L480 AbstractCegarLoop]: Abstraction has 41 states and 42 transitions. [2018-12-09 03:07:48,743 INFO L481 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-12-09 03:07:48,743 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 42 transitions. [2018-12-09 03:07:48,743 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2018-12-09 03:07:48,743 INFO L394 BasicCegarLoop]: Found error trace [2018-12-09 03:07:48,743 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-09 03:07:48,743 INFO L423 AbstractCegarLoop]: === Iteration 4 === [free_21Err0ASSERT_VIOLATIONMEMORY_FREE, free_21Err1ASSERT_VIOLATIONMEMORY_FREE, mainErr0ENSURES_VIOLATIONMEMORY_LEAK]=== [2018-12-09 03:07:48,744 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-09 03:07:48,744 INFO L82 PathProgramCache]: Analyzing trace with hash 619910844, now seen corresponding path program 1 times [2018-12-09 03:07:48,744 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-12-09 03:07:48,745 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-09 03:07:48,745 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-09 03:07:48,745 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-09 03:07:48,745 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-12-09 03:07:48,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-09 03:07:48,801 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-09 03:07:48,801 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-12-09 03:07:48,801 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2018-12-09 03:07:48,801 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-12-09 03:07:48,802 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2018-12-09 03:07:48,802 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2018-12-09 03:07:48,802 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=91, Unknown=0, NotChecked=0, Total=110 [2018-12-09 03:07:48,802 INFO L87 Difference]: Start difference. First operand 41 states and 42 transitions. Second operand 11 states. [2018-12-09 03:07:48,878 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-09 03:07:48,879 INFO L93 Difference]: Finished difference Result 49 states and 51 transitions. [2018-12-09 03:07:48,879 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2018-12-09 03:07:48,879 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 22 [2018-12-09 03:07:48,879 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-09 03:07:48,880 INFO L225 Difference]: With dead ends: 49 [2018-12-09 03:07:48,880 INFO L226 Difference]: Without dead ends: 49 [2018-12-09 03:07:48,880 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=33, Invalid=149, Unknown=0, NotChecked=0, Total=182 [2018-12-09 03:07:48,880 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49 states. [2018-12-09 03:07:48,884 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49 to 49. [2018-12-09 03:07:48,884 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 49 states. [2018-12-09 03:07:48,885 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49 states to 49 states and 51 transitions. [2018-12-09 03:07:48,885 INFO L78 Accepts]: Start accepts. Automaton has 49 states and 51 transitions. Word has length 22 [2018-12-09 03:07:48,885 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-09 03:07:48,885 INFO L480 AbstractCegarLoop]: Abstraction has 49 states and 51 transitions. [2018-12-09 03:07:48,885 INFO L481 AbstractCegarLoop]: Interpolant automaton has 11 states. [2018-12-09 03:07:48,885 INFO L276 IsEmpty]: Start isEmpty. Operand 49 states and 51 transitions. [2018-12-09 03:07:48,886 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2018-12-09 03:07:48,886 INFO L394 BasicCegarLoop]: Found error trace [2018-12-09 03:07:48,886 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-09 03:07:48,886 INFO L423 AbstractCegarLoop]: === Iteration 5 === [free_21Err0ASSERT_VIOLATIONMEMORY_FREE, free_21Err1ASSERT_VIOLATIONMEMORY_FREE, mainErr0ENSURES_VIOLATIONMEMORY_LEAK]=== [2018-12-09 03:07:48,886 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-09 03:07:48,886 INFO L82 PathProgramCache]: Analyzing trace with hash 326507837, now seen corresponding path program 1 times [2018-12-09 03:07:48,886 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-12-09 03:07:48,887 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-09 03:07:48,887 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-09 03:07:48,887 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-09 03:07:48,888 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-12-09 03:07:48,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-09 03:07:48,912 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-09 03:07:48,912 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-12-09 03:07:48,912 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-12-09 03:07:48,912 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-12-09 03:07:48,912 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-12-09 03:07:48,912 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-12-09 03:07:48,913 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-12-09 03:07:48,913 INFO L87 Difference]: Start difference. First operand 49 states and 51 transitions. Second operand 5 states. [2018-12-09 03:07:48,920 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-09 03:07:48,920 INFO L93 Difference]: Finished difference Result 40 states and 40 transitions. [2018-12-09 03:07:48,920 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-12-09 03:07:48,920 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 22 [2018-12-09 03:07:48,921 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-09 03:07:48,921 INFO L225 Difference]: With dead ends: 40 [2018-12-09 03:07:48,921 INFO L226 Difference]: Without dead ends: 40 [2018-12-09 03:07:48,921 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-12-09 03:07:48,921 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40 states. [2018-12-09 03:07:48,923 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40 to 40. [2018-12-09 03:07:48,923 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 40 states. [2018-12-09 03:07:48,924 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 40 transitions. [2018-12-09 03:07:48,924 INFO L78 Accepts]: Start accepts. Automaton has 40 states and 40 transitions. Word has length 22 [2018-12-09 03:07:48,924 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-09 03:07:48,924 INFO L480 AbstractCegarLoop]: Abstraction has 40 states and 40 transitions. [2018-12-09 03:07:48,924 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-12-09 03:07:48,924 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 40 transitions. [2018-12-09 03:07:48,925 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2018-12-09 03:07:48,925 INFO L394 BasicCegarLoop]: Found error trace [2018-12-09 03:07:48,925 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-09 03:07:48,925 INFO L423 AbstractCegarLoop]: === Iteration 6 === [free_21Err0ASSERT_VIOLATIONMEMORY_FREE, free_21Err1ASSERT_VIOLATIONMEMORY_FREE, mainErr0ENSURES_VIOLATIONMEMORY_LEAK]=== [2018-12-09 03:07:48,925 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-09 03:07:48,925 INFO L82 PathProgramCache]: Analyzing trace with hash -798267408, now seen corresponding path program 1 times [2018-12-09 03:07:48,925 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-12-09 03:07:48,926 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-09 03:07:48,926 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-09 03:07:48,926 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-09 03:07:48,926 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-12-09 03:07:48,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-09 03:07:48,943 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-09 03:07:48,943 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-12-09 03:07:48,943 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-12-09 03:07:48,943 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-12-09 03:07:48,943 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-12-09 03:07:48,943 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-12-09 03:07:48,943 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-12-09 03:07:48,944 INFO L87 Difference]: Start difference. First operand 40 states and 40 transitions. Second operand 3 states. [2018-12-09 03:07:48,959 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-09 03:07:48,959 INFO L93 Difference]: Finished difference Result 43 states and 42 transitions. [2018-12-09 03:07:48,959 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-12-09 03:07:48,959 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 25 [2018-12-09 03:07:48,960 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-09 03:07:48,960 INFO L225 Difference]: With dead ends: 43 [2018-12-09 03:07:48,960 INFO L226 Difference]: Without dead ends: 28 [2018-12-09 03:07:48,960 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-12-09 03:07:48,961 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states. [2018-12-09 03:07:48,962 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 28. [2018-12-09 03:07:48,962 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2018-12-09 03:07:48,963 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 27 transitions. [2018-12-09 03:07:48,963 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 27 transitions. Word has length 25 [2018-12-09 03:07:48,963 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-09 03:07:48,963 INFO L480 AbstractCegarLoop]: Abstraction has 28 states and 27 transitions. [2018-12-09 03:07:48,963 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-12-09 03:07:48,963 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 27 transitions. [2018-12-09 03:07:48,964 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2018-12-09 03:07:48,964 INFO L394 BasicCegarLoop]: Found error trace [2018-12-09 03:07:48,964 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-09 03:07:48,964 INFO L423 AbstractCegarLoop]: === Iteration 7 === [free_21Err0ASSERT_VIOLATIONMEMORY_FREE, free_21Err1ASSERT_VIOLATIONMEMORY_FREE, mainErr0ENSURES_VIOLATIONMEMORY_LEAK]=== [2018-12-09 03:07:48,964 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-09 03:07:48,964 INFO L82 PathProgramCache]: Analyzing trace with hash -926943146, now seen corresponding path program 1 times [2018-12-09 03:07:48,964 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-12-09 03:07:48,965 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-09 03:07:48,965 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-09 03:07:48,965 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-09 03:07:48,965 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-12-09 03:07:48,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-09 03:07:49,085 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-09 03:07:49,085 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-12-09 03:07:49,085 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2018-12-09 03:07:49,085 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-12-09 03:07:49,086 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2018-12-09 03:07:49,086 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2018-12-09 03:07:49,086 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=110, Unknown=0, NotChecked=0, Total=132 [2018-12-09 03:07:49,086 INFO L87 Difference]: Start difference. First operand 28 states and 27 transitions. Second operand 12 states. [2018-12-09 03:07:49,215 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-09 03:07:49,215 INFO L93 Difference]: Finished difference Result 27 states and 26 transitions. [2018-12-09 03:07:49,215 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2018-12-09 03:07:49,215 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 27 [2018-12-09 03:07:49,216 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-09 03:07:49,216 INFO L225 Difference]: With dead ends: 27 [2018-12-09 03:07:49,216 INFO L226 Difference]: Without dead ends: 0 [2018-12-09 03:07:49,216 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 6 SyntacticMatches, 1 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=39, Invalid=201, Unknown=0, NotChecked=0, Total=240 [2018-12-09 03:07:49,216 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2018-12-09 03:07:49,216 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2018-12-09 03:07:49,216 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2018-12-09 03:07:49,217 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2018-12-09 03:07:49,217 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 27 [2018-12-09 03:07:49,217 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-09 03:07:49,217 INFO L480 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2018-12-09 03:07:49,217 INFO L481 AbstractCegarLoop]: Interpolant automaton has 12 states. [2018-12-09 03:07:49,217 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2018-12-09 03:07:49,217 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2018-12-09 03:07:49,220 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 09.12 03:07:49 BoogieIcfgContainer [2018-12-09 03:07:49,220 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-12-09 03:07:49,220 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2018-12-09 03:07:49,220 INFO L271 PluginConnector]: Initializing Witness Printer... [2018-12-09 03:07:49,220 INFO L276 PluginConnector]: Witness Printer initialized [2018-12-09 03:07:49,221 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.12 03:07:48" (3/4) ... [2018-12-09 03:07:49,223 INFO L144 WitnessPrinter]: Generating witness for correct program [2018-12-09 03:07:49,227 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure free_21 [2018-12-09 03:07:49,227 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure alloc_21 [2018-12-09 03:07:49,227 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure ldv_malloc [2018-12-09 03:07:49,227 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure ULTIMATE.init [2018-12-09 03:07:49,228 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure main [2018-12-09 03:07:49,228 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure entry_point [2018-12-09 03:07:49,230 INFO L905 BoogieBacktranslator]: Reduced CFG by removing 14 nodes and edges [2018-12-09 03:07:49,231 INFO L905 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2018-12-09 03:07:49,231 INFO L905 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2018-12-09 03:07:49,261 INFO L145 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/working_dir_daf94fe4-caa7-43ed-8b0b-fef76cc61d3e/bin-2019/utaipan/witness.graphml [2018-12-09 03:07:49,261 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2018-12-09 03:07:49,262 INFO L168 Benchmark]: Toolchain (without parser) took 1632.02 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 89.7 MB). Free memory was 947.0 MB in the beginning and 852.8 MB in the end (delta: 94.2 MB). Peak memory consumption was 183.8 MB. Max. memory is 11.5 GB. [2018-12-09 03:07:49,262 INFO L168 Benchmark]: CDTParser took 0.18 ms. Allocated memory is still 1.0 GB. Free memory is still 973.3 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-12-09 03:07:49,263 INFO L168 Benchmark]: CACSL2BoogieTranslator took 358.04 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 89.7 MB). Free memory was 947.0 MB in the beginning and 1.1 GB in the end (delta: -114.7 MB). Peak memory consumption was 30.3 MB. Max. memory is 11.5 GB. [2018-12-09 03:07:49,263 INFO L168 Benchmark]: Boogie Procedure Inliner took 20.95 ms. Allocated memory is still 1.1 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. [2018-12-09 03:07:49,263 INFO L168 Benchmark]: Boogie Preprocessor took 13.62 ms. Allocated memory is still 1.1 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. [2018-12-09 03:07:49,264 INFO L168 Benchmark]: RCFGBuilder took 163.52 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.0 GB in the end (delta: 19.3 MB). Peak memory consumption was 19.3 MB. Max. memory is 11.5 GB. [2018-12-09 03:07:49,264 INFO L168 Benchmark]: TraceAbstraction took 1032.31 ms. Allocated memory is still 1.1 GB. Free memory was 1.0 GB in the beginning and 852.8 MB in the end (delta: 189.6 MB). Peak memory consumption was 189.6 MB. Max. memory is 11.5 GB. [2018-12-09 03:07:49,264 INFO L168 Benchmark]: Witness Printer took 40.96 ms. Allocated memory is still 1.1 GB. Free memory is still 852.8 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-12-09 03:07:49,266 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.18 ms. Allocated memory is still 1.0 GB. Free memory is still 973.3 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 358.04 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 89.7 MB). Free memory was 947.0 MB in the beginning and 1.1 GB in the end (delta: -114.7 MB). Peak memory consumption was 30.3 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 20.95 ms. Allocated memory is still 1.1 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. * Boogie Preprocessor took 13.62 ms. Allocated memory is still 1.1 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. * RCFGBuilder took 163.52 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.0 GB in the end (delta: 19.3 MB). Peak memory consumption was 19.3 MB. Max. memory is 11.5 GB. * TraceAbstraction took 1032.31 ms. Allocated memory is still 1.1 GB. Free memory was 1.0 GB in the beginning and 852.8 MB in the end (delta: 189.6 MB). Peak memory consumption was 189.6 MB. Max. memory is 11.5 GB. * Witness Printer took 40.96 ms. Allocated memory is still 1.1 GB. Free memory is still 852.8 MB. There was no memory consumed. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 1453]: free always succeeds For all program executions holds that free always succeeds at this location - PositiveResult [Line: 1453]: free always succeeds For all program executions holds that free always succeeds at this location - PositiveResult [Line: 1462]: all allocated memory was freed For all program executions holds that all allocated memory was freed at this location - AllSpecificationsHoldResult: All specifications hold 3 specifications checked. All of them hold - StatisticsResult: Ultimate Automizer benchmark data CFG has 7 procedures, 33 locations, 3 error locations. SAFE Result, 1.0s OverallTime, 7 OverallIterations, 1 TraceHistogramMax, 0.3s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 200 SDtfs, 49 SDslu, 865 SDs, 0 SdLazy, 419 SolverSat, 8 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 75 GetRequests, 23 SyntacticMatches, 1 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=49occurred in iteration=4, 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, 7 MinimizatonAttempts, 9 StatesRemovedByMinimization, 3 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.4s InterpolantComputationTime, 159 NumberOfCodeBlocks, 159 NumberOfCodeBlocksAsserted, 7 NumberOfCheckSat, 152 ConstructedInterpolants, 0 QuantifiedInterpolants, 12278 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 7 InterpolantComputations, 7 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...