./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/ldv-memsafety/memleaks_test8_2_false-valid-free.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_c4e5d56a-f8a4-45f6-a64f-bda13455294d/bin-2019/utaipan/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/working_dir_c4e5d56a-f8a4-45f6-a64f-bda13455294d/bin-2019/utaipan/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/working_dir_c4e5d56a-f8a4-45f6-a64f-bda13455294d/bin-2019/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/working_dir_c4e5d56a-f8a4-45f6-a64f-bda13455294d/bin-2019/utaipan/config/TaipanMemDerefMemtrack.xml -i ../../sv-benchmarks/c/ldv-memsafety/memleaks_test8_2_false-valid-free.i -s /tmp/vcloud-vcloud-master/worker/working_dir_c4e5d56a-f8a4-45f6-a64f-bda13455294d/bin-2019/utaipan/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/working_dir_c4e5d56a-f8a4-45f6-a64f-bda13455294d/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 92af3b6badb8feb06eec2591339d42260d19262b ............................................................................................................................................................................................................................................................................................................................................................................................................. Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE(valid-free) --- Real Ultimate output --- This is Ultimate 0.1.23-635dfa2 [2018-12-09 13:03:06,799 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-12-09 13:03:06,801 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-12-09 13:03:06,809 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-12-09 13:03:06,809 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-12-09 13:03:06,810 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-12-09 13:03:06,811 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-12-09 13:03:06,812 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-12-09 13:03:06,813 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-12-09 13:03:06,814 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-12-09 13:03:06,815 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-12-09 13:03:06,815 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-12-09 13:03:06,816 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-12-09 13:03:06,816 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-12-09 13:03:06,817 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-12-09 13:03:06,818 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-12-09 13:03:06,819 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-12-09 13:03:06,820 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-12-09 13:03:06,821 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-12-09 13:03:06,822 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-12-09 13:03:06,823 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-12-09 13:03:06,824 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-12-09 13:03:06,825 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-12-09 13:03:06,825 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-12-09 13:03:06,826 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-12-09 13:03:06,826 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-12-09 13:03:06,827 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-12-09 13:03:06,828 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-12-09 13:03:06,828 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-12-09 13:03:06,829 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-12-09 13:03:06,829 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-12-09 13:03:06,830 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-12-09 13:03:06,830 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-12-09 13:03:06,830 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-12-09 13:03:06,831 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-12-09 13:03:06,831 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-12-09 13:03:06,831 INFO L98 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/working_dir_c4e5d56a-f8a4-45f6-a64f-bda13455294d/bin-2019/utaipan/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Default.epf [2018-12-09 13:03:06,840 INFO L110 SettingsManager]: Loading preferences was successful [2018-12-09 13:03:06,840 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-12-09 13:03:06,841 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-12-09 13:03:06,841 INFO L133 SettingsManager]: * ... calls to implemented procedures=ONLY_FOR_CONCURRENT_PROGRAMS [2018-12-09 13:03:06,841 INFO L133 SettingsManager]: * User list type=DISABLED [2018-12-09 13:03:06,842 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-12-09 13:03:06,842 INFO L133 SettingsManager]: * Explicit value domain=true [2018-12-09 13:03:06,842 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-12-09 13:03:06,842 INFO L133 SettingsManager]: * Octagon Domain=false [2018-12-09 13:03:06,842 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-12-09 13:03:06,842 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-12-09 13:03:06,842 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-12-09 13:03:06,843 INFO L133 SettingsManager]: * Interval Domain=false [2018-12-09 13:03:06,843 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-12-09 13:03:06,843 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-12-09 13:03:06,843 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-12-09 13:03:06,844 INFO L133 SettingsManager]: * sizeof long=4 [2018-12-09 13:03:06,844 INFO L133 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2018-12-09 13:03:06,844 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-12-09 13:03:06,844 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-12-09 13:03:06,844 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-12-09 13:03:06,844 INFO L133 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2018-12-09 13:03:06,845 INFO L133 SettingsManager]: * Bitprecise bitfields=true [2018-12-09 13:03:06,845 INFO L133 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2018-12-09 13:03:06,845 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-12-09 13:03:06,845 INFO L133 SettingsManager]: * sizeof long double=12 [2018-12-09 13:03:06,845 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-12-09 13:03:06,845 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-12-09 13:03:06,845 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-12-09 13:03:06,846 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-12-09 13:03:06,846 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-12-09 13:03:06,846 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-12-09 13:03:06,846 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-12-09 13:03:06,846 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-12-09 13:03:06,846 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-12-09 13:03:06,846 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-12-09 13:03:06,847 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_c4e5d56a-f8a4-45f6-a64f-bda13455294d/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 -> 92af3b6badb8feb06eec2591339d42260d19262b [2018-12-09 13:03:06,871 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-12-09 13:03:06,881 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-12-09 13:03:06,883 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-12-09 13:03:06,884 INFO L271 PluginConnector]: Initializing CDTParser... [2018-12-09 13:03:06,885 INFO L276 PluginConnector]: CDTParser initialized [2018-12-09 13:03:06,885 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/working_dir_c4e5d56a-f8a4-45f6-a64f-bda13455294d/bin-2019/utaipan/../../sv-benchmarks/c/ldv-memsafety/memleaks_test8_2_false-valid-free.i [2018-12-09 13:03:06,923 INFO L221 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_c4e5d56a-f8a4-45f6-a64f-bda13455294d/bin-2019/utaipan/data/4b65a4916/62322a0f621a437e8f80cd26de96f69f/FLAG641eaa87b [2018-12-09 13:03:07,367 INFO L307 CDTParser]: Found 1 translation units. [2018-12-09 13:03:07,368 INFO L161 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/working_dir_c4e5d56a-f8a4-45f6-a64f-bda13455294d/sv-benchmarks/c/ldv-memsafety/memleaks_test8_2_false-valid-free.i [2018-12-09 13:03:07,375 INFO L355 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_c4e5d56a-f8a4-45f6-a64f-bda13455294d/bin-2019/utaipan/data/4b65a4916/62322a0f621a437e8f80cd26de96f69f/FLAG641eaa87b [2018-12-09 13:03:07,383 INFO L363 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/working_dir_c4e5d56a-f8a4-45f6-a64f-bda13455294d/bin-2019/utaipan/data/4b65a4916/62322a0f621a437e8f80cd26de96f69f [2018-12-09 13:03:07,385 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-12-09 13:03:07,386 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2018-12-09 13:03:07,386 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-12-09 13:03:07,386 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-12-09 13:03:07,388 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-12-09 13:03:07,389 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.12 01:03:07" (1/1) ... [2018-12-09 13:03:07,390 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@142c46d6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 01:03:07, skipping insertion in model container [2018-12-09 13:03:07,391 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.12 01:03:07" (1/1) ... [2018-12-09 13:03:07,395 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-12-09 13:03:07,416 INFO L176 MainTranslator]: Built tables and reachable declarations [2018-12-09 13:03:07,629 INFO L203 PostProcessor]: Analyzing one entry point: main [2018-12-09 13:03:07,638 INFO L191 MainTranslator]: Completed pre-run [2018-12-09 13:03:07,669 INFO L203 PostProcessor]: Analyzing one entry point: main [2018-12-09 13:03:07,701 INFO L195 MainTranslator]: Completed translation [2018-12-09 13:03:07,701 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 01:03:07 WrapperNode [2018-12-09 13:03:07,701 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-12-09 13:03:07,702 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-12-09 13:03:07,702 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-12-09 13:03:07,702 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-12-09 13:03:07,706 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 01:03:07" (1/1) ... [2018-12-09 13:03:07,717 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 01:03:07" (1/1) ... [2018-12-09 13:03:07,722 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-12-09 13:03:07,723 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-12-09 13:03:07,723 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-12-09 13:03:07,723 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-12-09 13:03:07,728 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 01:03:07" (1/1) ... [2018-12-09 13:03:07,728 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 01:03:07" (1/1) ... [2018-12-09 13:03:07,730 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 01:03:07" (1/1) ... [2018-12-09 13:03:07,730 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 01:03:07" (1/1) ... [2018-12-09 13:03:07,734 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 01:03:07" (1/1) ... [2018-12-09 13:03:07,735 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 01:03:07" (1/1) ... [2018-12-09 13:03:07,736 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 01:03:07" (1/1) ... [2018-12-09 13:03:07,737 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-12-09 13:03:07,737 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-12-09 13:03:07,737 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-12-09 13:03:07,737 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-12-09 13:03:07,737 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 01:03:07" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_c4e5d56a-f8a4-45f6-a64f-bda13455294d/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 13:03:07,767 INFO L130 BoogieDeclarations]: Found specification of procedure alloc_8 [2018-12-09 13:03:07,768 INFO L138 BoogieDeclarations]: Found implementation of procedure alloc_8 [2018-12-09 13:03:07,768 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.alloc [2018-12-09 13:03:07,768 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2018-12-09 13:03:07,768 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2018-12-09 13:03:07,768 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-12-09 13:03:07,768 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-12-09 13:03:07,768 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-12-09 13:03:07,768 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-12-09 13:03:07,768 INFO L130 BoogieDeclarations]: Found specification of procedure free_8 [2018-12-09 13:03:07,768 INFO L138 BoogieDeclarations]: Found implementation of procedure free_8 [2018-12-09 13:03:07,768 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2018-12-09 13:03:07,768 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2018-12-09 13:03:07,768 INFO L130 BoogieDeclarations]: Found specification of procedure entry_point [2018-12-09 13:03:07,768 INFO L138 BoogieDeclarations]: Found implementation of procedure entry_point [2018-12-09 13:03:07,769 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-12-09 13:03:07,769 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-12-09 13:03:07,879 INFO L275 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-12-09 13:03:07,879 INFO L280 CfgBuilder]: Removed 0 assue(true) statements. [2018-12-09 13:03:07,879 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.12 01:03:07 BoogieIcfgContainer [2018-12-09 13:03:07,879 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-12-09 13:03:07,880 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-12-09 13:03:07,880 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-12-09 13:03:07,882 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-12-09 13:03:07,882 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 09.12 01:03:07" (1/3) ... [2018-12-09 13:03:07,882 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4c2f5fa9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.12 01:03:07, skipping insertion in model container [2018-12-09 13:03:07,882 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 01:03:07" (2/3) ... [2018-12-09 13:03:07,882 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4c2f5fa9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.12 01:03:07, skipping insertion in model container [2018-12-09 13:03:07,883 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.12 01:03:07" (3/3) ... [2018-12-09 13:03:07,883 INFO L112 eAbstractionObserver]: Analyzing ICFG memleaks_test8_2_false-valid-free.i [2018-12-09 13:03:07,889 INFO L156 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-12-09 13:03:07,893 INFO L168 ceAbstractionStarter]: Appying trace abstraction to program that has 3 error locations. [2018-12-09 13:03:07,903 INFO L257 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2018-12-09 13:03:07,917 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-12-09 13:03:07,917 INFO L383 AbstractCegarLoop]: Hoare is false [2018-12-09 13:03:07,917 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-12-09 13:03:07,917 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-12-09 13:03:07,918 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-12-09 13:03:07,918 INFO L387 AbstractCegarLoop]: Difference is false [2018-12-09 13:03:07,918 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-12-09 13:03:07,918 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-12-09 13:03:07,927 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states. [2018-12-09 13:03:07,932 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2018-12-09 13:03:07,932 INFO L394 BasicCegarLoop]: Found error trace [2018-12-09 13:03:07,933 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-09 13:03:07,934 INFO L423 AbstractCegarLoop]: === Iteration 1 === [free_8Err1ASSERT_VIOLATIONMEMORY_FREE, free_8Err0ASSERT_VIOLATIONMEMORY_FREE, mainErr0ENSURES_VIOLATIONMEMORY_LEAK]=== [2018-12-09 13:03:07,937 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-09 13:03:07,937 INFO L82 PathProgramCache]: Analyzing trace with hash 853306323, now seen corresponding path program 1 times [2018-12-09 13:03:07,939 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-12-09 13:03:07,970 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-09 13:03:07,970 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-09 13:03:07,971 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-09 13:03:07,971 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-12-09 13:03:08,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-09 13:03:08,064 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 13:03:08,065 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-12-09 13:03:08,066 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-12-09 13:03:08,066 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-12-09 13:03:08,069 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-12-09 13:03:08,076 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-12-09 13:03:08,077 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-12-09 13:03:08,078 INFO L87 Difference]: Start difference. First operand 32 states. Second operand 5 states. [2018-12-09 13:03:08,126 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-09 13:03:08,126 INFO L93 Difference]: Finished difference Result 31 states and 33 transitions. [2018-12-09 13:03:08,127 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-12-09 13:03:08,128 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 18 [2018-12-09 13:03:08,128 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-09 13:03:08,133 INFO L225 Difference]: With dead ends: 31 [2018-12-09 13:03:08,133 INFO L226 Difference]: Without dead ends: 28 [2018-12-09 13:03:08,134 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2018-12-09 13:03:08,144 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states. [2018-12-09 13:03:08,154 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 28. [2018-12-09 13:03:08,155 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2018-12-09 13:03:08,156 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 30 transitions. [2018-12-09 13:03:08,156 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 30 transitions. Word has length 18 [2018-12-09 13:03:08,157 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-09 13:03:08,157 INFO L480 AbstractCegarLoop]: Abstraction has 28 states and 30 transitions. [2018-12-09 13:03:08,157 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-12-09 13:03:08,157 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 30 transitions. [2018-12-09 13:03:08,158 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2018-12-09 13:03:08,158 INFO L394 BasicCegarLoop]: Found error trace [2018-12-09 13:03:08,158 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-09 13:03:08,158 INFO L423 AbstractCegarLoop]: === Iteration 2 === [free_8Err1ASSERT_VIOLATIONMEMORY_FREE, free_8Err0ASSERT_VIOLATIONMEMORY_FREE, mainErr0ENSURES_VIOLATIONMEMORY_LEAK]=== [2018-12-09 13:03:08,158 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-09 13:03:08,158 INFO L82 PathProgramCache]: Analyzing trace with hash 682692273, now seen corresponding path program 1 times [2018-12-09 13:03:08,158 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-12-09 13:03:08,159 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-09 13:03:08,160 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-09 13:03:08,160 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-09 13:03:08,160 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-12-09 13:03:08,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-09 13:03:08,205 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 13:03:08,205 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-12-09 13:03:08,205 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-12-09 13:03:08,206 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-12-09 13:03:08,206 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-12-09 13:03:08,207 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-12-09 13:03:08,207 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-12-09 13:03:08,207 INFO L87 Difference]: Start difference. First operand 28 states and 30 transitions. Second operand 5 states. [2018-12-09 13:03:08,245 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-09 13:03:08,245 INFO L93 Difference]: Finished difference Result 41 states and 47 transitions. [2018-12-09 13:03:08,246 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-12-09 13:03:08,246 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 19 [2018-12-09 13:03:08,246 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-09 13:03:08,247 INFO L225 Difference]: With dead ends: 41 [2018-12-09 13:03:08,247 INFO L226 Difference]: Without dead ends: 41 [2018-12-09 13:03:08,248 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 1 SyntacticMatches, 1 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 13:03:08,248 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41 states. [2018-12-09 13:03:08,252 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41 to 40. [2018-12-09 13:03:08,252 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 40 states. [2018-12-09 13:03:08,253 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 46 transitions. [2018-12-09 13:03:08,253 INFO L78 Accepts]: Start accepts. Automaton has 40 states and 46 transitions. Word has length 19 [2018-12-09 13:03:08,253 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-09 13:03:08,253 INFO L480 AbstractCegarLoop]: Abstraction has 40 states and 46 transitions. [2018-12-09 13:03:08,253 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-12-09 13:03:08,254 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 46 transitions. [2018-12-09 13:03:08,254 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2018-12-09 13:03:08,254 INFO L394 BasicCegarLoop]: Found error trace [2018-12-09 13:03:08,254 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-09 13:03:08,254 INFO L423 AbstractCegarLoop]: === Iteration 3 === [free_8Err1ASSERT_VIOLATIONMEMORY_FREE, free_8Err0ASSERT_VIOLATIONMEMORY_FREE, mainErr0ENSURES_VIOLATIONMEMORY_LEAK]=== [2018-12-09 13:03:08,254 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-09 13:03:08,255 INFO L82 PathProgramCache]: Analyzing trace with hash 486178768, now seen corresponding path program 1 times [2018-12-09 13:03:08,255 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-12-09 13:03:08,256 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-09 13:03:08,256 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-09 13:03:08,256 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-09 13:03:08,256 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-12-09 13:03:08,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-09 13:03:08,298 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 13:03:08,299 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-12-09 13:03:08,299 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-12-09 13:03:08,299 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-12-09 13:03:08,299 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-12-09 13:03:08,299 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-12-09 13:03:08,299 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-12-09 13:03:08,299 INFO L87 Difference]: Start difference. First operand 40 states and 46 transitions. Second operand 5 states. [2018-12-09 13:03:08,324 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-09 13:03:08,324 INFO L93 Difference]: Finished difference Result 46 states and 52 transitions. [2018-12-09 13:03:08,325 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-12-09 13:03:08,325 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 19 [2018-12-09 13:03:08,325 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-09 13:03:08,325 INFO L225 Difference]: With dead ends: 46 [2018-12-09 13:03:08,325 INFO L226 Difference]: Without dead ends: 46 [2018-12-09 13:03:08,326 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2018-12-09 13:03:08,326 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46 states. [2018-12-09 13:03:08,329 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46 to 45. [2018-12-09 13:03:08,329 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 45 states. [2018-12-09 13:03:08,329 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 51 transitions. [2018-12-09 13:03:08,330 INFO L78 Accepts]: Start accepts. Automaton has 45 states and 51 transitions. Word has length 19 [2018-12-09 13:03:08,330 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-09 13:03:08,330 INFO L480 AbstractCegarLoop]: Abstraction has 45 states and 51 transitions. [2018-12-09 13:03:08,330 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-12-09 13:03:08,330 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 51 transitions. [2018-12-09 13:03:08,330 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2018-12-09 13:03:08,330 INFO L394 BasicCegarLoop]: Found error trace [2018-12-09 13:03:08,330 INFO L402 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-09 13:03:08,331 INFO L423 AbstractCegarLoop]: === Iteration 4 === [free_8Err1ASSERT_VIOLATIONMEMORY_FREE, free_8Err0ASSERT_VIOLATIONMEMORY_FREE, mainErr0ENSURES_VIOLATIONMEMORY_LEAK]=== [2018-12-09 13:03:08,331 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-09 13:03:08,331 INFO L82 PathProgramCache]: Analyzing trace with hash -1831551414, now seen corresponding path program 1 times [2018-12-09 13:03:08,331 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-12-09 13:03:08,332 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-09 13:03:08,332 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-09 13:03:08,332 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-09 13:03:08,332 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-12-09 13:03:08,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-12-09 13:03:08,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-12-09 13:03:08,365 INFO L469 BasicCegarLoop]: Counterexample might be feasible [2018-12-09 13:03:08,380 WARN L1298 BoogieBacktranslator]: Unfinished Backtranslation: IntegerLiteral 10 could not be translated for associated CType STRUCT~~ldv_list_head?next~*ldv_list_head?prev~*ldv_list_head# [2018-12-09 13:03:08,381 WARN L1298 BoogieBacktranslator]: Unfinished Backtranslation: IntegerLiteral 9 could not be translated for associated CType STRUCT~~ldv_list_head?next~*ldv_list_head?prev~*ldv_list_head# [2018-12-09 13:03:08,386 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 09.12 01:03:08 BoogieIcfgContainer [2018-12-09 13:03:08,386 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-12-09 13:03:08,386 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2018-12-09 13:03:08,386 INFO L271 PluginConnector]: Initializing Witness Printer... [2018-12-09 13:03:08,386 INFO L276 PluginConnector]: Witness Printer initialized [2018-12-09 13:03:08,387 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.12 01:03:07" (3/4) ... [2018-12-09 13:03:08,388 INFO L138 WitnessPrinter]: Generating witness for reachability counterexample [2018-12-09 13:03:08,393 WARN L1298 BoogieBacktranslator]: Unfinished Backtranslation: IntegerLiteral 10 could not be translated for associated CType STRUCT~~ldv_list_head?next~*ldv_list_head?prev~*ldv_list_head# [2018-12-09 13:03:08,393 WARN L1298 BoogieBacktranslator]: Unfinished Backtranslation: IntegerLiteral 9 could not be translated for associated CType STRUCT~~ldv_list_head?next~*ldv_list_head?prev~*ldv_list_head# [2018-12-09 13:03:08,418 INFO L145 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/working_dir_c4e5d56a-f8a4-45f6-a64f-bda13455294d/bin-2019/utaipan/witness.graphml [2018-12-09 13:03:08,419 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2018-12-09 13:03:08,419 INFO L168 Benchmark]: Toolchain (without parser) took 1033.79 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 137.4 MB). Free memory was 948.1 MB in the beginning and 1.0 GB in the end (delta: -61.3 MB). Peak memory consumption was 76.1 MB. Max. memory is 11.5 GB. [2018-12-09 13:03:08,420 INFO L168 Benchmark]: CDTParser took 0.15 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 13:03:08,420 INFO L168 Benchmark]: CACSL2BoogieTranslator took 315.13 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 137.4 MB). Free memory was 948.1 MB in the beginning and 1.1 GB in the end (delta: -159.5 MB). Peak memory consumption was 26.5 MB. Max. memory is 11.5 GB. [2018-12-09 13:03:08,420 INFO L168 Benchmark]: Boogie Procedure Inliner took 20.81 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. [2018-12-09 13:03:08,421 INFO L168 Benchmark]: Boogie Preprocessor took 14.10 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. [2018-12-09 13:03:08,421 INFO L168 Benchmark]: RCFGBuilder took 142.59 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 18.2 MB). Peak memory consumption was 18.2 MB. Max. memory is 11.5 GB. [2018-12-09 13:03:08,421 INFO L168 Benchmark]: TraceAbstraction took 506.41 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: 73.2 MB). Peak memory consumption was 73.2 MB. Max. memory is 11.5 GB. [2018-12-09 13:03:08,421 INFO L168 Benchmark]: Witness Printer took 32.27 ms. Allocated memory is still 1.2 GB. Free memory was 1.0 GB in the beginning and 1.0 GB in the end (delta: 6.8 MB). Peak memory consumption was 6.8 MB. Max. memory is 11.5 GB. [2018-12-09 13:03:08,424 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 973.3 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 315.13 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 137.4 MB). Free memory was 948.1 MB in the beginning and 1.1 GB in the end (delta: -159.5 MB). Peak memory consumption was 26.5 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 20.81 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. * Boogie Preprocessor took 14.10 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. * RCFGBuilder took 142.59 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 18.2 MB). Peak memory consumption was 18.2 MB. Max. memory is 11.5 GB. * TraceAbstraction took 506.41 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: 73.2 MB). Peak memory consumption was 73.2 MB. Max. memory is 11.5 GB. * Witness Printer took 32.27 ms. Allocated memory is still 1.2 GB. Free memory was 1.0 GB in the beginning and 1.0 GB in the end (delta: 6.8 MB). Peak memory consumption was 6.8 MB. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IntegerLiteral 10 could not be translated for associated CType STRUCT~~ldv_list_head?next~*ldv_list_head?prev~*ldv_list_head# - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IntegerLiteral 9 could not be translated for associated CType STRUCT~~ldv_list_head?next~*ldv_list_head?prev~*ldv_list_head# - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IntegerLiteral 10 could not be translated for associated CType STRUCT~~ldv_list_head?next~*ldv_list_head?prev~*ldv_list_head# - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IntegerLiteral 9 could not be translated for associated CType STRUCT~~ldv_list_head?next~*ldv_list_head?prev~*ldv_list_head# * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 1441]: free of unallocated memory possible free of unallocated memory possible We found a FailurePath: [L1135] struct ldv_list_head ldv_global_msg_list = { &(ldv_global_msg_list), &(ldv_global_msg_list) }; [L1434] int *a8; VAL [\old(a8)=13, \old(a8)=12, \old(ldv_global_msg_list)=null, \old(ldv_global_msg_list)=null, a8={0:0}, ldv_global_msg_list={14:0}] [L1453] CALL entry_point() VAL [\old(a8)=0, \old(a8)=0, a8={0:0}, ldv_global_msg_list={14:0}] [L1446] CALL alloc_8() VAL [\old(a8)=0, \old(a8)=0, a8={0:0}, ldv_global_msg_list={14:0}] [L1437] CALL, EXPR ldv_malloc(sizeof(int)) VAL [\old(a8)=0, \old(a8)=0, \old(size)=4, a8={0:0}, ldv_global_msg_list={14:0}] [L1073] COND TRUE __VERIFIER_nondet_int() [L1074] return malloc(size); VAL [\old(a8)=0, \old(a8)=0, \old(size)=4, \result={15:0}, a8={0:0}, ldv_global_msg_list={14:0}, malloc(size)={15:0}, size=4] [L1437] RET, EXPR ldv_malloc(sizeof(int)) VAL [\old(a8)=0, \old(a8)=0, a8={0:0}, ldv_global_msg_list={14:0}, ldv_malloc(sizeof(int))={15:0}] [L1437] a8 = (int *)ldv_malloc(sizeof(int)) [L1446] RET alloc_8() VAL [\old(a8)=0, \old(a8)=0, a8={15:0}, ldv_global_msg_list={14:0}] [L1447] CALL free_8() VAL [\old(a8)=0, \old(a8)=0, a8={15:0}, ldv_global_msg_list={14:0}] [L1441] COND TRUE \read(*a8) VAL [\old(a8)=0, \old(a8)=0, a8={15:0}, ldv_global_msg_list={14:0}] [L1441] free(a8) VAL [\old(a8)=0, \old(a8)=0, a8={15:0}, ldv_global_msg_list={14:0}] [L1441] free(a8) [L1447] RET free_8() VAL [\old(a8)=0, \old(a8)=0, a8={15:0}, ldv_global_msg_list={14:0}] [L1448] CALL free_8() VAL [\old(a8)=0, \old(a8)=0, a8={15:0}, ldv_global_msg_list={14:0}] [L1441] COND TRUE \read(*a8) VAL [\old(a8)=0, \old(a8)=0, a8={15:0}, ldv_global_msg_list={14:0}] [L1441] free(a8) VAL [\old(a8)=0, \old(a8)=0, a8={15:0}, ldv_global_msg_list={14:0}] [L1441] free(a8) VAL [\old(a8)=0, \old(a8)=0, a8={15:0}, ldv_global_msg_list={14:0}] - StatisticsResult: Ultimate Automizer benchmark data CFG has 7 procedures, 32 locations, 3 error locations. UNSAFE Result, 0.4s OverallTime, 4 OverallIterations, 2 TraceHistogramMax, 0.1s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 94 SDtfs, 49 SDslu, 188 SDs, 0 SdLazy, 68 SolverSat, 7 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 18 GetRequests, 4 SyntacticMatches, 1 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=45occurred in iteration=3, 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, 3 MinimizatonAttempts, 2 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.1s InterpolantComputationTime, 81 NumberOfCodeBlocks, 81 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 53 ConstructedInterpolants, 0 QuantifiedInterpolants, 2613 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 3 InterpolantComputations, 3 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! Received shutdown request...