./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/ldv-memsafety/memleaks_test4_false-valid-memtrack_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_be0fb8d2-b6ba-4593-9fc3-2d7fc63a72c5/bin-2019/utaipan/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/working_dir_be0fb8d2-b6ba-4593-9fc3-2d7fc63a72c5/bin-2019/utaipan/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/working_dir_be0fb8d2-b6ba-4593-9fc3-2d7fc63a72c5/bin-2019/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/working_dir_be0fb8d2-b6ba-4593-9fc3-2d7fc63a72c5/bin-2019/utaipan/config/TaipanMemDerefMemtrack.xml -i ../../sv-benchmarks/c/ldv-memsafety/memleaks_test4_false-valid-memtrack_true-termination.i -s /tmp/vcloud-vcloud-master/worker/working_dir_be0fb8d2-b6ba-4593-9fc3-2d7fc63a72c5/bin-2019/utaipan/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/working_dir_be0fb8d2-b6ba-4593-9fc3-2d7fc63a72c5/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 d672c9d2121bfd9df1a2883cdb54f37efa9bdb79 .......................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis Calling Ultimate with: java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/working_dir_be0fb8d2-b6ba-4593-9fc3-2d7fc63a72c5/bin-2019/utaipan/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/working_dir_be0fb8d2-b6ba-4593-9fc3-2d7fc63a72c5/bin-2019/utaipan/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/working_dir_be0fb8d2-b6ba-4593-9fc3-2d7fc63a72c5/bin-2019/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/working_dir_be0fb8d2-b6ba-4593-9fc3-2d7fc63a72c5/bin-2019/utaipan/config/TaipanMemDerefMemtrack.xml -i ../../sv-benchmarks/c/ldv-memsafety/memleaks_test4_false-valid-memtrack_true-termination.i -s /tmp/vcloud-vcloud-master/worker/working_dir_be0fb8d2-b6ba-4593-9fc3-2d7fc63a72c5/bin-2019/utaipan/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/working_dir_be0fb8d2-b6ba-4593-9fc3-2d7fc63a72c5/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 d672c9d2121bfd9df1a2883cdb54f37efa9bdb79 .................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: UNKNOWN: Overapproximated counterexample --- Real Ultimate output --- This is Ultimate 0.1.23-635dfa2 [2018-12-03 04:11:20,941 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-12-03 04:11:20,942 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-12-03 04:11:20,948 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-12-03 04:11:20,948 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-12-03 04:11:20,949 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-12-03 04:11:20,949 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-12-03 04:11:20,950 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-12-03 04:11:20,951 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-12-03 04:11:20,952 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-12-03 04:11:20,952 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-12-03 04:11:20,952 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-12-03 04:11:20,953 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-12-03 04:11:20,953 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-12-03 04:11:20,954 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-12-03 04:11:20,954 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-12-03 04:11:20,955 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-12-03 04:11:20,956 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-12-03 04:11:20,957 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-12-03 04:11:20,957 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-12-03 04:11:20,958 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-12-03 04:11:20,959 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-12-03 04:11:20,960 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-12-03 04:11:20,960 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-12-03 04:11:20,960 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-12-03 04:11:20,961 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-12-03 04:11:20,961 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-12-03 04:11:20,962 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-12-03 04:11:20,962 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-12-03 04:11:20,963 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-12-03 04:11:20,963 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-12-03 04:11:20,963 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-12-03 04:11:20,963 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-12-03 04:11:20,963 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-12-03 04:11:20,964 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-12-03 04:11:20,964 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-12-03 04:11:20,964 INFO L98 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/working_dir_be0fb8d2-b6ba-4593-9fc3-2d7fc63a72c5/bin-2019/utaipan/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Default.epf [2018-12-03 04:11:20,972 INFO L110 SettingsManager]: Loading preferences was successful [2018-12-03 04:11:20,972 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-12-03 04:11:20,972 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-12-03 04:11:20,972 INFO L133 SettingsManager]: * ... calls to implemented procedures=ONLY_FOR_CONCURRENT_PROGRAMS [2018-12-03 04:11:20,972 INFO L133 SettingsManager]: * User list type=DISABLED [2018-12-03 04:11:20,973 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-12-03 04:11:20,973 INFO L133 SettingsManager]: * Explicit value domain=true [2018-12-03 04:11:20,973 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-12-03 04:11:20,973 INFO L133 SettingsManager]: * Octagon Domain=false [2018-12-03 04:11:20,973 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-12-03 04:11:20,973 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-12-03 04:11:20,973 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-12-03 04:11:20,973 INFO L133 SettingsManager]: * Interval Domain=false [2018-12-03 04:11:20,974 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-12-03 04:11:20,974 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-12-03 04:11:20,974 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-12-03 04:11:20,974 INFO L133 SettingsManager]: * sizeof long=4 [2018-12-03 04:11:20,974 INFO L133 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2018-12-03 04:11:20,974 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-12-03 04:11:20,974 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-12-03 04:11:20,975 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-12-03 04:11:20,975 INFO L133 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2018-12-03 04:11:20,975 INFO L133 SettingsManager]: * Bitprecise bitfields=true [2018-12-03 04:11:20,975 INFO L133 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2018-12-03 04:11:20,975 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-12-03 04:11:20,975 INFO L133 SettingsManager]: * sizeof long double=12 [2018-12-03 04:11:20,975 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-12-03 04:11:20,975 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-12-03 04:11:20,976 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-12-03 04:11:20,976 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-12-03 04:11:20,976 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-12-03 04:11:20,976 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-12-03 04:11:20,976 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-12-03 04:11:20,976 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-12-03 04:11:20,976 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-12-03 04:11:20,976 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-12-03 04:11:20,976 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_be0fb8d2-b6ba-4593-9fc3-2d7fc63a72c5/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 -> d672c9d2121bfd9df1a2883cdb54f37efa9bdb79 [2018-12-03 04:11:20,995 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-12-03 04:11:21,004 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-12-03 04:11:21,007 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-12-03 04:11:21,008 INFO L271 PluginConnector]: Initializing CDTParser... [2018-12-03 04:11:21,008 INFO L276 PluginConnector]: CDTParser initialized [2018-12-03 04:11:21,008 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/working_dir_be0fb8d2-b6ba-4593-9fc3-2d7fc63a72c5/bin-2019/utaipan/../../sv-benchmarks/c/ldv-memsafety/memleaks_test4_false-valid-memtrack_true-termination.i [2018-12-03 04:11:21,046 INFO L221 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_be0fb8d2-b6ba-4593-9fc3-2d7fc63a72c5/bin-2019/utaipan/data/cf146b585/202a7fd064164b4f8c09f8f4a0925c1e/FLAGbfc610752 [2018-12-03 04:11:21,511 INFO L307 CDTParser]: Found 1 translation units. [2018-12-03 04:11:21,512 INFO L161 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/working_dir_be0fb8d2-b6ba-4593-9fc3-2d7fc63a72c5/sv-benchmarks/c/ldv-memsafety/memleaks_test4_false-valid-memtrack_true-termination.i [2018-12-03 04:11:21,520 INFO L355 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_be0fb8d2-b6ba-4593-9fc3-2d7fc63a72c5/bin-2019/utaipan/data/cf146b585/202a7fd064164b4f8c09f8f4a0925c1e/FLAGbfc610752 [2018-12-03 04:11:21,530 INFO L363 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/working_dir_be0fb8d2-b6ba-4593-9fc3-2d7fc63a72c5/bin-2019/utaipan/data/cf146b585/202a7fd064164b4f8c09f8f4a0925c1e [2018-12-03 04:11:21,533 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-12-03 04:11:21,534 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2018-12-03 04:11:21,534 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-12-03 04:11:21,534 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-12-03 04:11:21,537 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-12-03 04:11:21,537 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.12 04:11:21" (1/1) ... [2018-12-03 04:11:21,539 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4f5fc0d3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.12 04:11:21, skipping insertion in model container [2018-12-03 04:11:21,539 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.12 04:11:21" (1/1) ... [2018-12-03 04:11:21,545 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-12-03 04:11:21,574 INFO L176 MainTranslator]: Built tables and reachable declarations [2018-12-03 04:11:21,850 INFO L203 PostProcessor]: Analyzing one entry point: main [2018-12-03 04:11:21,860 INFO L191 MainTranslator]: Completed pre-run [2018-12-03 04:11:21,893 INFO L203 PostProcessor]: Analyzing one entry point: main [2018-12-03 04:11:21,924 INFO L195 MainTranslator]: Completed translation [2018-12-03 04:11:21,924 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.12 04:11:21 WrapperNode [2018-12-03 04:11:21,924 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-12-03 04:11:21,925 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-12-03 04:11:21,925 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-12-03 04:11:21,925 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-12-03 04:11:21,930 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.12 04:11:21" (1/1) ... [2018-12-03 04:11:21,941 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.12 04:11:21" (1/1) ... [2018-12-03 04:11:21,946 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-12-03 04:11:21,946 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-12-03 04:11:21,947 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-12-03 04:11:21,947 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-12-03 04:11:21,952 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.12 04:11:21" (1/1) ... [2018-12-03 04:11:21,952 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.12 04:11:21" (1/1) ... [2018-12-03 04:11:21,954 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.12 04:11:21" (1/1) ... [2018-12-03 04:11:21,954 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.12 04:11:21" (1/1) ... [2018-12-03 04:11:21,958 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.12 04:11:21" (1/1) ... [2018-12-03 04:11:21,959 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.12 04:11:21" (1/1) ... [2018-12-03 04:11:21,960 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.12 04:11:21" (1/1) ... [2018-12-03 04:11:21,961 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-12-03 04:11:21,961 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-12-03 04:11:21,961 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-12-03 04:11:21,961 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-12-03 04:11:21,962 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.12 04:11:21" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_be0fb8d2-b6ba-4593-9fc3-2d7fc63a72c5/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 [2018-12-03 04:11:21,993 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.alloc [2018-12-03 04:11:21,993 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2018-12-03 04:11:21,993 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2018-12-03 04:11:21,994 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-12-03 04:11:21,994 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-12-03 04:11:21,994 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-12-03 04:11:21,994 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-12-03 04:11:21,994 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2018-12-03 04:11:21,994 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2018-12-03 04:11:21,994 INFO L130 BoogieDeclarations]: Found specification of procedure entry_point [2018-12-03 04:11:21,994 INFO L138 BoogieDeclarations]: Found implementation of procedure entry_point [2018-12-03 04:11:21,994 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-12-03 04:11:21,995 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-12-03 04:11:22,103 INFO L275 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-12-03 04:11:22,103 INFO L280 CfgBuilder]: Removed 0 assue(true) statements. [2018-12-03 04:11:22,103 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.12 04:11:22 BoogieIcfgContainer [2018-12-03 04:11:22,103 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-12-03 04:11:22,104 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-12-03 04:11:22,104 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-12-03 04:11:22,106 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-12-03 04:11:22,106 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 03.12 04:11:21" (1/3) ... [2018-12-03 04:11:22,107 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@eb61c62 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.12 04:11:22, skipping insertion in model container [2018-12-03 04:11:22,107 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.12 04:11:21" (2/3) ... [2018-12-03 04:11:22,107 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@eb61c62 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.12 04:11:22, skipping insertion in model container [2018-12-03 04:11:22,107 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.12 04:11:22" (3/3) ... [2018-12-03 04:11:22,108 INFO L112 eAbstractionObserver]: Analyzing ICFG memleaks_test4_false-valid-memtrack_true-termination.i [2018-12-03 04:11:22,115 INFO L156 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-12-03 04:11:22,119 INFO L168 ceAbstractionStarter]: Appying trace abstraction to program that has 3 error locations. [2018-12-03 04:11:22,129 INFO L257 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2018-12-03 04:11:22,145 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-12-03 04:11:22,145 INFO L383 AbstractCegarLoop]: Hoare is false [2018-12-03 04:11:22,145 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-12-03 04:11:22,145 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-12-03 04:11:22,146 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-12-03 04:11:22,146 INFO L387 AbstractCegarLoop]: Difference is false [2018-12-03 04:11:22,146 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-12-03 04:11:22,146 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-12-03 04:11:22,155 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states. [2018-12-03 04:11:22,160 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2018-12-03 04:11:22,160 INFO L394 BasicCegarLoop]: Found error trace [2018-12-03 04:11:22,161 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-03 04:11:22,162 INFO L423 AbstractCegarLoop]: === Iteration 1 === [mainErr0ENSURES_VIOLATIONMEMORY_LEAK, entry_pointErr0ASSERT_VIOLATIONMEMORY_FREE, entry_pointErr1ASSERT_VIOLATIONMEMORY_FREE]=== [2018-12-03 04:11:22,165 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-03 04:11:22,166 INFO L82 PathProgramCache]: Analyzing trace with hash 507056538, now seen corresponding path program 1 times [2018-12-03 04:11:22,167 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-12-03 04:11:22,202 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-03 04:11:22,202 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-03 04:11:22,202 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-03 04:11:22,202 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-12-03 04:11:22,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-03 04:11:22,279 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-03 04:11:22,280 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-12-03 04:11:22,281 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-12-03 04:11:22,281 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-12-03 04:11:22,284 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-12-03 04:11:22,292 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-12-03 04:11:22,292 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-12-03 04:11:22,294 INFO L87 Difference]: Start difference. First operand 26 states. Second operand 5 states. [2018-12-03 04:11:22,319 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-03 04:11:22,319 INFO L93 Difference]: Finished difference Result 38 states and 43 transitions. [2018-12-03 04:11:22,320 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-12-03 04:11:22,321 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 16 [2018-12-03 04:11:22,321 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-03 04:11:22,326 INFO L225 Difference]: With dead ends: 38 [2018-12-03 04:11:22,326 INFO L226 Difference]: Without dead ends: 35 [2018-12-03 04:11:22,327 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 [2018-12-03 04:11:22,338 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states. [2018-12-03 04:11:22,350 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 27. [2018-12-03 04:11:22,351 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2018-12-03 04:11:22,351 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 30 transitions. [2018-12-03 04:11:22,352 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 30 transitions. Word has length 16 [2018-12-03 04:11:22,352 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-03 04:11:22,352 INFO L480 AbstractCegarLoop]: Abstraction has 27 states and 30 transitions. [2018-12-03 04:11:22,352 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-12-03 04:11:22,352 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 30 transitions. [2018-12-03 04:11:22,353 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2018-12-03 04:11:22,353 INFO L394 BasicCegarLoop]: Found error trace [2018-12-03 04:11:22,353 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-03 04:11:22,354 INFO L423 AbstractCegarLoop]: === Iteration 2 === [mainErr0ENSURES_VIOLATIONMEMORY_LEAK, entry_pointErr0ASSERT_VIOLATIONMEMORY_FREE, entry_pointErr1ASSERT_VIOLATIONMEMORY_FREE]=== [2018-12-03 04:11:22,354 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-03 04:11:22,354 INFO L82 PathProgramCache]: Analyzing trace with hash -2045100423, now seen corresponding path program 1 times [2018-12-03 04:11:22,354 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-12-03 04:11:22,355 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-03 04:11:22,355 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-03 04:11:22,356 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-03 04:11:22,356 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-12-03 04:11:22,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-03 04:11:22,386 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-03 04:11:22,386 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-12-03 04:11:22,386 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-12-03 04:11:22,386 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-12-03 04:11:22,387 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-12-03 04:11:22,388 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-12-03 04:11:22,388 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-12-03 04:11:22,388 INFO L87 Difference]: Start difference. First operand 27 states and 30 transitions. Second operand 3 states. [2018-12-03 04:11:22,415 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-03 04:11:22,415 INFO L93 Difference]: Finished difference Result 36 states and 40 transitions. [2018-12-03 04:11:22,415 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-12-03 04:11:22,415 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 16 [2018-12-03 04:11:22,415 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-03 04:11:22,416 INFO L225 Difference]: With dead ends: 36 [2018-12-03 04:11:22,416 INFO L226 Difference]: Without dead ends: 33 [2018-12-03 04:11:22,416 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-12-03 04:11:22,417 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33 states. [2018-12-03 04:11:22,418 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33 to 23. [2018-12-03 04:11:22,419 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2018-12-03 04:11:22,419 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 24 transitions. [2018-12-03 04:11:22,419 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 24 transitions. Word has length 16 [2018-12-03 04:11:22,419 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-03 04:11:22,419 INFO L480 AbstractCegarLoop]: Abstraction has 23 states and 24 transitions. [2018-12-03 04:11:22,420 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-12-03 04:11:22,420 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 24 transitions. [2018-12-03 04:11:22,420 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2018-12-03 04:11:22,420 INFO L394 BasicCegarLoop]: Found error trace [2018-12-03 04:11:22,420 INFO L402 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-03 04:11:22,420 INFO L423 AbstractCegarLoop]: === Iteration 3 === [mainErr0ENSURES_VIOLATIONMEMORY_LEAK, entry_pointErr0ASSERT_VIOLATIONMEMORY_FREE, entry_pointErr1ASSERT_VIOLATIONMEMORY_FREE]=== [2018-12-03 04:11:22,421 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-03 04:11:22,421 INFO L82 PathProgramCache]: Analyzing trace with hash -1270707771, now seen corresponding path program 1 times [2018-12-03 04:11:22,421 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-12-03 04:11:22,422 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-03 04:11:22,422 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-03 04:11:22,422 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-03 04:11:22,422 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-12-03 04:11:22,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-03 04:11:22,463 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2018-12-03 04:11:22,463 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-12-03 04:11:22,463 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-12-03 04:11:22,463 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-12-03 04:11:22,464 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-12-03 04:11:22,464 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-12-03 04:11:22,464 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-12-03 04:11:22,464 INFO L87 Difference]: Start difference. First operand 23 states and 24 transitions. Second operand 5 states. [2018-12-03 04:11:22,470 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-03 04:11:22,470 INFO L93 Difference]: Finished difference Result 22 states and 23 transitions. [2018-12-03 04:11:22,471 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-12-03 04:11:22,471 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 20 [2018-12-03 04:11:22,471 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-03 04:11:22,471 INFO L225 Difference]: With dead ends: 22 [2018-12-03 04:11:22,471 INFO L226 Difference]: Without dead ends: 22 [2018-12-03 04:11:22,471 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-12-03 04:11:22,472 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22 states. [2018-12-03 04:11:22,473 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22 to 22. [2018-12-03 04:11:22,473 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2018-12-03 04:11:22,473 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 23 transitions. [2018-12-03 04:11:22,473 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 23 transitions. Word has length 20 [2018-12-03 04:11:22,473 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-03 04:11:22,473 INFO L480 AbstractCegarLoop]: Abstraction has 22 states and 23 transitions. [2018-12-03 04:11:22,474 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-12-03 04:11:22,474 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 23 transitions. [2018-12-03 04:11:22,474 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2018-12-03 04:11:22,474 INFO L394 BasicCegarLoop]: Found error trace [2018-12-03 04:11:22,474 INFO L402 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-03 04:11:22,474 INFO L423 AbstractCegarLoop]: === Iteration 4 === [mainErr0ENSURES_VIOLATIONMEMORY_LEAK, entry_pointErr0ASSERT_VIOLATIONMEMORY_FREE, entry_pointErr1ASSERT_VIOLATIONMEMORY_FREE]=== [2018-12-03 04:11:22,474 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-03 04:11:22,474 INFO L82 PathProgramCache]: Analyzing trace with hash -737235183, now seen corresponding path program 1 times [2018-12-03 04:11:22,474 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-12-03 04:11:22,475 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-03 04:11:22,475 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-03 04:11:22,475 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-03 04:11:22,476 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-12-03 04:11:22,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-03 04:11:22,510 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2018-12-03 04:11:22,510 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-12-03 04:11:22,511 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-12-03 04:11:22,511 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-12-03 04:11:22,511 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-12-03 04:11:22,511 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-12-03 04:11:22,511 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-12-03 04:11:22,511 INFO L87 Difference]: Start difference. First operand 22 states and 23 transitions. Second operand 5 states. [2018-12-03 04:11:22,536 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-03 04:11:22,536 INFO L93 Difference]: Finished difference Result 27 states and 29 transitions. [2018-12-03 04:11:22,536 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-12-03 04:11:22,536 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 21 [2018-12-03 04:11:22,537 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-03 04:11:22,537 INFO L225 Difference]: With dead ends: 27 [2018-12-03 04:11:22,537 INFO L226 Difference]: Without dead ends: 27 [2018-12-03 04:11:22,537 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-12-03 04:11:22,538 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2018-12-03 04:11:22,539 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 27. [2018-12-03 04:11:22,539 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2018-12-03 04:11:22,540 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 29 transitions. [2018-12-03 04:11:22,540 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 29 transitions. Word has length 21 [2018-12-03 04:11:22,540 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-03 04:11:22,540 INFO L480 AbstractCegarLoop]: Abstraction has 27 states and 29 transitions. [2018-12-03 04:11:22,540 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-12-03 04:11:22,540 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 29 transitions. [2018-12-03 04:11:22,540 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2018-12-03 04:11:22,540 INFO L394 BasicCegarLoop]: Found error trace [2018-12-03 04:11:22,540 INFO L402 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-03 04:11:22,541 INFO L423 AbstractCegarLoop]: === Iteration 5 === [mainErr0ENSURES_VIOLATIONMEMORY_LEAK, entry_pointErr0ASSERT_VIOLATIONMEMORY_FREE, entry_pointErr1ASSERT_VIOLATIONMEMORY_FREE]=== [2018-12-03 04:11:22,541 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-03 04:11:22,541 INFO L82 PathProgramCache]: Analyzing trace with hash -708606032, now seen corresponding path program 1 times [2018-12-03 04:11:22,541 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-12-03 04:11:22,542 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-03 04:11:22,542 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-03 04:11:22,542 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-03 04:11:22,542 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-12-03 04:11:22,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-03 04:11:22,578 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2018-12-03 04:11:22,578 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-12-03 04:11:22,578 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-12-03 04:11:22,578 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-12-03 04:11:22,578 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-12-03 04:11:22,578 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-12-03 04:11:22,579 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-12-03 04:11:22,579 INFO L87 Difference]: Start difference. First operand 27 states and 29 transitions. Second operand 5 states. [2018-12-03 04:11:22,587 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-03 04:11:22,587 INFO L93 Difference]: Finished difference Result 28 states and 30 transitions. [2018-12-03 04:11:22,587 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-12-03 04:11:22,587 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 21 [2018-12-03 04:11:22,588 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-03 04:11:22,588 INFO L225 Difference]: With dead ends: 28 [2018-12-03 04:11:22,588 INFO L226 Difference]: Without dead ends: 28 [2018-12-03 04:11:22,588 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-12-03 04:11:22,588 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states. [2018-12-03 04:11:22,590 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 21. [2018-12-03 04:11:22,590 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2018-12-03 04:11:22,590 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 22 transitions. [2018-12-03 04:11:22,590 INFO L78 Accepts]: Start accepts. Automaton has 21 states and 22 transitions. Word has length 21 [2018-12-03 04:11:22,590 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-03 04:11:22,590 INFO L480 AbstractCegarLoop]: Abstraction has 21 states and 22 transitions. [2018-12-03 04:11:22,590 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-12-03 04:11:22,590 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states and 22 transitions. [2018-12-03 04:11:22,591 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2018-12-03 04:11:22,591 INFO L394 BasicCegarLoop]: Found error trace [2018-12-03 04:11:22,591 INFO L402 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-03 04:11:22,591 INFO L423 AbstractCegarLoop]: === Iteration 6 === [mainErr0ENSURES_VIOLATIONMEMORY_LEAK, entry_pointErr0ASSERT_VIOLATIONMEMORY_FREE, entry_pointErr1ASSERT_VIOLATIONMEMORY_FREE]=== [2018-12-03 04:11:22,591 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-03 04:11:22,591 INFO L82 PathProgramCache]: Analyzing trace with hash 1489472757, now seen corresponding path program 1 times [2018-12-03 04:11:22,591 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-12-03 04:11:22,592 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-03 04:11:22,592 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-03 04:11:22,592 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-03 04:11:22,592 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-12-03 04:11:22,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-12-03 04:11:22,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-12-03 04:11:22,619 INFO L469 BasicCegarLoop]: Counterexample might be feasible [2018-12-03 04:11:22,627 WARN L416 cessorBacktranslator]: Generated EnsuresSpecification ensures #valid == old(#valid); is not ensure(true) [2018-12-03 04:11:22,634 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# [2018-12-03 04:11:22,634 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# [2018-12-03 04:11:22,639 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 03.12 04:11:22 BoogieIcfgContainer [2018-12-03 04:11:22,639 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-12-03 04:11:22,639 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2018-12-03 04:11:22,640 INFO L271 PluginConnector]: Initializing Witness Printer... [2018-12-03 04:11:22,640 INFO L276 PluginConnector]: Witness Printer initialized [2018-12-03 04:11:22,640 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.12 04:11:22" (3/4) ... [2018-12-03 04:11:22,642 INFO L147 WitnessPrinter]: No result that supports witness generation found [2018-12-03 04:11:22,642 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2018-12-03 04:11:22,643 INFO L168 Benchmark]: Toolchain (without parser) took 1109.77 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 129.5 MB). Free memory was 947.0 MB in the beginning and 1.0 GB in the end (delta: -60.0 MB). Peak memory consumption was 69.5 MB. Max. memory is 11.5 GB. [2018-12-03 04:11:22,644 INFO L168 Benchmark]: CDTParser took 0.13 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. [2018-12-03 04:11:22,644 INFO L168 Benchmark]: CACSL2BoogieTranslator took 390.32 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 129.5 MB). Free memory was 947.0 MB in the beginning and 1.1 GB in the end (delta: -152.4 MB). Peak memory consumption was 30.8 MB. Max. memory is 11.5 GB. [2018-12-03 04:11:22,644 INFO L168 Benchmark]: Boogie Procedure Inliner took 21.45 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. [2018-12-03 04:11:22,644 INFO L168 Benchmark]: Boogie Preprocessor took 14.48 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. [2018-12-03 04:11:22,645 INFO L168 Benchmark]: RCFGBuilder took 142.23 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 21.9 MB). Peak memory consumption was 21.9 MB. Max. memory is 11.5 GB. [2018-12-03 04:11:22,645 INFO L168 Benchmark]: TraceAbstraction took 535.47 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: 70.5 MB). Peak memory consumption was 70.5 MB. Max. memory is 11.5 GB. [2018-12-03 04:11:22,645 INFO L168 Benchmark]: Witness Printer took 2.73 ms. Allocated memory is still 1.2 GB. Free memory is still 1.0 GB. There was no memory consumed. Max. memory is 11.5 GB. [2018-12-03 04:11:22,647 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.13 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 390.32 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 129.5 MB). Free memory was 947.0 MB in the beginning and 1.1 GB in the end (delta: -152.4 MB). Peak memory consumption was 30.8 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 21.45 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 14.48 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 142.23 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 21.9 MB). Peak memory consumption was 21.9 MB. Max. memory is 11.5 GB. * TraceAbstraction took 535.47 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: 70.5 MB). Peak memory consumption was 70.5 MB. Max. memory is 11.5 GB. * Witness Printer took 2.73 ms. Allocated memory is still 1.2 GB. Free memory is still 1.0 GB. There was no memory consumed. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.boogie.preprocessor: - GenericResult: Unfinished Backtranslation Generated EnsuresSpecification ensures #valid == old(#valid); is not ensure(true) * 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# * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 1443]: Unable to prove that all allocated memory was freed Unable to prove that all allocated memory was freed Reason: overapproximation of memtrack at line 1443. Possible FailurePath: [L1135] struct ldv_list_head ldv_global_msg_list = { &(ldv_global_msg_list), &(ldv_global_msg_list) }; VAL [\old(ldv_global_msg_list)=null, \old(ldv_global_msg_list)=null, ldv_global_msg_list={13:0}] [L1444] CALL entry_point() VAL [ldv_global_msg_list={13:0}] [L1435] CALL, EXPR ldv_malloc(sizeof(int)) VAL [\old(size)=4, ldv_global_msg_list={13:0}] [L1073] COND TRUE __VERIFIER_nondet_int() [L1074] return malloc(size); VAL [\old(size)=4, \result={15:0}, ldv_global_msg_list={13:0}, malloc(size)={15:0}, size=4] [L1435] RET, EXPR ldv_malloc(sizeof(int)) VAL [ldv_global_msg_list={13:0}, ldv_malloc(sizeof(int))={15:0}] [L1435] int *p = (int *)ldv_malloc(sizeof(int)); [L1436] COND TRUE \read(*p) VAL [ldv_global_msg_list={13:0}, p={15:0}] [L1437] CALL, EXPR ldv_malloc(sizeof(int)) VAL [\old(size)=4, ldv_global_msg_list={13:0}] [L1073] COND TRUE __VERIFIER_nondet_int() [L1074] return malloc(size); VAL [\old(size)=4, \result={12:0}, ldv_global_msg_list={13:0}, malloc(size)={12:0}, size=4] [L1437] RET, EXPR ldv_malloc(sizeof(int)) VAL [ldv_global_msg_list={13:0}, ldv_malloc(sizeof(int))={12:0}, p={15:0}] [L1437] int *q = (int *)ldv_malloc(sizeof(int)); [L1438] free(q) VAL [ldv_global_msg_list={13:0}, p={15:0}, q={12:0}] [L1438] free(q) [L1444] RET entry_point() VAL [ldv_global_msg_list={13:0}] - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 26 locations, 3 error locations. UNSAFE Result, 0.4s OverallTime, 6 OverallIterations, 2 TraceHistogramMax, 0.1s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 130 SDtfs, 18 SDslu, 268 SDs, 0 SdLazy, 68 SolverSat, 4 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 23 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=27occurred in iteration=1, 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, 5 MinimizatonAttempts, 25 StatesRemovedByMinimization, 3 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.1s InterpolantComputationTime, 118 NumberOfCodeBlocks, 118 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 89 ConstructedInterpolants, 0 QuantifiedInterpolants, 2873 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 5 InterpolantComputations, 5 PerfectInterpolantSequences, 12/12 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces Received shutdown request... ### Bit-precise run ### This is Ultimate 0.1.23-635dfa2 [2018-12-03 04:11:23,981 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-12-03 04:11:23,982 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-12-03 04:11:23,988 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-12-03 04:11:23,988 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-12-03 04:11:23,988 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-12-03 04:11:23,989 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-12-03 04:11:23,990 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-12-03 04:11:23,991 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-12-03 04:11:23,991 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-12-03 04:11:23,991 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-12-03 04:11:23,992 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-12-03 04:11:23,992 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-12-03 04:11:23,992 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-12-03 04:11:23,993 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-12-03 04:11:23,993 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-12-03 04:11:23,994 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-12-03 04:11:23,995 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-12-03 04:11:23,996 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-12-03 04:11:23,996 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-12-03 04:11:23,997 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-12-03 04:11:23,997 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-12-03 04:11:23,998 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-12-03 04:11:23,999 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-12-03 04:11:23,999 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-12-03 04:11:23,999 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-12-03 04:11:24,000 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-12-03 04:11:24,000 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-12-03 04:11:24,001 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-12-03 04:11:24,001 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-12-03 04:11:24,001 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-12-03 04:11:24,002 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-12-03 04:11:24,002 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-12-03 04:11:24,002 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-12-03 04:11:24,002 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-12-03 04:11:24,003 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-12-03 04:11:24,003 INFO L98 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/working_dir_be0fb8d2-b6ba-4593-9fc3-2d7fc63a72c5/bin-2019/utaipan/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Bitvector.epf [2018-12-03 04:11:24,010 INFO L110 SettingsManager]: Loading preferences was successful [2018-12-03 04:11:24,010 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-12-03 04:11:24,011 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-12-03 04:11:24,011 INFO L133 SettingsManager]: * ... calls to implemented procedures=ONLY_FOR_CONCURRENT_PROGRAMS [2018-12-03 04:11:24,011 INFO L133 SettingsManager]: * User list type=DISABLED [2018-12-03 04:11:24,011 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-12-03 04:11:24,011 INFO L133 SettingsManager]: * Explicit value domain=true [2018-12-03 04:11:24,012 INFO L133 SettingsManager]: * Octagon Domain=false [2018-12-03 04:11:24,012 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-12-03 04:11:24,012 INFO L133 SettingsManager]: * Interval Domain=false [2018-12-03 04:11:24,012 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-12-03 04:11:24,012 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-12-03 04:11:24,012 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-12-03 04:11:24,013 INFO L133 SettingsManager]: * sizeof long=4 [2018-12-03 04:11:24,013 INFO L133 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2018-12-03 04:11:24,013 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-12-03 04:11:24,013 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-12-03 04:11:24,013 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-12-03 04:11:24,013 INFO L133 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2018-12-03 04:11:24,013 INFO L133 SettingsManager]: * Bitprecise bitfields=true [2018-12-03 04:11:24,013 INFO L133 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2018-12-03 04:11:24,014 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-12-03 04:11:24,014 INFO L133 SettingsManager]: * Use bitvectors instead of ints=true [2018-12-03 04:11:24,014 INFO L133 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2018-12-03 04:11:24,014 INFO L133 SettingsManager]: * sizeof long double=12 [2018-12-03 04:11:24,014 INFO L133 SettingsManager]: * Use constant arrays=true [2018-12-03 04:11:24,014 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-12-03 04:11:24,014 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-12-03 04:11:24,014 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-12-03 04:11:24,015 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-12-03 04:11:24,015 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-12-03 04:11:24,015 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-12-03 04:11:24,015 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-12-03 04:11:24,015 INFO L133 SettingsManager]: * Trace refinement strategy=WALRUS [2018-12-03 04:11:24,015 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-12-03 04:11:24,015 INFO L133 SettingsManager]: * Command for external solver=cvc4 --incremental --rewrite-divk --print-success --lang smt [2018-12-03 04:11:24,015 INFO L133 SettingsManager]: * Logic for external solver=AUFBV 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_be0fb8d2-b6ba-4593-9fc3-2d7fc63a72c5/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 -> d672c9d2121bfd9df1a2883cdb54f37efa9bdb79 [2018-12-03 04:11:24,034 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-12-03 04:11:24,044 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-12-03 04:11:24,047 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-12-03 04:11:24,048 INFO L271 PluginConnector]: Initializing CDTParser... [2018-12-03 04:11:24,048 INFO L276 PluginConnector]: CDTParser initialized [2018-12-03 04:11:24,049 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/working_dir_be0fb8d2-b6ba-4593-9fc3-2d7fc63a72c5/bin-2019/utaipan/../../sv-benchmarks/c/ldv-memsafety/memleaks_test4_false-valid-memtrack_true-termination.i [2018-12-03 04:11:24,094 INFO L221 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_be0fb8d2-b6ba-4593-9fc3-2d7fc63a72c5/bin-2019/utaipan/data/b7667b616/0da2399d2b8b488e9d6937637b9a8714/FLAG62d11e1a1 [2018-12-03 04:11:24,527 INFO L307 CDTParser]: Found 1 translation units. [2018-12-03 04:11:24,527 INFO L161 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/working_dir_be0fb8d2-b6ba-4593-9fc3-2d7fc63a72c5/sv-benchmarks/c/ldv-memsafety/memleaks_test4_false-valid-memtrack_true-termination.i [2018-12-03 04:11:24,534 INFO L355 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_be0fb8d2-b6ba-4593-9fc3-2d7fc63a72c5/bin-2019/utaipan/data/b7667b616/0da2399d2b8b488e9d6937637b9a8714/FLAG62d11e1a1 [2018-12-03 04:11:24,542 INFO L363 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/working_dir_be0fb8d2-b6ba-4593-9fc3-2d7fc63a72c5/bin-2019/utaipan/data/b7667b616/0da2399d2b8b488e9d6937637b9a8714 [2018-12-03 04:11:24,544 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-12-03 04:11:24,545 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2018-12-03 04:11:24,545 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-12-03 04:11:24,545 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-12-03 04:11:24,547 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-12-03 04:11:24,548 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.12 04:11:24" (1/1) ... [2018-12-03 04:11:24,549 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4096dacc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.12 04:11:24, skipping insertion in model container [2018-12-03 04:11:24,549 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.12 04:11:24" (1/1) ... [2018-12-03 04:11:24,553 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-12-03 04:11:24,574 INFO L176 MainTranslator]: Built tables and reachable declarations [2018-12-03 04:11:24,795 INFO L203 PostProcessor]: Analyzing one entry point: main [2018-12-03 04:11:24,808 INFO L191 MainTranslator]: Completed pre-run [2018-12-03 04:11:24,871 INFO L203 PostProcessor]: Analyzing one entry point: main [2018-12-03 04:11:24,904 INFO L195 MainTranslator]: Completed translation [2018-12-03 04:11:24,904 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.12 04:11:24 WrapperNode [2018-12-03 04:11:24,904 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-12-03 04:11:24,904 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-12-03 04:11:24,905 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-12-03 04:11:24,905 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-12-03 04:11:24,909 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.12 04:11:24" (1/1) ... [2018-12-03 04:11:24,921 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.12 04:11:24" (1/1) ... [2018-12-03 04:11:24,925 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-12-03 04:11:24,926 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-12-03 04:11:24,926 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-12-03 04:11:24,926 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-12-03 04:11:24,931 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.12 04:11:24" (1/1) ... [2018-12-03 04:11:24,931 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.12 04:11:24" (1/1) ... [2018-12-03 04:11:24,933 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.12 04:11:24" (1/1) ... [2018-12-03 04:11:24,933 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.12 04:11:24" (1/1) ... [2018-12-03 04:11:24,937 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.12 04:11:24" (1/1) ... [2018-12-03 04:11:24,938 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.12 04:11:24" (1/1) ... [2018-12-03 04:11:24,939 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.12 04:11:24" (1/1) ... [2018-12-03 04:11:24,940 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-12-03 04:11:24,940 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-12-03 04:11:24,940 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-12-03 04:11:24,941 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-12-03 04:11:24,941 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.12 04:11:24" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_be0fb8d2-b6ba-4593-9fc3-2d7fc63a72c5/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 [2018-12-03 04:11:24,971 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.alloc [2018-12-03 04:11:24,971 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2018-12-03 04:11:24,971 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2018-12-03 04:11:24,971 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-12-03 04:11:24,972 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-12-03 04:11:24,972 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-12-03 04:11:24,972 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-12-03 04:11:24,972 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2018-12-03 04:11:24,972 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2018-12-03 04:11:24,972 INFO L130 BoogieDeclarations]: Found specification of procedure entry_point [2018-12-03 04:11:24,972 INFO L138 BoogieDeclarations]: Found implementation of procedure entry_point [2018-12-03 04:11:24,972 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-12-03 04:11:24,972 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-12-03 04:11:25,093 INFO L275 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-12-03 04:11:25,094 INFO L280 CfgBuilder]: Removed 0 assue(true) statements. [2018-12-03 04:11:25,094 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.12 04:11:25 BoogieIcfgContainer [2018-12-03 04:11:25,094 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-12-03 04:11:25,094 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-12-03 04:11:25,094 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-12-03 04:11:25,096 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-12-03 04:11:25,096 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 03.12 04:11:24" (1/3) ... [2018-12-03 04:11:25,097 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@61bf9447 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.12 04:11:25, skipping insertion in model container [2018-12-03 04:11:25,097 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.12 04:11:24" (2/3) ... [2018-12-03 04:11:25,097 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@61bf9447 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.12 04:11:25, skipping insertion in model container [2018-12-03 04:11:25,097 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.12 04:11:25" (3/3) ... [2018-12-03 04:11:25,099 INFO L112 eAbstractionObserver]: Analyzing ICFG memleaks_test4_false-valid-memtrack_true-termination.i [2018-12-03 04:11:25,105 INFO L156 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-12-03 04:11:25,108 INFO L168 ceAbstractionStarter]: Appying trace abstraction to program that has 3 error locations. [2018-12-03 04:11:25,117 INFO L257 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2018-12-03 04:11:25,130 INFO L133 ementStrategyFactory]: Using default assertion order modulation [2018-12-03 04:11:25,130 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-12-03 04:11:25,130 INFO L383 AbstractCegarLoop]: Hoare is false [2018-12-03 04:11:25,130 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-12-03 04:11:25,131 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-12-03 04:11:25,131 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-12-03 04:11:25,131 INFO L387 AbstractCegarLoop]: Difference is false [2018-12-03 04:11:25,131 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-12-03 04:11:25,131 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-12-03 04:11:25,138 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states. [2018-12-03 04:11:25,143 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2018-12-03 04:11:25,144 INFO L394 BasicCegarLoop]: Found error trace [2018-12-03 04:11:25,144 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-03 04:11:25,145 INFO L423 AbstractCegarLoop]: === Iteration 1 === [mainErr0ENSURES_VIOLATIONMEMORY_LEAK, entry_pointErr0ASSERT_VIOLATIONMEMORY_FREE, entry_pointErr1ASSERT_VIOLATIONMEMORY_FREE]=== [2018-12-03 04:11:25,148 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-03 04:11:25,149 INFO L82 PathProgramCache]: Analyzing trace with hash 507056538, now seen corresponding path program 1 times [2018-12-03 04:11:25,151 INFO L223 ckRefinementStrategy]: Switched to mode CVC4_FPBP [2018-12-03 04:11:25,151 INFO L69 tionRefinementEngine]: Using refinement strategy WalrusRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_be0fb8d2-b6ba-4593-9fc3-2d7fc63a72c5/bin-2019/utaipan/cvc4 Starting monitored process 2 with cvc4 --incremental --print-success --lang smt --rewrite-divk (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with cvc4 --incremental --print-success --lang smt --rewrite-divk [2018-12-03 04:11:25,171 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-03 04:11:25,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-03 04:11:25,217 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-03 04:11:25,246 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-03 04:11:25,246 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-12-03 04:11:25,248 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-12-03 04:11:25,248 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-12-03 04:11:25,250 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-12-03 04:11:25,258 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-12-03 04:11:25,258 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-12-03 04:11:25,260 INFO L87 Difference]: Start difference. First operand 26 states. Second operand 5 states. [2018-12-03 04:11:25,289 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-03 04:11:25,289 INFO L93 Difference]: Finished difference Result 38 states and 43 transitions. [2018-12-03 04:11:25,290 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-12-03 04:11:25,291 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 16 [2018-12-03 04:11:25,291 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-03 04:11:25,297 INFO L225 Difference]: With dead ends: 38 [2018-12-03 04:11:25,297 INFO L226 Difference]: Without dead ends: 35 [2018-12-03 04:11:25,298 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-12-03 04:11:25,308 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states. [2018-12-03 04:11:25,322 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 27. [2018-12-03 04:11:25,323 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2018-12-03 04:11:25,324 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 30 transitions. [2018-12-03 04:11:25,324 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 30 transitions. Word has length 16 [2018-12-03 04:11:25,325 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-03 04:11:25,325 INFO L480 AbstractCegarLoop]: Abstraction has 27 states and 30 transitions. [2018-12-03 04:11:25,325 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-12-03 04:11:25,325 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 30 transitions. [2018-12-03 04:11:25,326 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2018-12-03 04:11:25,326 INFO L394 BasicCegarLoop]: Found error trace [2018-12-03 04:11:25,326 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-03 04:11:25,327 INFO L423 AbstractCegarLoop]: === Iteration 2 === [mainErr0ENSURES_VIOLATIONMEMORY_LEAK, entry_pointErr0ASSERT_VIOLATIONMEMORY_FREE, entry_pointErr1ASSERT_VIOLATIONMEMORY_FREE]=== [2018-12-03 04:11:25,327 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-03 04:11:25,327 INFO L82 PathProgramCache]: Analyzing trace with hash -2045100423, now seen corresponding path program 1 times [2018-12-03 04:11:25,327 INFO L223 ckRefinementStrategy]: Switched to mode CVC4_FPBP [2018-12-03 04:11:25,327 INFO L69 tionRefinementEngine]: Using refinement strategy WalrusRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_be0fb8d2-b6ba-4593-9fc3-2d7fc63a72c5/bin-2019/utaipan/cvc4 Starting monitored process 3 with cvc4 --incremental --print-success --lang smt --rewrite-divk (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with cvc4 --incremental --print-success --lang smt --rewrite-divk [2018-12-03 04:11:25,344 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-03 04:11:25,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-03 04:11:25,365 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-03 04:11:25,371 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-03 04:11:25,371 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-12-03 04:11:25,372 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-12-03 04:11:25,372 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-12-03 04:11:25,373 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-12-03 04:11:25,373 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-12-03 04:11:25,373 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-12-03 04:11:25,373 INFO L87 Difference]: Start difference. First operand 27 states and 30 transitions. Second operand 3 states. [2018-12-03 04:11:25,409 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-03 04:11:25,409 INFO L93 Difference]: Finished difference Result 36 states and 40 transitions. [2018-12-03 04:11:25,410 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-12-03 04:11:25,410 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 16 [2018-12-03 04:11:25,410 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-03 04:11:25,410 INFO L225 Difference]: With dead ends: 36 [2018-12-03 04:11:25,410 INFO L226 Difference]: Without dead ends: 33 [2018-12-03 04:11:25,411 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-12-03 04:11:25,411 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33 states. [2018-12-03 04:11:25,413 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33 to 23. [2018-12-03 04:11:25,413 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2018-12-03 04:11:25,414 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 24 transitions. [2018-12-03 04:11:25,414 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 24 transitions. Word has length 16 [2018-12-03 04:11:25,414 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-03 04:11:25,414 INFO L480 AbstractCegarLoop]: Abstraction has 23 states and 24 transitions. [2018-12-03 04:11:25,414 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-12-03 04:11:25,414 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 24 transitions. [2018-12-03 04:11:25,414 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2018-12-03 04:11:25,414 INFO L394 BasicCegarLoop]: Found error trace [2018-12-03 04:11:25,415 INFO L402 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-03 04:11:25,415 INFO L423 AbstractCegarLoop]: === Iteration 3 === [mainErr0ENSURES_VIOLATIONMEMORY_LEAK, entry_pointErr0ASSERT_VIOLATIONMEMORY_FREE, entry_pointErr1ASSERT_VIOLATIONMEMORY_FREE]=== [2018-12-03 04:11:25,415 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-03 04:11:25,415 INFO L82 PathProgramCache]: Analyzing trace with hash -1270707771, now seen corresponding path program 1 times [2018-12-03 04:11:25,415 INFO L223 ckRefinementStrategy]: Switched to mode CVC4_FPBP [2018-12-03 04:11:25,415 INFO L69 tionRefinementEngine]: Using refinement strategy WalrusRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_be0fb8d2-b6ba-4593-9fc3-2d7fc63a72c5/bin-2019/utaipan/cvc4 Starting monitored process 4 with cvc4 --incremental --print-success --lang smt --rewrite-divk (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with cvc4 --incremental --print-success --lang smt --rewrite-divk [2018-12-03 04:11:25,430 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-03 04:11:25,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-03 04:11:25,455 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-03 04:11:25,471 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2018-12-03 04:11:25,471 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-12-03 04:11:25,472 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-12-03 04:11:25,472 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-12-03 04:11:25,472 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-12-03 04:11:25,472 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-12-03 04:11:25,473 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-12-03 04:11:25,473 INFO L87 Difference]: Start difference. First operand 23 states and 24 transitions. Second operand 5 states. [2018-12-03 04:11:25,481 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-03 04:11:25,481 INFO L93 Difference]: Finished difference Result 22 states and 23 transitions. [2018-12-03 04:11:25,481 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-12-03 04:11:25,481 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 20 [2018-12-03 04:11:25,481 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-03 04:11:25,482 INFO L225 Difference]: With dead ends: 22 [2018-12-03 04:11:25,482 INFO L226 Difference]: Without dead ends: 22 [2018-12-03 04:11:25,482 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-12-03 04:11:25,482 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22 states. [2018-12-03 04:11:25,484 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22 to 22. [2018-12-03 04:11:25,484 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2018-12-03 04:11:25,484 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 23 transitions. [2018-12-03 04:11:25,484 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 23 transitions. Word has length 20 [2018-12-03 04:11:25,485 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-03 04:11:25,485 INFO L480 AbstractCegarLoop]: Abstraction has 22 states and 23 transitions. [2018-12-03 04:11:25,485 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-12-03 04:11:25,485 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 23 transitions. [2018-12-03 04:11:25,485 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2018-12-03 04:11:25,485 INFO L394 BasicCegarLoop]: Found error trace [2018-12-03 04:11:25,485 INFO L402 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-03 04:11:25,486 INFO L423 AbstractCegarLoop]: === Iteration 4 === [mainErr0ENSURES_VIOLATIONMEMORY_LEAK, entry_pointErr0ASSERT_VIOLATIONMEMORY_FREE, entry_pointErr1ASSERT_VIOLATIONMEMORY_FREE]=== [2018-12-03 04:11:25,486 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-03 04:11:25,486 INFO L82 PathProgramCache]: Analyzing trace with hash -737235183, now seen corresponding path program 1 times [2018-12-03 04:11:25,486 INFO L223 ckRefinementStrategy]: Switched to mode CVC4_FPBP [2018-12-03 04:11:25,486 INFO L69 tionRefinementEngine]: Using refinement strategy WalrusRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_be0fb8d2-b6ba-4593-9fc3-2d7fc63a72c5/bin-2019/utaipan/cvc4 Starting monitored process 5 with cvc4 --incremental --print-success --lang smt --rewrite-divk (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with cvc4 --incremental --print-success --lang smt --rewrite-divk [2018-12-03 04:11:25,501 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-03 04:11:25,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-03 04:11:25,537 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-03 04:11:25,554 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2018-12-03 04:11:25,555 INFO L267 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2018-12-03 04:11:25,557 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-12-03 04:11:25,557 INFO L202 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:6, output treesize:5 [2018-12-03 04:11:25,573 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2018-12-03 04:11:25,573 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-12-03 04:11:25,574 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-12-03 04:11:25,574 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-12-03 04:11:25,574 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-12-03 04:11:25,574 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-12-03 04:11:25,574 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-12-03 04:11:25,575 INFO L87 Difference]: Start difference. First operand 22 states and 23 transitions. Second operand 5 states. [2018-12-03 04:11:25,608 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-03 04:11:25,608 INFO L93 Difference]: Finished difference Result 27 states and 29 transitions. [2018-12-03 04:11:25,608 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-12-03 04:11:25,609 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 21 [2018-12-03 04:11:25,609 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-03 04:11:25,609 INFO L225 Difference]: With dead ends: 27 [2018-12-03 04:11:25,609 INFO L226 Difference]: Without dead ends: 27 [2018-12-03 04:11:25,609 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-12-03 04:11:25,610 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2018-12-03 04:11:25,611 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 27. [2018-12-03 04:11:25,611 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2018-12-03 04:11:25,612 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 29 transitions. [2018-12-03 04:11:25,612 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 29 transitions. Word has length 21 [2018-12-03 04:11:25,612 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-03 04:11:25,612 INFO L480 AbstractCegarLoop]: Abstraction has 27 states and 29 transitions. [2018-12-03 04:11:25,612 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-12-03 04:11:25,612 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 29 transitions. [2018-12-03 04:11:25,613 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2018-12-03 04:11:25,613 INFO L394 BasicCegarLoop]: Found error trace [2018-12-03 04:11:25,613 INFO L402 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-03 04:11:25,613 INFO L423 AbstractCegarLoop]: === Iteration 5 === [mainErr0ENSURES_VIOLATIONMEMORY_LEAK, entry_pointErr0ASSERT_VIOLATIONMEMORY_FREE, entry_pointErr1ASSERT_VIOLATIONMEMORY_FREE]=== [2018-12-03 04:11:25,613 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-03 04:11:25,613 INFO L82 PathProgramCache]: Analyzing trace with hash -708606032, now seen corresponding path program 1 times [2018-12-03 04:11:25,613 INFO L223 ckRefinementStrategy]: Switched to mode CVC4_FPBP [2018-12-03 04:11:25,614 INFO L69 tionRefinementEngine]: Using refinement strategy WalrusRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_be0fb8d2-b6ba-4593-9fc3-2d7fc63a72c5/bin-2019/utaipan/cvc4 Starting monitored process 6 with cvc4 --incremental --print-success --lang smt --rewrite-divk (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with cvc4 --incremental --print-success --lang smt --rewrite-divk [2018-12-03 04:11:25,627 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-03 04:11:25,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-03 04:11:25,654 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-03 04:11:25,672 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2018-12-03 04:11:25,672 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-12-03 04:11:25,673 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-12-03 04:11:25,673 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-12-03 04:11:25,674 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-12-03 04:11:25,674 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-12-03 04:11:25,674 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-12-03 04:11:25,674 INFO L87 Difference]: Start difference. First operand 27 states and 29 transitions. Second operand 5 states. [2018-12-03 04:11:25,688 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-03 04:11:25,688 INFO L93 Difference]: Finished difference Result 28 states and 30 transitions. [2018-12-03 04:11:25,688 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-12-03 04:11:25,689 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 21 [2018-12-03 04:11:25,689 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-03 04:11:25,689 INFO L225 Difference]: With dead ends: 28 [2018-12-03 04:11:25,689 INFO L226 Difference]: Without dead ends: 28 [2018-12-03 04:11:25,690 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-12-03 04:11:25,690 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states. [2018-12-03 04:11:25,692 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 21. [2018-12-03 04:11:25,692 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2018-12-03 04:11:25,693 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 22 transitions. [2018-12-03 04:11:25,693 INFO L78 Accepts]: Start accepts. Automaton has 21 states and 22 transitions. Word has length 21 [2018-12-03 04:11:25,693 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-03 04:11:25,693 INFO L480 AbstractCegarLoop]: Abstraction has 21 states and 22 transitions. [2018-12-03 04:11:25,693 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-12-03 04:11:25,693 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states and 22 transitions. [2018-12-03 04:11:25,694 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2018-12-03 04:11:25,694 INFO L394 BasicCegarLoop]: Found error trace [2018-12-03 04:11:25,694 INFO L402 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-03 04:11:25,694 INFO L423 AbstractCegarLoop]: === Iteration 6 === [mainErr0ENSURES_VIOLATIONMEMORY_LEAK, entry_pointErr0ASSERT_VIOLATIONMEMORY_FREE, entry_pointErr1ASSERT_VIOLATIONMEMORY_FREE]=== [2018-12-03 04:11:25,695 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-03 04:11:25,695 INFO L82 PathProgramCache]: Analyzing trace with hash 1489472757, now seen corresponding path program 1 times [2018-12-03 04:11:25,695 INFO L223 ckRefinementStrategy]: Switched to mode CVC4_FPBP [2018-12-03 04:11:25,695 INFO L69 tionRefinementEngine]: Using refinement strategy WalrusRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_be0fb8d2-b6ba-4593-9fc3-2d7fc63a72c5/bin-2019/utaipan/cvc4 Starting monitored process 7 with cvc4 --incremental --print-success --lang smt --rewrite-divk (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with cvc4 --incremental --print-success --lang smt --rewrite-divk [2018-12-03 04:11:25,710 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-03 04:11:25,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-12-03 04:11:25,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-12-03 04:11:25,825 INFO L469 BasicCegarLoop]: Counterexample might be feasible [2018-12-03 04:11:25,833 WARN L416 cessorBacktranslator]: Generated EnsuresSpecification ensures #valid == old(#valid); is not ensure(true) [2018-12-03 04:11:25,838 WARN L1298 BoogieBacktranslator]: Unfinished Backtranslation: BitvecLiteral 0bv32 could not be translated for associated CType STRUCT~~ldv_list_head?next~*ldv_list_head?prev~*ldv_list_head# [2018-12-03 04:11:25,839 WARN L1298 BoogieBacktranslator]: Unfinished Backtranslation: BitvecLiteral 0bv32 could not be translated for associated CType STRUCT~~ldv_list_head?next~*ldv_list_head?prev~*ldv_list_head# [2018-12-03 04:11:25,844 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 03.12 04:11:25 BoogieIcfgContainer [2018-12-03 04:11:25,844 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-12-03 04:11:25,844 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2018-12-03 04:11:25,844 INFO L271 PluginConnector]: Initializing Witness Printer... [2018-12-03 04:11:25,844 INFO L276 PluginConnector]: Witness Printer initialized [2018-12-03 04:11:25,845 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.12 04:11:25" (3/4) ... [2018-12-03 04:11:25,847 INFO L147 WitnessPrinter]: No result that supports witness generation found [2018-12-03 04:11:25,847 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2018-12-03 04:11:25,848 INFO L168 Benchmark]: Toolchain (without parser) took 1303.73 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 140.0 MB). Free memory was 938.0 MB in the beginning and 961.6 MB in the end (delta: -23.6 MB). Peak memory consumption was 116.4 MB. Max. memory is 11.5 GB. [2018-12-03 04:11:25,849 INFO L168 Benchmark]: CDTParser took 0.20 ms. Allocated memory is still 1.0 GB. Free memory is still 972.9 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-12-03 04:11:25,849 INFO L168 Benchmark]: CACSL2BoogieTranslator took 359.07 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 140.0 MB). Free memory was 938.0 MB in the beginning and 1.1 GB in the end (delta: -175.9 MB). Peak memory consumption was 32.3 MB. Max. memory is 11.5 GB. [2018-12-03 04:11:25,850 INFO L168 Benchmark]: Boogie Procedure Inliner took 21.01 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 6.7 MB). Peak memory consumption was 6.7 MB. Max. memory is 11.5 GB. [2018-12-03 04:11:25,850 INFO L168 Benchmark]: Boogie Preprocessor took 14.59 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. [2018-12-03 04:11:25,850 INFO L168 Benchmark]: RCFGBuilder took 153.59 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: 24.5 MB). Peak memory consumption was 24.5 MB. Max. memory is 11.5 GB. [2018-12-03 04:11:25,851 INFO L168 Benchmark]: TraceAbstraction took 749.69 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 961.6 MB in the end (delta: 121.2 MB). Peak memory consumption was 121.2 MB. Max. memory is 11.5 GB. [2018-12-03 04:11:25,851 INFO L168 Benchmark]: Witness Printer took 3.19 ms. Allocated memory is still 1.2 GB. Free memory is still 961.6 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-12-03 04:11:25,853 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.20 ms. Allocated memory is still 1.0 GB. Free memory is still 972.9 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 359.07 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 140.0 MB). Free memory was 938.0 MB in the beginning and 1.1 GB in the end (delta: -175.9 MB). Peak memory consumption was 32.3 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 21.01 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 6.7 MB). Peak memory consumption was 6.7 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 14.59 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 153.59 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: 24.5 MB). Peak memory consumption was 24.5 MB. Max. memory is 11.5 GB. * TraceAbstraction took 749.69 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 961.6 MB in the end (delta: 121.2 MB). Peak memory consumption was 121.2 MB. Max. memory is 11.5 GB. * Witness Printer took 3.19 ms. Allocated memory is still 1.2 GB. Free memory is still 961.6 MB. There was no memory consumed. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.boogie.preprocessor: - GenericResult: Unfinished Backtranslation Generated EnsuresSpecification ensures #valid == old(#valid); is not ensure(true) * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: BitvecLiteral 0bv32 could not be translated for associated CType STRUCT~~ldv_list_head?next~*ldv_list_head?prev~*ldv_list_head# - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: BitvecLiteral 0bv32 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: - UnprovableResult [Line: 1443]: Unable to prove that all allocated memory was freed Unable to prove that all allocated memory was freed Reason: overapproximation of memtrack at line 1443. Possible FailurePath: [L1135] struct ldv_list_head ldv_global_msg_list = { &(ldv_global_msg_list), &(ldv_global_msg_list) }; VAL [\old(ldv_global_msg_list)=null, \old(ldv_global_msg_list)=null, ldv_global_msg_list={-1073398731:0}] [L1444] CALL entry_point() VAL [ldv_global_msg_list={-1073398731:0}] [L1435] CALL, EXPR ldv_malloc(sizeof(int)) VAL [\old(size)=4, ldv_global_msg_list={-1073398731:0}] [L1073] COND TRUE __VERIFIER_nondet_int() [L1074] return malloc(size); VAL [\old(size)=4, \result={1140931637:0}, ldv_global_msg_list={-1073398731:0}, malloc(size)={1140931637:0}, size=4] [L1435] RET, EXPR ldv_malloc(sizeof(int)) VAL [ldv_global_msg_list={-1073398731:0}, ldv_malloc(sizeof(int))={1140931637:0}] [L1435] int *p = (int *)ldv_malloc(sizeof(int)); [L1436] COND TRUE \read(*p) VAL [ldv_global_msg_list={-1073398731:0}, p={1140931637:0}] [L1437] CALL, EXPR ldv_malloc(sizeof(int)) VAL [\old(size)=4, ldv_global_msg_list={-1073398731:0}] [L1073] COND TRUE __VERIFIER_nondet_int() [L1074] return malloc(size); VAL [\old(size)=4, \result={-1006502939:0}, ldv_global_msg_list={-1073398731:0}, malloc(size)={-1006502939:0}, size=4] [L1437] RET, EXPR ldv_malloc(sizeof(int)) VAL [ldv_global_msg_list={-1073398731:0}, ldv_malloc(sizeof(int))={-1006502939:0}, p={1140931637:0}] [L1437] int *q = (int *)ldv_malloc(sizeof(int)); [L1438] free(q) VAL [ldv_global_msg_list={-1073398731:0}, p={1140931637:0}, q={-1006502939:0}] [L1438] free(q) [L1444] RET entry_point() VAL [ldv_global_msg_list={-1073398731:0}] - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 26 locations, 3 error locations. UNSAFE Result, 0.7s OverallTime, 6 OverallIterations, 2 TraceHistogramMax, 0.1s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 130 SDtfs, 18 SDslu, 268 SDs, 0 SdLazy, 68 SolverSat, 4 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 89 GetRequests, 76 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=27occurred in iteration=1, 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, 5 MinimizatonAttempts, 25 StatesRemovedByMinimization, 3 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.1s InterpolantComputationTime, 118 NumberOfCodeBlocks, 118 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 89 ConstructedInterpolants, 0 QuantifiedInterpolants, 3073 SizeOfPredicates, 3 NumberOfNonLiveVariables, 352 ConjunctsInSsa, 25 ConjunctsInUnsatCore, 5 InterpolantComputations, 5 PerfectInterpolantSequences, 12/12 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces Received shutdown request...