./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_f8f2374f-b266-4e10-8dd7-622a8f812039/bin-2019/utaipan/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/working_dir_f8f2374f-b266-4e10-8dd7-622a8f812039/bin-2019/utaipan/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/working_dir_f8f2374f-b266-4e10-8dd7-622a8f812039/bin-2019/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/working_dir_f8f2374f-b266-4e10-8dd7-622a8f812039/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_f8f2374f-b266-4e10-8dd7-622a8f812039/bin-2019/utaipan/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/working_dir_f8f2374f-b266-4e10-8dd7-622a8f812039/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_f8f2374f-b266-4e10-8dd7-622a8f812039/bin-2019/utaipan/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/working_dir_f8f2374f-b266-4e10-8dd7-622a8f812039/bin-2019/utaipan/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/working_dir_f8f2374f-b266-4e10-8dd7-622a8f812039/bin-2019/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/working_dir_f8f2374f-b266-4e10-8dd7-622a8f812039/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_f8f2374f-b266-4e10-8dd7-622a8f812039/bin-2019/utaipan/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/working_dir_f8f2374f-b266-4e10-8dd7-622a8f812039/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 [2018-12-09 17:38:09,868 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-12-09 17:38:09,869 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-12-09 17:38:09,875 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-12-09 17:38:09,875 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-12-09 17:38:09,876 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-12-09 17:38:09,877 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-12-09 17:38:09,878 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-12-09 17:38:09,878 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-12-09 17:38:09,879 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-12-09 17:38:09,879 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-12-09 17:38:09,879 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-12-09 17:38:09,880 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-12-09 17:38:09,880 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-12-09 17:38:09,881 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-12-09 17:38:09,881 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-12-09 17:38:09,882 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-12-09 17:38:09,883 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-12-09 17:38:09,884 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-12-09 17:38:09,884 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-12-09 17:38:09,885 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-12-09 17:38:09,886 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-12-09 17:38:09,887 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-12-09 17:38:09,887 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-12-09 17:38:09,887 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-12-09 17:38:09,887 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-12-09 17:38:09,888 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-12-09 17:38:09,888 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-12-09 17:38:09,889 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-12-09 17:38:09,889 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-12-09 17:38:09,889 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-12-09 17:38:09,890 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-12-09 17:38:09,890 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-12-09 17:38:09,890 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-12-09 17:38:09,891 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-12-09 17:38:09,891 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-12-09 17:38:09,891 INFO L98 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/working_dir_f8f2374f-b266-4e10-8dd7-622a8f812039/bin-2019/utaipan/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Default.epf [2018-12-09 17:38:09,898 INFO L110 SettingsManager]: Loading preferences was successful [2018-12-09 17:38:09,898 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-12-09 17:38:09,899 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-12-09 17:38:09,899 INFO L133 SettingsManager]: * ... calls to implemented procedures=ONLY_FOR_CONCURRENT_PROGRAMS [2018-12-09 17:38:09,899 INFO L133 SettingsManager]: * User list type=DISABLED [2018-12-09 17:38:09,899 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-12-09 17:38:09,899 INFO L133 SettingsManager]: * Explicit value domain=true [2018-12-09 17:38:09,899 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-12-09 17:38:09,899 INFO L133 SettingsManager]: * Octagon Domain=false [2018-12-09 17:38:09,899 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-12-09 17:38:09,900 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-12-09 17:38:09,900 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-12-09 17:38:09,900 INFO L133 SettingsManager]: * Interval Domain=false [2018-12-09 17:38:09,900 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-12-09 17:38:09,900 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-12-09 17:38:09,900 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-12-09 17:38:09,900 INFO L133 SettingsManager]: * sizeof long=4 [2018-12-09 17:38:09,900 INFO L133 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2018-12-09 17:38:09,901 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-12-09 17:38:09,901 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-12-09 17:38:09,901 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-12-09 17:38:09,901 INFO L133 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2018-12-09 17:38:09,901 INFO L133 SettingsManager]: * Bitprecise bitfields=true [2018-12-09 17:38:09,901 INFO L133 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2018-12-09 17:38:09,901 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-12-09 17:38:09,901 INFO L133 SettingsManager]: * sizeof long double=12 [2018-12-09 17:38:09,901 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-12-09 17:38:09,901 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-12-09 17:38:09,901 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-12-09 17:38:09,902 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-12-09 17:38:09,902 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-12-09 17:38:09,902 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-12-09 17:38:09,902 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-12-09 17:38:09,902 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-12-09 17:38:09,902 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-12-09 17:38:09,902 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-12-09 17:38:09,902 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_f8f2374f-b266-4e10-8dd7-622a8f812039/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 [2018-12-09 17:38:09,919 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-12-09 17:38:09,926 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-12-09 17:38:09,928 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-12-09 17:38:09,928 INFO L271 PluginConnector]: Initializing CDTParser... [2018-12-09 17:38:09,929 INFO L276 PluginConnector]: CDTParser initialized [2018-12-09 17:38:09,929 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/working_dir_f8f2374f-b266-4e10-8dd7-622a8f812039/bin-2019/utaipan/../../sv-benchmarks/c/ldv-memsafety/memleaks_test4_false-valid-memtrack_true-termination.i [2018-12-09 17:38:09,965 INFO L221 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_f8f2374f-b266-4e10-8dd7-622a8f812039/bin-2019/utaipan/data/4c3134136/6fe667d2cefc4b6ba2a9d7c29f80ea00/FLAGf6948ef9b [2018-12-09 17:38:10,379 INFO L307 CDTParser]: Found 1 translation units. [2018-12-09 17:38:10,380 INFO L161 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/working_dir_f8f2374f-b266-4e10-8dd7-622a8f812039/sv-benchmarks/c/ldv-memsafety/memleaks_test4_false-valid-memtrack_true-termination.i [2018-12-09 17:38:10,386 INFO L355 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_f8f2374f-b266-4e10-8dd7-622a8f812039/bin-2019/utaipan/data/4c3134136/6fe667d2cefc4b6ba2a9d7c29f80ea00/FLAGf6948ef9b [2018-12-09 17:38:10,707 INFO L363 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/working_dir_f8f2374f-b266-4e10-8dd7-622a8f812039/bin-2019/utaipan/data/4c3134136/6fe667d2cefc4b6ba2a9d7c29f80ea00 [2018-12-09 17:38:10,712 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-12-09 17:38:10,715 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2018-12-09 17:38:10,716 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-12-09 17:38:10,717 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-12-09 17:38:10,723 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-12-09 17:38:10,725 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.12 05:38:10" (1/1) ... [2018-12-09 17:38:10,730 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4f115b65 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 05:38:10, skipping insertion in model container [2018-12-09 17:38:10,730 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.12 05:38:10" (1/1) ... [2018-12-09 17:38:10,738 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-12-09 17:38:10,759 INFO L176 MainTranslator]: Built tables and reachable declarations [2018-12-09 17:38:10,971 INFO L203 PostProcessor]: Analyzing one entry point: main [2018-12-09 17:38:10,980 INFO L191 MainTranslator]: Completed pre-run [2018-12-09 17:38:11,013 INFO L203 PostProcessor]: Analyzing one entry point: main [2018-12-09 17:38:11,045 INFO L195 MainTranslator]: Completed translation [2018-12-09 17:38:11,045 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 05:38:11 WrapperNode [2018-12-09 17:38:11,045 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-12-09 17:38:11,046 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-12-09 17:38:11,046 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-12-09 17:38:11,046 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-12-09 17:38:11,051 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 05:38:11" (1/1) ... [2018-12-09 17:38:11,061 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 05:38:11" (1/1) ... [2018-12-09 17:38:11,066 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-12-09 17:38:11,067 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-12-09 17:38:11,067 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-12-09 17:38:11,067 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-12-09 17:38:11,072 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 05:38:11" (1/1) ... [2018-12-09 17:38:11,072 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 05:38:11" (1/1) ... [2018-12-09 17:38:11,074 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 05:38:11" (1/1) ... [2018-12-09 17:38:11,074 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 05:38:11" (1/1) ... [2018-12-09 17:38:11,078 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 05:38:11" (1/1) ... [2018-12-09 17:38:11,079 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 05:38:11" (1/1) ... [2018-12-09 17:38:11,079 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 05:38:11" (1/1) ... [2018-12-09 17:38:11,080 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-12-09 17:38:11,081 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-12-09 17:38:11,081 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-12-09 17:38:11,081 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-12-09 17:38:11,081 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 05:38:11" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_f8f2374f-b266-4e10-8dd7-622a8f812039/bin-2019/utaipan/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-12-09 17:38:11,114 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.alloc [2018-12-09 17:38:11,114 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2018-12-09 17:38:11,114 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2018-12-09 17:38:11,114 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-12-09 17:38:11,114 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-12-09 17:38:11,114 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-12-09 17:38:11,114 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-12-09 17:38:11,115 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2018-12-09 17:38:11,115 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2018-12-09 17:38:11,115 INFO L130 BoogieDeclarations]: Found specification of procedure entry_point [2018-12-09 17:38:11,115 INFO L138 BoogieDeclarations]: Found implementation of procedure entry_point [2018-12-09 17:38:11,115 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-12-09 17:38:11,115 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-12-09 17:38:11,236 INFO L275 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-12-09 17:38:11,236 INFO L280 CfgBuilder]: Removed 0 assue(true) statements. [2018-12-09 17:38:11,237 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.12 05:38:11 BoogieIcfgContainer [2018-12-09 17:38:11,237 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-12-09 17:38:11,237 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-12-09 17:38:11,237 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-12-09 17:38:11,241 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-12-09 17:38:11,242 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 09.12 05:38:10" (1/3) ... [2018-12-09 17:38:11,242 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@128d7f30 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.12 05:38:11, skipping insertion in model container [2018-12-09 17:38:11,243 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 05:38:11" (2/3) ... [2018-12-09 17:38:11,243 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@128d7f30 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.12 05:38:11, skipping insertion in model container [2018-12-09 17:38:11,243 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.12 05:38:11" (3/3) ... [2018-12-09 17:38:11,244 INFO L112 eAbstractionObserver]: Analyzing ICFG memleaks_test4_false-valid-memtrack_true-termination.i [2018-12-09 17:38:11,252 INFO L156 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-12-09 17:38:11,256 INFO L168 ceAbstractionStarter]: Appying trace abstraction to program that has 3 error locations. [2018-12-09 17:38:11,266 INFO L257 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2018-12-09 17:38:11,286 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-12-09 17:38:11,286 INFO L383 AbstractCegarLoop]: Hoare is false [2018-12-09 17:38:11,286 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-12-09 17:38:11,286 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-12-09 17:38:11,286 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-12-09 17:38:11,286 INFO L387 AbstractCegarLoop]: Difference is false [2018-12-09 17:38:11,286 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-12-09 17:38:11,286 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-12-09 17:38:11,296 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states. [2018-12-09 17:38:11,303 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2018-12-09 17:38:11,303 INFO L394 BasicCegarLoop]: Found error trace [2018-12-09 17:38:11,303 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-09 17:38:11,305 INFO L423 AbstractCegarLoop]: === Iteration 1 === [mainErr0ENSURES_VIOLATIONMEMORY_LEAK, entry_pointErr0ASSERT_VIOLATIONMEMORY_FREE, entry_pointErr1ASSERT_VIOLATIONMEMORY_FREE]=== [2018-12-09 17:38:11,308 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-09 17:38:11,308 INFO L82 PathProgramCache]: Analyzing trace with hash 507056538, now seen corresponding path program 1 times [2018-12-09 17:38:11,309 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-12-09 17:38:11,342 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-09 17:38:11,342 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-09 17:38:11,342 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-09 17:38:11,342 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-12-09 17:38:11,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-09 17:38:11,432 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-09 17:38:11,433 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-12-09 17:38:11,433 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-12-09 17:38:11,433 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-12-09 17:38:11,436 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-12-09 17:38:11,445 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-12-09 17:38:11,445 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-12-09 17:38:11,446 INFO L87 Difference]: Start difference. First operand 26 states. Second operand 5 states. [2018-12-09 17:38:11,470 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-09 17:38:11,470 INFO L93 Difference]: Finished difference Result 38 states and 43 transitions. [2018-12-09 17:38:11,470 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-12-09 17:38:11,471 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 16 [2018-12-09 17:38:11,471 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-09 17:38:11,478 INFO L225 Difference]: With dead ends: 38 [2018-12-09 17:38:11,478 INFO L226 Difference]: Without dead ends: 35 [2018-12-09 17:38:11,479 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-12-09 17:38:11,489 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states. [2018-12-09 17:38:11,501 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 27. [2018-12-09 17:38:11,502 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2018-12-09 17:38:11,503 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 30 transitions. [2018-12-09 17:38:11,504 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 30 transitions. Word has length 16 [2018-12-09 17:38:11,504 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-09 17:38:11,504 INFO L480 AbstractCegarLoop]: Abstraction has 27 states and 30 transitions. [2018-12-09 17:38:11,504 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-12-09 17:38:11,504 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 30 transitions. [2018-12-09 17:38:11,505 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2018-12-09 17:38:11,505 INFO L394 BasicCegarLoop]: Found error trace [2018-12-09 17:38:11,505 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-09 17:38:11,505 INFO L423 AbstractCegarLoop]: === Iteration 2 === [mainErr0ENSURES_VIOLATIONMEMORY_LEAK, entry_pointErr0ASSERT_VIOLATIONMEMORY_FREE, entry_pointErr1ASSERT_VIOLATIONMEMORY_FREE]=== [2018-12-09 17:38:11,505 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-09 17:38:11,505 INFO L82 PathProgramCache]: Analyzing trace with hash -2045100423, now seen corresponding path program 1 times [2018-12-09 17:38:11,505 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-12-09 17:38:11,507 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-09 17:38:11,507 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-09 17:38:11,507 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-09 17:38:11,507 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-12-09 17:38:11,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-09 17:38:11,531 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-09 17:38:11,531 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-12-09 17:38:11,531 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-12-09 17:38:11,531 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-12-09 17:38:11,532 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-12-09 17:38:11,532 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-12-09 17:38:11,532 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-12-09 17:38:11,532 INFO L87 Difference]: Start difference. First operand 27 states and 30 transitions. Second operand 3 states. [2018-12-09 17:38:11,567 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-09 17:38:11,568 INFO L93 Difference]: Finished difference Result 36 states and 40 transitions. [2018-12-09 17:38:11,568 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-12-09 17:38:11,568 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 16 [2018-12-09 17:38:11,568 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-09 17:38:11,569 INFO L225 Difference]: With dead ends: 36 [2018-12-09 17:38:11,569 INFO L226 Difference]: Without dead ends: 33 [2018-12-09 17:38:11,569 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 [2018-12-09 17:38:11,569 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33 states. [2018-12-09 17:38:11,571 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33 to 23. [2018-12-09 17:38:11,571 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2018-12-09 17:38:11,571 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 24 transitions. [2018-12-09 17:38:11,572 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 24 transitions. Word has length 16 [2018-12-09 17:38:11,572 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-09 17:38:11,572 INFO L480 AbstractCegarLoop]: Abstraction has 23 states and 24 transitions. [2018-12-09 17:38:11,572 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-12-09 17:38:11,572 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 24 transitions. [2018-12-09 17:38:11,572 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2018-12-09 17:38:11,572 INFO L394 BasicCegarLoop]: Found error trace [2018-12-09 17:38:11,572 INFO L402 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-09 17:38:11,573 INFO L423 AbstractCegarLoop]: === Iteration 3 === [mainErr0ENSURES_VIOLATIONMEMORY_LEAK, entry_pointErr0ASSERT_VIOLATIONMEMORY_FREE, entry_pointErr1ASSERT_VIOLATIONMEMORY_FREE]=== [2018-12-09 17:38:11,573 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-09 17:38:11,573 INFO L82 PathProgramCache]: Analyzing trace with hash -1270707771, now seen corresponding path program 1 times [2018-12-09 17:38:11,573 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-12-09 17:38:11,574 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-09 17:38:11,574 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-09 17:38:11,574 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-09 17:38:11,574 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-12-09 17:38:11,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-09 17:38:11,603 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2018-12-09 17:38:11,603 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-12-09 17:38:11,603 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-12-09 17:38:11,604 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-12-09 17:38:11,604 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-12-09 17:38:11,604 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-12-09 17:38:11,604 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-12-09 17:38:11,604 INFO L87 Difference]: Start difference. First operand 23 states and 24 transitions. Second operand 5 states. [2018-12-09 17:38:11,612 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-09 17:38:11,612 INFO L93 Difference]: Finished difference Result 22 states and 23 transitions. [2018-12-09 17:38:11,612 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-12-09 17:38:11,612 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 20 [2018-12-09 17:38:11,613 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-09 17:38:11,613 INFO L225 Difference]: With dead ends: 22 [2018-12-09 17:38:11,613 INFO L226 Difference]: Without dead ends: 22 [2018-12-09 17:38:11,613 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 [2018-12-09 17:38:11,614 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22 states. [2018-12-09 17:38:11,616 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22 to 22. [2018-12-09 17:38:11,616 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2018-12-09 17:38:11,616 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 23 transitions. [2018-12-09 17:38:11,616 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 23 transitions. Word has length 20 [2018-12-09 17:38:11,617 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-09 17:38:11,617 INFO L480 AbstractCegarLoop]: Abstraction has 22 states and 23 transitions. [2018-12-09 17:38:11,617 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-12-09 17:38:11,617 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 23 transitions. [2018-12-09 17:38:11,617 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2018-12-09 17:38:11,617 INFO L394 BasicCegarLoop]: Found error trace [2018-12-09 17:38:11,618 INFO L402 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-09 17:38:11,618 INFO L423 AbstractCegarLoop]: === Iteration 4 === [mainErr0ENSURES_VIOLATIONMEMORY_LEAK, entry_pointErr0ASSERT_VIOLATIONMEMORY_FREE, entry_pointErr1ASSERT_VIOLATIONMEMORY_FREE]=== [2018-12-09 17:38:11,618 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-09 17:38:11,618 INFO L82 PathProgramCache]: Analyzing trace with hash -737235183, now seen corresponding path program 1 times [2018-12-09 17:38:11,618 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-12-09 17:38:11,619 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-09 17:38:11,620 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-09 17:38:11,620 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-09 17:38:11,620 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-12-09 17:38:11,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-09 17:38:11,655 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2018-12-09 17:38:11,655 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-12-09 17:38:11,656 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-12-09 17:38:11,656 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-12-09 17:38:11,656 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-12-09 17:38:11,656 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-12-09 17:38:11,656 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-12-09 17:38:11,656 INFO L87 Difference]: Start difference. First operand 22 states and 23 transitions. Second operand 5 states. [2018-12-09 17:38:11,677 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-09 17:38:11,677 INFO L93 Difference]: Finished difference Result 27 states and 29 transitions. [2018-12-09 17:38:11,677 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-12-09 17:38:11,677 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 21 [2018-12-09 17:38:11,677 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-09 17:38:11,678 INFO L225 Difference]: With dead ends: 27 [2018-12-09 17:38:11,678 INFO L226 Difference]: Without dead ends: 27 [2018-12-09 17:38:11,678 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 [2018-12-09 17:38:11,678 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2018-12-09 17:38:11,679 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 27. [2018-12-09 17:38:11,680 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2018-12-09 17:38:11,680 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 29 transitions. [2018-12-09 17:38:11,680 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 29 transitions. Word has length 21 [2018-12-09 17:38:11,680 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-09 17:38:11,680 INFO L480 AbstractCegarLoop]: Abstraction has 27 states and 29 transitions. [2018-12-09 17:38:11,680 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-12-09 17:38:11,680 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 29 transitions. [2018-12-09 17:38:11,681 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2018-12-09 17:38:11,681 INFO L394 BasicCegarLoop]: Found error trace [2018-12-09 17:38:11,681 INFO L402 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-09 17:38:11,681 INFO L423 AbstractCegarLoop]: === Iteration 5 === [mainErr0ENSURES_VIOLATIONMEMORY_LEAK, entry_pointErr0ASSERT_VIOLATIONMEMORY_FREE, entry_pointErr1ASSERT_VIOLATIONMEMORY_FREE]=== [2018-12-09 17:38:11,681 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-09 17:38:11,681 INFO L82 PathProgramCache]: Analyzing trace with hash -708606032, now seen corresponding path program 1 times [2018-12-09 17:38:11,681 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-12-09 17:38:11,682 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-09 17:38:11,682 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-09 17:38:11,682 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-09 17:38:11,682 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-12-09 17:38:11,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-09 17:38:11,704 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2018-12-09 17:38:11,704 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-12-09 17:38:11,704 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-12-09 17:38:11,704 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-12-09 17:38:11,704 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-12-09 17:38:11,705 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-12-09 17:38:11,705 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-12-09 17:38:11,705 INFO L87 Difference]: Start difference. First operand 27 states and 29 transitions. Second operand 5 states. [2018-12-09 17:38:11,713 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-09 17:38:11,713 INFO L93 Difference]: Finished difference Result 28 states and 30 transitions. [2018-12-09 17:38:11,713 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-12-09 17:38:11,713 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 21 [2018-12-09 17:38:11,713 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-09 17:38:11,714 INFO L225 Difference]: With dead ends: 28 [2018-12-09 17:38:11,714 INFO L226 Difference]: Without dead ends: 28 [2018-12-09 17:38:11,714 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 [2018-12-09 17:38:11,714 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states. [2018-12-09 17:38:11,715 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 21. [2018-12-09 17:38:11,715 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2018-12-09 17:38:11,716 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 22 transitions. [2018-12-09 17:38:11,716 INFO L78 Accepts]: Start accepts. Automaton has 21 states and 22 transitions. Word has length 21 [2018-12-09 17:38:11,716 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-09 17:38:11,716 INFO L480 AbstractCegarLoop]: Abstraction has 21 states and 22 transitions. [2018-12-09 17:38:11,716 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-12-09 17:38:11,716 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states and 22 transitions. [2018-12-09 17:38:11,716 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2018-12-09 17:38:11,716 INFO L394 BasicCegarLoop]: Found error trace [2018-12-09 17:38:11,717 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] [2018-12-09 17:38:11,717 INFO L423 AbstractCegarLoop]: === Iteration 6 === [mainErr0ENSURES_VIOLATIONMEMORY_LEAK, entry_pointErr0ASSERT_VIOLATIONMEMORY_FREE, entry_pointErr1ASSERT_VIOLATIONMEMORY_FREE]=== [2018-12-09 17:38:11,717 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-09 17:38:11,717 INFO L82 PathProgramCache]: Analyzing trace with hash 1489472757, now seen corresponding path program 1 times [2018-12-09 17:38:11,717 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-12-09 17:38:11,718 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-09 17:38:11,718 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-09 17:38:11,718 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-09 17:38:11,718 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-12-09 17:38:11,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-12-09 17:38:11,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-12-09 17:38:11,745 INFO L469 BasicCegarLoop]: Counterexample might be feasible [2018-12-09 17:38:11,752 WARN L416 cessorBacktranslator]: Generated EnsuresSpecification ensures #valid == old(#valid); is not ensure(true) [2018-12-09 17:38:11,757 WARN L1298 BoogieBacktranslator]: Unfinished Backtranslation: IntegerLiteral 10 could not be translated for associated CType STRUCT~~ldv_list_head?next~*ldv_list_head?prev~*ldv_list_head# [2018-12-09 17:38:11,757 WARN L1298 BoogieBacktranslator]: Unfinished Backtranslation: IntegerLiteral 9 could not be translated for associated CType STRUCT~~ldv_list_head?next~*ldv_list_head?prev~*ldv_list_head# [2018-12-09 17:38:11,763 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 09.12 05:38:11 BoogieIcfgContainer [2018-12-09 17:38:11,763 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-12-09 17:38:11,763 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2018-12-09 17:38:11,763 INFO L271 PluginConnector]: Initializing Witness Printer... [2018-12-09 17:38:11,763 INFO L276 PluginConnector]: Witness Printer initialized [2018-12-09 17:38:11,763 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.12 05:38:11" (3/4) ... [2018-12-09 17:38:11,766 INFO L147 WitnessPrinter]: No result that supports witness generation found [2018-12-09 17:38:11,766 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2018-12-09 17:38:11,766 INFO L168 Benchmark]: Toolchain (without parser) took 1053.33 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 120.6 MB). Free memory was 945.9 MB in the beginning and 994.3 MB in the end (delta: -48.4 MB). Peak memory consumption was 72.2 MB. Max. memory is 11.5 GB. [2018-12-09 17:38:11,767 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. [2018-12-09 17:38:11,767 INFO L168 Benchmark]: CACSL2BoogieTranslator took 328.95 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 120.6 MB). Free memory was 945.9 MB in the beginning and 1.1 GB in the end (delta: -141.9 MB). Peak memory consumption was 30.6 MB. Max. memory is 11.5 GB. [2018-12-09 17:38:11,768 INFO L168 Benchmark]: Boogie Procedure Inliner took 20.93 ms. Allocated memory is still 1.1 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. [2018-12-09 17:38:11,768 INFO L168 Benchmark]: Boogie Preprocessor took 13.81 ms. Allocated memory is still 1.1 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. [2018-12-09 17:38:11,768 INFO L168 Benchmark]: RCFGBuilder took 156.08 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 17.5 MB). Peak memory consumption was 17.5 MB. Max. memory is 11.5 GB. [2018-12-09 17:38:11,768 INFO L168 Benchmark]: TraceAbstraction took 525.53 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 994.3 MB in the end (delta: 76.0 MB). Peak memory consumption was 76.0 MB. Max. memory is 11.5 GB. [2018-12-09 17:38:11,769 INFO L168 Benchmark]: Witness Printer took 2.81 ms. Allocated memory is still 1.1 GB. Free memory is still 994.3 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-12-09 17:38:11,770 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 328.95 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 120.6 MB). Free memory was 945.9 MB in the beginning and 1.1 GB in the end (delta: -141.9 MB). Peak memory consumption was 30.6 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 20.93 ms. Allocated memory is still 1.1 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. * Boogie Preprocessor took 13.81 ms. Allocated memory is still 1.1 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. * RCFGBuilder took 156.08 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 17.5 MB). Peak memory consumption was 17.5 MB. Max. memory is 11.5 GB. * TraceAbstraction took 525.53 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 994.3 MB in the end (delta: 76.0 MB). Peak memory consumption was 76.0 MB. Max. memory is 11.5 GB. * Witness Printer took 2.81 ms. Allocated memory is still 1.1 GB. Free memory is still 994.3 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: 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 [2018-12-09 17:38:13,169 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-12-09 17:38:13,170 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-12-09 17:38:13,177 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-12-09 17:38:13,177 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-12-09 17:38:13,178 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-12-09 17:38:13,179 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-12-09 17:38:13,180 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-12-09 17:38:13,181 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-12-09 17:38:13,181 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-12-09 17:38:13,182 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-12-09 17:38:13,182 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-12-09 17:38:13,183 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-12-09 17:38:13,183 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-12-09 17:38:13,184 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-12-09 17:38:13,184 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-12-09 17:38:13,185 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-12-09 17:38:13,186 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-12-09 17:38:13,188 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-12-09 17:38:13,189 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-12-09 17:38:13,189 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-12-09 17:38:13,190 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-12-09 17:38:13,192 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-12-09 17:38:13,192 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-12-09 17:38:13,192 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-12-09 17:38:13,193 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-12-09 17:38:13,193 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-12-09 17:38:13,194 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-12-09 17:38:13,195 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-12-09 17:38:13,195 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-12-09 17:38:13,195 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-12-09 17:38:13,196 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-12-09 17:38:13,196 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-12-09 17:38:13,196 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-12-09 17:38:13,197 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-12-09 17:38:13,197 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-12-09 17:38:13,197 INFO L98 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/working_dir_f8f2374f-b266-4e10-8dd7-622a8f812039/bin-2019/utaipan/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Bitvector.epf [2018-12-09 17:38:13,208 INFO L110 SettingsManager]: Loading preferences was successful [2018-12-09 17:38:13,208 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-12-09 17:38:13,209 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-12-09 17:38:13,209 INFO L133 SettingsManager]: * ... calls to implemented procedures=ONLY_FOR_CONCURRENT_PROGRAMS [2018-12-09 17:38:13,209 INFO L133 SettingsManager]: * User list type=DISABLED [2018-12-09 17:38:13,209 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-12-09 17:38:13,209 INFO L133 SettingsManager]: * Explicit value domain=true [2018-12-09 17:38:13,210 INFO L133 SettingsManager]: * Octagon Domain=false [2018-12-09 17:38:13,210 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-12-09 17:38:13,210 INFO L133 SettingsManager]: * Interval Domain=false [2018-12-09 17:38:13,210 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-12-09 17:38:13,210 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-12-09 17:38:13,210 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-12-09 17:38:13,211 INFO L133 SettingsManager]: * sizeof long=4 [2018-12-09 17:38:13,211 INFO L133 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2018-12-09 17:38:13,211 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-12-09 17:38:13,211 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-12-09 17:38:13,211 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-12-09 17:38:13,211 INFO L133 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2018-12-09 17:38:13,211 INFO L133 SettingsManager]: * Bitprecise bitfields=true [2018-12-09 17:38:13,211 INFO L133 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2018-12-09 17:38:13,211 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-12-09 17:38:13,212 INFO L133 SettingsManager]: * Use bitvectors instead of ints=true [2018-12-09 17:38:13,212 INFO L133 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2018-12-09 17:38:13,212 INFO L133 SettingsManager]: * sizeof long double=12 [2018-12-09 17:38:13,212 INFO L133 SettingsManager]: * Use constant arrays=true [2018-12-09 17:38:13,212 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-12-09 17:38:13,212 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-12-09 17:38:13,212 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-12-09 17:38:13,212 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-12-09 17:38:13,212 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-12-09 17:38:13,212 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-12-09 17:38:13,212 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-12-09 17:38:13,213 INFO L133 SettingsManager]: * Trace refinement strategy=WALRUS [2018-12-09 17:38:13,213 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-12-09 17:38:13,213 INFO L133 SettingsManager]: * Command for external solver=cvc4 --incremental --rewrite-divk --print-success --lang smt [2018-12-09 17:38:13,213 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_f8f2374f-b266-4e10-8dd7-622a8f812039/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 [2018-12-09 17:38:13,236 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-12-09 17:38:13,243 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-12-09 17:38:13,245 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-12-09 17:38:13,246 INFO L271 PluginConnector]: Initializing CDTParser... [2018-12-09 17:38:13,246 INFO L276 PluginConnector]: CDTParser initialized [2018-12-09 17:38:13,247 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/working_dir_f8f2374f-b266-4e10-8dd7-622a8f812039/bin-2019/utaipan/../../sv-benchmarks/c/ldv-memsafety/memleaks_test4_false-valid-memtrack_true-termination.i [2018-12-09 17:38:13,282 INFO L221 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_f8f2374f-b266-4e10-8dd7-622a8f812039/bin-2019/utaipan/data/7555babc4/241095328a7e49efa8a7f75f814079d9/FLAGeefb019dc [2018-12-09 17:38:13,803 INFO L307 CDTParser]: Found 1 translation units. [2018-12-09 17:38:13,803 INFO L161 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/working_dir_f8f2374f-b266-4e10-8dd7-622a8f812039/sv-benchmarks/c/ldv-memsafety/memleaks_test4_false-valid-memtrack_true-termination.i [2018-12-09 17:38:13,810 INFO L355 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_f8f2374f-b266-4e10-8dd7-622a8f812039/bin-2019/utaipan/data/7555babc4/241095328a7e49efa8a7f75f814079d9/FLAGeefb019dc [2018-12-09 17:38:14,267 INFO L363 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/working_dir_f8f2374f-b266-4e10-8dd7-622a8f812039/bin-2019/utaipan/data/7555babc4/241095328a7e49efa8a7f75f814079d9 [2018-12-09 17:38:14,269 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-12-09 17:38:14,270 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2018-12-09 17:38:14,270 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-12-09 17:38:14,270 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-12-09 17:38:14,272 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-12-09 17:38:14,273 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.12 05:38:14" (1/1) ... [2018-12-09 17:38:14,274 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@397a44ae and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 05:38:14, skipping insertion in model container [2018-12-09 17:38:14,275 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.12 05:38:14" (1/1) ... [2018-12-09 17:38:14,279 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-12-09 17:38:14,301 INFO L176 MainTranslator]: Built tables and reachable declarations [2018-12-09 17:38:14,494 INFO L203 PostProcessor]: Analyzing one entry point: main [2018-12-09 17:38:14,506 INFO L191 MainTranslator]: Completed pre-run [2018-12-09 17:38:14,588 INFO L203 PostProcessor]: Analyzing one entry point: main [2018-12-09 17:38:14,622 INFO L195 MainTranslator]: Completed translation [2018-12-09 17:38:14,622 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 05:38:14 WrapperNode [2018-12-09 17:38:14,622 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-12-09 17:38:14,623 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-12-09 17:38:14,623 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-12-09 17:38:14,623 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-12-09 17:38:14,627 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 05:38:14" (1/1) ... [2018-12-09 17:38:14,639 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 05:38:14" (1/1) ... [2018-12-09 17:38:14,644 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-12-09 17:38:14,644 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-12-09 17:38:14,644 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-12-09 17:38:14,644 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-12-09 17:38:14,650 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 05:38:14" (1/1) ... [2018-12-09 17:38:14,650 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 05:38:14" (1/1) ... [2018-12-09 17:38:14,651 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 05:38:14" (1/1) ... [2018-12-09 17:38:14,651 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 05:38:14" (1/1) ... [2018-12-09 17:38:14,655 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 05:38:14" (1/1) ... [2018-12-09 17:38:14,656 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 05:38:14" (1/1) ... [2018-12-09 17:38:14,657 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 05:38:14" (1/1) ... [2018-12-09 17:38:14,658 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-12-09 17:38:14,659 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-12-09 17:38:14,659 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-12-09 17:38:14,659 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-12-09 17:38:14,659 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 05:38:14" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_f8f2374f-b266-4e10-8dd7-622a8f812039/bin-2019/utaipan/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-12-09 17:38:14,689 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.alloc [2018-12-09 17:38:14,689 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2018-12-09 17:38:14,689 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2018-12-09 17:38:14,689 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-12-09 17:38:14,689 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-12-09 17:38:14,689 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-12-09 17:38:14,690 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-12-09 17:38:14,690 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2018-12-09 17:38:14,690 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2018-12-09 17:38:14,690 INFO L130 BoogieDeclarations]: Found specification of procedure entry_point [2018-12-09 17:38:14,690 INFO L138 BoogieDeclarations]: Found implementation of procedure entry_point [2018-12-09 17:38:14,690 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-12-09 17:38:14,690 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-12-09 17:38:14,816 INFO L275 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-12-09 17:38:14,816 INFO L280 CfgBuilder]: Removed 0 assue(true) statements. [2018-12-09 17:38:14,816 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.12 05:38:14 BoogieIcfgContainer [2018-12-09 17:38:14,816 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-12-09 17:38:14,817 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-12-09 17:38:14,817 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-12-09 17:38:14,819 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-12-09 17:38:14,819 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 09.12 05:38:14" (1/3) ... [2018-12-09 17:38:14,819 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6767c9b1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.12 05:38:14, skipping insertion in model container [2018-12-09 17:38:14,819 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 05:38:14" (2/3) ... [2018-12-09 17:38:14,819 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6767c9b1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.12 05:38:14, skipping insertion in model container [2018-12-09 17:38:14,819 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.12 05:38:14" (3/3) ... [2018-12-09 17:38:14,820 INFO L112 eAbstractionObserver]: Analyzing ICFG memleaks_test4_false-valid-memtrack_true-termination.i [2018-12-09 17:38:14,826 INFO L156 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-12-09 17:38:14,829 INFO L168 ceAbstractionStarter]: Appying trace abstraction to program that has 3 error locations. [2018-12-09 17:38:14,838 INFO L257 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2018-12-09 17:38:14,851 INFO L133 ementStrategyFactory]: Using default assertion order modulation [2018-12-09 17:38:14,851 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-12-09 17:38:14,851 INFO L383 AbstractCegarLoop]: Hoare is false [2018-12-09 17:38:14,852 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-12-09 17:38:14,852 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-12-09 17:38:14,852 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-12-09 17:38:14,852 INFO L387 AbstractCegarLoop]: Difference is false [2018-12-09 17:38:14,852 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-12-09 17:38:14,852 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-12-09 17:38:14,859 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states. [2018-12-09 17:38:14,864 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2018-12-09 17:38:14,864 INFO L394 BasicCegarLoop]: Found error trace [2018-12-09 17:38:14,865 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-09 17:38:14,866 INFO L423 AbstractCegarLoop]: === Iteration 1 === [mainErr0ENSURES_VIOLATIONMEMORY_LEAK, entry_pointErr0ASSERT_VIOLATIONMEMORY_FREE, entry_pointErr1ASSERT_VIOLATIONMEMORY_FREE]=== [2018-12-09 17:38:14,869 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-09 17:38:14,869 INFO L82 PathProgramCache]: Analyzing trace with hash 507056538, now seen corresponding path program 1 times [2018-12-09 17:38:14,872 INFO L223 ckRefinementStrategy]: Switched to mode CVC4_FPBP [2018-12-09 17:38:14,872 INFO L69 tionRefinementEngine]: Using refinement strategy WalrusRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_f8f2374f-b266-4e10-8dd7-622a8f812039/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 [2018-12-09 17:38:14,890 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-09 17:38:14,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-09 17:38:14,937 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-09 17:38:14,970 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-09 17:38:14,970 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-12-09 17:38:14,972 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-12-09 17:38:14,972 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-12-09 17:38:14,974 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-12-09 17:38:14,982 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-12-09 17:38:14,982 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-12-09 17:38:14,984 INFO L87 Difference]: Start difference. First operand 26 states. Second operand 5 states. [2018-12-09 17:38:15,026 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-09 17:38:15,026 INFO L93 Difference]: Finished difference Result 38 states and 43 transitions. [2018-12-09 17:38:15,027 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-12-09 17:38:15,028 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 16 [2018-12-09 17:38:15,028 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-09 17:38:15,036 INFO L225 Difference]: With dead ends: 38 [2018-12-09 17:38:15,036 INFO L226 Difference]: Without dead ends: 35 [2018-12-09 17:38:15,037 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 [2018-12-09 17:38:15,050 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states. [2018-12-09 17:38:15,062 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 27. [2018-12-09 17:38:15,063 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2018-12-09 17:38:15,063 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 30 transitions. [2018-12-09 17:38:15,064 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 30 transitions. Word has length 16 [2018-12-09 17:38:15,064 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-09 17:38:15,064 INFO L480 AbstractCegarLoop]: Abstraction has 27 states and 30 transitions. [2018-12-09 17:38:15,064 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-12-09 17:38:15,064 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 30 transitions. [2018-12-09 17:38:15,065 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2018-12-09 17:38:15,065 INFO L394 BasicCegarLoop]: Found error trace [2018-12-09 17:38:15,066 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-09 17:38:15,066 INFO L423 AbstractCegarLoop]: === Iteration 2 === [mainErr0ENSURES_VIOLATIONMEMORY_LEAK, entry_pointErr0ASSERT_VIOLATIONMEMORY_FREE, entry_pointErr1ASSERT_VIOLATIONMEMORY_FREE]=== [2018-12-09 17:38:15,066 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-09 17:38:15,066 INFO L82 PathProgramCache]: Analyzing trace with hash -2045100423, now seen corresponding path program 1 times [2018-12-09 17:38:15,066 INFO L223 ckRefinementStrategy]: Switched to mode CVC4_FPBP [2018-12-09 17:38:15,067 INFO L69 tionRefinementEngine]: Using refinement strategy WalrusRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_f8f2374f-b266-4e10-8dd7-622a8f812039/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 [2018-12-09 17:38:15,082 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-09 17:38:15,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-09 17:38:15,103 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-09 17:38:15,111 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-09 17:38:15,112 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-12-09 17:38:15,113 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-12-09 17:38:15,113 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-12-09 17:38:15,114 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-12-09 17:38:15,114 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-12-09 17:38:15,114 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-12-09 17:38:15,115 INFO L87 Difference]: Start difference. First operand 27 states and 30 transitions. Second operand 3 states. [2018-12-09 17:38:15,153 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-09 17:38:15,154 INFO L93 Difference]: Finished difference Result 36 states and 40 transitions. [2018-12-09 17:38:15,154 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-12-09 17:38:15,154 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 16 [2018-12-09 17:38:15,154 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-09 17:38:15,155 INFO L225 Difference]: With dead ends: 36 [2018-12-09 17:38:15,155 INFO L226 Difference]: Without dead ends: 33 [2018-12-09 17:38:15,156 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 [2018-12-09 17:38:15,156 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33 states. [2018-12-09 17:38:15,159 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33 to 23. [2018-12-09 17:38:15,159 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2018-12-09 17:38:15,160 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 24 transitions. [2018-12-09 17:38:15,160 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 24 transitions. Word has length 16 [2018-12-09 17:38:15,160 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-09 17:38:15,160 INFO L480 AbstractCegarLoop]: Abstraction has 23 states and 24 transitions. [2018-12-09 17:38:15,160 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-12-09 17:38:15,160 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 24 transitions. [2018-12-09 17:38:15,161 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2018-12-09 17:38:15,161 INFO L394 BasicCegarLoop]: Found error trace [2018-12-09 17:38:15,161 INFO L402 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-09 17:38:15,161 INFO L423 AbstractCegarLoop]: === Iteration 3 === [mainErr0ENSURES_VIOLATIONMEMORY_LEAK, entry_pointErr0ASSERT_VIOLATIONMEMORY_FREE, entry_pointErr1ASSERT_VIOLATIONMEMORY_FREE]=== [2018-12-09 17:38:15,162 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-09 17:38:15,162 INFO L82 PathProgramCache]: Analyzing trace with hash -1270707771, now seen corresponding path program 1 times [2018-12-09 17:38:15,162 INFO L223 ckRefinementStrategy]: Switched to mode CVC4_FPBP [2018-12-09 17:38:15,162 INFO L69 tionRefinementEngine]: Using refinement strategy WalrusRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_f8f2374f-b266-4e10-8dd7-622a8f812039/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 [2018-12-09 17:38:15,177 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-09 17:38:15,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-09 17:38:15,202 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-09 17:38:15,223 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2018-12-09 17:38:15,223 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-12-09 17:38:15,224 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-12-09 17:38:15,224 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-12-09 17:38:15,225 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-12-09 17:38:15,225 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-12-09 17:38:15,225 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-12-09 17:38:15,225 INFO L87 Difference]: Start difference. First operand 23 states and 24 transitions. Second operand 5 states. [2018-12-09 17:38:15,234 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-09 17:38:15,235 INFO L93 Difference]: Finished difference Result 22 states and 23 transitions. [2018-12-09 17:38:15,235 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-12-09 17:38:15,235 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 20 [2018-12-09 17:38:15,235 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-09 17:38:15,236 INFO L225 Difference]: With dead ends: 22 [2018-12-09 17:38:15,236 INFO L226 Difference]: Without dead ends: 22 [2018-12-09 17:38:15,236 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 [2018-12-09 17:38:15,236 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22 states. [2018-12-09 17:38:15,238 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22 to 22. [2018-12-09 17:38:15,238 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2018-12-09 17:38:15,239 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 23 transitions. [2018-12-09 17:38:15,239 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 23 transitions. Word has length 20 [2018-12-09 17:38:15,239 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-09 17:38:15,239 INFO L480 AbstractCegarLoop]: Abstraction has 22 states and 23 transitions. [2018-12-09 17:38:15,239 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-12-09 17:38:15,239 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 23 transitions. [2018-12-09 17:38:15,240 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2018-12-09 17:38:15,240 INFO L394 BasicCegarLoop]: Found error trace [2018-12-09 17:38:15,240 INFO L402 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-09 17:38:15,240 INFO L423 AbstractCegarLoop]: === Iteration 4 === [mainErr0ENSURES_VIOLATIONMEMORY_LEAK, entry_pointErr0ASSERT_VIOLATIONMEMORY_FREE, entry_pointErr1ASSERT_VIOLATIONMEMORY_FREE]=== [2018-12-09 17:38:15,241 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-09 17:38:15,241 INFO L82 PathProgramCache]: Analyzing trace with hash -737235183, now seen corresponding path program 1 times [2018-12-09 17:38:15,241 INFO L223 ckRefinementStrategy]: Switched to mode CVC4_FPBP [2018-12-09 17:38:15,241 INFO L69 tionRefinementEngine]: Using refinement strategy WalrusRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_f8f2374f-b266-4e10-8dd7-622a8f812039/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 [2018-12-09 17:38:15,257 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-09 17:38:15,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-09 17:38:15,296 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-09 17:38:15,313 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 [2018-12-09 17:38:15,314 INFO L267 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2018-12-09 17:38:15,317 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-12-09 17:38:15,317 INFO L202 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:6, output treesize:5 [2018-12-09 17:38:15,331 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2018-12-09 17:38:15,331 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-12-09 17:38:15,332 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-12-09 17:38:15,332 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-12-09 17:38:15,332 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-12-09 17:38:15,332 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-12-09 17:38:15,332 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-12-09 17:38:15,333 INFO L87 Difference]: Start difference. First operand 22 states and 23 transitions. Second operand 5 states. [2018-12-09 17:38:15,367 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-09 17:38:15,367 INFO L93 Difference]: Finished difference Result 27 states and 29 transitions. [2018-12-09 17:38:15,368 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-12-09 17:38:15,368 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 21 [2018-12-09 17:38:15,368 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-09 17:38:15,369 INFO L225 Difference]: With dead ends: 27 [2018-12-09 17:38:15,369 INFO L226 Difference]: Without dead ends: 27 [2018-12-09 17:38:15,369 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 [2018-12-09 17:38:15,369 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2018-12-09 17:38:15,372 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 27. [2018-12-09 17:38:15,372 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2018-12-09 17:38:15,372 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 29 transitions. [2018-12-09 17:38:15,372 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 29 transitions. Word has length 21 [2018-12-09 17:38:15,373 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-09 17:38:15,373 INFO L480 AbstractCegarLoop]: Abstraction has 27 states and 29 transitions. [2018-12-09 17:38:15,373 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-12-09 17:38:15,373 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 29 transitions. [2018-12-09 17:38:15,374 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2018-12-09 17:38:15,374 INFO L394 BasicCegarLoop]: Found error trace [2018-12-09 17:38:15,374 INFO L402 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-09 17:38:15,374 INFO L423 AbstractCegarLoop]: === Iteration 5 === [mainErr0ENSURES_VIOLATIONMEMORY_LEAK, entry_pointErr0ASSERT_VIOLATIONMEMORY_FREE, entry_pointErr1ASSERT_VIOLATIONMEMORY_FREE]=== [2018-12-09 17:38:15,374 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-09 17:38:15,375 INFO L82 PathProgramCache]: Analyzing trace with hash -708606032, now seen corresponding path program 1 times [2018-12-09 17:38:15,375 INFO L223 ckRefinementStrategy]: Switched to mode CVC4_FPBP [2018-12-09 17:38:15,375 INFO L69 tionRefinementEngine]: Using refinement strategy WalrusRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_f8f2374f-b266-4e10-8dd7-622a8f812039/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 [2018-12-09 17:38:15,390 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-09 17:38:15,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-09 17:38:15,411 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-09 17:38:15,426 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2018-12-09 17:38:15,426 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-12-09 17:38:15,427 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-12-09 17:38:15,428 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-12-09 17:38:15,428 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-12-09 17:38:15,428 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-12-09 17:38:15,428 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-12-09 17:38:15,429 INFO L87 Difference]: Start difference. First operand 27 states and 29 transitions. Second operand 5 states. [2018-12-09 17:38:15,444 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-09 17:38:15,444 INFO L93 Difference]: Finished difference Result 28 states and 30 transitions. [2018-12-09 17:38:15,445 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-12-09 17:38:15,445 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 21 [2018-12-09 17:38:15,445 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-09 17:38:15,446 INFO L225 Difference]: With dead ends: 28 [2018-12-09 17:38:15,446 INFO L226 Difference]: Without dead ends: 28 [2018-12-09 17:38:15,446 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 [2018-12-09 17:38:15,446 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states. [2018-12-09 17:38:15,449 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 21. [2018-12-09 17:38:15,449 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2018-12-09 17:38:15,449 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 22 transitions. [2018-12-09 17:38:15,449 INFO L78 Accepts]: Start accepts. Automaton has 21 states and 22 transitions. Word has length 21 [2018-12-09 17:38:15,450 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-09 17:38:15,450 INFO L480 AbstractCegarLoop]: Abstraction has 21 states and 22 transitions. [2018-12-09 17:38:15,450 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-12-09 17:38:15,450 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states and 22 transitions. [2018-12-09 17:38:15,451 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2018-12-09 17:38:15,451 INFO L394 BasicCegarLoop]: Found error trace [2018-12-09 17:38:15,451 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] [2018-12-09 17:38:15,451 INFO L423 AbstractCegarLoop]: === Iteration 6 === [mainErr0ENSURES_VIOLATIONMEMORY_LEAK, entry_pointErr0ASSERT_VIOLATIONMEMORY_FREE, entry_pointErr1ASSERT_VIOLATIONMEMORY_FREE]=== [2018-12-09 17:38:15,451 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-09 17:38:15,452 INFO L82 PathProgramCache]: Analyzing trace with hash 1489472757, now seen corresponding path program 1 times [2018-12-09 17:38:15,452 INFO L223 ckRefinementStrategy]: Switched to mode CVC4_FPBP [2018-12-09 17:38:15,452 INFO L69 tionRefinementEngine]: Using refinement strategy WalrusRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_f8f2374f-b266-4e10-8dd7-622a8f812039/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 [2018-12-09 17:38:15,474 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-09 17:38:15,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-12-09 17:38:15,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-12-09 17:38:15,602 INFO L469 BasicCegarLoop]: Counterexample might be feasible [2018-12-09 17:38:15,613 WARN L416 cessorBacktranslator]: Generated EnsuresSpecification ensures #valid == old(#valid); is not ensure(true) [2018-12-09 17:38:15,620 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# [2018-12-09 17:38:15,620 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# [2018-12-09 17:38:15,627 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 09.12 05:38:15 BoogieIcfgContainer [2018-12-09 17:38:15,627 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-12-09 17:38:15,627 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2018-12-09 17:38:15,627 INFO L271 PluginConnector]: Initializing Witness Printer... [2018-12-09 17:38:15,627 INFO L276 PluginConnector]: Witness Printer initialized [2018-12-09 17:38:15,628 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.12 05:38:14" (3/4) ... [2018-12-09 17:38:15,630 INFO L147 WitnessPrinter]: No result that supports witness generation found [2018-12-09 17:38:15,630 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2018-12-09 17:38:15,631 INFO L168 Benchmark]: Toolchain (without parser) took 1361.49 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 129.0 MB). Free memory was 938.0 MB in the beginning and 964.1 MB in the end (delta: -26.1 MB). Peak memory consumption was 102.8 MB. Max. memory is 11.5 GB. [2018-12-09 17:38:15,632 INFO L168 Benchmark]: CDTParser took 0.14 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. [2018-12-09 17:38:15,632 INFO L168 Benchmark]: CACSL2BoogieTranslator took 352.08 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 129.0 MB). Free memory was 938.0 MB in the beginning and 1.1 GB in the end (delta: -157.1 MB). Peak memory consumption was 37.6 MB. Max. memory is 11.5 GB. [2018-12-09 17:38:15,632 INFO L168 Benchmark]: Boogie Procedure Inliner took 21.47 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. [2018-12-09 17:38:15,632 INFO L168 Benchmark]: Boogie Preprocessor took 14.37 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. [2018-12-09 17:38:15,633 INFO L168 Benchmark]: RCFGBuilder took 157.81 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: 17.6 MB). Peak memory consumption was 17.6 MB. Max. memory is 11.5 GB. [2018-12-09 17:38:15,633 INFO L168 Benchmark]: TraceAbstraction took 809.99 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 964.1 MB in the end (delta: 113.3 MB). Peak memory consumption was 113.3 MB. Max. memory is 11.5 GB. [2018-12-09 17:38:15,633 INFO L168 Benchmark]: Witness Printer took 3.10 ms. Allocated memory is still 1.2 GB. Free memory is still 964.1 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-12-09 17:38:15,635 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.14 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 352.08 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 129.0 MB). Free memory was 938.0 MB in the beginning and 1.1 GB in the end (delta: -157.1 MB). Peak memory consumption was 37.6 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 21.47 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 14.37 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 157.81 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: 17.6 MB). Peak memory consumption was 17.6 MB. Max. memory is 11.5 GB. * TraceAbstraction took 809.99 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 964.1 MB in the end (delta: 113.3 MB). Peak memory consumption was 113.3 MB. Max. memory is 11.5 GB. * Witness Printer took 3.10 ms. Allocated memory is still 1.2 GB. Free memory is still 964.1 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...