./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/ldv-memsafety/memleaks_test16_1_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_1b06fe49-d1a0-432e-94c9-1285c68ec7f1/bin-2019/utaipan/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/working_dir_1b06fe49-d1a0-432e-94c9-1285c68ec7f1/bin-2019/utaipan/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/working_dir_1b06fe49-d1a0-432e-94c9-1285c68ec7f1/bin-2019/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/working_dir_1b06fe49-d1a0-432e-94c9-1285c68ec7f1/bin-2019/utaipan/config/TaipanMemDerefMemtrack.xml -i ../../sv-benchmarks/c/ldv-memsafety/memleaks_test16_1_false-valid-memtrack_true-termination.i -s /tmp/vcloud-vcloud-master/worker/working_dir_1b06fe49-d1a0-432e-94c9-1285c68ec7f1/bin-2019/utaipan/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/working_dir_1b06fe49-d1a0-432e-94c9-1285c68ec7f1/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 2f0c9e4422072780ec01f7265ef9ade742466ed9 .............................................................................................................................................................................................................................................................................................................................................................................................................. 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_1b06fe49-d1a0-432e-94c9-1285c68ec7f1/bin-2019/utaipan/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/working_dir_1b06fe49-d1a0-432e-94c9-1285c68ec7f1/bin-2019/utaipan/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/working_dir_1b06fe49-d1a0-432e-94c9-1285c68ec7f1/bin-2019/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/working_dir_1b06fe49-d1a0-432e-94c9-1285c68ec7f1/bin-2019/utaipan/config/TaipanMemDerefMemtrack.xml -i ../../sv-benchmarks/c/ldv-memsafety/memleaks_test16_1_false-valid-memtrack_true-termination.i -s /tmp/vcloud-vcloud-master/worker/working_dir_1b06fe49-d1a0-432e-94c9-1285c68ec7f1/bin-2019/utaipan/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/working_dir_1b06fe49-d1a0-432e-94c9-1285c68ec7f1/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 2f0c9e4422072780ec01f7265ef9ade742466ed9 ................................................................................................................................................................................................................................................................................................................................................................................................................... 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 16:29:12,226 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-12-09 16:29:12,227 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-12-09 16:29:12,233 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-12-09 16:29:12,234 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-12-09 16:29:12,234 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-12-09 16:29:12,235 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-12-09 16:29:12,235 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-12-09 16:29:12,236 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-12-09 16:29:12,237 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-12-09 16:29:12,237 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-12-09 16:29:12,237 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-12-09 16:29:12,238 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-12-09 16:29:12,238 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-12-09 16:29:12,239 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-12-09 16:29:12,239 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-12-09 16:29:12,240 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-12-09 16:29:12,240 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-12-09 16:29:12,241 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-12-09 16:29:12,242 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-12-09 16:29:12,243 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-12-09 16:29:12,243 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-12-09 16:29:12,245 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-12-09 16:29:12,245 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-12-09 16:29:12,245 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-12-09 16:29:12,245 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-12-09 16:29:12,246 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-12-09 16:29:12,246 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-12-09 16:29:12,247 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-12-09 16:29:12,247 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-12-09 16:29:12,247 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-12-09 16:29:12,248 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-12-09 16:29:12,248 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-12-09 16:29:12,248 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-12-09 16:29:12,249 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-12-09 16:29:12,249 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-12-09 16:29:12,249 INFO L98 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/working_dir_1b06fe49-d1a0-432e-94c9-1285c68ec7f1/bin-2019/utaipan/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Default.epf [2018-12-09 16:29:12,256 INFO L110 SettingsManager]: Loading preferences was successful [2018-12-09 16:29:12,256 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-12-09 16:29:12,257 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-12-09 16:29:12,257 INFO L133 SettingsManager]: * ... calls to implemented procedures=ONLY_FOR_CONCURRENT_PROGRAMS [2018-12-09 16:29:12,257 INFO L133 SettingsManager]: * User list type=DISABLED [2018-12-09 16:29:12,257 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-12-09 16:29:12,257 INFO L133 SettingsManager]: * Explicit value domain=true [2018-12-09 16:29:12,258 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-12-09 16:29:12,258 INFO L133 SettingsManager]: * Octagon Domain=false [2018-12-09 16:29:12,258 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-12-09 16:29:12,258 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-12-09 16:29:12,258 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-12-09 16:29:12,258 INFO L133 SettingsManager]: * Interval Domain=false [2018-12-09 16:29:12,259 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-12-09 16:29:12,259 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-12-09 16:29:12,259 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-12-09 16:29:12,259 INFO L133 SettingsManager]: * sizeof long=4 [2018-12-09 16:29:12,259 INFO L133 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2018-12-09 16:29:12,259 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-12-09 16:29:12,259 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-12-09 16:29:12,260 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-12-09 16:29:12,260 INFO L133 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2018-12-09 16:29:12,260 INFO L133 SettingsManager]: * Bitprecise bitfields=true [2018-12-09 16:29:12,260 INFO L133 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2018-12-09 16:29:12,260 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-12-09 16:29:12,260 INFO L133 SettingsManager]: * sizeof long double=12 [2018-12-09 16:29:12,260 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-12-09 16:29:12,260 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-12-09 16:29:12,261 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-12-09 16:29:12,261 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-12-09 16:29:12,261 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-12-09 16:29:12,261 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-12-09 16:29:12,261 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-12-09 16:29:12,261 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-12-09 16:29:12,261 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-12-09 16:29:12,261 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-12-09 16:29:12,261 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_1b06fe49-d1a0-432e-94c9-1285c68ec7f1/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 -> 2f0c9e4422072780ec01f7265ef9ade742466ed9 [2018-12-09 16:29:12,279 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-12-09 16:29:12,286 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-12-09 16:29:12,287 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-12-09 16:29:12,288 INFO L271 PluginConnector]: Initializing CDTParser... [2018-12-09 16:29:12,288 INFO L276 PluginConnector]: CDTParser initialized [2018-12-09 16:29:12,289 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/working_dir_1b06fe49-d1a0-432e-94c9-1285c68ec7f1/bin-2019/utaipan/../../sv-benchmarks/c/ldv-memsafety/memleaks_test16_1_false-valid-memtrack_true-termination.i [2018-12-09 16:29:12,322 INFO L221 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_1b06fe49-d1a0-432e-94c9-1285c68ec7f1/bin-2019/utaipan/data/358e0a5e2/a255903a810641ed9fc9e258dadc7ac7/FLAGb2c446474 [2018-12-09 16:29:12,807 INFO L307 CDTParser]: Found 1 translation units. [2018-12-09 16:29:12,807 INFO L161 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/working_dir_1b06fe49-d1a0-432e-94c9-1285c68ec7f1/sv-benchmarks/c/ldv-memsafety/memleaks_test16_1_false-valid-memtrack_true-termination.i [2018-12-09 16:29:12,815 INFO L355 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_1b06fe49-d1a0-432e-94c9-1285c68ec7f1/bin-2019/utaipan/data/358e0a5e2/a255903a810641ed9fc9e258dadc7ac7/FLAGb2c446474 [2018-12-09 16:29:12,824 INFO L363 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/working_dir_1b06fe49-d1a0-432e-94c9-1285c68ec7f1/bin-2019/utaipan/data/358e0a5e2/a255903a810641ed9fc9e258dadc7ac7 [2018-12-09 16:29:12,826 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-12-09 16:29:12,827 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2018-12-09 16:29:12,827 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-12-09 16:29:12,827 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-12-09 16:29:12,829 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-12-09 16:29:12,830 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.12 04:29:12" (1/1) ... [2018-12-09 16:29:12,831 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@33416e95 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 04:29:12, skipping insertion in model container [2018-12-09 16:29:12,832 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.12 04:29:12" (1/1) ... [2018-12-09 16:29:12,836 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-12-09 16:29:12,858 INFO L176 MainTranslator]: Built tables and reachable declarations [2018-12-09 16:29:13,075 INFO L203 PostProcessor]: Analyzing one entry point: main [2018-12-09 16:29:13,086 INFO L191 MainTranslator]: Completed pre-run [2018-12-09 16:29:13,127 INFO L203 PostProcessor]: Analyzing one entry point: main [2018-12-09 16:29:13,162 INFO L195 MainTranslator]: Completed translation [2018-12-09 16:29:13,162 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 04:29:13 WrapperNode [2018-12-09 16:29:13,163 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-12-09 16:29:13,163 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-12-09 16:29:13,163 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-12-09 16:29:13,163 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-12-09 16:29:13,169 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 04:29:13" (1/1) ... [2018-12-09 16:29:13,180 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 04:29:13" (1/1) ... [2018-12-09 16:29:13,185 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-12-09 16:29:13,185 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-12-09 16:29:13,185 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-12-09 16:29:13,185 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-12-09 16:29:13,191 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 04:29:13" (1/1) ... [2018-12-09 16:29:13,191 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 04:29:13" (1/1) ... [2018-12-09 16:29:13,193 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 04:29:13" (1/1) ... [2018-12-09 16:29:13,193 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 04:29:13" (1/1) ... [2018-12-09 16:29:13,198 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 04:29:13" (1/1) ... [2018-12-09 16:29:13,199 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 04:29:13" (1/1) ... [2018-12-09 16:29:13,199 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 04:29:13" (1/1) ... [2018-12-09 16:29:13,200 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-12-09 16:29:13,201 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-12-09 16:29:13,201 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-12-09 16:29:13,201 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-12-09 16:29:13,201 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 04:29:13" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_1b06fe49-d1a0-432e-94c9-1285c68ec7f1/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 16:29:13,235 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.alloc [2018-12-09 16:29:13,235 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2018-12-09 16:29:13,235 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2018-12-09 16:29:13,235 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-12-09 16:29:13,235 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-12-09 16:29:13,235 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-12-09 16:29:13,235 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-12-09 16:29:13,235 INFO L130 BoogieDeclarations]: Found specification of procedure alloc_unsafe_16 [2018-12-09 16:29:13,235 INFO L138 BoogieDeclarations]: Found implementation of procedure alloc_unsafe_16 [2018-12-09 16:29:13,236 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2018-12-09 16:29:13,236 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2018-12-09 16:29:13,236 INFO L130 BoogieDeclarations]: Found specification of procedure free_16 [2018-12-09 16:29:13,236 INFO L138 BoogieDeclarations]: Found implementation of procedure free_16 [2018-12-09 16:29:13,236 INFO L130 BoogieDeclarations]: Found specification of procedure entry_point [2018-12-09 16:29:13,236 INFO L138 BoogieDeclarations]: Found implementation of procedure entry_point [2018-12-09 16:29:13,236 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-12-09 16:29:13,236 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-12-09 16:29:13,362 INFO L275 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-12-09 16:29:13,362 INFO L280 CfgBuilder]: Removed 0 assue(true) statements. [2018-12-09 16:29:13,363 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.12 04:29:13 BoogieIcfgContainer [2018-12-09 16:29:13,363 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-12-09 16:29:13,363 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-12-09 16:29:13,363 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-12-09 16:29:13,365 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-12-09 16:29:13,365 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 09.12 04:29:12" (1/3) ... [2018-12-09 16:29:13,366 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3c23124 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.12 04:29:13, skipping insertion in model container [2018-12-09 16:29:13,366 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 04:29:13" (2/3) ... [2018-12-09 16:29:13,366 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3c23124 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.12 04:29:13, skipping insertion in model container [2018-12-09 16:29:13,366 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.12 04:29:13" (3/3) ... [2018-12-09 16:29:13,367 INFO L112 eAbstractionObserver]: Analyzing ICFG memleaks_test16_1_false-valid-memtrack_true-termination.i [2018-12-09 16:29:13,373 INFO L156 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-12-09 16:29:13,377 INFO L168 ceAbstractionStarter]: Appying trace abstraction to program that has 3 error locations. [2018-12-09 16:29:13,385 INFO L257 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2018-12-09 16:29:13,403 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-12-09 16:29:13,403 INFO L383 AbstractCegarLoop]: Hoare is false [2018-12-09 16:29:13,403 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-12-09 16:29:13,403 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-12-09 16:29:13,404 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-12-09 16:29:13,404 INFO L387 AbstractCegarLoop]: Difference is false [2018-12-09 16:29:13,404 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-12-09 16:29:13,404 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-12-09 16:29:13,412 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states. [2018-12-09 16:29:13,418 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2018-12-09 16:29:13,418 INFO L394 BasicCegarLoop]: Found error trace [2018-12-09 16:29:13,419 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-09 16:29:13,421 INFO L423 AbstractCegarLoop]: === Iteration 1 === [mainErr0ENSURES_VIOLATIONMEMORY_LEAK, free_16Err0ASSERT_VIOLATIONMEMORY_FREE, free_16Err1ASSERT_VIOLATIONMEMORY_FREE]=== [2018-12-09 16:29:13,425 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-09 16:29:13,425 INFO L82 PathProgramCache]: Analyzing trace with hash 1586420899, now seen corresponding path program 1 times [2018-12-09 16:29:13,427 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-12-09 16:29:13,460 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-09 16:29:13,460 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-09 16:29:13,461 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-09 16:29:13,461 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-12-09 16:29:13,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-09 16:29:13,605 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 16:29:13,607 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-12-09 16:29:13,607 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2018-12-09 16:29:13,607 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-12-09 16:29:13,611 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-12-09 16:29:13,623 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-12-09 16:29:13,624 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2018-12-09 16:29:13,625 INFO L87 Difference]: Start difference. First operand 34 states. Second operand 9 states. [2018-12-09 16:29:13,677 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-09 16:29:13,677 INFO L93 Difference]: Finished difference Result 33 states and 34 transitions. [2018-12-09 16:29:13,678 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2018-12-09 16:29:13,679 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 22 [2018-12-09 16:29:13,679 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-09 16:29:13,684 INFO L225 Difference]: With dead ends: 33 [2018-12-09 16:29:13,684 INFO L226 Difference]: Without dead ends: 30 [2018-12-09 16:29:13,686 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2018-12-09 16:29:13,700 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states. [2018-12-09 16:29:13,712 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 30. [2018-12-09 16:29:13,713 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2018-12-09 16:29:13,714 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 31 transitions. [2018-12-09 16:29:13,715 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 31 transitions. Word has length 22 [2018-12-09 16:29:13,716 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-09 16:29:13,716 INFO L480 AbstractCegarLoop]: Abstraction has 30 states and 31 transitions. [2018-12-09 16:29:13,716 INFO L481 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-12-09 16:29:13,716 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 31 transitions. [2018-12-09 16:29:13,716 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2018-12-09 16:29:13,717 INFO L394 BasicCegarLoop]: Found error trace [2018-12-09 16:29:13,717 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-09 16:29:13,717 INFO L423 AbstractCegarLoop]: === Iteration 2 === [mainErr0ENSURES_VIOLATIONMEMORY_LEAK, free_16Err0ASSERT_VIOLATIONMEMORY_FREE, free_16Err1ASSERT_VIOLATIONMEMORY_FREE]=== [2018-12-09 16:29:13,717 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-09 16:29:13,717 INFO L82 PathProgramCache]: Analyzing trace with hash 1934407664, now seen corresponding path program 1 times [2018-12-09 16:29:13,717 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-12-09 16:29:13,718 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-09 16:29:13,718 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-09 16:29:13,719 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-09 16:29:13,719 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-12-09 16:29:13,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-09 16:29:13,781 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 16:29:13,782 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-12-09 16:29:13,782 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2018-12-09 16:29:13,782 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-12-09 16:29:13,783 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-12-09 16:29:13,783 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-12-09 16:29:13,783 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2018-12-09 16:29:13,784 INFO L87 Difference]: Start difference. First operand 30 states and 31 transitions. Second operand 9 states. [2018-12-09 16:29:13,842 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-09 16:29:13,842 INFO L93 Difference]: Finished difference Result 45 states and 48 transitions. [2018-12-09 16:29:13,842 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2018-12-09 16:29:13,842 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 23 [2018-12-09 16:29:13,843 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-09 16:29:13,844 INFO L225 Difference]: With dead ends: 45 [2018-12-09 16:29:13,845 INFO L226 Difference]: Without dead ends: 45 [2018-12-09 16:29:13,845 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2018-12-09 16:29:13,845 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45 states. [2018-12-09 16:29:13,851 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45 to 43. [2018-12-09 16:29:13,851 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 43 states. [2018-12-09 16:29:13,852 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 46 transitions. [2018-12-09 16:29:13,852 INFO L78 Accepts]: Start accepts. Automaton has 43 states and 46 transitions. Word has length 23 [2018-12-09 16:29:13,852 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-09 16:29:13,852 INFO L480 AbstractCegarLoop]: Abstraction has 43 states and 46 transitions. [2018-12-09 16:29:13,852 INFO L481 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-12-09 16:29:13,852 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 46 transitions. [2018-12-09 16:29:13,853 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2018-12-09 16:29:13,853 INFO L394 BasicCegarLoop]: Found error trace [2018-12-09 16:29:13,853 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-09 16:29:13,853 INFO L423 AbstractCegarLoop]: === Iteration 3 === [mainErr0ENSURES_VIOLATIONMEMORY_LEAK, free_16Err0ASSERT_VIOLATIONMEMORY_FREE, free_16Err1ASSERT_VIOLATIONMEMORY_FREE]=== [2018-12-09 16:29:13,853 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-09 16:29:13,854 INFO L82 PathProgramCache]: Analyzing trace with hash 2063490383, now seen corresponding path program 1 times [2018-12-09 16:29:13,854 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-12-09 16:29:13,855 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-09 16:29:13,855 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-09 16:29:13,855 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-09 16:29:13,855 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-12-09 16:29:13,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-09 16:29:13,922 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 16:29:13,922 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-12-09 16:29:13,922 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2018-12-09 16:29:13,923 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-12-09 16:29:13,923 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-12-09 16:29:13,923 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-12-09 16:29:13,923 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2018-12-09 16:29:13,923 INFO L87 Difference]: Start difference. First operand 43 states and 46 transitions. Second operand 9 states. [2018-12-09 16:29:13,952 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-09 16:29:13,952 INFO L93 Difference]: Finished difference Result 46 states and 48 transitions. [2018-12-09 16:29:13,953 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2018-12-09 16:29:13,953 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 23 [2018-12-09 16:29:13,953 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-09 16:29:13,953 INFO L225 Difference]: With dead ends: 46 [2018-12-09 16:29:13,954 INFO L226 Difference]: Without dead ends: 46 [2018-12-09 16:29:13,954 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2018-12-09 16:29:13,954 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46 states. [2018-12-09 16:29:13,957 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46 to 29. [2018-12-09 16:29:13,957 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2018-12-09 16:29:13,958 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 30 transitions. [2018-12-09 16:29:13,958 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 30 transitions. Word has length 23 [2018-12-09 16:29:13,958 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-09 16:29:13,958 INFO L480 AbstractCegarLoop]: Abstraction has 29 states and 30 transitions. [2018-12-09 16:29:13,958 INFO L481 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-12-09 16:29:13,958 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 30 transitions. [2018-12-09 16:29:13,959 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2018-12-09 16:29:13,959 INFO L394 BasicCegarLoop]: Found error trace [2018-12-09 16:29:13,959 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-09 16:29:13,959 INFO L423 AbstractCegarLoop]: === Iteration 4 === [mainErr0ENSURES_VIOLATIONMEMORY_LEAK, free_16Err0ASSERT_VIOLATIONMEMORY_FREE, free_16Err1ASSERT_VIOLATIONMEMORY_FREE]=== [2018-12-09 16:29:13,959 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-09 16:29:13,960 INFO L82 PathProgramCache]: Analyzing trace with hash -1754398405, now seen corresponding path program 1 times [2018-12-09 16:29:13,960 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-12-09 16:29:13,961 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-09 16:29:13,961 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-09 16:29:13,961 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-09 16:29:13,961 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-12-09 16:29:13,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-12-09 16:29:13,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-12-09 16:29:13,999 INFO L469 BasicCegarLoop]: Counterexample might be feasible [2018-12-09 16:29:14,006 WARN L416 cessorBacktranslator]: Generated EnsuresSpecification ensures #valid == old(#valid); is not ensure(true) [2018-12-09 16:29:14,011 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 16:29:14,012 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 16:29:14,016 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 09.12 04:29:14 BoogieIcfgContainer [2018-12-09 16:29:14,016 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-12-09 16:29:14,017 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2018-12-09 16:29:14,017 INFO L271 PluginConnector]: Initializing Witness Printer... [2018-12-09 16:29:14,017 INFO L276 PluginConnector]: Witness Printer initialized [2018-12-09 16:29:14,017 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.12 04:29:13" (3/4) ... [2018-12-09 16:29:14,019 INFO L147 WitnessPrinter]: No result that supports witness generation found [2018-12-09 16:29:14,019 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2018-12-09 16:29:14,020 INFO L168 Benchmark]: Toolchain (without parser) took 1193.68 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 104.3 MB). Free memory was 941.6 MB in the beginning and 971.0 MB in the end (delta: -29.3 MB). Peak memory consumption was 75.0 MB. Max. memory is 11.5 GB. [2018-12-09 16:29:14,021 INFO L168 Benchmark]: CDTParser took 0.12 ms. Allocated memory is still 1.0 GB. Free memory is still 970.6 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-12-09 16:29:14,021 INFO L168 Benchmark]: CACSL2BoogieTranslator took 335.62 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 104.3 MB). Free memory was 941.6 MB in the beginning and 1.1 GB in the end (delta: -141.0 MB). Peak memory consumption was 33.6 MB. Max. memory is 11.5 GB. [2018-12-09 16:29:14,021 INFO L168 Benchmark]: Boogie Procedure Inliner took 21.82 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: 2.7 MB). Peak memory consumption was 2.7 MB. Max. memory is 11.5 GB. [2018-12-09 16:29:14,022 INFO L168 Benchmark]: Boogie Preprocessor took 15.52 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: 2.7 MB). Peak memory consumption was 2.7 MB. Max. memory is 11.5 GB. [2018-12-09 16:29:14,022 INFO L168 Benchmark]: RCFGBuilder took 162.02 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: 17.6 MB). Peak memory consumption was 17.6 MB. Max. memory is 11.5 GB. [2018-12-09 16:29:14,022 INFO L168 Benchmark]: TraceAbstraction took 653.30 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 971.0 MB in the end (delta: 88.7 MB). Peak memory consumption was 88.7 MB. Max. memory is 11.5 GB. [2018-12-09 16:29:14,023 INFO L168 Benchmark]: Witness Printer took 2.75 ms. Allocated memory is still 1.1 GB. Free memory is still 971.0 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-12-09 16:29:14,024 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.12 ms. Allocated memory is still 1.0 GB. Free memory is still 970.6 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 335.62 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 104.3 MB). Free memory was 941.6 MB in the beginning and 1.1 GB in the end (delta: -141.0 MB). Peak memory consumption was 33.6 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 21.82 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: 2.7 MB). Peak memory consumption was 2.7 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 15.52 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: 2.7 MB). Peak memory consumption was 2.7 MB. Max. memory is 11.5 GB. * RCFGBuilder took 162.02 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: 17.6 MB). Peak memory consumption was 17.6 MB. Max. memory is 11.5 GB. * TraceAbstraction took 653.30 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 971.0 MB in the end (delta: 88.7 MB). Peak memory consumption was 88.7 MB. Max. memory is 11.5 GB. * Witness Printer took 2.75 ms. Allocated memory is still 1.1 GB. Free memory is still 971.0 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 9 could not be translated for associated CType STRUCT~~ldv_list_head?next~*ldv_list_head?prev~*ldv_list_head# - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IntegerLiteral 10 could not be translated for associated CType STRUCT~~ldv_list_head?next~*ldv_list_head?prev~*ldv_list_head# * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 1458]: Unable to prove that all allocated memory was freed Unable to prove that all allocated memory was freed Reason: overapproximation of memtrack at line 1458. 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}] [L1459] CALL entry_point() VAL [ldv_global_msg_list={13:0}] [L1453] int condition = __VERIFIER_nondet_int(); [L1454] CALL, EXPR alloc_unsafe_16(condition) VAL [\old(condition)=0, ldv_global_msg_list={13:0}] [L1440] CALL, EXPR ldv_malloc(sizeof(struct A16)) 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] [L1440] RET, EXPR ldv_malloc(sizeof(struct A16)) VAL [\old(condition)=0, condition=0, ldv_global_msg_list={13:0}, ldv_malloc(sizeof(struct A16))={12:0}] [L1440] struct A16 *p = (struct A16 *)ldv_malloc(sizeof(struct A16)); [L1443] return p; VAL [\old(condition)=0, \result={12:0}, condition=0, ldv_global_msg_list={13:0}, p={12:0}] [L1454] RET, EXPR alloc_unsafe_16(condition) VAL [alloc_unsafe_16(condition)={12:0}, condition=0, ldv_global_msg_list={13:0}] [L1454] struct A16 *p = alloc_unsafe_16(condition); [L1455] CALL free_16(p, condition) VAL [\old(condition)=0, ldv_global_msg_list={13:0}, p={12:0}] [L1447] COND FALSE !(\read(condition)) VAL [\old(condition)=0, condition=0, ldv_global_msg_list={13:0}, p={12:0}, p={12:0}] [L1455] RET free_16(p, condition) VAL [condition=0, ldv_global_msg_list={13:0}, p={12:0}] [L1459] RET entry_point() VAL [ldv_global_msg_list={13:0}] - StatisticsResult: Ultimate Automizer benchmark data CFG has 7 procedures, 34 locations, 3 error locations. UNSAFE Result, 0.6s OverallTime, 4 OverallIterations, 1 TraceHistogramMax, 0.1s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 97 SDtfs, 31 SDslu, 582 SDs, 0 SdLazy, 169 SolverSat, 2 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 27 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=43occurred in iteration=2, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s AbstIntTime, 0 AbstIntIterations, 0 AbstIntStrong, NaN AbsIntWeakeningRatio, NaN AbsIntAvgWeakeningVarsNumRemoved, NaN AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 3 MinimizatonAttempts, 19 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.2s InterpolantComputationTime, 94 NumberOfCodeBlocks, 94 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 65 ConstructedInterpolants, 0 QuantifiedInterpolants, 3281 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 3 InterpolantComputations, 3 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate 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 16:29:15,310 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-12-09 16:29:15,311 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-12-09 16:29:15,318 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-12-09 16:29:15,319 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-12-09 16:29:15,319 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-12-09 16:29:15,320 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-12-09 16:29:15,321 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-12-09 16:29:15,322 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-12-09 16:29:15,323 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-12-09 16:29:15,323 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-12-09 16:29:15,323 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-12-09 16:29:15,324 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-12-09 16:29:15,325 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-12-09 16:29:15,325 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-12-09 16:29:15,326 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-12-09 16:29:15,327 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-12-09 16:29:15,328 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-12-09 16:29:15,329 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-12-09 16:29:15,330 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-12-09 16:29:15,331 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-12-09 16:29:15,332 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-12-09 16:29:15,333 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-12-09 16:29:15,334 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-12-09 16:29:15,334 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-12-09 16:29:15,334 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-12-09 16:29:15,335 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-12-09 16:29:15,336 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-12-09 16:29:15,336 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-12-09 16:29:15,337 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-12-09 16:29:15,337 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-12-09 16:29:15,338 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-12-09 16:29:15,338 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-12-09 16:29:15,338 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-12-09 16:29:15,339 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-12-09 16:29:15,339 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-12-09 16:29:15,339 INFO L98 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/working_dir_1b06fe49-d1a0-432e-94c9-1285c68ec7f1/bin-2019/utaipan/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Bitvector.epf [2018-12-09 16:29:15,350 INFO L110 SettingsManager]: Loading preferences was successful [2018-12-09 16:29:15,350 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-12-09 16:29:15,350 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-12-09 16:29:15,350 INFO L133 SettingsManager]: * ... calls to implemented procedures=ONLY_FOR_CONCURRENT_PROGRAMS [2018-12-09 16:29:15,351 INFO L133 SettingsManager]: * User list type=DISABLED [2018-12-09 16:29:15,351 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-12-09 16:29:15,351 INFO L133 SettingsManager]: * Explicit value domain=true [2018-12-09 16:29:15,351 INFO L133 SettingsManager]: * Octagon Domain=false [2018-12-09 16:29:15,351 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-12-09 16:29:15,351 INFO L133 SettingsManager]: * Interval Domain=false [2018-12-09 16:29:15,351 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-12-09 16:29:15,352 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-12-09 16:29:15,352 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-12-09 16:29:15,352 INFO L133 SettingsManager]: * sizeof long=4 [2018-12-09 16:29:15,352 INFO L133 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2018-12-09 16:29:15,352 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-12-09 16:29:15,352 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-12-09 16:29:15,352 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-12-09 16:29:15,352 INFO L133 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2018-12-09 16:29:15,353 INFO L133 SettingsManager]: * Bitprecise bitfields=true [2018-12-09 16:29:15,353 INFO L133 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2018-12-09 16:29:15,353 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-12-09 16:29:15,353 INFO L133 SettingsManager]: * Use bitvectors instead of ints=true [2018-12-09 16:29:15,353 INFO L133 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2018-12-09 16:29:15,353 INFO L133 SettingsManager]: * sizeof long double=12 [2018-12-09 16:29:15,353 INFO L133 SettingsManager]: * Use constant arrays=true [2018-12-09 16:29:15,353 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-12-09 16:29:15,353 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-12-09 16:29:15,353 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-12-09 16:29:15,354 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-12-09 16:29:15,354 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-12-09 16:29:15,354 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-12-09 16:29:15,354 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-12-09 16:29:15,354 INFO L133 SettingsManager]: * Trace refinement strategy=WALRUS [2018-12-09 16:29:15,354 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-12-09 16:29:15,354 INFO L133 SettingsManager]: * Command for external solver=cvc4 --incremental --rewrite-divk --print-success --lang smt [2018-12-09 16:29:15,354 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_1b06fe49-d1a0-432e-94c9-1285c68ec7f1/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 -> 2f0c9e4422072780ec01f7265ef9ade742466ed9 [2018-12-09 16:29:15,376 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-12-09 16:29:15,383 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-12-09 16:29:15,385 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-12-09 16:29:15,386 INFO L271 PluginConnector]: Initializing CDTParser... [2018-12-09 16:29:15,386 INFO L276 PluginConnector]: CDTParser initialized [2018-12-09 16:29:15,387 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/working_dir_1b06fe49-d1a0-432e-94c9-1285c68ec7f1/bin-2019/utaipan/../../sv-benchmarks/c/ldv-memsafety/memleaks_test16_1_false-valid-memtrack_true-termination.i [2018-12-09 16:29:15,422 INFO L221 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_1b06fe49-d1a0-432e-94c9-1285c68ec7f1/bin-2019/utaipan/data/67aa14f24/fbbbc3ee1691411ca9e625a7f66b7bfb/FLAGd2bcca78a [2018-12-09 16:29:15,856 INFO L307 CDTParser]: Found 1 translation units. [2018-12-09 16:29:15,856 INFO L161 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/working_dir_1b06fe49-d1a0-432e-94c9-1285c68ec7f1/sv-benchmarks/c/ldv-memsafety/memleaks_test16_1_false-valid-memtrack_true-termination.i [2018-12-09 16:29:15,864 INFO L355 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_1b06fe49-d1a0-432e-94c9-1285c68ec7f1/bin-2019/utaipan/data/67aa14f24/fbbbc3ee1691411ca9e625a7f66b7bfb/FLAGd2bcca78a [2018-12-09 16:29:15,871 INFO L363 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/working_dir_1b06fe49-d1a0-432e-94c9-1285c68ec7f1/bin-2019/utaipan/data/67aa14f24/fbbbc3ee1691411ca9e625a7f66b7bfb [2018-12-09 16:29:15,874 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-12-09 16:29:15,874 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2018-12-09 16:29:15,875 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-12-09 16:29:15,875 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-12-09 16:29:15,877 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-12-09 16:29:15,877 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.12 04:29:15" (1/1) ... [2018-12-09 16:29:15,879 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7d255691 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 04:29:15, skipping insertion in model container [2018-12-09 16:29:15,879 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.12 04:29:15" (1/1) ... [2018-12-09 16:29:15,883 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-12-09 16:29:15,912 INFO L176 MainTranslator]: Built tables and reachable declarations [2018-12-09 16:29:16,147 INFO L203 PostProcessor]: Analyzing one entry point: main [2018-12-09 16:29:16,159 INFO L191 MainTranslator]: Completed pre-run [2018-12-09 16:29:16,236 INFO L203 PostProcessor]: Analyzing one entry point: main [2018-12-09 16:29:16,278 INFO L195 MainTranslator]: Completed translation [2018-12-09 16:29:16,279 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 04:29:16 WrapperNode [2018-12-09 16:29:16,279 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-12-09 16:29:16,279 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-12-09 16:29:16,279 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-12-09 16:29:16,279 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-12-09 16:29:16,284 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 04:29:16" (1/1) ... [2018-12-09 16:29:16,296 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 04:29:16" (1/1) ... [2018-12-09 16:29:16,301 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-12-09 16:29:16,301 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-12-09 16:29:16,301 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-12-09 16:29:16,301 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-12-09 16:29:16,307 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 04:29:16" (1/1) ... [2018-12-09 16:29:16,307 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 04:29:16" (1/1) ... [2018-12-09 16:29:16,308 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 04:29:16" (1/1) ... [2018-12-09 16:29:16,308 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 04:29:16" (1/1) ... [2018-12-09 16:29:16,313 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 04:29:16" (1/1) ... [2018-12-09 16:29:16,314 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 04:29:16" (1/1) ... [2018-12-09 16:29:16,315 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 04:29:16" (1/1) ... [2018-12-09 16:29:16,317 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-12-09 16:29:16,317 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-12-09 16:29:16,317 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-12-09 16:29:16,317 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-12-09 16:29:16,318 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 04:29:16" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_1b06fe49-d1a0-432e-94c9-1285c68ec7f1/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 16:29:16,353 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.alloc [2018-12-09 16:29:16,354 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2018-12-09 16:29:16,354 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2018-12-09 16:29:16,354 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-12-09 16:29:16,354 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-12-09 16:29:16,354 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-12-09 16:29:16,354 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-12-09 16:29:16,354 INFO L130 BoogieDeclarations]: Found specification of procedure alloc_unsafe_16 [2018-12-09 16:29:16,354 INFO L138 BoogieDeclarations]: Found implementation of procedure alloc_unsafe_16 [2018-12-09 16:29:16,355 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2018-12-09 16:29:16,355 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2018-12-09 16:29:16,355 INFO L130 BoogieDeclarations]: Found specification of procedure free_16 [2018-12-09 16:29:16,355 INFO L138 BoogieDeclarations]: Found implementation of procedure free_16 [2018-12-09 16:29:16,355 INFO L130 BoogieDeclarations]: Found specification of procedure entry_point [2018-12-09 16:29:16,355 INFO L138 BoogieDeclarations]: Found implementation of procedure entry_point [2018-12-09 16:29:16,355 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-12-09 16:29:16,355 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-12-09 16:29:16,478 INFO L275 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-12-09 16:29:16,479 INFO L280 CfgBuilder]: Removed 0 assue(true) statements. [2018-12-09 16:29:16,479 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.12 04:29:16 BoogieIcfgContainer [2018-12-09 16:29:16,479 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-12-09 16:29:16,480 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-12-09 16:29:16,480 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-12-09 16:29:16,481 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-12-09 16:29:16,481 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 09.12 04:29:15" (1/3) ... [2018-12-09 16:29:16,482 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3fa9e89d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.12 04:29:16, skipping insertion in model container [2018-12-09 16:29:16,482 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 04:29:16" (2/3) ... [2018-12-09 16:29:16,482 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3fa9e89d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.12 04:29:16, skipping insertion in model container [2018-12-09 16:29:16,482 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.12 04:29:16" (3/3) ... [2018-12-09 16:29:16,483 INFO L112 eAbstractionObserver]: Analyzing ICFG memleaks_test16_1_false-valid-memtrack_true-termination.i [2018-12-09 16:29:16,489 INFO L156 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-12-09 16:29:16,493 INFO L168 ceAbstractionStarter]: Appying trace abstraction to program that has 3 error locations. [2018-12-09 16:29:16,501 INFO L257 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2018-12-09 16:29:16,515 INFO L133 ementStrategyFactory]: Using default assertion order modulation [2018-12-09 16:29:16,515 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-12-09 16:29:16,515 INFO L383 AbstractCegarLoop]: Hoare is false [2018-12-09 16:29:16,516 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-12-09 16:29:16,516 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-12-09 16:29:16,516 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-12-09 16:29:16,516 INFO L387 AbstractCegarLoop]: Difference is false [2018-12-09 16:29:16,516 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-12-09 16:29:16,516 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-12-09 16:29:16,525 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states. [2018-12-09 16:29:16,530 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2018-12-09 16:29:16,531 INFO L394 BasicCegarLoop]: Found error trace [2018-12-09 16:29:16,531 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-09 16:29:16,533 INFO L423 AbstractCegarLoop]: === Iteration 1 === [mainErr0ENSURES_VIOLATIONMEMORY_LEAK, free_16Err1ASSERT_VIOLATIONMEMORY_FREE, free_16Err0ASSERT_VIOLATIONMEMORY_FREE]=== [2018-12-09 16:29:16,536 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-09 16:29:16,536 INFO L82 PathProgramCache]: Analyzing trace with hash 1586420899, now seen corresponding path program 1 times [2018-12-09 16:29:16,539 INFO L223 ckRefinementStrategy]: Switched to mode CVC4_FPBP [2018-12-09 16:29:16,539 INFO L69 tionRefinementEngine]: Using refinement strategy WalrusRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_1b06fe49-d1a0-432e-94c9-1285c68ec7f1/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 16:29:16,556 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-09 16:29:16,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-09 16:29:16,599 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-09 16:29:16,676 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 16:29:16,677 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-12-09 16:29:16,679 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-12-09 16:29:16,680 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2018-12-09 16:29:16,683 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-12-09 16:29:16,694 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-12-09 16:29:16,694 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2018-12-09 16:29:16,696 INFO L87 Difference]: Start difference. First operand 34 states. Second operand 9 states. [2018-12-09 16:29:16,755 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-09 16:29:16,755 INFO L93 Difference]: Finished difference Result 33 states and 34 transitions. [2018-12-09 16:29:16,756 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2018-12-09 16:29:16,757 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 22 [2018-12-09 16:29:16,757 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-09 16:29:16,763 INFO L225 Difference]: With dead ends: 33 [2018-12-09 16:29:16,763 INFO L226 Difference]: Without dead ends: 30 [2018-12-09 16:29:16,764 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2018-12-09 16:29:16,775 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states. [2018-12-09 16:29:16,784 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 30. [2018-12-09 16:29:16,784 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2018-12-09 16:29:16,785 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 31 transitions. [2018-12-09 16:29:16,786 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 31 transitions. Word has length 22 [2018-12-09 16:29:16,786 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-09 16:29:16,786 INFO L480 AbstractCegarLoop]: Abstraction has 30 states and 31 transitions. [2018-12-09 16:29:16,786 INFO L481 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-12-09 16:29:16,786 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 31 transitions. [2018-12-09 16:29:16,787 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2018-12-09 16:29:16,787 INFO L394 BasicCegarLoop]: Found error trace [2018-12-09 16:29:16,787 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-09 16:29:16,787 INFO L423 AbstractCegarLoop]: === Iteration 2 === [mainErr0ENSURES_VIOLATIONMEMORY_LEAK, free_16Err1ASSERT_VIOLATIONMEMORY_FREE, free_16Err0ASSERT_VIOLATIONMEMORY_FREE]=== [2018-12-09 16:29:16,787 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-09 16:29:16,787 INFO L82 PathProgramCache]: Analyzing trace with hash 1934407664, now seen corresponding path program 1 times [2018-12-09 16:29:16,788 INFO L223 ckRefinementStrategy]: Switched to mode CVC4_FPBP [2018-12-09 16:29:16,788 INFO L69 tionRefinementEngine]: Using refinement strategy WalrusRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_1b06fe49-d1a0-432e-94c9-1285c68ec7f1/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 16:29:16,804 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-09 16:29:16,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-09 16:29:16,841 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-09 16:29:16,858 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 16:29:16,859 INFO L267 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2018-12-09 16:29:16,861 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-12-09 16:29:16,861 INFO L202 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:6, output treesize:5 [2018-12-09 16:29:16,920 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 16:29:16,920 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-12-09 16:29:16,921 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-12-09 16:29:16,921 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2018-12-09 16:29:16,923 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-12-09 16:29:16,923 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-12-09 16:29:16,923 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2018-12-09 16:29:16,923 INFO L87 Difference]: Start difference. First operand 30 states and 31 transitions. Second operand 9 states. [2018-12-09 16:29:17,039 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-09 16:29:17,039 INFO L93 Difference]: Finished difference Result 45 states and 48 transitions. [2018-12-09 16:29:17,039 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2018-12-09 16:29:17,040 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 23 [2018-12-09 16:29:17,040 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-09 16:29:17,042 INFO L225 Difference]: With dead ends: 45 [2018-12-09 16:29:17,042 INFO L226 Difference]: Without dead ends: 45 [2018-12-09 16:29:17,042 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2018-12-09 16:29:17,043 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45 states. [2018-12-09 16:29:17,049 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45 to 43. [2018-12-09 16:29:17,049 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 43 states. [2018-12-09 16:29:17,049 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 46 transitions. [2018-12-09 16:29:17,050 INFO L78 Accepts]: Start accepts. Automaton has 43 states and 46 transitions. Word has length 23 [2018-12-09 16:29:17,050 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-09 16:29:17,050 INFO L480 AbstractCegarLoop]: Abstraction has 43 states and 46 transitions. [2018-12-09 16:29:17,050 INFO L481 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-12-09 16:29:17,050 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 46 transitions. [2018-12-09 16:29:17,051 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2018-12-09 16:29:17,051 INFO L394 BasicCegarLoop]: Found error trace [2018-12-09 16:29:17,051 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-09 16:29:17,051 INFO L423 AbstractCegarLoop]: === Iteration 3 === [mainErr0ENSURES_VIOLATIONMEMORY_LEAK, free_16Err1ASSERT_VIOLATIONMEMORY_FREE, free_16Err0ASSERT_VIOLATIONMEMORY_FREE]=== [2018-12-09 16:29:17,052 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-09 16:29:17,052 INFO L82 PathProgramCache]: Analyzing trace with hash 2063490383, now seen corresponding path program 1 times [2018-12-09 16:29:17,052 INFO L223 ckRefinementStrategy]: Switched to mode CVC4_FPBP [2018-12-09 16:29:17,052 INFO L69 tionRefinementEngine]: Using refinement strategy WalrusRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_1b06fe49-d1a0-432e-94c9-1285c68ec7f1/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 16:29:17,066 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-09 16:29:17,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-09 16:29:17,087 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-09 16:29:17,139 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 16:29:17,139 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-12-09 16:29:17,140 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-12-09 16:29:17,140 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2018-12-09 16:29:17,140 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-12-09 16:29:17,140 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-12-09 16:29:17,140 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2018-12-09 16:29:17,141 INFO L87 Difference]: Start difference. First operand 43 states and 46 transitions. Second operand 9 states. [2018-12-09 16:29:17,200 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-09 16:29:17,200 INFO L93 Difference]: Finished difference Result 46 states and 48 transitions. [2018-12-09 16:29:17,200 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2018-12-09 16:29:17,201 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 23 [2018-12-09 16:29:17,201 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-09 16:29:17,201 INFO L225 Difference]: With dead ends: 46 [2018-12-09 16:29:17,202 INFO L226 Difference]: Without dead ends: 46 [2018-12-09 16:29:17,202 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2018-12-09 16:29:17,202 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46 states. [2018-12-09 16:29:17,205 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46 to 29. [2018-12-09 16:29:17,205 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2018-12-09 16:29:17,206 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 30 transitions. [2018-12-09 16:29:17,206 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 30 transitions. Word has length 23 [2018-12-09 16:29:17,206 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-09 16:29:17,206 INFO L480 AbstractCegarLoop]: Abstraction has 29 states and 30 transitions. [2018-12-09 16:29:17,206 INFO L481 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-12-09 16:29:17,207 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 30 transitions. [2018-12-09 16:29:17,207 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2018-12-09 16:29:17,207 INFO L394 BasicCegarLoop]: Found error trace [2018-12-09 16:29:17,207 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-09 16:29:17,208 INFO L423 AbstractCegarLoop]: === Iteration 4 === [mainErr0ENSURES_VIOLATIONMEMORY_LEAK, free_16Err1ASSERT_VIOLATIONMEMORY_FREE, free_16Err0ASSERT_VIOLATIONMEMORY_FREE]=== [2018-12-09 16:29:17,208 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-09 16:29:17,208 INFO L82 PathProgramCache]: Analyzing trace with hash -1754398405, now seen corresponding path program 1 times [2018-12-09 16:29:17,208 INFO L223 ckRefinementStrategy]: Switched to mode CVC4_FPBP [2018-12-09 16:29:17,208 INFO L69 tionRefinementEngine]: Using refinement strategy WalrusRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_1b06fe49-d1a0-432e-94c9-1285c68ec7f1/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 16:29:17,231 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-09 16:29:17,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-12-09 16:29:17,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-12-09 16:29:17,336 INFO L469 BasicCegarLoop]: Counterexample might be feasible [2018-12-09 16:29:17,347 WARN L416 cessorBacktranslator]: Generated EnsuresSpecification ensures #valid == old(#valid); is not ensure(true) [2018-12-09 16:29:17,353 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 16:29:17,354 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 16:29:17,361 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 09.12 04:29:17 BoogieIcfgContainer [2018-12-09 16:29:17,361 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-12-09 16:29:17,361 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2018-12-09 16:29:17,361 INFO L271 PluginConnector]: Initializing Witness Printer... [2018-12-09 16:29:17,362 INFO L276 PluginConnector]: Witness Printer initialized [2018-12-09 16:29:17,362 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.12 04:29:16" (3/4) ... [2018-12-09 16:29:17,365 INFO L147 WitnessPrinter]: No result that supports witness generation found [2018-12-09 16:29:17,365 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2018-12-09 16:29:17,366 INFO L168 Benchmark]: Toolchain (without parser) took 1491.67 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 134.2 MB). Free memory was 939.3 MB in the beginning and 951.1 MB in the end (delta: -11.7 MB). Peak memory consumption was 122.5 MB. Max. memory is 11.5 GB. [2018-12-09 16:29:17,367 INFO L168 Benchmark]: CDTParser took 0.13 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 16:29:17,367 INFO L168 Benchmark]: CACSL2BoogieTranslator took 403.92 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 134.2 MB). Free memory was 939.3 MB in the beginning and 1.1 GB in the end (delta: -162.1 MB). Peak memory consumption was 37.6 MB. Max. memory is 11.5 GB. [2018-12-09 16:29:17,368 INFO L168 Benchmark]: Boogie Procedure Inliner took 21.63 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 16:29:17,368 INFO L168 Benchmark]: Boogie Preprocessor took 15.96 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 16:29:17,368 INFO L168 Benchmark]: RCFGBuilder took 162.06 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 24.5 MB). Peak memory consumption was 24.5 MB. Max. memory is 11.5 GB. [2018-12-09 16:29:17,369 INFO L168 Benchmark]: TraceAbstraction took 881.56 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 951.1 MB in the end (delta: 125.9 MB). Peak memory consumption was 125.9 MB. Max. memory is 11.5 GB. [2018-12-09 16:29:17,369 INFO L168 Benchmark]: Witness Printer took 3.70 ms. Allocated memory is still 1.2 GB. Free memory is still 951.1 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-12-09 16:29:17,371 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 972.9 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 403.92 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 134.2 MB). Free memory was 939.3 MB in the beginning and 1.1 GB in the end (delta: -162.1 MB). Peak memory consumption was 37.6 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 21.63 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 15.96 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 162.06 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 24.5 MB). Peak memory consumption was 24.5 MB. Max. memory is 11.5 GB. * TraceAbstraction took 881.56 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 951.1 MB in the end (delta: 125.9 MB). Peak memory consumption was 125.9 MB. Max. memory is 11.5 GB. * Witness Printer took 3.70 ms. Allocated memory is still 1.2 GB. Free memory is still 951.1 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: 1458]: Unable to prove that all allocated memory was freed Unable to prove that all allocated memory was freed Reason: overapproximation of memtrack at line 1458. 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={-2146401247:0}] [L1459] CALL entry_point() VAL [ldv_global_msg_list={-2146401247:0}] [L1453] int condition = __VERIFIER_nondet_int(); [L1454] CALL, EXPR alloc_unsafe_16(condition) VAL [\old(condition)=0, ldv_global_msg_list={-2146401247:0}] [L1440] CALL, EXPR ldv_malloc(sizeof(struct A16)) VAL [\old(size)=4, ldv_global_msg_list={-2146401247:0}] [L1073] COND TRUE __VERIFIER_nondet_int() [L1074] return malloc(size); VAL [\old(size)=4, \result={1082401:0}, ldv_global_msg_list={-2146401247:0}, malloc(size)={1082401:0}, size=4] [L1440] RET, EXPR ldv_malloc(sizeof(struct A16)) VAL [\old(condition)=0, condition=0, ldv_global_msg_list={-2146401247:0}, ldv_malloc(sizeof(struct A16))={1082401:0}] [L1440] struct A16 *p = (struct A16 *)ldv_malloc(sizeof(struct A16)); [L1443] return p; VAL [\old(condition)=0, \result={1082401:0}, condition=0, ldv_global_msg_list={-2146401247:0}, p={1082401:0}] [L1454] RET, EXPR alloc_unsafe_16(condition) VAL [alloc_unsafe_16(condition)={1082401:0}, condition=0, ldv_global_msg_list={-2146401247:0}] [L1454] struct A16 *p = alloc_unsafe_16(condition); [L1455] CALL free_16(p, condition) VAL [\old(condition)=0, ldv_global_msg_list={-2146401247:0}, p={1082401:0}] [L1447] COND FALSE !(\read(condition)) VAL [\old(condition)=0, condition=0, ldv_global_msg_list={-2146401247:0}, p={1082401:0}, p={1082401:0}] [L1455] RET free_16(p, condition) VAL [condition=0, ldv_global_msg_list={-2146401247:0}, p={1082401:0}] [L1459] RET entry_point() VAL [ldv_global_msg_list={-2146401247:0}] - StatisticsResult: Ultimate Automizer benchmark data CFG has 7 procedures, 34 locations, 3 error locations. UNSAFE Result, 0.8s OverallTime, 4 OverallIterations, 1 TraceHistogramMax, 0.2s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 97 SDtfs, 31 SDslu, 582 SDs, 0 SdLazy, 169 SolverSat, 2 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 68 GetRequests, 44 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=43occurred in iteration=2, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s AbstIntTime, 0 AbstIntIterations, 0 AbstIntStrong, NaN AbsIntWeakeningRatio, NaN AbsIntAvgWeakeningVarsNumRemoved, NaN AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 3 MinimizatonAttempts, 19 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.2s InterpolantComputationTime, 94 NumberOfCodeBlocks, 94 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 65 ConstructedInterpolants, 0 QuantifiedInterpolants, 3633 SizeOfPredicates, 9 NumberOfNonLiveVariables, 242 ConjunctsInSsa, 31 ConjunctsInUnsatCore, 3 InterpolantComputations, 3 PerfectInterpolantSequences, 0/0 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...