./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/ldv-memsafety/memleaks_test8_true-valid-memsafety_true-termination.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 635dfa2a Calling Ultimate with: java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/working_dir_b2dffb36-fb08-4b4f-a382-7c9b232a059a/bin-2019/utaipan/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/working_dir_b2dffb36-fb08-4b4f-a382-7c9b232a059a/bin-2019/utaipan/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/working_dir_b2dffb36-fb08-4b4f-a382-7c9b232a059a/bin-2019/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/working_dir_b2dffb36-fb08-4b4f-a382-7c9b232a059a/bin-2019/utaipan/config/TaipanMemDerefMemtrack.xml -i ../../sv-benchmarks/c/ldv-memsafety/memleaks_test8_true-valid-memsafety_true-termination.i -s /tmp/vcloud-vcloud-master/worker/working_dir_b2dffb36-fb08-4b4f-a382-7c9b232a059a/bin-2019/utaipan/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/working_dir_b2dffb36-fb08-4b4f-a382-7c9b232a059a/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 4662583c594beb423b258ea562778b2db7ade5d4 .................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.1.23-635dfa2 [2018-12-08 14:20:48,583 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-12-08 14:20:48,584 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-12-08 14:20:48,590 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-12-08 14:20:48,590 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-12-08 14:20:48,590 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-12-08 14:20:48,591 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-12-08 14:20:48,592 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-12-08 14:20:48,593 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-12-08 14:20:48,593 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-12-08 14:20:48,594 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-12-08 14:20:48,594 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-12-08 14:20:48,594 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-12-08 14:20:48,595 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-12-08 14:20:48,595 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-12-08 14:20:48,596 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-12-08 14:20:48,596 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-12-08 14:20:48,597 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-12-08 14:20:48,598 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-12-08 14:20:48,599 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-12-08 14:20:48,599 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-12-08 14:20:48,600 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-12-08 14:20:48,601 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-12-08 14:20:48,601 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-12-08 14:20:48,601 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-12-08 14:20:48,602 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-12-08 14:20:48,603 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-12-08 14:20:48,603 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-12-08 14:20:48,604 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-12-08 14:20:48,604 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-12-08 14:20:48,604 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-12-08 14:20:48,605 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-12-08 14:20:48,605 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-12-08 14:20:48,605 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-12-08 14:20:48,606 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-12-08 14:20:48,606 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-12-08 14:20:48,606 INFO L98 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/working_dir_b2dffb36-fb08-4b4f-a382-7c9b232a059a/bin-2019/utaipan/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Default.epf [2018-12-08 14:20:48,614 INFO L110 SettingsManager]: Loading preferences was successful [2018-12-08 14:20:48,614 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-12-08 14:20:48,615 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-12-08 14:20:48,615 INFO L133 SettingsManager]: * ... calls to implemented procedures=ONLY_FOR_CONCURRENT_PROGRAMS [2018-12-08 14:20:48,615 INFO L133 SettingsManager]: * User list type=DISABLED [2018-12-08 14:20:48,615 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-12-08 14:20:48,616 INFO L133 SettingsManager]: * Explicit value domain=true [2018-12-08 14:20:48,616 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-12-08 14:20:48,616 INFO L133 SettingsManager]: * Octagon Domain=false [2018-12-08 14:20:48,616 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-12-08 14:20:48,616 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-12-08 14:20:48,616 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-12-08 14:20:48,616 INFO L133 SettingsManager]: * Interval Domain=false [2018-12-08 14:20:48,617 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-12-08 14:20:48,617 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-12-08 14:20:48,617 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-12-08 14:20:48,617 INFO L133 SettingsManager]: * sizeof long=4 [2018-12-08 14:20:48,617 INFO L133 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2018-12-08 14:20:48,617 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-12-08 14:20:48,617 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-12-08 14:20:48,617 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-12-08 14:20:48,617 INFO L133 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2018-12-08 14:20:48,617 INFO L133 SettingsManager]: * Bitprecise bitfields=true [2018-12-08 14:20:48,618 INFO L133 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2018-12-08 14:20:48,618 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-12-08 14:20:48,618 INFO L133 SettingsManager]: * sizeof long double=12 [2018-12-08 14:20:48,618 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-12-08 14:20:48,618 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-12-08 14:20:48,618 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-12-08 14:20:48,618 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-12-08 14:20:48,618 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-12-08 14:20:48,618 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-12-08 14:20:48,618 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-12-08 14:20:48,619 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-12-08 14:20:48,619 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-12-08 14:20:48,619 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-12-08 14:20:48,619 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_b2dffb36-fb08-4b4f-a382-7c9b232a059a/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 -> 4662583c594beb423b258ea562778b2db7ade5d4 [2018-12-08 14:20:48,637 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-12-08 14:20:48,646 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-12-08 14:20:48,649 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-12-08 14:20:48,650 INFO L271 PluginConnector]: Initializing CDTParser... [2018-12-08 14:20:48,650 INFO L276 PluginConnector]: CDTParser initialized [2018-12-08 14:20:48,651 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/working_dir_b2dffb36-fb08-4b4f-a382-7c9b232a059a/bin-2019/utaipan/../../sv-benchmarks/c/ldv-memsafety/memleaks_test8_true-valid-memsafety_true-termination.i [2018-12-08 14:20:48,690 INFO L221 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_b2dffb36-fb08-4b4f-a382-7c9b232a059a/bin-2019/utaipan/data/dd21cdd36/b4e16eaadb9745cf8da442f52293ad76/FLAG924f1e33d [2018-12-08 14:20:49,105 INFO L307 CDTParser]: Found 1 translation units. [2018-12-08 14:20:49,106 INFO L161 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/working_dir_b2dffb36-fb08-4b4f-a382-7c9b232a059a/sv-benchmarks/c/ldv-memsafety/memleaks_test8_true-valid-memsafety_true-termination.i [2018-12-08 14:20:49,113 INFO L355 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_b2dffb36-fb08-4b4f-a382-7c9b232a059a/bin-2019/utaipan/data/dd21cdd36/b4e16eaadb9745cf8da442f52293ad76/FLAG924f1e33d [2018-12-08 14:20:49,121 INFO L363 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/working_dir_b2dffb36-fb08-4b4f-a382-7c9b232a059a/bin-2019/utaipan/data/dd21cdd36/b4e16eaadb9745cf8da442f52293ad76 [2018-12-08 14:20:49,123 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-12-08 14:20:49,123 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2018-12-08 14:20:49,124 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-12-08 14:20:49,124 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-12-08 14:20:49,126 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-12-08 14:20:49,126 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.12 02:20:49" (1/1) ... [2018-12-08 14:20:49,128 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4f5fc0d3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.12 02:20:49, skipping insertion in model container [2018-12-08 14:20:49,128 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.12 02:20:49" (1/1) ... [2018-12-08 14:20:49,132 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-12-08 14:20:49,154 INFO L176 MainTranslator]: Built tables and reachable declarations [2018-12-08 14:20:49,367 INFO L203 PostProcessor]: Analyzing one entry point: main [2018-12-08 14:20:49,376 INFO L191 MainTranslator]: Completed pre-run [2018-12-08 14:20:49,409 INFO L203 PostProcessor]: Analyzing one entry point: main [2018-12-08 14:20:49,440 INFO L195 MainTranslator]: Completed translation [2018-12-08 14:20:49,441 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.12 02:20:49 WrapperNode [2018-12-08 14:20:49,441 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-12-08 14:20:49,441 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-12-08 14:20:49,441 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-12-08 14:20:49,441 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-12-08 14:20:49,447 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.12 02:20:49" (1/1) ... [2018-12-08 14:20:49,457 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.12 02:20:49" (1/1) ... [2018-12-08 14:20:49,463 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-12-08 14:20:49,463 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-12-08 14:20:49,463 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-12-08 14:20:49,463 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-12-08 14:20:49,469 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.12 02:20:49" (1/1) ... [2018-12-08 14:20:49,469 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.12 02:20:49" (1/1) ... [2018-12-08 14:20:49,470 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.12 02:20:49" (1/1) ... [2018-12-08 14:20:49,470 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.12 02:20:49" (1/1) ... [2018-12-08 14:20:49,475 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.12 02:20:49" (1/1) ... [2018-12-08 14:20:49,476 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.12 02:20:49" (1/1) ... [2018-12-08 14:20:49,477 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.12 02:20:49" (1/1) ... [2018-12-08 14:20:49,478 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-12-08 14:20:49,478 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-12-08 14:20:49,478 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-12-08 14:20:49,478 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-12-08 14:20:49,479 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.12 02:20:49" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_b2dffb36-fb08-4b4f-a382-7c9b232a059a/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 [2018-12-08 14:20:49,510 INFO L130 BoogieDeclarations]: Found specification of procedure alloc_8 [2018-12-08 14:20:49,510 INFO L138 BoogieDeclarations]: Found implementation of procedure alloc_8 [2018-12-08 14:20:49,510 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.alloc [2018-12-08 14:20:49,510 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2018-12-08 14:20:49,511 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2018-12-08 14:20:49,511 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-12-08 14:20:49,511 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-12-08 14:20:49,511 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-12-08 14:20:49,511 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-12-08 14:20:49,511 INFO L130 BoogieDeclarations]: Found specification of procedure free_8 [2018-12-08 14:20:49,511 INFO L138 BoogieDeclarations]: Found implementation of procedure free_8 [2018-12-08 14:20:49,511 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2018-12-08 14:20:49,511 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2018-12-08 14:20:49,511 INFO L130 BoogieDeclarations]: Found specification of procedure entry_point [2018-12-08 14:20:49,511 INFO L138 BoogieDeclarations]: Found implementation of procedure entry_point [2018-12-08 14:20:49,511 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-12-08 14:20:49,511 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-12-08 14:20:49,627 INFO L275 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-12-08 14:20:49,628 INFO L280 CfgBuilder]: Removed 0 assue(true) statements. [2018-12-08 14:20:49,628 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 08.12 02:20:49 BoogieIcfgContainer [2018-12-08 14:20:49,628 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-12-08 14:20:49,629 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-12-08 14:20:49,629 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-12-08 14:20:49,632 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-12-08 14:20:49,632 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 08.12 02:20:49" (1/3) ... [2018-12-08 14:20:49,632 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@440e37f5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.12 02:20:49, skipping insertion in model container [2018-12-08 14:20:49,633 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.12 02:20:49" (2/3) ... [2018-12-08 14:20:49,633 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@440e37f5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.12 02:20:49, skipping insertion in model container [2018-12-08 14:20:49,633 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 08.12 02:20:49" (3/3) ... [2018-12-08 14:20:49,634 INFO L112 eAbstractionObserver]: Analyzing ICFG memleaks_test8_true-valid-memsafety_true-termination.i [2018-12-08 14:20:49,643 INFO L156 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-12-08 14:20:49,648 INFO L168 ceAbstractionStarter]: Appying trace abstraction to program that has 3 error locations. [2018-12-08 14:20:49,661 INFO L257 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2018-12-08 14:20:49,679 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-12-08 14:20:49,679 INFO L383 AbstractCegarLoop]: Hoare is false [2018-12-08 14:20:49,680 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-12-08 14:20:49,680 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-12-08 14:20:49,680 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-12-08 14:20:49,680 INFO L387 AbstractCegarLoop]: Difference is false [2018-12-08 14:20:49,680 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-12-08 14:20:49,680 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-12-08 14:20:49,690 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states. [2018-12-08 14:20:49,695 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2018-12-08 14:20:49,696 INFO L394 BasicCegarLoop]: Found error trace [2018-12-08 14:20:49,696 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-08 14:20:49,697 INFO L423 AbstractCegarLoop]: === Iteration 1 === [free_8Err0ASSERT_VIOLATIONMEMORY_FREE, free_8Err1ASSERT_VIOLATIONMEMORY_FREE, mainErr0ENSURES_VIOLATIONMEMORY_LEAK]=== [2018-12-08 14:20:49,701 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-08 14:20:49,701 INFO L82 PathProgramCache]: Analyzing trace with hash 1922122706, now seen corresponding path program 1 times [2018-12-08 14:20:49,703 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-12-08 14:20:49,737 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-08 14:20:49,738 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-08 14:20:49,738 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-08 14:20:49,738 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-12-08 14:20:49,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-08 14:20:49,827 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-08 14:20:49,829 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-12-08 14:20:49,829 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-12-08 14:20:49,829 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-12-08 14:20:49,832 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-12-08 14:20:49,840 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-12-08 14:20:49,840 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-12-08 14:20:49,841 INFO L87 Difference]: Start difference. First operand 31 states. Second operand 5 states. [2018-12-08 14:20:49,890 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-08 14:20:49,890 INFO L93 Difference]: Finished difference Result 30 states and 31 transitions. [2018-12-08 14:20:49,891 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-12-08 14:20:49,892 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 18 [2018-12-08 14:20:49,892 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-08 14:20:49,897 INFO L225 Difference]: With dead ends: 30 [2018-12-08 14:20:49,897 INFO L226 Difference]: Without dead ends: 27 [2018-12-08 14:20:49,900 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2018-12-08 14:20:49,910 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2018-12-08 14:20:49,919 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 27. [2018-12-08 14:20:49,920 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2018-12-08 14:20:49,921 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 28 transitions. [2018-12-08 14:20:49,922 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 28 transitions. Word has length 18 [2018-12-08 14:20:49,922 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-08 14:20:49,922 INFO L480 AbstractCegarLoop]: Abstraction has 27 states and 28 transitions. [2018-12-08 14:20:49,922 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-12-08 14:20:49,922 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 28 transitions. [2018-12-08 14:20:49,923 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2018-12-08 14:20:49,923 INFO L394 BasicCegarLoop]: Found error trace [2018-12-08 14:20:49,923 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-08 14:20:49,923 INFO L423 AbstractCegarLoop]: === Iteration 2 === [free_8Err0ASSERT_VIOLATIONMEMORY_FREE, free_8Err1ASSERT_VIOLATIONMEMORY_FREE, mainErr0ENSURES_VIOLATIONMEMORY_LEAK]=== [2018-12-08 14:20:49,923 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-08 14:20:49,923 INFO L82 PathProgramCache]: Analyzing trace with hash -543738222, now seen corresponding path program 1 times [2018-12-08 14:20:49,923 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-12-08 14:20:49,925 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-08 14:20:49,925 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-08 14:20:49,925 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-08 14:20:49,925 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-12-08 14:20:49,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-08 14:20:49,982 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-08 14:20:49,982 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-12-08 14:20:49,982 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-12-08 14:20:49,982 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-12-08 14:20:49,983 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-12-08 14:20:49,984 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-12-08 14:20:49,984 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-12-08 14:20:49,984 INFO L87 Difference]: Start difference. First operand 27 states and 28 transitions. Second operand 5 states. [2018-12-08 14:20:50,020 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-08 14:20:50,020 INFO L93 Difference]: Finished difference Result 39 states and 42 transitions. [2018-12-08 14:20:50,020 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-12-08 14:20:50,020 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 19 [2018-12-08 14:20:50,020 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-08 14:20:50,022 INFO L225 Difference]: With dead ends: 39 [2018-12-08 14:20:50,022 INFO L226 Difference]: Without dead ends: 39 [2018-12-08 14:20:50,023 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-12-08 14:20:50,023 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39 states. [2018-12-08 14:20:50,028 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 38. [2018-12-08 14:20:50,028 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38 states. [2018-12-08 14:20:50,029 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 41 transitions. [2018-12-08 14:20:50,029 INFO L78 Accepts]: Start accepts. Automaton has 38 states and 41 transitions. Word has length 19 [2018-12-08 14:20:50,029 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-08 14:20:50,029 INFO L480 AbstractCegarLoop]: Abstraction has 38 states and 41 transitions. [2018-12-08 14:20:50,029 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-12-08 14:20:50,029 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 41 transitions. [2018-12-08 14:20:50,030 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2018-12-08 14:20:50,030 INFO L394 BasicCegarLoop]: Found error trace [2018-12-08 14:20:50,031 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-08 14:20:50,031 INFO L423 AbstractCegarLoop]: === Iteration 3 === [free_8Err0ASSERT_VIOLATIONMEMORY_FREE, free_8Err1ASSERT_VIOLATIONMEMORY_FREE, mainErr0ENSURES_VIOLATIONMEMORY_LEAK]=== [2018-12-08 14:20:50,031 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-08 14:20:50,031 INFO L82 PathProgramCache]: Analyzing trace with hash -740251727, now seen corresponding path program 1 times [2018-12-08 14:20:50,031 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-12-08 14:20:50,032 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-08 14:20:50,033 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-08 14:20:50,033 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-08 14:20:50,033 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-12-08 14:20:50,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-08 14:20:50,068 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-08 14:20:50,068 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-12-08 14:20:50,069 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-12-08 14:20:50,069 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-12-08 14:20:50,069 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-12-08 14:20:50,069 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-12-08 14:20:50,069 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-12-08 14:20:50,069 INFO L87 Difference]: Start difference. First operand 38 states and 41 transitions. Second operand 5 states. [2018-12-08 14:20:50,102 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-08 14:20:50,102 INFO L93 Difference]: Finished difference Result 38 states and 39 transitions. [2018-12-08 14:20:50,102 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-12-08 14:20:50,102 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 19 [2018-12-08 14:20:50,102 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-08 14:20:50,103 INFO L225 Difference]: With dead ends: 38 [2018-12-08 14:20:50,103 INFO L226 Difference]: Without dead ends: 38 [2018-12-08 14:20:50,103 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2018-12-08 14:20:50,104 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states. [2018-12-08 14:20:50,105 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 35. [2018-12-08 14:20:50,105 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2018-12-08 14:20:50,106 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 36 transitions. [2018-12-08 14:20:50,106 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 36 transitions. Word has length 19 [2018-12-08 14:20:50,106 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-08 14:20:50,106 INFO L480 AbstractCegarLoop]: Abstraction has 35 states and 36 transitions. [2018-12-08 14:20:50,106 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-12-08 14:20:50,107 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 36 transitions. [2018-12-08 14:20:50,107 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2018-12-08 14:20:50,107 INFO L394 BasicCegarLoop]: Found error trace [2018-12-08 14:20:50,107 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] [2018-12-08 14:20:50,107 INFO L423 AbstractCegarLoop]: === Iteration 4 === [free_8Err0ASSERT_VIOLATIONMEMORY_FREE, free_8Err1ASSERT_VIOLATIONMEMORY_FREE, mainErr0ENSURES_VIOLATIONMEMORY_LEAK]=== [2018-12-08 14:20:50,107 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-08 14:20:50,108 INFO L82 PathProgramCache]: Analyzing trace with hash -2032292275, now seen corresponding path program 1 times [2018-12-08 14:20:50,108 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-12-08 14:20:50,108 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-08 14:20:50,109 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-08 14:20:50,109 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-08 14:20:50,109 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-12-08 14:20:50,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-08 14:20:50,138 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-08 14:20:50,138 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-12-08 14:20:50,138 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-12-08 14:20:50,138 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-12-08 14:20:50,138 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-12-08 14:20:50,138 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-12-08 14:20:50,138 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2018-12-08 14:20:50,138 INFO L87 Difference]: Start difference. First operand 35 states and 36 transitions. Second operand 6 states. [2018-12-08 14:20:50,169 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-08 14:20:50,169 INFO L93 Difference]: Finished difference Result 36 states and 36 transitions. [2018-12-08 14:20:50,170 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-12-08 14:20:50,170 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 23 [2018-12-08 14:20:50,170 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-08 14:20:50,170 INFO L225 Difference]: With dead ends: 36 [2018-12-08 14:20:50,170 INFO L226 Difference]: Without dead ends: 36 [2018-12-08 14:20:50,171 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2018-12-08 14:20:50,171 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2018-12-08 14:20:50,172 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 35. [2018-12-08 14:20:50,172 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2018-12-08 14:20:50,173 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 35 transitions. [2018-12-08 14:20:50,173 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 35 transitions. Word has length 23 [2018-12-08 14:20:50,173 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-08 14:20:50,173 INFO L480 AbstractCegarLoop]: Abstraction has 35 states and 35 transitions. [2018-12-08 14:20:50,173 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-12-08 14:20:50,173 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 35 transitions. [2018-12-08 14:20:50,174 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2018-12-08 14:20:50,174 INFO L394 BasicCegarLoop]: Found error trace [2018-12-08 14:20:50,174 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] [2018-12-08 14:20:50,174 INFO L423 AbstractCegarLoop]: === Iteration 5 === [free_8Err0ASSERT_VIOLATIONMEMORY_FREE, free_8Err1ASSERT_VIOLATIONMEMORY_FREE, mainErr0ENSURES_VIOLATIONMEMORY_LEAK]=== [2018-12-08 14:20:50,174 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-08 14:20:50,174 INFO L82 PathProgramCache]: Analyzing trace with hash 1757116396, now seen corresponding path program 1 times [2018-12-08 14:20:50,174 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-12-08 14:20:50,175 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-08 14:20:50,175 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-08 14:20:50,175 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-08 14:20:50,175 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-12-08 14:20:50,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-08 14:20:50,191 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-08 14:20:50,191 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-12-08 14:20:50,192 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-12-08 14:20:50,192 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-12-08 14:20:50,192 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-12-08 14:20:50,192 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-12-08 14:20:50,192 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-12-08 14:20:50,192 INFO L87 Difference]: Start difference. First operand 35 states and 35 transitions. Second operand 3 states. [2018-12-08 14:20:50,208 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-08 14:20:50,208 INFO L93 Difference]: Finished difference Result 39 states and 38 transitions. [2018-12-08 14:20:50,208 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-12-08 14:20:50,208 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 23 [2018-12-08 14:20:50,208 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-08 14:20:50,209 INFO L225 Difference]: With dead ends: 39 [2018-12-08 14:20:50,209 INFO L226 Difference]: Without dead ends: 26 [2018-12-08 14:20:50,209 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-12-08 14:20:50,209 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states. [2018-12-08 14:20:50,210 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 26. [2018-12-08 14:20:50,210 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26 states. [2018-12-08 14:20:50,211 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 25 transitions. [2018-12-08 14:20:50,211 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 25 transitions. Word has length 23 [2018-12-08 14:20:50,211 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-08 14:20:50,211 INFO L480 AbstractCegarLoop]: Abstraction has 26 states and 25 transitions. [2018-12-08 14:20:50,211 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-12-08 14:20:50,211 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 25 transitions. [2018-12-08 14:20:50,211 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2018-12-08 14:20:50,212 INFO L394 BasicCegarLoop]: Found error trace [2018-12-08 14:20:50,212 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-08 14:20:50,212 INFO L423 AbstractCegarLoop]: === Iteration 6 === [free_8Err0ASSERT_VIOLATIONMEMORY_FREE, free_8Err1ASSERT_VIOLATIONMEMORY_FREE, mainErr0ENSURES_VIOLATIONMEMORY_LEAK]=== [2018-12-08 14:20:50,212 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-08 14:20:50,212 INFO L82 PathProgramCache]: Analyzing trace with hash -1769520759, now seen corresponding path program 1 times [2018-12-08 14:20:50,212 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-12-08 14:20:50,213 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-08 14:20:50,213 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-08 14:20:50,213 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-08 14:20:50,213 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-12-08 14:20:50,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-08 14:20:50,281 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-08 14:20:50,281 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-12-08 14:20:50,281 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2018-12-08 14:20:50,281 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-12-08 14:20:50,281 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2018-12-08 14:20:50,281 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2018-12-08 14:20:50,282 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2018-12-08 14:20:50,282 INFO L87 Difference]: Start difference. First operand 26 states and 25 transitions. Second operand 8 states. [2018-12-08 14:20:50,328 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-08 14:20:50,328 INFO L93 Difference]: Finished difference Result 25 states and 24 transitions. [2018-12-08 14:20:50,329 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-12-08 14:20:50,329 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 25 [2018-12-08 14:20:50,329 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-08 14:20:50,329 INFO L225 Difference]: With dead ends: 25 [2018-12-08 14:20:50,329 INFO L226 Difference]: Without dead ends: 0 [2018-12-08 14:20:50,330 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 7 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2018-12-08 14:20:50,330 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2018-12-08 14:20:50,330 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2018-12-08 14:20:50,330 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2018-12-08 14:20:50,330 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2018-12-08 14:20:50,330 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 25 [2018-12-08 14:20:50,330 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-08 14:20:50,331 INFO L480 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2018-12-08 14:20:50,331 INFO L481 AbstractCegarLoop]: Interpolant automaton has 8 states. [2018-12-08 14:20:50,331 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2018-12-08 14:20:50,331 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2018-12-08 14:20:50,334 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 08.12 02:20:50 BoogieIcfgContainer [2018-12-08 14:20:50,334 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-12-08 14:20:50,334 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2018-12-08 14:20:50,334 INFO L271 PluginConnector]: Initializing Witness Printer... [2018-12-08 14:20:50,335 INFO L276 PluginConnector]: Witness Printer initialized [2018-12-08 14:20:50,335 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 08.12 02:20:49" (3/4) ... [2018-12-08 14:20:50,337 INFO L144 WitnessPrinter]: Generating witness for correct program [2018-12-08 14:20:50,341 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure free_8 [2018-12-08 14:20:50,342 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure ldv_malloc [2018-12-08 14:20:50,342 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure ULTIMATE.init [2018-12-08 14:20:50,342 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure alloc_8 [2018-12-08 14:20:50,342 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure main [2018-12-08 14:20:50,342 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure entry_point [2018-12-08 14:20:50,345 INFO L905 BoogieBacktranslator]: Reduced CFG by removing 13 nodes and edges [2018-12-08 14:20:50,346 INFO L905 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2018-12-08 14:20:50,346 INFO L905 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2018-12-08 14:20:50,371 INFO L145 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/working_dir_b2dffb36-fb08-4b4f-a382-7c9b232a059a/bin-2019/utaipan/witness.graphml [2018-12-08 14:20:50,371 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2018-12-08 14:20:50,372 INFO L168 Benchmark]: Toolchain (without parser) took 1248.68 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 65.5 MB). Free memory was 953.5 MB in the beginning and 891.8 MB in the end (delta: 61.6 MB). Peak memory consumption was 127.2 MB. Max. memory is 11.5 GB. [2018-12-08 14:20:50,373 INFO L168 Benchmark]: CDTParser took 0.18 ms. Allocated memory is still 1.0 GB. Free memory is still 978.7 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-12-08 14:20:50,373 INFO L168 Benchmark]: CACSL2BoogieTranslator took 316.96 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 65.5 MB). Free memory was 953.5 MB in the beginning and 1.0 GB in the end (delta: -87.0 MB). Peak memory consumption was 30.9 MB. Max. memory is 11.5 GB. [2018-12-08 14:20:50,373 INFO L168 Benchmark]: Boogie Procedure Inliner took 21.71 ms. Allocated memory is still 1.1 GB. Free memory was 1.0 GB in the beginning and 1.0 GB in the end (delta: 7.3 MB). Peak memory consumption was 7.3 MB. Max. memory is 11.5 GB. [2018-12-08 14:20:50,373 INFO L168 Benchmark]: Boogie Preprocessor took 15.05 ms. Allocated memory is still 1.1 GB. Free memory is still 1.0 GB. There was no memory consumed. Max. memory is 11.5 GB. [2018-12-08 14:20:50,374 INFO L168 Benchmark]: RCFGBuilder took 149.86 ms. Allocated memory is still 1.1 GB. Free memory was 1.0 GB in the beginning and 1.0 GB in the end (delta: 19.5 MB). Peak memory consumption was 19.5 MB. Max. memory is 11.5 GB. [2018-12-08 14:20:50,374 INFO L168 Benchmark]: TraceAbstraction took 705.19 ms. Allocated memory is still 1.1 GB. Free memory was 1.0 GB in the beginning and 899.1 MB in the end (delta: 114.6 MB). Peak memory consumption was 114.6 MB. Max. memory is 11.5 GB. [2018-12-08 14:20:50,374 INFO L168 Benchmark]: Witness Printer took 36.85 ms. Allocated memory is still 1.1 GB. Free memory was 899.1 MB in the beginning and 891.8 MB in the end (delta: 7.3 MB). Peak memory consumption was 7.3 MB. Max. memory is 11.5 GB. [2018-12-08 14:20:50,376 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.18 ms. Allocated memory is still 1.0 GB. Free memory is still 978.7 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 316.96 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 65.5 MB). Free memory was 953.5 MB in the beginning and 1.0 GB in the end (delta: -87.0 MB). Peak memory consumption was 30.9 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 21.71 ms. Allocated memory is still 1.1 GB. Free memory was 1.0 GB in the beginning and 1.0 GB in the end (delta: 7.3 MB). Peak memory consumption was 7.3 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 15.05 ms. Allocated memory is still 1.1 GB. Free memory is still 1.0 GB. There was no memory consumed. Max. memory is 11.5 GB. * RCFGBuilder took 149.86 ms. Allocated memory is still 1.1 GB. Free memory was 1.0 GB in the beginning and 1.0 GB in the end (delta: 19.5 MB). Peak memory consumption was 19.5 MB. Max. memory is 11.5 GB. * TraceAbstraction took 705.19 ms. Allocated memory is still 1.1 GB. Free memory was 1.0 GB in the beginning and 899.1 MB in the end (delta: 114.6 MB). Peak memory consumption was 114.6 MB. Max. memory is 11.5 GB. * Witness Printer took 36.85 ms. Allocated memory is still 1.1 GB. Free memory was 899.1 MB in the beginning and 891.8 MB in the end (delta: 7.3 MB). Peak memory consumption was 7.3 MB. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 1441]: free always succeeds For all program executions holds that free always succeeds at this location - PositiveResult [Line: 1441]: free always succeeds For all program executions holds that free always succeeds at this location - PositiveResult [Line: 1450]: all allocated memory was freed For all program executions holds that all allocated memory was freed at this location - AllSpecificationsHoldResult: All specifications hold 3 specifications checked. All of them hold - StatisticsResult: Ultimate Automizer benchmark data CFG has 7 procedures, 31 locations, 3 error locations. SAFE Result, 0.6s OverallTime, 6 OverallIterations, 1 TraceHistogramMax, 0.2s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 155 SDtfs, 72 SDslu, 282 SDs, 0 SdLazy, 169 SolverSat, 27 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 51 GetRequests, 22 SyntacticMatches, 2 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=38occurred 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, 6 MinimizatonAttempts, 5 StatesRemovedByMinimization, 3 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.2s InterpolantComputationTime, 127 NumberOfCodeBlocks, 127 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 121 ConstructedInterpolants, 0 QuantifiedInterpolants, 8649 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 6 InterpolantComputations, 6 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...