./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/ldv-memsafety/memleaks_test1_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_16226813-55f3-4b39-8ad4-2557f5fb4e90/bin-2019/utaipan/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/working_dir_16226813-55f3-4b39-8ad4-2557f5fb4e90/bin-2019/utaipan/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/working_dir_16226813-55f3-4b39-8ad4-2557f5fb4e90/bin-2019/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/working_dir_16226813-55f3-4b39-8ad4-2557f5fb4e90/bin-2019/utaipan/config/TaipanMemDerefMemtrack.xml -i ../../sv-benchmarks/c/ldv-memsafety/memleaks_test1_true-valid-memsafety_true-termination.i -s /tmp/vcloud-vcloud-master/worker/working_dir_16226813-55f3-4b39-8ad4-2557f5fb4e90/bin-2019/utaipan/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/working_dir_16226813-55f3-4b39-8ad4-2557f5fb4e90/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 491439880e86433c818e36cdfce985ca1223a7f1 ................................................................................................................................................................................................................................................................................................................................................................................................................................. Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.1.23-635dfa2 [2018-12-09 17:43:43,863 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-12-09 17:43:43,864 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-12-09 17:43:43,870 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-12-09 17:43:43,870 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-12-09 17:43:43,870 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-12-09 17:43:43,871 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-12-09 17:43:43,872 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-12-09 17:43:43,872 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-12-09 17:43:43,873 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-12-09 17:43:43,873 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-12-09 17:43:43,873 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-12-09 17:43:43,874 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-12-09 17:43:43,874 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-12-09 17:43:43,875 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-12-09 17:43:43,875 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-12-09 17:43:43,875 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-12-09 17:43:43,876 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-12-09 17:43:43,877 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-12-09 17:43:43,878 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-12-09 17:43:43,878 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-12-09 17:43:43,879 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-12-09 17:43:43,880 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-12-09 17:43:43,880 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-12-09 17:43:43,880 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-12-09 17:43:43,880 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-12-09 17:43:43,881 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-12-09 17:43:43,881 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-12-09 17:43:43,881 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-12-09 17:43:43,882 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-12-09 17:43:43,882 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-12-09 17:43:43,882 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-12-09 17:43:43,882 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-12-09 17:43:43,883 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-12-09 17:43:43,883 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-12-09 17:43:43,883 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-12-09 17:43:43,883 INFO L98 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/working_dir_16226813-55f3-4b39-8ad4-2557f5fb4e90/bin-2019/utaipan/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Default.epf [2018-12-09 17:43:43,890 INFO L110 SettingsManager]: Loading preferences was successful [2018-12-09 17:43:43,891 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-12-09 17:43:43,891 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-12-09 17:43:43,891 INFO L133 SettingsManager]: * ... calls to implemented procedures=ONLY_FOR_CONCURRENT_PROGRAMS [2018-12-09 17:43:43,891 INFO L133 SettingsManager]: * User list type=DISABLED [2018-12-09 17:43:43,891 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-12-09 17:43:43,891 INFO L133 SettingsManager]: * Explicit value domain=true [2018-12-09 17:43:43,892 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-12-09 17:43:43,892 INFO L133 SettingsManager]: * Octagon Domain=false [2018-12-09 17:43:43,892 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-12-09 17:43:43,892 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-12-09 17:43:43,892 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-12-09 17:43:43,892 INFO L133 SettingsManager]: * Interval Domain=false [2018-12-09 17:43:43,892 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-12-09 17:43:43,892 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-12-09 17:43:43,892 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-12-09 17:43:43,893 INFO L133 SettingsManager]: * sizeof long=4 [2018-12-09 17:43:43,893 INFO L133 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2018-12-09 17:43:43,893 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-12-09 17:43:43,893 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-12-09 17:43:43,893 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-12-09 17:43:43,893 INFO L133 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2018-12-09 17:43:43,893 INFO L133 SettingsManager]: * Bitprecise bitfields=true [2018-12-09 17:43:43,893 INFO L133 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2018-12-09 17:43:43,893 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-12-09 17:43:43,893 INFO L133 SettingsManager]: * sizeof long double=12 [2018-12-09 17:43:43,894 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-12-09 17:43:43,894 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-12-09 17:43:43,894 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-12-09 17:43:43,894 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-12-09 17:43:43,894 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-12-09 17:43:43,894 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-12-09 17:43:43,894 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-12-09 17:43:43,894 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-12-09 17:43:43,894 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-12-09 17:43:43,894 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-12-09 17:43:43,894 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_16226813-55f3-4b39-8ad4-2557f5fb4e90/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 -> 491439880e86433c818e36cdfce985ca1223a7f1 [2018-12-09 17:43:43,911 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-12-09 17:43:43,918 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-12-09 17:43:43,920 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-12-09 17:43:43,921 INFO L271 PluginConnector]: Initializing CDTParser... [2018-12-09 17:43:43,922 INFO L276 PluginConnector]: CDTParser initialized [2018-12-09 17:43:43,922 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/working_dir_16226813-55f3-4b39-8ad4-2557f5fb4e90/bin-2019/utaipan/../../sv-benchmarks/c/ldv-memsafety/memleaks_test1_true-valid-memsafety_true-termination.i [2018-12-09 17:43:43,956 INFO L221 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_16226813-55f3-4b39-8ad4-2557f5fb4e90/bin-2019/utaipan/data/f75cc3c0d/5690b86cd91842aa905b105e44266703/FLAG040452f9c [2018-12-09 17:43:44,430 INFO L307 CDTParser]: Found 1 translation units. [2018-12-09 17:43:44,430 INFO L161 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/working_dir_16226813-55f3-4b39-8ad4-2557f5fb4e90/sv-benchmarks/c/ldv-memsafety/memleaks_test1_true-valid-memsafety_true-termination.i [2018-12-09 17:43:44,440 INFO L355 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_16226813-55f3-4b39-8ad4-2557f5fb4e90/bin-2019/utaipan/data/f75cc3c0d/5690b86cd91842aa905b105e44266703/FLAG040452f9c [2018-12-09 17:43:44,449 INFO L363 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/working_dir_16226813-55f3-4b39-8ad4-2557f5fb4e90/bin-2019/utaipan/data/f75cc3c0d/5690b86cd91842aa905b105e44266703 [2018-12-09 17:43:44,451 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-12-09 17:43:44,452 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2018-12-09 17:43:44,452 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-12-09 17:43:44,452 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-12-09 17:43:44,455 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-12-09 17:43:44,455 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.12 05:43:44" (1/1) ... [2018-12-09 17:43:44,457 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 05:43:44, skipping insertion in model container [2018-12-09 17:43:44,457 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.12 05:43:44" (1/1) ... [2018-12-09 17:43:44,461 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-12-09 17:43:44,489 INFO L176 MainTranslator]: Built tables and reachable declarations [2018-12-09 17:43:44,706 INFO L203 PostProcessor]: Analyzing one entry point: main [2018-12-09 17:43:44,715 INFO L191 MainTranslator]: Completed pre-run [2018-12-09 17:43:44,748 INFO L203 PostProcessor]: Analyzing one entry point: main [2018-12-09 17:43:44,778 INFO L195 MainTranslator]: Completed translation [2018-12-09 17:43:44,778 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 05:43:44 WrapperNode [2018-12-09 17:43:44,779 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-12-09 17:43:44,779 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-12-09 17:43:44,779 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-12-09 17:43:44,779 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-12-09 17:43:44,784 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 05:43:44" (1/1) ... [2018-12-09 17:43:44,795 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 05:43:44" (1/1) ... [2018-12-09 17:43:44,800 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-12-09 17:43:44,800 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-12-09 17:43:44,800 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-12-09 17:43:44,800 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-12-09 17:43:44,805 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 05:43:44" (1/1) ... [2018-12-09 17:43:44,806 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 05:43:44" (1/1) ... [2018-12-09 17:43:44,807 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 05:43:44" (1/1) ... [2018-12-09 17:43:44,807 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 05:43:44" (1/1) ... [2018-12-09 17:43:44,810 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 05:43:44" (1/1) ... [2018-12-09 17:43:44,811 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 05:43:44" (1/1) ... [2018-12-09 17:43:44,812 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 05:43:44" (1/1) ... [2018-12-09 17:43:44,813 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-12-09 17:43:44,813 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-12-09 17:43:44,813 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-12-09 17:43:44,813 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-12-09 17:43:44,814 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 05:43:44" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_16226813-55f3-4b39-8ad4-2557f5fb4e90/bin-2019/utaipan/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-12-09 17:43:44,845 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.alloc [2018-12-09 17:43:44,845 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2018-12-09 17:43:44,845 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2018-12-09 17:43:44,846 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-12-09 17:43:44,846 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-12-09 17:43:44,846 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-12-09 17:43:44,846 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-12-09 17:43:44,846 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2018-12-09 17:43:44,846 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2018-12-09 17:43:44,846 INFO L130 BoogieDeclarations]: Found specification of procedure entry_point [2018-12-09 17:43:44,846 INFO L138 BoogieDeclarations]: Found implementation of procedure entry_point [2018-12-09 17:43:44,846 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-12-09 17:43:44,846 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-12-09 17:43:44,946 INFO L275 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-12-09 17:43:44,947 INFO L280 CfgBuilder]: Removed 0 assue(true) statements. [2018-12-09 17:43:44,947 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.12 05:43:44 BoogieIcfgContainer [2018-12-09 17:43:44,947 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-12-09 17:43:44,948 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-12-09 17:43:44,948 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-12-09 17:43:44,949 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-12-09 17:43:44,950 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 09.12 05:43:44" (1/3) ... [2018-12-09 17:43:44,950 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@150b8851 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.12 05:43:44, skipping insertion in model container [2018-12-09 17:43:44,950 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 05:43:44" (2/3) ... [2018-12-09 17:43:44,950 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@150b8851 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.12 05:43:44, skipping insertion in model container [2018-12-09 17:43:44,950 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.12 05:43:44" (3/3) ... [2018-12-09 17:43:44,951 INFO L112 eAbstractionObserver]: Analyzing ICFG memleaks_test1_true-valid-memsafety_true-termination.i [2018-12-09 17:43:44,957 INFO L156 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-12-09 17:43:44,961 INFO L168 ceAbstractionStarter]: Appying trace abstraction to program that has 3 error locations. [2018-12-09 17:43:44,970 INFO L257 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2018-12-09 17:43:44,984 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-12-09 17:43:44,984 INFO L383 AbstractCegarLoop]: Hoare is false [2018-12-09 17:43:44,984 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-12-09 17:43:44,984 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-12-09 17:43:44,984 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-12-09 17:43:44,985 INFO L387 AbstractCegarLoop]: Difference is false [2018-12-09 17:43:44,985 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-12-09 17:43:44,985 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-12-09 17:43:44,993 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states. [2018-12-09 17:43:45,000 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2018-12-09 17:43:45,000 INFO L394 BasicCegarLoop]: Found error trace [2018-12-09 17:43:45,001 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-09 17:43:45,002 INFO L423 AbstractCegarLoop]: === Iteration 1 === [mainErr0ENSURES_VIOLATIONMEMORY_LEAK, entry_pointErr0ASSERT_VIOLATIONMEMORY_FREE, entry_pointErr1ASSERT_VIOLATIONMEMORY_FREE]=== [2018-12-09 17:43:45,005 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-09 17:43:45,005 INFO L82 PathProgramCache]: Analyzing trace with hash -1125097357, now seen corresponding path program 1 times [2018-12-09 17:43:45,007 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-12-09 17:43:45,039 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-09 17:43:45,039 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-09 17:43:45,039 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-09 17:43:45,040 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-12-09 17:43:45,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-09 17:43:45,123 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-09 17:43:45,124 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-12-09 17:43:45,124 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-12-09 17:43:45,124 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-12-09 17:43:45,127 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-12-09 17:43:45,135 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-12-09 17:43:45,135 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-12-09 17:43:45,136 INFO L87 Difference]: Start difference. First operand 23 states. Second operand 5 states. [2018-12-09 17:43:45,153 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-09 17:43:45,153 INFO L93 Difference]: Finished difference Result 22 states and 22 transitions. [2018-12-09 17:43:45,154 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-12-09 17:43:45,155 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 13 [2018-12-09 17:43:45,155 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-09 17:43:45,160 INFO L225 Difference]: With dead ends: 22 [2018-12-09 17:43:45,160 INFO L226 Difference]: Without dead ends: 19 [2018-12-09 17:43:45,161 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-12-09 17:43:45,171 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19 states. [2018-12-09 17:43:45,179 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19 to 19. [2018-12-09 17:43:45,180 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2018-12-09 17:43:45,180 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 19 transitions. [2018-12-09 17:43:45,181 INFO L78 Accepts]: Start accepts. Automaton has 19 states and 19 transitions. Word has length 13 [2018-12-09 17:43:45,181 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-09 17:43:45,181 INFO L480 AbstractCegarLoop]: Abstraction has 19 states and 19 transitions. [2018-12-09 17:43:45,181 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-12-09 17:43:45,182 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 19 transitions. [2018-12-09 17:43:45,182 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2018-12-09 17:43:45,182 INFO L394 BasicCegarLoop]: Found error trace [2018-12-09 17:43:45,182 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-09 17:43:45,182 INFO L423 AbstractCegarLoop]: === Iteration 2 === [mainErr0ENSURES_VIOLATIONMEMORY_LEAK, entry_pointErr0ASSERT_VIOLATIONMEMORY_FREE, entry_pointErr1ASSERT_VIOLATIONMEMORY_FREE]=== [2018-12-09 17:43:45,182 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-09 17:43:45,183 INFO L82 PathProgramCache]: Analyzing trace with hash -518279650, now seen corresponding path program 1 times [2018-12-09 17:43:45,183 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-12-09 17:43:45,184 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-09 17:43:45,184 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-09 17:43:45,184 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-09 17:43:45,184 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-12-09 17:43:45,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-09 17:43:45,222 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-09 17:43:45,222 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-12-09 17:43:45,222 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-12-09 17:43:45,222 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-12-09 17:43:45,223 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-12-09 17:43:45,223 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-12-09 17:43:45,224 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-12-09 17:43:45,224 INFO L87 Difference]: Start difference. First operand 19 states and 19 transitions. Second operand 5 states. [2018-12-09 17:43:45,245 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-09 17:43:45,245 INFO L93 Difference]: Finished difference Result 24 states and 24 transitions. [2018-12-09 17:43:45,246 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-12-09 17:43:45,246 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 14 [2018-12-09 17:43:45,246 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-09 17:43:45,246 INFO L225 Difference]: With dead ends: 24 [2018-12-09 17:43:45,247 INFO L226 Difference]: Without dead ends: 24 [2018-12-09 17:43:45,247 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-12-09 17:43:45,247 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24 states. [2018-12-09 17:43:45,249 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24 to 24. [2018-12-09 17:43:45,249 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2018-12-09 17:43:45,250 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 24 transitions. [2018-12-09 17:43:45,250 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 24 transitions. Word has length 14 [2018-12-09 17:43:45,250 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-09 17:43:45,250 INFO L480 AbstractCegarLoop]: Abstraction has 24 states and 24 transitions. [2018-12-09 17:43:45,250 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-12-09 17:43:45,250 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 24 transitions. [2018-12-09 17:43:45,251 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2018-12-09 17:43:45,251 INFO L394 BasicCegarLoop]: Found error trace [2018-12-09 17:43:45,251 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-09 17:43:45,251 INFO L423 AbstractCegarLoop]: === Iteration 3 === [mainErr0ENSURES_VIOLATIONMEMORY_LEAK, entry_pointErr0ASSERT_VIOLATIONMEMORY_FREE, entry_pointErr1ASSERT_VIOLATIONMEMORY_FREE]=== [2018-12-09 17:43:45,251 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-09 17:43:45,251 INFO L82 PathProgramCache]: Analyzing trace with hash -489650499, now seen corresponding path program 1 times [2018-12-09 17:43:45,251 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-12-09 17:43:45,253 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-09 17:43:45,253 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-09 17:43:45,253 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-09 17:43:45,253 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-12-09 17:43:45,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-09 17:43:45,283 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-09 17:43:45,284 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-12-09 17:43:45,284 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-12-09 17:43:45,284 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-12-09 17:43:45,284 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-12-09 17:43:45,284 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-12-09 17:43:45,284 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-12-09 17:43:45,285 INFO L87 Difference]: Start difference. First operand 24 states and 24 transitions. Second operand 5 states. [2018-12-09 17:43:45,292 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-09 17:43:45,292 INFO L93 Difference]: Finished difference Result 25 states and 25 transitions. [2018-12-09 17:43:45,293 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-12-09 17:43:45,293 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 14 [2018-12-09 17:43:45,293 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-09 17:43:45,295 INFO L225 Difference]: With dead ends: 25 [2018-12-09 17:43:45,295 INFO L226 Difference]: Without dead ends: 25 [2018-12-09 17:43:45,295 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-12-09 17:43:45,295 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25 states. [2018-12-09 17:43:45,296 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25 to 18. [2018-12-09 17:43:45,296 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2018-12-09 17:43:45,297 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 18 transitions. [2018-12-09 17:43:45,297 INFO L78 Accepts]: Start accepts. Automaton has 18 states and 18 transitions. Word has length 14 [2018-12-09 17:43:45,297 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-09 17:43:45,297 INFO L480 AbstractCegarLoop]: Abstraction has 18 states and 18 transitions. [2018-12-09 17:43:45,297 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-12-09 17:43:45,297 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 18 transitions. [2018-12-09 17:43:45,298 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2018-12-09 17:43:45,298 INFO L394 BasicCegarLoop]: Found error trace [2018-12-09 17:43:45,298 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-09 17:43:45,298 INFO L423 AbstractCegarLoop]: === Iteration 4 === [mainErr0ENSURES_VIOLATIONMEMORY_LEAK, entry_pointErr0ASSERT_VIOLATIONMEMORY_FREE, entry_pointErr1ASSERT_VIOLATIONMEMORY_FREE]=== [2018-12-09 17:43:45,298 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-09 17:43:45,298 INFO L82 PathProgramCache]: Analyzing trace with hash 338425800, now seen corresponding path program 1 times [2018-12-09 17:43:45,298 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-12-09 17:43:45,299 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-09 17:43:45,300 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-09 17:43:45,300 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-09 17:43:45,300 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-12-09 17:43:45,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-09 17:43:45,376 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-09 17:43:45,376 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-12-09 17:43:45,376 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-12-09 17:43:45,376 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-12-09 17:43:45,376 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-12-09 17:43:45,376 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-12-09 17:43:45,377 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2018-12-09 17:43:45,377 INFO L87 Difference]: Start difference. First operand 18 states and 18 transitions. Second operand 6 states. [2018-12-09 17:43:45,424 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-09 17:43:45,424 INFO L93 Difference]: Finished difference Result 26 states and 25 transitions. [2018-12-09 17:43:45,424 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-12-09 17:43:45,424 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 17 [2018-12-09 17:43:45,425 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-09 17:43:45,425 INFO L225 Difference]: With dead ends: 26 [2018-12-09 17:43:45,425 INFO L226 Difference]: Without dead ends: 18 [2018-12-09 17:43:45,425 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 4 SyntacticMatches, 1 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2018-12-09 17:43:45,425 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18 states. [2018-12-09 17:43:45,426 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18 to 18. [2018-12-09 17:43:45,426 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2018-12-09 17:43:45,427 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 17 transitions. [2018-12-09 17:43:45,427 INFO L78 Accepts]: Start accepts. Automaton has 18 states and 17 transitions. Word has length 17 [2018-12-09 17:43:45,427 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-09 17:43:45,427 INFO L480 AbstractCegarLoop]: Abstraction has 18 states and 17 transitions. [2018-12-09 17:43:45,427 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-12-09 17:43:45,427 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 17 transitions. [2018-12-09 17:43:45,428 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2018-12-09 17:43:45,428 INFO L394 BasicCegarLoop]: Found error trace [2018-12-09 17:43:45,428 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-09 17:43:45,428 INFO L423 AbstractCegarLoop]: === Iteration 5 === [mainErr0ENSURES_VIOLATIONMEMORY_LEAK, entry_pointErr0ASSERT_VIOLATIONMEMORY_FREE, entry_pointErr1ASSERT_VIOLATIONMEMORY_FREE]=== [2018-12-09 17:43:45,428 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-09 17:43:45,428 INFO L82 PathProgramCache]: Analyzing trace with hash -1469028663, now seen corresponding path program 1 times [2018-12-09 17:43:45,428 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-12-09 17:43:45,429 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-09 17:43:45,429 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-09 17:43:45,430 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-09 17:43:45,430 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-12-09 17:43:45,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-09 17:43:45,516 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-09 17:43:45,516 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-12-09 17:43:45,516 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2018-12-09 17:43:45,516 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-12-09 17:43:45,516 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-12-09 17:43:45,517 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-12-09 17:43:45,517 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2018-12-09 17:43:45,517 INFO L87 Difference]: Start difference. First operand 18 states and 17 transitions. Second operand 9 states. [2018-12-09 17:43:45,580 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-09 17:43:45,580 INFO L93 Difference]: Finished difference Result 17 states and 16 transitions. [2018-12-09 17:43:45,580 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-12-09 17:43:45,581 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 17 [2018-12-09 17:43:45,581 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-09 17:43:45,581 INFO L225 Difference]: With dead ends: 17 [2018-12-09 17:43:45,581 INFO L226 Difference]: Without dead ends: 0 [2018-12-09 17:43:45,581 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=45, Invalid=87, Unknown=0, NotChecked=0, Total=132 [2018-12-09 17:43:45,581 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2018-12-09 17:43:45,581 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2018-12-09 17:43:45,582 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2018-12-09 17:43:45,582 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2018-12-09 17:43:45,582 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 17 [2018-12-09 17:43:45,582 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-09 17:43:45,582 INFO L480 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2018-12-09 17:43:45,582 INFO L481 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-12-09 17:43:45,582 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2018-12-09 17:43:45,582 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2018-12-09 17:43:45,585 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 09.12 05:43:45 BoogieIcfgContainer [2018-12-09 17:43:45,585 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-12-09 17:43:45,585 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2018-12-09 17:43:45,585 INFO L271 PluginConnector]: Initializing Witness Printer... [2018-12-09 17:43:45,586 INFO L276 PluginConnector]: Witness Printer initialized [2018-12-09 17:43:45,586 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.12 05:43:44" (3/4) ... [2018-12-09 17:43:45,588 INFO L144 WitnessPrinter]: Generating witness for correct program [2018-12-09 17:43:45,593 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure ldv_malloc [2018-12-09 17:43:45,593 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure ULTIMATE.init [2018-12-09 17:43:45,593 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure main [2018-12-09 17:43:45,593 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure entry_point [2018-12-09 17:43:45,595 INFO L905 BoogieBacktranslator]: Reduced CFG by removing 11 nodes and edges [2018-12-09 17:43:45,595 INFO L905 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2018-12-09 17:43:45,596 INFO L905 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2018-12-09 17:43:45,619 INFO L145 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/working_dir_16226813-55f3-4b39-8ad4-2557f5fb4e90/bin-2019/utaipan/witness.graphml [2018-12-09 17:43:45,620 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2018-12-09 17:43:45,620 INFO L168 Benchmark]: Toolchain (without parser) took 1168.58 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 142.1 MB). Free memory was 948.1 MB in the beginning and 992.7 MB in the end (delta: -44.6 MB). Peak memory consumption was 97.4 MB. Max. memory is 11.5 GB. [2018-12-09 17:43:45,621 INFO L168 Benchmark]: CDTParser took 0.13 ms. Allocated memory is still 1.0 GB. Free memory is still 976.0 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-12-09 17:43:45,621 INFO L168 Benchmark]: CACSL2BoogieTranslator took 326.38 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 142.1 MB). Free memory was 948.1 MB in the beginning and 1.1 GB in the end (delta: -168.0 MB). Peak memory consumption was 33.4 MB. Max. memory is 11.5 GB. [2018-12-09 17:43:45,621 INFO L168 Benchmark]: Boogie Procedure Inliner took 20.79 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. [2018-12-09 17:43:45,622 INFO L168 Benchmark]: Boogie Preprocessor took 12.87 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: 3.4 MB). Peak memory consumption was 3.4 MB. Max. memory is 11.5 GB. [2018-12-09 17:43:45,622 INFO L168 Benchmark]: RCFGBuilder took 134.16 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: 14.7 MB). Peak memory consumption was 14.7 MB. Max. memory is 11.5 GB. [2018-12-09 17:43:45,622 INFO L168 Benchmark]: TraceAbstraction took 637.73 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 996.1 MB in the end (delta: 101.9 MB). Peak memory consumption was 101.9 MB. Max. memory is 11.5 GB. [2018-12-09 17:43:45,622 INFO L168 Benchmark]: Witness Printer took 34.14 ms. Allocated memory is still 1.2 GB. Free memory was 996.1 MB in the beginning and 992.7 MB in the end (delta: 3.4 MB). Peak memory consumption was 3.4 MB. Max. memory is 11.5 GB. [2018-12-09 17:43:45,624 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 976.0 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 326.38 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 142.1 MB). Free memory was 948.1 MB in the beginning and 1.1 GB in the end (delta: -168.0 MB). Peak memory consumption was 33.4 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 20.79 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 12.87 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: 3.4 MB). Peak memory consumption was 3.4 MB. Max. memory is 11.5 GB. * RCFGBuilder took 134.16 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: 14.7 MB). Peak memory consumption was 14.7 MB. Max. memory is 11.5 GB. * TraceAbstraction took 637.73 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 996.1 MB in the end (delta: 101.9 MB). Peak memory consumption was 101.9 MB. Max. memory is 11.5 GB. * Witness Printer took 34.14 ms. Allocated memory is still 1.2 GB. Free memory was 996.1 MB in the beginning and 992.7 MB in the end (delta: 3.4 MB). Peak memory consumption was 3.4 MB. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 1438]: all allocated memory was freed For all program executions holds that all allocated memory was freed at this location - PositiveResult [Line: 1435]: free always succeeds For all program executions holds that free always succeeds at this location - PositiveResult [Line: 1435]: free always succeeds For all program executions holds that free always succeeds at this location - AllSpecificationsHoldResult: All specifications hold 3 specifications checked. All of them hold - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 23 locations, 3 error locations. SAFE Result, 0.6s OverallTime, 5 OverallIterations, 1 TraceHistogramMax, 0.1s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 86 SDtfs, 23 SDslu, 195 SDs, 0 SdLazy, 125 SolverSat, 19 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 35 GetRequests, 10 SyntacticMatches, 1 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=24occurred 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, 5 MinimizatonAttempts, 7 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.2s InterpolantComputationTime, 75 NumberOfCodeBlocks, 75 NumberOfCodeBlocksAsserted, 5 NumberOfCheckSat, 70 ConstructedInterpolants, 0 QuantifiedInterpolants, 5176 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 5 InterpolantComputations, 5 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...