./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/array-memsafety/add_last_unsafe_false-valid-deref.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_90d3f7c1-0644-41e7-b4a1-5fd480b6b67d/bin-2019/utaipan/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/working_dir_90d3f7c1-0644-41e7-b4a1-5fd480b6b67d/bin-2019/utaipan/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/working_dir_90d3f7c1-0644-41e7-b4a1-5fd480b6b67d/bin-2019/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/working_dir_90d3f7c1-0644-41e7-b4a1-5fd480b6b67d/bin-2019/utaipan/config/TaipanMemDerefMemtrack.xml -i ../../sv-benchmarks/c/array-memsafety/add_last_unsafe_false-valid-deref.i -s /tmp/vcloud-vcloud-master/worker/working_dir_90d3f7c1-0644-41e7-b4a1-5fd480b6b67d/bin-2019/utaipan/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/working_dir_90d3f7c1-0644-41e7-b4a1-5fd480b6b67d/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 c1a0811762ce5aa3a20e7bb16564653d668aecc4 ......................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE(valid-deref) --- Real Ultimate output --- This is Ultimate 0.1.23-635dfa2 [2018-12-03 07:15:34,910 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-12-03 07:15:34,911 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-12-03 07:15:34,919 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-12-03 07:15:34,919 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-12-03 07:15:34,919 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-12-03 07:15:34,920 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-12-03 07:15:34,921 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-12-03 07:15:34,922 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-12-03 07:15:34,923 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-12-03 07:15:34,923 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-12-03 07:15:34,924 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-12-03 07:15:34,924 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-12-03 07:15:34,925 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-12-03 07:15:34,925 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-12-03 07:15:34,926 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-12-03 07:15:34,927 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-12-03 07:15:34,928 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-12-03 07:15:34,929 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-12-03 07:15:34,930 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-12-03 07:15:34,931 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-12-03 07:15:34,932 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-12-03 07:15:34,934 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-12-03 07:15:34,934 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-12-03 07:15:34,934 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-12-03 07:15:34,935 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-12-03 07:15:34,935 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-12-03 07:15:34,936 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-12-03 07:15:34,936 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-12-03 07:15:34,937 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-12-03 07:15:34,937 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-12-03 07:15:34,938 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-12-03 07:15:34,938 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-12-03 07:15:34,938 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-12-03 07:15:34,939 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-12-03 07:15:34,939 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-12-03 07:15:34,939 INFO L98 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/working_dir_90d3f7c1-0644-41e7-b4a1-5fd480b6b67d/bin-2019/utaipan/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Default.epf [2018-12-03 07:15:34,950 INFO L110 SettingsManager]: Loading preferences was successful [2018-12-03 07:15:34,950 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-12-03 07:15:34,951 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-12-03 07:15:34,951 INFO L133 SettingsManager]: * ... calls to implemented procedures=ONLY_FOR_CONCURRENT_PROGRAMS [2018-12-03 07:15:34,951 INFO L133 SettingsManager]: * User list type=DISABLED [2018-12-03 07:15:34,951 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-12-03 07:15:34,951 INFO L133 SettingsManager]: * Explicit value domain=true [2018-12-03 07:15:34,951 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-12-03 07:15:34,951 INFO L133 SettingsManager]: * Octagon Domain=false [2018-12-03 07:15:34,951 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-12-03 07:15:34,951 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-12-03 07:15:34,951 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-12-03 07:15:34,952 INFO L133 SettingsManager]: * Interval Domain=false [2018-12-03 07:15:34,952 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-12-03 07:15:34,952 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-12-03 07:15:34,952 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-12-03 07:15:34,952 INFO L133 SettingsManager]: * sizeof long=4 [2018-12-03 07:15:34,953 INFO L133 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2018-12-03 07:15:34,953 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-12-03 07:15:34,953 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-12-03 07:15:34,953 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-12-03 07:15:34,953 INFO L133 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2018-12-03 07:15:34,953 INFO L133 SettingsManager]: * Bitprecise bitfields=true [2018-12-03 07:15:34,953 INFO L133 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2018-12-03 07:15:34,953 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-12-03 07:15:34,953 INFO L133 SettingsManager]: * sizeof long double=12 [2018-12-03 07:15:34,954 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-12-03 07:15:34,954 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-12-03 07:15:34,954 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-12-03 07:15:34,954 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-12-03 07:15:34,954 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-12-03 07:15:34,954 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-12-03 07:15:34,954 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-12-03 07:15:34,954 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-12-03 07:15:34,954 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-12-03 07:15:34,954 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-12-03 07:15:34,954 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_90d3f7c1-0644-41e7-b4a1-5fd480b6b67d/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 -> c1a0811762ce5aa3a20e7bb16564653d668aecc4 [2018-12-03 07:15:34,977 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-12-03 07:15:34,986 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-12-03 07:15:34,988 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-12-03 07:15:34,990 INFO L271 PluginConnector]: Initializing CDTParser... [2018-12-03 07:15:34,990 INFO L276 PluginConnector]: CDTParser initialized [2018-12-03 07:15:34,990 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/working_dir_90d3f7c1-0644-41e7-b4a1-5fd480b6b67d/bin-2019/utaipan/../../sv-benchmarks/c/array-memsafety/add_last_unsafe_false-valid-deref.i [2018-12-03 07:15:35,031 INFO L221 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_90d3f7c1-0644-41e7-b4a1-5fd480b6b67d/bin-2019/utaipan/data/22d5330e3/a9553f480ffc4603928f3b2b95d0864a/FLAGa6e9f0425 [2018-12-03 07:15:35,488 INFO L307 CDTParser]: Found 1 translation units. [2018-12-03 07:15:35,489 INFO L161 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/working_dir_90d3f7c1-0644-41e7-b4a1-5fd480b6b67d/sv-benchmarks/c/array-memsafety/add_last_unsafe_false-valid-deref.i [2018-12-03 07:15:35,495 INFO L355 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_90d3f7c1-0644-41e7-b4a1-5fd480b6b67d/bin-2019/utaipan/data/22d5330e3/a9553f480ffc4603928f3b2b95d0864a/FLAGa6e9f0425 [2018-12-03 07:15:35,503 INFO L363 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/working_dir_90d3f7c1-0644-41e7-b4a1-5fd480b6b67d/bin-2019/utaipan/data/22d5330e3/a9553f480ffc4603928f3b2b95d0864a [2018-12-03 07:15:35,505 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-12-03 07:15:35,506 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2018-12-03 07:15:35,506 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-12-03 07:15:35,507 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-12-03 07:15:35,508 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-12-03 07:15:35,509 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.12 07:15:35" (1/1) ... [2018-12-03 07:15:35,510 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@14e9f722 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.12 07:15:35, skipping insertion in model container [2018-12-03 07:15:35,511 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.12 07:15:35" (1/1) ... [2018-12-03 07:15:35,515 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-12-03 07:15:35,532 INFO L176 MainTranslator]: Built tables and reachable declarations [2018-12-03 07:15:35,673 INFO L203 PostProcessor]: Analyzing one entry point: main [2018-12-03 07:15:35,679 INFO L191 MainTranslator]: Completed pre-run [2018-12-03 07:15:35,741 INFO L203 PostProcessor]: Analyzing one entry point: main [2018-12-03 07:15:35,768 INFO L195 MainTranslator]: Completed translation [2018-12-03 07:15:35,768 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.12 07:15:35 WrapperNode [2018-12-03 07:15:35,768 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-12-03 07:15:35,769 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-12-03 07:15:35,769 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-12-03 07:15:35,769 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-12-03 07:15:35,776 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.12 07:15:35" (1/1) ... [2018-12-03 07:15:35,784 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.12 07:15:35" (1/1) ... [2018-12-03 07:15:35,789 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-12-03 07:15:35,789 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-12-03 07:15:35,789 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-12-03 07:15:35,789 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-12-03 07:15:35,794 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.12 07:15:35" (1/1) ... [2018-12-03 07:15:35,794 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.12 07:15:35" (1/1) ... [2018-12-03 07:15:35,795 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.12 07:15:35" (1/1) ... [2018-12-03 07:15:35,795 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.12 07:15:35" (1/1) ... [2018-12-03 07:15:35,799 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.12 07:15:35" (1/1) ... [2018-12-03 07:15:35,801 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.12 07:15:35" (1/1) ... [2018-12-03 07:15:35,802 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.12 07:15:35" (1/1) ... [2018-12-03 07:15:35,803 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-12-03 07:15:35,803 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-12-03 07:15:35,804 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-12-03 07:15:35,804 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-12-03 07:15:35,804 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.12 07:15:35" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_90d3f7c1-0644-41e7-b4a1-5fd480b6b67d/bin-2019/utaipan/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-12-03 07:15:35,833 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.alloc [2018-12-03 07:15:35,834 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2018-12-03 07:15:35,834 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2018-12-03 07:15:35,834 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-12-03 07:15:35,834 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-12-03 07:15:35,834 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-12-03 07:15:35,834 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-12-03 07:15:35,834 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2018-12-03 07:15:35,834 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-12-03 07:15:35,834 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-12-03 07:15:35,954 INFO L275 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-12-03 07:15:35,954 INFO L280 CfgBuilder]: Removed 1 assue(true) statements. [2018-12-03 07:15:35,955 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.12 07:15:35 BoogieIcfgContainer [2018-12-03 07:15:35,955 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-12-03 07:15:35,955 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-12-03 07:15:35,955 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-12-03 07:15:35,957 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-12-03 07:15:35,957 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 03.12 07:15:35" (1/3) ... [2018-12-03 07:15:35,957 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7b36e51b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.12 07:15:35, skipping insertion in model container [2018-12-03 07:15:35,957 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.12 07:15:35" (2/3) ... [2018-12-03 07:15:35,958 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7b36e51b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.12 07:15:35, skipping insertion in model container [2018-12-03 07:15:35,958 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.12 07:15:35" (3/3) ... [2018-12-03 07:15:35,959 INFO L112 eAbstractionObserver]: Analyzing ICFG add_last_unsafe_false-valid-deref.i [2018-12-03 07:15:35,964 INFO L156 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-12-03 07:15:35,968 INFO L168 ceAbstractionStarter]: Appying trace abstraction to program that has 11 error locations. [2018-12-03 07:15:35,977 INFO L257 AbstractCegarLoop]: Starting to check reachability of 11 error locations. [2018-12-03 07:15:35,991 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-12-03 07:15:35,991 INFO L383 AbstractCegarLoop]: Hoare is false [2018-12-03 07:15:35,991 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-12-03 07:15:35,991 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-12-03 07:15:35,991 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-12-03 07:15:35,991 INFO L387 AbstractCegarLoop]: Difference is false [2018-12-03 07:15:35,991 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-12-03 07:15:35,991 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-12-03 07:15:35,999 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states. [2018-12-03 07:15:36,005 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2018-12-03 07:15:36,005 INFO L394 BasicCegarLoop]: Found error trace [2018-12-03 07:15:36,005 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-03 07:15:36,006 INFO L423 AbstractCegarLoop]: === Iteration 1 === [mainErr3REQUIRES_VIOLATION, mainErr9REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr8REQUIRES_VIOLATION, mainErr6REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr10ENSURES_VIOLATIONMEMORY_LEAK]=== [2018-12-03 07:15:36,010 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-03 07:15:36,010 INFO L82 PathProgramCache]: Analyzing trace with hash 1077478270, now seen corresponding path program 1 times [2018-12-03 07:15:36,012 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-12-03 07:15:36,039 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-03 07:15:36,039 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-03 07:15:36,040 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-03 07:15:36,040 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-12-03 07:15:36,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-03 07:15:36,104 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-03 07:15:36,105 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-12-03 07:15:36,106 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-12-03 07:15:36,106 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-12-03 07:15:36,108 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-12-03 07:15:36,116 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-12-03 07:15:36,116 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-12-03 07:15:36,117 INFO L87 Difference]: Start difference. First operand 32 states. Second operand 4 states. [2018-12-03 07:15:36,177 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-03 07:15:36,177 INFO L93 Difference]: Finished difference Result 27 states and 29 transitions. [2018-12-03 07:15:36,178 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-12-03 07:15:36,179 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 10 [2018-12-03 07:15:36,179 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-03 07:15:36,186 INFO L225 Difference]: With dead ends: 27 [2018-12-03 07:15:36,187 INFO L226 Difference]: Without dead ends: 24 [2018-12-03 07:15:36,188 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2018-12-03 07:15:36,199 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24 states. [2018-12-03 07:15:36,207 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24 to 24. [2018-12-03 07:15:36,208 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2018-12-03 07:15:36,208 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 26 transitions. [2018-12-03 07:15:36,209 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 26 transitions. Word has length 10 [2018-12-03 07:15:36,209 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-03 07:15:36,209 INFO L480 AbstractCegarLoop]: Abstraction has 24 states and 26 transitions. [2018-12-03 07:15:36,209 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-12-03 07:15:36,209 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 26 transitions. [2018-12-03 07:15:36,210 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2018-12-03 07:15:36,210 INFO L394 BasicCegarLoop]: Found error trace [2018-12-03 07:15:36,210 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-03 07:15:36,210 INFO L423 AbstractCegarLoop]: === Iteration 2 === [mainErr3REQUIRES_VIOLATION, mainErr9REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr8REQUIRES_VIOLATION, mainErr6REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr10ENSURES_VIOLATIONMEMORY_LEAK]=== [2018-12-03 07:15:36,210 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-03 07:15:36,210 INFO L82 PathProgramCache]: Analyzing trace with hash 1077478271, now seen corresponding path program 1 times [2018-12-03 07:15:36,211 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-12-03 07:15:36,211 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-03 07:15:36,212 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-03 07:15:36,212 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-03 07:15:36,212 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-12-03 07:15:36,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-12-03 07:15:36,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-12-03 07:15:36,248 INFO L469 BasicCegarLoop]: Counterexample might be feasible [2018-12-03 07:15:36,261 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 03.12 07:15:36 BoogieIcfgContainer [2018-12-03 07:15:36,262 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-12-03 07:15:36,262 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2018-12-03 07:15:36,262 INFO L271 PluginConnector]: Initializing Witness Printer... [2018-12-03 07:15:36,262 INFO L276 PluginConnector]: Witness Printer initialized [2018-12-03 07:15:36,262 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.12 07:15:35" (3/4) ... [2018-12-03 07:15:36,264 INFO L138 WitnessPrinter]: Generating witness for reachability counterexample [2018-12-03 07:15:36,286 INFO L145 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/working_dir_90d3f7c1-0644-41e7-b4a1-5fd480b6b67d/bin-2019/utaipan/witness.graphml [2018-12-03 07:15:36,286 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2018-12-03 07:15:36,287 INFO L168 Benchmark]: Toolchain (without parser) took 781.23 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 119.0 MB). Free memory was 950.9 MB in the beginning and 1.0 GB in the end (delta: -97.9 MB). Peak memory consumption was 21.1 MB. Max. memory is 11.5 GB. [2018-12-03 07:15:36,288 INFO L168 Benchmark]: CDTParser took 0.19 ms. Allocated memory is still 1.0 GB. Free memory is still 978.8 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-12-03 07:15:36,288 INFO L168 Benchmark]: CACSL2BoogieTranslator took 262.23 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 119.0 MB). Free memory was 950.9 MB in the beginning and 1.1 GB in the end (delta: -155.3 MB). Peak memory consumption was 24.6 MB. Max. memory is 11.5 GB. [2018-12-03 07:15:36,288 INFO L168 Benchmark]: Boogie Procedure Inliner took 19.63 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 3.5 MB). Peak memory consumption was 3.5 MB. Max. memory is 11.5 GB. [2018-12-03 07:15:36,289 INFO L168 Benchmark]: Boogie Preprocessor took 14.52 ms. Allocated memory is still 1.1 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. [2018-12-03 07:15:36,289 INFO L168 Benchmark]: RCFGBuilder took 151.25 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 18.7 MB). Peak memory consumption was 18.7 MB. Max. memory is 11.5 GB. [2018-12-03 07:15:36,289 INFO L168 Benchmark]: TraceAbstraction took 306.52 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.0 GB in the end (delta: 35.1 MB). Peak memory consumption was 35.1 MB. Max. memory is 11.5 GB. [2018-12-03 07:15:36,289 INFO L168 Benchmark]: Witness Printer took 24.52 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. [2018-12-03 07:15:36,291 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.19 ms. Allocated memory is still 1.0 GB. Free memory is still 978.8 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 262.23 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 119.0 MB). Free memory was 950.9 MB in the beginning and 1.1 GB in the end (delta: -155.3 MB). Peak memory consumption was 24.6 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 19.63 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 3.5 MB). Peak memory consumption was 3.5 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 14.52 ms. Allocated memory is still 1.1 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. * RCFGBuilder took 151.25 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 18.7 MB). Peak memory consumption was 18.7 MB. Max. memory is 11.5 GB. * TraceAbstraction took 306.52 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.0 GB in the end (delta: 35.1 MB). Peak memory consumption was 35.1 MB. Max. memory is 11.5 GB. * Witness Printer took 24.52 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. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 547]: pointer dereference may fail pointer dereference may fail We found a FailurePath: [L541] int i, j; [L542] int length = __VERIFIER_nondet_int(); [L543] COND TRUE length < 1 [L543] length = 1 VAL [length=1] [L544] int *arr = __builtin_alloca (length); VAL [__builtin_alloca (length)={3:0}, arr={3:0}, length=1] [L545] COND FALSE !(!arr) [L546] int *a = arr; VAL [__builtin_alloca (length)={3:0}, a={3:0}, arr={3:0}, length=1] [L547] \read(*a) - StatisticsResult: Ultimate Automizer benchmark data CFG has 3 procedures, 32 locations, 11 error locations. UNSAFE Result, 0.2s OverallTime, 2 OverallIterations, 1 TraceHistogramMax, 0.0s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 15 SDtfs, 25 SDslu, 18 SDs, 0 SdLazy, 25 SolverSat, 6 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=32occurred in iteration=0, 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, 1 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 20 NumberOfCodeBlocks, 20 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 9 ConstructedInterpolants, 0 QuantifiedInterpolants, 153 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 1 InterpolantComputations, 1 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! Received shutdown request...