./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/memsafety-ext3/scopes2.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version a4ecdabc Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/run_dir_b66a81e3-f343-439d-a6e5-f67fbf4da4ea/bin/utaipan/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_b66a81e3-f343-439d-a6e5-f67fbf4da4ea/bin/utaipan/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_b66a81e3-f343-439d-a6e5-f67fbf4da4ea/bin/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_b66a81e3-f343-439d-a6e5-f67fbf4da4ea/bin/utaipan/config/TaipanMemDerefMemtrack.xml -i ../../sv-benchmarks/c/memsafety-ext3/scopes2.c -s /tmp/vcloud-vcloud-master/worker/run_dir_b66a81e3-f343-439d-a6e5-f67fbf4da4ea/bin/utaipan/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_b66a81e3-f343-439d-a6e5-f67fbf4da4ea/bin/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 a06ac35b6270d716926f4cab09091bb160bdd736 ................................................................................................................................................................................................................................................... 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 0.2.0-a4ecdab [2020-11-22 13:03:39,937 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-22 13:03:39,940 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-22 13:03:40,023 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-11-22 13:03:40,023 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-11-22 13:03:40,024 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-11-22 13:03:40,027 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-11-22 13:03:40,035 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-11-22 13:03:40,037 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-11-22 13:03:40,038 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-11-22 13:03:40,039 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-11-22 13:03:40,041 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-11-22 13:03:40,041 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-22 13:03:40,043 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-22 13:03:40,044 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-22 13:03:40,050 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-22 13:03:40,051 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-22 13:03:40,063 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-22 13:03:40,065 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-22 13:03:40,067 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-22 13:03:40,069 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-22 13:03:40,075 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-22 13:03:40,078 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-22 13:03:40,079 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-22 13:03:40,088 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-11-22 13:03:40,088 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-11-22 13:03:40,088 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-11-22 13:03:40,090 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-11-22 13:03:40,091 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-11-22 13:03:40,092 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-11-22 13:03:40,092 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-11-22 13:03:40,094 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-11-22 13:03:40,096 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-11-22 13:03:40,097 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-11-22 13:03:40,098 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-11-22 13:03:40,098 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-11-22 13:03:40,099 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-11-22 13:03:40,099 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-11-22 13:03:40,099 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-22 13:03:40,100 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-22 13:03:40,101 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-22 13:03:40,104 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_b66a81e3-f343-439d-a6e5-f67fbf4da4ea/bin/utaipan/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Default.epf [2020-11-22 13:03:40,145 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-22 13:03:40,145 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-22 13:03:40,149 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2020-11-22 13:03:40,149 INFO L138 SettingsManager]: * User list type=DISABLED [2020-11-22 13:03:40,149 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2020-11-22 13:03:40,150 INFO L138 SettingsManager]: * Explicit value domain=true [2020-11-22 13:03:40,150 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2020-11-22 13:03:40,150 INFO L138 SettingsManager]: * Octagon Domain=false [2020-11-22 13:03:40,150 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2020-11-22 13:03:40,150 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2020-11-22 13:03:40,151 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2020-11-22 13:03:40,152 INFO L138 SettingsManager]: * Interval Domain=false [2020-11-22 13:03:40,152 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2020-11-22 13:03:40,152 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2020-11-22 13:03:40,152 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2020-11-22 13:03:40,153 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-11-22 13:03:40,153 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-11-22 13:03:40,153 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-22 13:03:40,153 INFO L138 SettingsManager]: * sizeof long=4 [2020-11-22 13:03:40,154 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2020-11-22 13:03:40,154 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-11-22 13:03:40,154 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-11-22 13:03:40,154 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-22 13:03:40,155 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2020-11-22 13:03:40,155 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2020-11-22 13:03:40,155 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2020-11-22 13:03:40,156 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-11-22 13:03:40,157 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2020-11-22 13:03:40,157 INFO L138 SettingsManager]: * sizeof long double=12 [2020-11-22 13:03:40,157 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-22 13:03:40,157 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-22 13:03:40,157 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-11-22 13:03:40,158 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-11-22 13:03:40,158 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-22 13:03:40,158 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-22 13:03:40,158 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-11-22 13:03:40,158 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2020-11-22 13:03:40,159 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-11-22 13:03:40,159 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-11-22 13:03:40,159 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-11-22 13:03:40,162 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud-vcloud-master/worker/run_dir_b66a81e3-f343-439d-a6e5-f67fbf4da4ea/bin/utaipan/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_b66a81e3-f343-439d-a6e5-f67fbf4da4ea/bin/utaipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> a06ac35b6270d716926f4cab09091bb160bdd736 [2020-11-22 13:03:40,459 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-22 13:03:40,502 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-22 13:03:40,505 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-22 13:03:40,506 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-22 13:03:40,509 INFO L275 PluginConnector]: CDTParser initialized [2020-11-22 13:03:40,515 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_b66a81e3-f343-439d-a6e5-f67fbf4da4ea/bin/utaipan/../../sv-benchmarks/c/memsafety-ext3/scopes2.c [2020-11-22 13:03:40,596 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_b66a81e3-f343-439d-a6e5-f67fbf4da4ea/bin/utaipan/data/0c53520de/e66f50ee6bf341dd92ea787259fb5324/FLAG6f0b62389 [2020-11-22 13:03:41,023 INFO L306 CDTParser]: Found 1 translation units. [2020-11-22 13:03:41,024 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_b66a81e3-f343-439d-a6e5-f67fbf4da4ea/sv-benchmarks/c/memsafety-ext3/scopes2.c [2020-11-22 13:03:41,043 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_b66a81e3-f343-439d-a6e5-f67fbf4da4ea/bin/utaipan/data/0c53520de/e66f50ee6bf341dd92ea787259fb5324/FLAG6f0b62389 [2020-11-22 13:03:41,411 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_b66a81e3-f343-439d-a6e5-f67fbf4da4ea/bin/utaipan/data/0c53520de/e66f50ee6bf341dd92ea787259fb5324 [2020-11-22 13:03:41,413 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-22 13:03:41,414 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-11-22 13:03:41,416 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-22 13:03:41,417 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-22 13:03:41,420 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-22 13:03:41,421 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 01:03:41" (1/1) ... [2020-11-22 13:03:41,423 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@664c8472 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:03:41, skipping insertion in model container [2020-11-22 13:03:41,423 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 01:03:41" (1/1) ... [2020-11-22 13:03:41,430 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-22 13:03:41,442 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-22 13:03:41,595 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-22 13:03:41,610 INFO L203 MainTranslator]: Completed pre-run [2020-11-22 13:03:41,644 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-22 13:03:41,664 INFO L208 MainTranslator]: Completed translation [2020-11-22 13:03:41,665 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:03:41 WrapperNode [2020-11-22 13:03:41,665 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-22 13:03:41,666 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-11-22 13:03:41,666 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-11-22 13:03:41,666 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-11-22 13:03:41,674 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:03:41" (1/1) ... [2020-11-22 13:03:41,684 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:03:41" (1/1) ... [2020-11-22 13:03:41,707 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-11-22 13:03:41,709 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-22 13:03:41,709 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-22 13:03:41,710 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-22 13:03:41,724 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:03:41" (1/1) ... [2020-11-22 13:03:41,725 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:03:41" (1/1) ... [2020-11-22 13:03:41,739 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:03:41" (1/1) ... [2020-11-22 13:03:41,740 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:03:41" (1/1) ... [2020-11-22 13:03:41,743 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:03:41" (1/1) ... [2020-11-22 13:03:41,745 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:03:41" (1/1) ... [2020-11-22 13:03:41,748 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:03:41" (1/1) ... [2020-11-22 13:03:41,750 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-22 13:03:41,750 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-22 13:03:41,751 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-22 13:03:41,751 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-22 13:03:41,753 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:03:41" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_b66a81e3-f343-439d-a6e5-f67fbf4da4ea/bin/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 [2020-11-22 13:03:41,827 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-22 13:03:41,827 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-22 13:03:41,828 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-11-22 13:03:41,828 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-11-22 13:03:41,828 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-11-22 13:03:41,828 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-11-22 13:03:42,273 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-22 13:03:42,273 INFO L298 CfgBuilder]: Removed 4 assume(true) statements. [2020-11-22 13:03:42,275 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 01:03:42 BoogieIcfgContainer [2020-11-22 13:03:42,275 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-22 13:03:42,277 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-11-22 13:03:42,277 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-11-22 13:03:42,280 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-11-22 13:03:42,280 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.11 01:03:41" (1/3) ... [2020-11-22 13:03:42,281 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6408a988 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.11 01:03:42, skipping insertion in model container [2020-11-22 13:03:42,281 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:03:41" (2/3) ... [2020-11-22 13:03:42,282 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6408a988 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.11 01:03:42, skipping insertion in model container [2020-11-22 13:03:42,282 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 01:03:42" (3/3) ... [2020-11-22 13:03:42,283 INFO L111 eAbstractionObserver]: Analyzing ICFG scopes2.c [2020-11-22 13:03:42,293 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-11-22 13:03:42,298 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 5 error locations. [2020-11-22 13:03:42,313 INFO L253 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2020-11-22 13:03:42,332 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-11-22 13:03:42,332 INFO L378 AbstractCegarLoop]: Hoare is false [2020-11-22 13:03:42,333 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-11-22 13:03:42,333 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-11-22 13:03:42,333 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-22 13:03:42,333 INFO L382 AbstractCegarLoop]: Difference is false [2020-11-22 13:03:42,333 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-22 13:03:42,333 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-11-22 13:03:42,346 INFO L276 IsEmpty]: Start isEmpty. Operand 10 states. [2020-11-22 13:03:42,358 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 3 [2020-11-22 13:03:42,358 INFO L414 BasicCegarLoop]: Found error trace [2020-11-22 13:03:42,359 INFO L422 BasicCegarLoop]: trace histogram [1, 1] [2020-11-22 13:03:42,360 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr2REQUIRES_VIOLATION]=== [2020-11-22 13:03:42,367 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-22 13:03:42,367 INFO L82 PathProgramCache]: Analyzing trace with hash 1778, now seen corresponding path program 1 times [2020-11-22 13:03:42,377 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-22 13:03:42,377 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2070775274] [2020-11-22 13:03:42,378 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-22 13:03:42,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-22 13:03:42,528 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-22 13:03:42,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-22 13:03:42,573 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-22 13:03:42,598 INFO L173 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2020-11-22 13:03:42,599 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-11-22 13:03:42,599 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-11-22 13:03:42,623 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.11 01:03:42 BoogieIcfgContainer [2020-11-22 13:03:42,623 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-11-22 13:03:42,626 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-11-22 13:03:42,627 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-11-22 13:03:42,627 INFO L275 PluginConnector]: Witness Printer initialized [2020-11-22 13:03:42,627 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 01:03:42" (3/4) ... [2020-11-22 13:03:42,629 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2020-11-22 13:03:42,678 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_b66a81e3-f343-439d-a6e5-f67fbf4da4ea/bin/utaipan/witness.graphml [2020-11-22 13:03:42,678 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-11-22 13:03:42,706 INFO L168 Benchmark]: Toolchain (without parser) took 1264.57 ms. Allocated memory is still 94.4 MB. Free memory was 60.0 MB in the beginning and 72.1 MB in the end (delta: -12.1 MB). Peak memory consumption was 26.4 MB. Max. memory is 16.1 GB. [2020-11-22 13:03:42,707 INFO L168 Benchmark]: CDTParser took 0.21 ms. Allocated memory is still 94.4 MB. Free memory is still 75.8 MB. There was no memory consumed. Max. memory is 16.1 GB. [2020-11-22 13:03:42,709 INFO L168 Benchmark]: CACSL2BoogieTranslator took 248.96 ms. Allocated memory is still 94.4 MB. Free memory was 59.8 MB in the beginning and 71.9 MB in the end (delta: -12.1 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2020-11-22 13:03:42,710 INFO L168 Benchmark]: Boogie Procedure Inliner took 41.71 ms. Allocated memory is still 94.4 MB. Free memory was 71.9 MB in the beginning and 70.4 MB in the end (delta: 1.5 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-22 13:03:42,712 INFO L168 Benchmark]: Boogie Preprocessor took 40.70 ms. Allocated memory is still 94.4 MB. Free memory was 70.4 MB in the beginning and 69.5 MB in the end (delta: 936.4 kB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-22 13:03:42,713 INFO L168 Benchmark]: RCFGBuilder took 524.67 ms. Allocated memory is still 94.4 MB. Free memory was 69.5 MB in the beginning and 50.6 MB in the end (delta: 18.9 MB). Peak memory consumption was 18.9 MB. Max. memory is 16.1 GB. [2020-11-22 13:03:42,714 INFO L168 Benchmark]: TraceAbstraction took 346.78 ms. Allocated memory is still 94.4 MB. Free memory was 50.3 MB in the beginning and 37.7 MB in the end (delta: 12.6 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. [2020-11-22 13:03:42,714 INFO L168 Benchmark]: Witness Printer took 51.77 ms. Allocated memory is still 94.4 MB. Free memory was 37.7 MB in the beginning and 72.1 MB in the end (delta: -34.4 MB). Peak memory consumption was 6.0 MB. Max. memory is 16.1 GB. [2020-11-22 13:03:42,726 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.21 ms. Allocated memory is still 94.4 MB. Free memory is still 75.8 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 248.96 ms. Allocated memory is still 94.4 MB. Free memory was 59.8 MB in the beginning and 71.9 MB in the end (delta: -12.1 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 41.71 ms. Allocated memory is still 94.4 MB. Free memory was 71.9 MB in the beginning and 70.4 MB in the end (delta: 1.5 MB). There was no memory consumed. Max. memory is 16.1 GB. * Boogie Preprocessor took 40.70 ms. Allocated memory is still 94.4 MB. Free memory was 70.4 MB in the beginning and 69.5 MB in the end (delta: 936.4 kB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 524.67 ms. Allocated memory is still 94.4 MB. Free memory was 69.5 MB in the beginning and 50.6 MB in the end (delta: 18.9 MB). Peak memory consumption was 18.9 MB. Max. memory is 16.1 GB. * TraceAbstraction took 346.78 ms. Allocated memory is still 94.4 MB. Free memory was 50.3 MB in the beginning and 37.7 MB in the end (delta: 12.6 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. * Witness Printer took 51.77 ms. Allocated memory is still 94.4 MB. Free memory was 37.7 MB in the beginning and 72.1 MB in the end (delta: -34.4 MB). Peak memory consumption was 6.0 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 18]: pointer dereference may fail pointer dereference may fail We found a FailurePath: [L5] int *myPointerA = ((void*) 0); [L6] int *myPointerB = ((void*) 0); [L8] COND FALSE !(__VERIFIER_nondet_int()) [L15] int myNumberB = 3; [L16] myPointerB = &myNumberB [L18] \read(*myPointerA) - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 10 locations, 5 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 0.2s, OverallIterations: 1, TraceHistogramMax: 1, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: No data available, PredicateUnifierStatistics: No data available, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=10occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 2 NumberOfCodeBlocks, 2 NumberOfCodeBlocksAsserted, 1 NumberOfCheckSat, 0 ConstructedInterpolants, 0 QuantifiedInterpolants, 0 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 0 InterpolantComputations, 0 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! Received shutdown request...