./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_a1a03826-5df5-4d4e-967b-5d492367931c/bin/utaipan/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_a1a03826-5df5-4d4e-967b-5d492367931c/bin/utaipan/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_a1a03826-5df5-4d4e-967b-5d492367931c/bin/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_a1a03826-5df5-4d4e-967b-5d492367931c/bin/utaipan/config/TaipanMemDerefMemtrack.xml -i ../../sv-benchmarks/c/memsafety-ext3/scopes2.c -s /tmp/vcloud-vcloud-master/worker/run_dir_a1a03826-5df5-4d4e-967b-5d492367931c/bin/utaipan/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_a1a03826-5df5-4d4e-967b-5d492367931c/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 [2020-11-28 07:42:27,761 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-28 07:42:27,764 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-28 07:42:27,822 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-11-28 07:42:27,823 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-11-28 07:42:27,828 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-11-28 07:42:27,830 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-11-28 07:42:27,841 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-11-28 07:42:27,844 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-11-28 07:42:27,849 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-11-28 07:42:27,851 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-11-28 07:42:27,853 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-11-28 07:42:27,853 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-28 07:42:27,856 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-28 07:42:27,858 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-28 07:42:27,860 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-28 07:42:27,861 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-28 07:42:27,865 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-28 07:42:27,868 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-28 07:42:27,875 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-28 07:42:27,877 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-28 07:42:27,878 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-28 07:42:27,880 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-28 07:42:27,881 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-28 07:42:27,890 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-11-28 07:42:27,891 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-11-28 07:42:27,891 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-11-28 07:42:27,893 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-11-28 07:42:27,894 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-11-28 07:42:27,895 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-11-28 07:42:27,895 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-11-28 07:42:27,896 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-11-28 07:42:27,898 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-11-28 07:42:27,900 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-11-28 07:42:27,901 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-11-28 07:42:27,901 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-11-28 07:42:27,902 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-11-28 07:42:27,902 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-11-28 07:42:27,902 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-28 07:42:27,903 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-28 07:42:27,904 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-28 07:42:27,905 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_a1a03826-5df5-4d4e-967b-5d492367931c/bin/utaipan/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Default.epf [2020-11-28 07:42:27,946 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-28 07:42:27,946 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-28 07:42:27,948 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2020-11-28 07:42:27,948 INFO L138 SettingsManager]: * User list type=DISABLED [2020-11-28 07:42:27,948 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2020-11-28 07:42:27,948 INFO L138 SettingsManager]: * Explicit value domain=true [2020-11-28 07:42:27,948 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2020-11-28 07:42:27,949 INFO L138 SettingsManager]: * Octagon Domain=false [2020-11-28 07:42:27,949 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2020-11-28 07:42:27,949 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2020-11-28 07:42:27,950 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2020-11-28 07:42:27,950 INFO L138 SettingsManager]: * Interval Domain=false [2020-11-28 07:42:27,951 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2020-11-28 07:42:27,951 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2020-11-28 07:42:27,951 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2020-11-28 07:42:27,952 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-11-28 07:42:27,952 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-11-28 07:42:27,952 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-28 07:42:27,952 INFO L138 SettingsManager]: * sizeof long=4 [2020-11-28 07:42:27,952 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2020-11-28 07:42:27,953 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-11-28 07:42:27,953 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-11-28 07:42:27,953 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-28 07:42:27,953 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2020-11-28 07:42:27,953 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2020-11-28 07:42:27,954 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2020-11-28 07:42:27,955 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-11-28 07:42:27,955 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2020-11-28 07:42:27,955 INFO L138 SettingsManager]: * sizeof long double=12 [2020-11-28 07:42:27,956 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-28 07:42:27,956 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-28 07:42:27,956 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-11-28 07:42:27,956 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-11-28 07:42:27,957 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-28 07:42:27,957 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-28 07:42:27,957 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-11-28 07:42:27,957 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2020-11-28 07:42:27,957 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-11-28 07:42:27,958 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-11-28 07:42:27,958 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-11-28 07:42:27,958 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_a1a03826-5df5-4d4e-967b-5d492367931c/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_a1a03826-5df5-4d4e-967b-5d492367931c/bin/utaipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> a06ac35b6270d716926f4cab09091bb160bdd736 [2020-11-28 07:42:28,281 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-28 07:42:28,303 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-28 07:42:28,306 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-28 07:42:28,307 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-28 07:42:28,311 INFO L275 PluginConnector]: CDTParser initialized [2020-11-28 07:42:28,313 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_a1a03826-5df5-4d4e-967b-5d492367931c/bin/utaipan/../../sv-benchmarks/c/memsafety-ext3/scopes2.c [2020-11-28 07:42:28,378 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_a1a03826-5df5-4d4e-967b-5d492367931c/bin/utaipan/data/e0eca30b0/709cf31aa35c4617abc9bd379d83d51d/FLAG4c5e0fcb5 [2020-11-28 07:42:28,919 INFO L306 CDTParser]: Found 1 translation units. [2020-11-28 07:42:28,919 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_a1a03826-5df5-4d4e-967b-5d492367931c/sv-benchmarks/c/memsafety-ext3/scopes2.c [2020-11-28 07:42:28,932 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_a1a03826-5df5-4d4e-967b-5d492367931c/bin/utaipan/data/e0eca30b0/709cf31aa35c4617abc9bd379d83d51d/FLAG4c5e0fcb5 [2020-11-28 07:42:29,279 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_a1a03826-5df5-4d4e-967b-5d492367931c/bin/utaipan/data/e0eca30b0/709cf31aa35c4617abc9bd379d83d51d [2020-11-28 07:42:29,281 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-28 07:42:29,283 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-11-28 07:42:29,285 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-28 07:42:29,285 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-28 07:42:29,288 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-28 07:42:29,289 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 07:42:29" (1/1) ... [2020-11-28 07:42:29,291 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4beb2ea4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:42:29, skipping insertion in model container [2020-11-28 07:42:29,292 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 07:42:29" (1/1) ... [2020-11-28 07:42:29,300 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-28 07:42:29,312 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-28 07:42:29,550 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-28 07:42:29,566 INFO L203 MainTranslator]: Completed pre-run [2020-11-28 07:42:29,587 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-28 07:42:29,607 INFO L208 MainTranslator]: Completed translation [2020-11-28 07:42:29,609 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:42:29 WrapperNode [2020-11-28 07:42:29,609 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-28 07:42:29,611 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-11-28 07:42:29,611 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-11-28 07:42:29,611 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-11-28 07:42:29,620 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:42:29" (1/1) ... [2020-11-28 07:42:29,628 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:42:29" (1/1) ... [2020-11-28 07:42:29,648 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-11-28 07:42:29,649 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-28 07:42:29,649 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-28 07:42:29,650 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-28 07:42:29,658 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:42:29" (1/1) ... [2020-11-28 07:42:29,658 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:42:29" (1/1) ... [2020-11-28 07:42:29,669 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:42:29" (1/1) ... [2020-11-28 07:42:29,670 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:42:29" (1/1) ... [2020-11-28 07:42:29,677 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:42:29" (1/1) ... [2020-11-28 07:42:29,684 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:42:29" (1/1) ... [2020-11-28 07:42:29,686 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:42:29" (1/1) ... [2020-11-28 07:42:29,688 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-28 07:42:29,693 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-28 07:42:29,693 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-28 07:42:29,695 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-28 07:42:29,696 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:42:29" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_a1a03826-5df5-4d4e-967b-5d492367931c/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 [2020-11-28 07:42:29,774 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-28 07:42:29,775 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-28 07:42:29,775 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-11-28 07:42:29,775 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-11-28 07:42:29,775 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-11-28 07:42:29,776 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-11-28 07:42:30,357 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-28 07:42:30,357 INFO L298 CfgBuilder]: Removed 4 assume(true) statements. [2020-11-28 07:42:30,360 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 07:42:30 BoogieIcfgContainer [2020-11-28 07:42:30,360 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-28 07:42:30,362 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-11-28 07:42:30,362 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-11-28 07:42:30,366 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-11-28 07:42:30,366 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.11 07:42:29" (1/3) ... [2020-11-28 07:42:30,368 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5e015420 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 07:42:30, skipping insertion in model container [2020-11-28 07:42:30,368 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:42:29" (2/3) ... [2020-11-28 07:42:30,368 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5e015420 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 07:42:30, skipping insertion in model container [2020-11-28 07:42:30,369 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 07:42:30" (3/3) ... [2020-11-28 07:42:30,370 INFO L111 eAbstractionObserver]: Analyzing ICFG scopes2.c [2020-11-28 07:42:30,382 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-11-28 07:42:30,386 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 5 error locations. [2020-11-28 07:42:30,399 INFO L253 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2020-11-28 07:42:30,431 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-11-28 07:42:30,431 INFO L378 AbstractCegarLoop]: Hoare is false [2020-11-28 07:42:30,431 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-11-28 07:42:30,431 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-11-28 07:42:30,432 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-28 07:42:30,432 INFO L382 AbstractCegarLoop]: Difference is false [2020-11-28 07:42:30,432 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-28 07:42:30,432 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-11-28 07:42:30,446 INFO L276 IsEmpty]: Start isEmpty. Operand 10 states. [2020-11-28 07:42:30,455 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 3 [2020-11-28 07:42:30,456 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 07:42:30,457 INFO L422 BasicCegarLoop]: trace histogram [1, 1] [2020-11-28 07:42:30,457 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr2REQUIRES_VIOLATION]=== [2020-11-28 07:42:30,463 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 07:42:30,464 INFO L82 PathProgramCache]: Analyzing trace with hash 1778, now seen corresponding path program 1 times [2020-11-28 07:42:30,474 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-28 07:42:30,475 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1721858709] [2020-11-28 07:42:30,475 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 07:42:30,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-28 07:42:30,615 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-28 07:42:30,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-28 07:42:30,663 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-28 07:42:30,685 INFO L173 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2020-11-28 07:42:30,686 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-11-28 07:42:30,686 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-11-28 07:42:30,719 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 28.11 07:42:30 BoogieIcfgContainer [2020-11-28 07:42:30,719 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-11-28 07:42:30,721 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-11-28 07:42:30,722 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-11-28 07:42:30,722 INFO L275 PluginConnector]: Witness Printer initialized [2020-11-28 07:42:30,722 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 07:42:30" (3/4) ... [2020-11-28 07:42:30,724 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2020-11-28 07:42:30,776 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_a1a03826-5df5-4d4e-967b-5d492367931c/bin/utaipan/witness.graphml [2020-11-28 07:42:30,776 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-11-28 07:42:30,781 INFO L168 Benchmark]: Toolchain (without parser) took 1494.95 ms. Allocated memory was 100.7 MB in the beginning and 125.8 MB in the end (delta: 25.2 MB). Free memory was 73.2 MB in the beginning and 101.6 MB in the end (delta: -28.4 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-28 07:42:30,782 INFO L168 Benchmark]: CDTParser took 0.31 ms. Allocated memory is still 100.7 MB. Free memory is still 59.8 MB. There was no memory consumed. Max. memory is 16.1 GB. [2020-11-28 07:42:30,789 INFO L168 Benchmark]: CACSL2BoogieTranslator took 325.04 ms. Allocated memory is still 100.7 MB. Free memory was 72.9 MB in the beginning and 78.2 MB in the end (delta: -5.3 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2020-11-28 07:42:30,789 INFO L168 Benchmark]: Boogie Procedure Inliner took 36.79 ms. Allocated memory is still 100.7 MB. Free memory was 78.2 MB in the beginning and 76.9 MB in the end (delta: 1.3 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-28 07:42:30,790 INFO L168 Benchmark]: Boogie Preprocessor took 43.05 ms. Allocated memory is still 100.7 MB. Free memory was 76.9 MB in the beginning and 75.7 MB in the end (delta: 1.2 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-28 07:42:30,791 INFO L168 Benchmark]: RCFGBuilder took 667.45 ms. Allocated memory is still 100.7 MB. Free memory was 75.7 MB in the beginning and 56.8 MB in the end (delta: 18.9 MB). Peak memory consumption was 18.9 MB. Max. memory is 16.1 GB. [2020-11-28 07:42:30,792 INFO L168 Benchmark]: TraceAbstraction took 357.39 ms. Allocated memory was 100.7 MB in the beginning and 125.8 MB in the end (delta: 25.2 MB). Free memory was 56.4 MB in the beginning and 103.7 MB in the end (delta: -47.2 MB). Peak memory consumption was 16.2 MB. Max. memory is 16.1 GB. [2020-11-28 07:42:30,796 INFO L168 Benchmark]: Witness Printer took 55.21 ms. Allocated memory is still 125.8 MB. Free memory was 103.7 MB in the beginning and 101.6 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-28 07:42:30,802 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.31 ms. Allocated memory is still 100.7 MB. Free memory is still 59.8 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 325.04 ms. Allocated memory is still 100.7 MB. Free memory was 72.9 MB in the beginning and 78.2 MB in the end (delta: -5.3 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 36.79 ms. Allocated memory is still 100.7 MB. Free memory was 78.2 MB in the beginning and 76.9 MB in the end (delta: 1.3 MB). There was no memory consumed. Max. memory is 16.1 GB. * Boogie Preprocessor took 43.05 ms. Allocated memory is still 100.7 MB. Free memory was 76.9 MB in the beginning and 75.7 MB in the end (delta: 1.2 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 667.45 ms. Allocated memory is still 100.7 MB. Free memory was 75.7 MB in the beginning and 56.8 MB in the end (delta: 18.9 MB). Peak memory consumption was 18.9 MB. Max. memory is 16.1 GB. * TraceAbstraction took 357.39 ms. Allocated memory was 100.7 MB in the beginning and 125.8 MB in the end (delta: 25.2 MB). Free memory was 56.4 MB in the beginning and 103.7 MB in the end (delta: -47.2 MB). Peak memory consumption was 16.2 MB. Max. memory is 16.1 GB. * Witness Printer took 55.21 ms. Allocated memory is still 125.8 MB. Free memory was 103.7 MB in the beginning and 101.6 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.1 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...