./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/ldv-memsafety/memset2_-write.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_e9c6a84b-42e9-49ab-a95d-2f94230285ce/bin/uautomizer/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_e9c6a84b-42e9-49ab-a95d-2f94230285ce/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_e9c6a84b-42e9-49ab-a95d-2f94230285ce/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_e9c6a84b-42e9-49ab-a95d-2f94230285ce/bin/uautomizer/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/ldv-memsafety/memset2_-write.c -s /tmp/vcloud-vcloud-master/worker/run_dir_e9c6a84b-42e9-49ab-a95d-2f94230285ce/bin/uautomizer/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_e9c6a84b-42e9-49ab-a95d-2f94230285ce/bin/uautomizer --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 Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 504b8754db5656e557502f2f9e958956c9b0cd94 ........................................................................................................................................................................................................................................................................ 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 03:17:52,698 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-28 03:17:52,701 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-28 03:17:52,761 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-11-28 03:17:52,762 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-11-28 03:17:52,767 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-11-28 03:17:52,769 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-11-28 03:17:52,792 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-11-28 03:17:52,795 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-11-28 03:17:52,805 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-11-28 03:17:52,806 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-11-28 03:17:52,808 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-11-28 03:17:52,809 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-28 03:17:52,813 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-28 03:17:52,815 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-28 03:17:52,817 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-28 03:17:52,818 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-28 03:17:52,823 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-28 03:17:52,826 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-28 03:17:52,834 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-28 03:17:52,837 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-28 03:17:52,839 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-28 03:17:52,841 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-28 03:17:52,842 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-28 03:17:52,852 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-11-28 03:17:52,853 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-11-28 03:17:52,853 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-11-28 03:17:52,855 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-11-28 03:17:52,856 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-11-28 03:17:52,858 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-11-28 03:17:52,858 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-11-28 03:17:52,859 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-11-28 03:17:52,862 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-11-28 03:17:52,863 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-11-28 03:17:52,865 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-11-28 03:17:52,865 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-11-28 03:17:52,866 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-11-28 03:17:52,866 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-11-28 03:17:52,866 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-28 03:17:52,867 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-28 03:17:52,868 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-28 03:17:52,870 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_e9c6a84b-42e9-49ab-a95d-2f94230285ce/bin/uautomizer/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2020-11-28 03:17:52,906 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-28 03:17:52,907 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-28 03:17:52,908 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-11-28 03:17:52,908 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-11-28 03:17:52,908 INFO L138 SettingsManager]: * Use SBE=true [2020-11-28 03:17:52,908 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-28 03:17:52,908 INFO L138 SettingsManager]: * sizeof long=4 [2020-11-28 03:17:52,908 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2020-11-28 03:17:52,909 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-11-28 03:17:52,909 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-11-28 03:17:52,909 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-28 03:17:52,909 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2020-11-28 03:17:52,909 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2020-11-28 03:17:52,909 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2020-11-28 03:17:52,910 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-11-28 03:17:52,910 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2020-11-28 03:17:52,910 INFO L138 SettingsManager]: * sizeof long double=12 [2020-11-28 03:17:52,910 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-28 03:17:52,910 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-28 03:17:52,911 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-11-28 03:17:52,911 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-11-28 03:17:52,911 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-11-28 03:17:52,911 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-28 03:17:52,912 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-28 03:17:52,912 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-11-28 03:17:52,912 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-11-28 03:17:52,912 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-11-28 03:17:52,912 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-11-28 03:17:52,913 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode 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_e9c6a84b-42e9-49ab-a95d-2f94230285ce/bin/uautomizer/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_e9c6a84b-42e9-49ab-a95d-2f94230285ce/bin/uautomizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 504b8754db5656e557502f2f9e958956c9b0cd94 [2020-11-28 03:17:53,193 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-28 03:17:53,228 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-28 03:17:53,233 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-28 03:17:53,235 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-28 03:17:53,236 INFO L275 PluginConnector]: CDTParser initialized [2020-11-28 03:17:53,237 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_e9c6a84b-42e9-49ab-a95d-2f94230285ce/bin/uautomizer/../../sv-benchmarks/c/ldv-memsafety/memset2_-write.c [2020-11-28 03:17:53,314 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_e9c6a84b-42e9-49ab-a95d-2f94230285ce/bin/uautomizer/data/012e5b952/2417b4ed1d0743cb939ba40f5cca3564/FLAG8c6cff990 [2020-11-28 03:17:53,848 INFO L306 CDTParser]: Found 1 translation units. [2020-11-28 03:17:53,850 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_e9c6a84b-42e9-49ab-a95d-2f94230285ce/sv-benchmarks/c/ldv-memsafety/memset2_-write.c [2020-11-28 03:17:53,861 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_e9c6a84b-42e9-49ab-a95d-2f94230285ce/bin/uautomizer/data/012e5b952/2417b4ed1d0743cb939ba40f5cca3564/FLAG8c6cff990 [2020-11-28 03:17:54,221 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_e9c6a84b-42e9-49ab-a95d-2f94230285ce/bin/uautomizer/data/012e5b952/2417b4ed1d0743cb939ba40f5cca3564 [2020-11-28 03:17:54,224 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-28 03:17:54,225 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2020-11-28 03:17:54,227 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-28 03:17:54,227 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-28 03:17:54,230 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-28 03:17:54,231 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 03:17:54" (1/1) ... [2020-11-28 03:17:54,233 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@30f5cb4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:17:54, skipping insertion in model container [2020-11-28 03:17:54,233 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 03:17:54" (1/1) ... [2020-11-28 03:17:54,241 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-28 03:17:54,256 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-28 03:17:54,433 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-28 03:17:54,442 INFO L203 MainTranslator]: Completed pre-run [2020-11-28 03:17:54,472 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-28 03:17:54,487 INFO L208 MainTranslator]: Completed translation [2020-11-28 03:17:54,488 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:17:54 WrapperNode [2020-11-28 03:17:54,488 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-28 03:17:54,489 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-28 03:17:54,489 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-28 03:17:54,490 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-28 03:17:54,501 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:17:54" (1/1) ... [2020-11-28 03:17:54,502 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:17:54" (1/1) ... [2020-11-28 03:17:54,508 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:17:54" (1/1) ... [2020-11-28 03:17:54,509 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:17:54" (1/1) ... [2020-11-28 03:17:54,513 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:17:54" (1/1) ... [2020-11-28 03:17:54,516 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:17:54" (1/1) ... [2020-11-28 03:17:54,518 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:17:54" (1/1) ... [2020-11-28 03:17:54,519 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-28 03:17:54,520 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-28 03:17:54,521 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-28 03:17:54,521 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-28 03:17:54,522 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:17:54" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_e9c6a84b-42e9-49ab-a95d-2f94230285ce/bin/uautomizer/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 03:17:54,590 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-11-28 03:17:54,590 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-28 03:17:54,591 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-11-28 03:17:54,591 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2020-11-28 03:17:54,591 INFO L130 BoogieDeclarations]: Found specification of procedure memset [2020-11-28 03:17:54,591 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-11-28 03:17:54,591 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-11-28 03:17:54,592 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2020-11-28 03:17:54,592 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-11-28 03:17:54,592 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-11-28 03:17:54,592 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-28 03:17:54,720 WARN L798 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2020-11-28 03:17:54,840 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-28 03:17:54,853 INFO L298 CfgBuilder]: Removed 0 assume(true) statements. [2020-11-28 03:17:54,855 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 03:17:54 BoogieIcfgContainer [2020-11-28 03:17:54,855 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-28 03:17:54,856 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-11-28 03:17:54,865 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-11-28 03:17:54,869 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-11-28 03:17:54,869 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.11 03:17:54" (1/3) ... [2020-11-28 03:17:54,870 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@16ae6add and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 03:17:54, skipping insertion in model container [2020-11-28 03:17:54,870 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:17:54" (2/3) ... [2020-11-28 03:17:54,871 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@16ae6add and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 03:17:54, skipping insertion in model container [2020-11-28 03:17:54,871 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 03:17:54" (3/3) ... [2020-11-28 03:17:54,872 INFO L111 eAbstractionObserver]: Analyzing ICFG memset2_-write.c [2020-11-28 03:17:54,898 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-11-28 03:17:54,902 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 3 error locations. [2020-11-28 03:17:54,925 INFO L253 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2020-11-28 03:17:54,956 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-11-28 03:17:54,958 INFO L378 AbstractCegarLoop]: Hoare is false [2020-11-28 03:17:54,959 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-11-28 03:17:54,959 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-11-28 03:17:54,959 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-28 03:17:54,959 INFO L382 AbstractCegarLoop]: Difference is false [2020-11-28 03:17:54,959 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-28 03:17:54,959 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-11-28 03:17:54,980 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states. [2020-11-28 03:17:54,990 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2020-11-28 03:17:54,990 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 03:17:54,991 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2020-11-28 03:17:54,991 INFO L429 AbstractCegarLoop]: === Iteration 1 === [mainErr2ENSURES_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION]=== [2020-11-28 03:17:55,001 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 03:17:55,001 INFO L82 PathProgramCache]: Analyzing trace with hash -1092847368, now seen corresponding path program 1 times [2020-11-28 03:17:55,010 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 03:17:55,011 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [71561011] [2020-11-28 03:17:55,011 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 03:17:55,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:17:55,266 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-28 03:17:55,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:17:55,277 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 03:17:55,278 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [71561011] [2020-11-28 03:17:55,279 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-28 03:17:55,279 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-11-28 03:17:55,281 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [981148861] [2020-11-28 03:17:55,286 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-28 03:17:55,286 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-28 03:17:55,305 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-28 03:17:55,306 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-28 03:17:55,308 INFO L87 Difference]: Start difference. First operand 20 states. Second operand 4 states. [2020-11-28 03:17:55,425 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 03:17:55,425 INFO L93 Difference]: Finished difference Result 19 states and 19 transitions. [2020-11-28 03:17:55,426 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-28 03:17:55,428 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 7 [2020-11-28 03:17:55,428 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 03:17:55,435 INFO L225 Difference]: With dead ends: 19 [2020-11-28 03:17:55,436 INFO L226 Difference]: Without dead ends: 16 [2020-11-28 03:17:55,437 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-28 03:17:55,454 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16 states. [2020-11-28 03:17:55,468 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16 to 16. [2020-11-28 03:17:55,469 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2020-11-28 03:17:55,470 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 16 transitions. [2020-11-28 03:17:55,472 INFO L78 Accepts]: Start accepts. Automaton has 16 states and 16 transitions. Word has length 7 [2020-11-28 03:17:55,473 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 03:17:55,473 INFO L481 AbstractCegarLoop]: Abstraction has 16 states and 16 transitions. [2020-11-28 03:17:55,473 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-28 03:17:55,474 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states and 16 transitions. [2020-11-28 03:17:55,474 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2020-11-28 03:17:55,474 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 03:17:55,474 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2020-11-28 03:17:55,474 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-11-28 03:17:55,475 INFO L429 AbstractCegarLoop]: === Iteration 2 === [mainErr2ENSURES_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION]=== [2020-11-28 03:17:55,475 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 03:17:55,475 INFO L82 PathProgramCache]: Analyzing trace with hash -1092847367, now seen corresponding path program 1 times [2020-11-28 03:17:55,476 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 03:17:55,476 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1931620545] [2020-11-28 03:17:55,476 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 03:17:55,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-28 03:17:55,492 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-28 03:17:55,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-28 03:17:55,517 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-28 03:17:55,536 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-28 03:17:55,536 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-11-28 03:17:55,538 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-11-28 03:17:55,558 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 28.11 03:17:55 BoogieIcfgContainer [2020-11-28 03:17:55,558 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-11-28 03:17:55,559 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-11-28 03:17:55,559 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-11-28 03:17:55,559 INFO L275 PluginConnector]: Witness Printer initialized [2020-11-28 03:17:55,560 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 03:17:54" (3/4) ... [2020-11-28 03:17:55,562 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2020-11-28 03:17:55,598 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_e9c6a84b-42e9-49ab-a95d-2f94230285ce/bin/uautomizer/witness.graphml [2020-11-28 03:17:55,599 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-11-28 03:17:55,601 INFO L168 Benchmark]: Toolchain (without parser) took 1374.74 ms. Allocated memory is still 111.1 MB. Free memory was 80.9 MB in the beginning and 48.6 MB in the end (delta: 32.2 MB). Peak memory consumption was 30.5 MB. Max. memory is 16.1 GB. [2020-11-28 03:17:55,602 INFO L168 Benchmark]: CDTParser took 0.88 ms. Allocated memory is still 77.6 MB. Free memory is still 37.2 MB. There was no memory consumed. Max. memory is 16.1 GB. [2020-11-28 03:17:55,603 INFO L168 Benchmark]: CACSL2BoogieTranslator took 261.81 ms. Allocated memory is still 111.1 MB. Free memory was 80.6 MB in the beginning and 89.1 MB in the end (delta: -8.5 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2020-11-28 03:17:55,605 INFO L168 Benchmark]: Boogie Preprocessor took 30.41 ms. Allocated memory is still 111.1 MB. Free memory was 89.1 MB in the beginning and 87.9 MB in the end (delta: 1.2 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-28 03:17:55,606 INFO L168 Benchmark]: RCFGBuilder took 334.72 ms. Allocated memory is still 111.1 MB. Free memory was 87.9 MB in the beginning and 77.1 MB in the end (delta: 10.8 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2020-11-28 03:17:55,609 INFO L168 Benchmark]: TraceAbstraction took 701.75 ms. Allocated memory is still 111.1 MB. Free memory was 76.5 MB in the beginning and 50.1 MB in the end (delta: 26.4 MB). Peak memory consumption was 25.2 MB. Max. memory is 16.1 GB. [2020-11-28 03:17:55,619 INFO L168 Benchmark]: Witness Printer took 40.31 ms. Allocated memory is still 111.1 MB. Free memory was 50.1 MB in the beginning and 48.6 MB in the end (delta: 1.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-28 03:17:55,625 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.88 ms. Allocated memory is still 77.6 MB. Free memory is still 37.2 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 261.81 ms. Allocated memory is still 111.1 MB. Free memory was 80.6 MB in the beginning and 89.1 MB in the end (delta: -8.5 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 30.41 ms. Allocated memory is still 111.1 MB. Free memory was 89.1 MB in the beginning and 87.9 MB in the end (delta: 1.2 MB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 334.72 ms. Allocated memory is still 111.1 MB. Free memory was 87.9 MB in the beginning and 77.1 MB in the end (delta: 10.8 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * TraceAbstraction took 701.75 ms. Allocated memory is still 111.1 MB. Free memory was 76.5 MB in the beginning and 50.1 MB in the end (delta: 26.4 MB). Peak memory consumption was 25.2 MB. Max. memory is 16.1 GB. * Witness Printer took 40.31 ms. Allocated memory is still 111.1 MB. Free memory was 50.1 MB in the beginning and 48.6 MB in the end (delta: 1.5 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: 22]: pointer dereference may fail pointer dereference may fail We found a FailurePath: [L21] struct compstat cstats ; VAL [cstats={2:0}] - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 20 locations, 3 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 0.5s, OverallIterations: 2, TraceHistogramMax: 1, AutomataDifference: 0.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 13 SDtfs, 6 SDslu, 8 SDs, 0 SdLazy, 24 SolverSat, 3 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=20occurred 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: 0.0s AutomataMinimizationTime, 1 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.1s InterpolantComputationTime, 14 NumberOfCodeBlocks, 14 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 6 ConstructedInterpolants, 0 QuantifiedInterpolants, 114 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 1 InterpolantComputations, 1 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...