./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/ldv-memsafety/memsetNonZero2_-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_38c8a9e0-e25a-430c-86f9-daeb6fffef28/bin/uautomizer/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_38c8a9e0-e25a-430c-86f9-daeb6fffef28/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_38c8a9e0-e25a-430c-86f9-daeb6fffef28/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_38c8a9e0-e25a-430c-86f9-daeb6fffef28/bin/uautomizer/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/ldv-memsafety/memsetNonZero2_-write.c -s /tmp/vcloud-vcloud-master/worker/run_dir_38c8a9e0-e25a-430c-86f9-daeb6fffef28/bin/uautomizer/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_38c8a9e0-e25a-430c-86f9-daeb6fffef28/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 7785be5078a920429dc2d1af3a353f3d5cac6d6f ......................................................................................................................................................................................................................................................................... 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 [2020-11-30 00:56:20,567 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-30 00:56:20,570 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-30 00:56:20,633 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-11-30 00:56:20,634 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-11-30 00:56:20,640 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-11-30 00:56:20,645 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-11-30 00:56:20,663 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-11-30 00:56:20,666 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-11-30 00:56:20,673 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-11-30 00:56:20,675 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-11-30 00:56:20,677 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-11-30 00:56:20,678 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-30 00:56:20,682 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-30 00:56:20,684 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-30 00:56:20,686 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-30 00:56:20,687 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-30 00:56:20,689 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-30 00:56:20,695 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-30 00:56:20,707 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-30 00:56:20,709 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-30 00:56:20,711 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-30 00:56:20,714 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-30 00:56:20,715 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-30 00:56:20,726 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-11-30 00:56:20,726 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-11-30 00:56:20,727 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-11-30 00:56:20,730 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-11-30 00:56:20,731 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-11-30 00:56:20,732 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-11-30 00:56:20,733 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-11-30 00:56:20,734 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-11-30 00:56:20,737 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-11-30 00:56:20,738 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-11-30 00:56:20,739 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-11-30 00:56:20,740 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-11-30 00:56:20,741 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-11-30 00:56:20,741 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-11-30 00:56:20,741 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-30 00:56:20,743 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-30 00:56:20,744 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-30 00:56:20,747 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_38c8a9e0-e25a-430c-86f9-daeb6fffef28/bin/uautomizer/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2020-11-30 00:56:20,802 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-30 00:56:20,803 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-30 00:56:20,805 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-11-30 00:56:20,805 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-11-30 00:56:20,805 INFO L138 SettingsManager]: * Use SBE=true [2020-11-30 00:56:20,806 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-30 00:56:20,806 INFO L138 SettingsManager]: * sizeof long=4 [2020-11-30 00:56:20,806 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2020-11-30 00:56:20,806 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-11-30 00:56:20,807 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-11-30 00:56:20,808 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-30 00:56:20,808 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2020-11-30 00:56:20,808 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2020-11-30 00:56:20,809 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2020-11-30 00:56:20,809 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-11-30 00:56:20,809 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2020-11-30 00:56:20,809 INFO L138 SettingsManager]: * sizeof long double=12 [2020-11-30 00:56:20,809 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-30 00:56:20,810 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-30 00:56:20,810 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-11-30 00:56:20,810 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-11-30 00:56:20,810 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-11-30 00:56:20,811 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-30 00:56:20,811 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-30 00:56:20,811 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-11-30 00:56:20,811 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-11-30 00:56:20,812 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-11-30 00:56:20,812 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-11-30 00:56:20,812 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_38c8a9e0-e25a-430c-86f9-daeb6fffef28/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_38c8a9e0-e25a-430c-86f9-daeb6fffef28/bin/uautomizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 7785be5078a920429dc2d1af3a353f3d5cac6d6f [2020-11-30 00:56:21,145 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-30 00:56:21,179 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-30 00:56:21,183 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-30 00:56:21,185 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-30 00:56:21,186 INFO L275 PluginConnector]: CDTParser initialized [2020-11-30 00:56:21,187 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_38c8a9e0-e25a-430c-86f9-daeb6fffef28/bin/uautomizer/../../sv-benchmarks/c/ldv-memsafety/memsetNonZero2_-write.c [2020-11-30 00:56:21,277 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_38c8a9e0-e25a-430c-86f9-daeb6fffef28/bin/uautomizer/data/9206183b9/ea768f2e426d458d8f2d402d603990a2/FLAG9b25d15a6 [2020-11-30 00:56:21,978 INFO L306 CDTParser]: Found 1 translation units. [2020-11-30 00:56:21,979 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_38c8a9e0-e25a-430c-86f9-daeb6fffef28/sv-benchmarks/c/ldv-memsafety/memsetNonZero2_-write.c [2020-11-30 00:56:21,992 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_38c8a9e0-e25a-430c-86f9-daeb6fffef28/bin/uautomizer/data/9206183b9/ea768f2e426d458d8f2d402d603990a2/FLAG9b25d15a6 [2020-11-30 00:56:22,330 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_38c8a9e0-e25a-430c-86f9-daeb6fffef28/bin/uautomizer/data/9206183b9/ea768f2e426d458d8f2d402d603990a2 [2020-11-30 00:56:22,334 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-30 00:56:22,336 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2020-11-30 00:56:22,338 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-30 00:56:22,339 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-30 00:56:22,344 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-30 00:56:22,345 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.11 12:56:22" (1/1) ... [2020-11-30 00:56:22,347 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@392b8ae5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:56:22, skipping insertion in model container [2020-11-30 00:56:22,348 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.11 12:56:22" (1/1) ... [2020-11-30 00:56:22,357 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-30 00:56:22,373 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-30 00:56:22,568 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-30 00:56:22,613 INFO L203 MainTranslator]: Completed pre-run [2020-11-30 00:56:22,631 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-30 00:56:22,648 INFO L208 MainTranslator]: Completed translation [2020-11-30 00:56:22,649 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:56:22 WrapperNode [2020-11-30 00:56:22,649 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-30 00:56:22,650 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-30 00:56:22,651 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-30 00:56:22,651 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-30 00:56:22,666 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:56:22" (1/1) ... [2020-11-30 00:56:22,667 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:56:22" (1/1) ... [2020-11-30 00:56:22,674 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:56:22" (1/1) ... [2020-11-30 00:56:22,674 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:56:22" (1/1) ... [2020-11-30 00:56:22,685 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:56:22" (1/1) ... [2020-11-30 00:56:22,692 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:56:22" (1/1) ... [2020-11-30 00:56:22,694 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:56:22" (1/1) ... [2020-11-30 00:56:22,703 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-30 00:56:22,706 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-30 00:56:22,706 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-30 00:56:22,706 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-30 00:56:22,707 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:56:22" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_38c8a9e0-e25a-430c-86f9-daeb6fffef28/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 [2020-11-30 00:56:22,801 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-11-30 00:56:22,801 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-30 00:56:22,802 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-11-30 00:56:22,802 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2020-11-30 00:56:22,803 INFO L130 BoogieDeclarations]: Found specification of procedure memset [2020-11-30 00:56:22,803 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-11-30 00:56:22,803 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-11-30 00:56:22,803 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2020-11-30 00:56:22,803 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-11-30 00:56:22,804 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-11-30 00:56:22,805 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-30 00:56:22,953 WARN L798 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2020-11-30 00:56:23,287 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-30 00:56:23,290 INFO L298 CfgBuilder]: Removed 0 assume(true) statements. [2020-11-30 00:56:23,294 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.11 12:56:23 BoogieIcfgContainer [2020-11-30 00:56:23,294 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-30 00:56:23,297 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-11-30 00:56:23,297 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-11-30 00:56:23,302 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-11-30 00:56:23,303 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 30.11 12:56:22" (1/3) ... [2020-11-30 00:56:23,304 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5f774227 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.11 12:56:23, skipping insertion in model container [2020-11-30 00:56:23,304 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:56:22" (2/3) ... [2020-11-30 00:56:23,305 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5f774227 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.11 12:56:23, skipping insertion in model container [2020-11-30 00:56:23,305 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.11 12:56:23" (3/3) ... [2020-11-30 00:56:23,306 INFO L111 eAbstractionObserver]: Analyzing ICFG memsetNonZero2_-write.c [2020-11-30 00:56:23,319 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-11-30 00:56:23,324 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 3 error locations. [2020-11-30 00:56:23,339 INFO L253 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2020-11-30 00:56:23,378 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-11-30 00:56:23,379 INFO L378 AbstractCegarLoop]: Hoare is false [2020-11-30 00:56:23,379 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-11-30 00:56:23,379 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-11-30 00:56:23,379 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-30 00:56:23,380 INFO L382 AbstractCegarLoop]: Difference is false [2020-11-30 00:56:23,380 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-30 00:56:23,380 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-11-30 00:56:23,402 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states. [2020-11-30 00:56:23,417 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2020-11-30 00:56:23,417 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 00:56:23,418 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2020-11-30 00:56:23,419 INFO L429 AbstractCegarLoop]: === Iteration 1 === [mainErr2ENSURES_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION]=== [2020-11-30 00:56:23,430 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 00:56:23,431 INFO L82 PathProgramCache]: Analyzing trace with hash -1092847368, now seen corresponding path program 1 times [2020-11-30 00:56:23,443 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-30 00:56:23,444 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1645226420] [2020-11-30 00:56:23,445 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 00:56:23,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 00:56:23,727 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-30 00:56:23,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 00:56:23,740 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 00:56:23,743 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1645226420] [2020-11-30 00:56:23,744 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-30 00:56:23,744 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-11-30 00:56:23,746 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2061847070] [2020-11-30 00:56:23,751 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-30 00:56:23,751 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-30 00:56:23,773 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-30 00:56:23,775 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-30 00:56:23,777 INFO L87 Difference]: Start difference. First operand 20 states. Second operand 4 states. [2020-11-30 00:56:23,920 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 00:56:23,921 INFO L93 Difference]: Finished difference Result 19 states and 19 transitions. [2020-11-30 00:56:23,922 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-30 00:56:23,923 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 7 [2020-11-30 00:56:23,924 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 00:56:23,933 INFO L225 Difference]: With dead ends: 19 [2020-11-30 00:56:23,933 INFO L226 Difference]: Without dead ends: 16 [2020-11-30 00:56:23,941 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 [2020-11-30 00:56:23,963 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16 states. [2020-11-30 00:56:23,991 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16 to 16. [2020-11-30 00:56:23,993 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2020-11-30 00:56:23,996 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 16 transitions. [2020-11-30 00:56:23,997 INFO L78 Accepts]: Start accepts. Automaton has 16 states and 16 transitions. Word has length 7 [2020-11-30 00:56:23,999 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 00:56:23,999 INFO L481 AbstractCegarLoop]: Abstraction has 16 states and 16 transitions. [2020-11-30 00:56:23,999 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-30 00:56:23,999 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states and 16 transitions. [2020-11-30 00:56:24,000 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2020-11-30 00:56:24,000 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 00:56:24,001 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2020-11-30 00:56:24,001 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-11-30 00:56:24,001 INFO L429 AbstractCegarLoop]: === Iteration 2 === [mainErr2ENSURES_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION]=== [2020-11-30 00:56:24,003 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 00:56:24,020 INFO L82 PathProgramCache]: Analyzing trace with hash -1092847367, now seen corresponding path program 1 times [2020-11-30 00:56:24,020 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-30 00:56:24,021 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1006515125] [2020-11-30 00:56:24,021 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 00:56:24,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-30 00:56:24,075 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-30 00:56:24,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-30 00:56:24,097 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-30 00:56:24,121 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-30 00:56:24,121 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-11-30 00:56:24,122 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-11-30 00:56:24,151 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 30.11 12:56:24 BoogieIcfgContainer [2020-11-30 00:56:24,151 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-11-30 00:56:24,164 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-11-30 00:56:24,164 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-11-30 00:56:24,165 INFO L275 PluginConnector]: Witness Printer initialized [2020-11-30 00:56:24,165 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.11 12:56:23" (3/4) ... [2020-11-30 00:56:24,169 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2020-11-30 00:56:24,210 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_38c8a9e0-e25a-430c-86f9-daeb6fffef28/bin/uautomizer/witness.graphml [2020-11-30 00:56:24,210 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-11-30 00:56:24,213 INFO L168 Benchmark]: Toolchain (without parser) took 1875.14 ms. Allocated memory is still 111.1 MB. Free memory was 80.4 MB in the beginning and 84.4 MB in the end (delta: -4.0 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-30 00:56:24,214 INFO L168 Benchmark]: CDTParser took 0.33 ms. Allocated memory is still 81.8 MB. Free memory was 39.5 MB in the beginning and 39.4 MB in the end (delta: 38.3 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-30 00:56:24,215 INFO L168 Benchmark]: CACSL2BoogieTranslator took 311.32 ms. Allocated memory is still 111.1 MB. Free memory was 80.4 MB in the beginning and 88.7 MB in the end (delta: -8.3 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2020-11-30 00:56:24,217 INFO L168 Benchmark]: Boogie Preprocessor took 53.13 ms. Allocated memory is still 111.1 MB. Free memory was 88.7 MB in the beginning and 87.4 MB in the end (delta: 1.3 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-30 00:56:24,218 INFO L168 Benchmark]: RCFGBuilder took 589.35 ms. Allocated memory is still 111.1 MB. Free memory was 87.4 MB in the beginning and 76.5 MB in the end (delta: 10.9 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2020-11-30 00:56:24,221 INFO L168 Benchmark]: TraceAbstraction took 853.99 ms. Allocated memory is still 111.1 MB. Free memory was 76.2 MB in the beginning and 85.9 MB in the end (delta: -9.7 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-30 00:56:24,227 INFO L168 Benchmark]: Witness Printer took 46.48 ms. Allocated memory is still 111.1 MB. Free memory was 85.9 MB in the beginning and 84.4 MB in the end (delta: 1.4 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-30 00:56:24,235 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.33 ms. Allocated memory is still 81.8 MB. Free memory was 39.5 MB in the beginning and 39.4 MB in the end (delta: 38.3 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 311.32 ms. Allocated memory is still 111.1 MB. Free memory was 80.4 MB in the beginning and 88.7 MB in the end (delta: -8.3 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 53.13 ms. Allocated memory is still 111.1 MB. Free memory was 88.7 MB in the beginning and 87.4 MB in the end (delta: 1.3 MB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 589.35 ms. Allocated memory is still 111.1 MB. Free memory was 87.4 MB in the beginning and 76.5 MB in the end (delta: 10.9 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * TraceAbstraction took 853.99 ms. Allocated memory is still 111.1 MB. Free memory was 76.2 MB in the beginning and 85.9 MB in the end (delta: -9.7 MB). There was no memory consumed. Max. memory is 16.1 GB. * Witness Printer took 46.48 ms. Allocated memory is still 111.1 MB. Free memory was 85.9 MB in the beginning and 84.4 MB in the end (delta: 1.4 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: 0.7s, 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...