./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/array-memsafety/cstrncat_unsafe.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version f470102c Calling Ultimate with: /usr/lib/jvm/java-8-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/run_dir_23fb2e94-fdeb-495e-9e84-b7cbd0e6da27/bin/uautomizer/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/run_dir_23fb2e94-fdeb-495e-9e84-b7cbd0e6da27/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_23fb2e94-fdeb-495e-9e84-b7cbd0e6da27/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_23fb2e94-fdeb-495e-9e84-b7cbd0e6da27/bin/uautomizer/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/array-memsafety/cstrncat_unsafe.c -s /tmp/vcloud-vcloud-master/worker/run_dir_23fb2e94-fdeb-495e-9e84-b7cbd0e6da27/bin/uautomizer/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_23fb2e94-fdeb-495e-9e84-b7cbd0e6da27/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 25bb35238109f4fc42bc09877cec45401fedd3ae .............................................................................................................................................................................................................................. Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE(valid-deref) --- Real Ultimate output --- This is Ultimate 0.1.25-f470102 [2019-12-07 14:41:52,678 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-12-07 14:41:52,679 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-12-07 14:41:52,687 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-12-07 14:41:52,687 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-12-07 14:41:52,688 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-12-07 14:41:52,689 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-12-07 14:41:52,690 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-12-07 14:41:52,691 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-12-07 14:41:52,692 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-12-07 14:41:52,693 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-12-07 14:41:52,693 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-12-07 14:41:52,694 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-12-07 14:41:52,694 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-12-07 14:41:52,695 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-12-07 14:41:52,696 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-12-07 14:41:52,696 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-12-07 14:41:52,697 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-12-07 14:41:52,698 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-12-07 14:41:52,700 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-12-07 14:41:52,701 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-12-07 14:41:52,702 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-12-07 14:41:52,703 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-12-07 14:41:52,703 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-12-07 14:41:52,705 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-12-07 14:41:52,705 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-12-07 14:41:52,705 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-12-07 14:41:52,706 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-12-07 14:41:52,706 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-12-07 14:41:52,707 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-12-07 14:41:52,707 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-12-07 14:41:52,707 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-12-07 14:41:52,707 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-12-07 14:41:52,708 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-12-07 14:41:52,709 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-12-07 14:41:52,709 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-12-07 14:41:52,709 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-12-07 14:41:52,709 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-12-07 14:41:52,709 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-12-07 14:41:52,710 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-12-07 14:41:52,710 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-12-07 14:41:52,711 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_23fb2e94-fdeb-495e-9e84-b7cbd0e6da27/bin/uautomizer/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2019-12-07 14:41:52,720 INFO L113 SettingsManager]: Loading preferences was successful [2019-12-07 14:41:52,720 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-12-07 14:41:52,720 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-12-07 14:41:52,721 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-12-07 14:41:52,721 INFO L138 SettingsManager]: * Use SBE=true [2019-12-07 14:41:52,721 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-12-07 14:41:52,721 INFO L138 SettingsManager]: * sizeof long=4 [2019-12-07 14:41:52,721 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2019-12-07 14:41:52,721 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-12-07 14:41:52,721 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-12-07 14:41:52,722 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-12-07 14:41:52,722 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2019-12-07 14:41:52,722 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2019-12-07 14:41:52,722 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2019-12-07 14:41:52,722 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-12-07 14:41:52,722 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2019-12-07 14:41:52,722 INFO L138 SettingsManager]: * sizeof long double=12 [2019-12-07 14:41:52,722 INFO L138 SettingsManager]: * Use constant arrays=true [2019-12-07 14:41:52,723 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-12-07 14:41:52,723 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-12-07 14:41:52,723 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-12-07 14:41:52,723 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-12-07 14:41:52,723 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-12-07 14:41:52,723 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-12-07 14:41:52,723 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-12-07 14:41:52,723 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-12-07 14:41:52,724 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-12-07 14:41:52,724 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2019-12-07 14:41:52,724 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode 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_23fb2e94-fdeb-495e-9e84-b7cbd0e6da27/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 -> 25bb35238109f4fc42bc09877cec45401fedd3ae [2019-12-07 14:41:52,825 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-12-07 14:41:52,833 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-12-07 14:41:52,835 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-12-07 14:41:52,836 INFO L271 PluginConnector]: Initializing CDTParser... [2019-12-07 14:41:52,836 INFO L275 PluginConnector]: CDTParser initialized [2019-12-07 14:41:52,837 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_23fb2e94-fdeb-495e-9e84-b7cbd0e6da27/bin/uautomizer/../../sv-benchmarks/c/array-memsafety/cstrncat_unsafe.c [2019-12-07 14:41:52,875 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_23fb2e94-fdeb-495e-9e84-b7cbd0e6da27/bin/uautomizer/data/e8bc49430/b7682e7c800f439d95c1cad1c79661f7/FLAG5862fd2da [2019-12-07 14:41:53,348 INFO L306 CDTParser]: Found 1 translation units. [2019-12-07 14:41:53,349 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_23fb2e94-fdeb-495e-9e84-b7cbd0e6da27/sv-benchmarks/c/array-memsafety/cstrncat_unsafe.c [2019-12-07 14:41:53,353 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_23fb2e94-fdeb-495e-9e84-b7cbd0e6da27/bin/uautomizer/data/e8bc49430/b7682e7c800f439d95c1cad1c79661f7/FLAG5862fd2da [2019-12-07 14:41:53,362 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_23fb2e94-fdeb-495e-9e84-b7cbd0e6da27/bin/uautomizer/data/e8bc49430/b7682e7c800f439d95c1cad1c79661f7 [2019-12-07 14:41:53,364 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-12-07 14:41:53,365 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2019-12-07 14:41:53,365 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-12-07 14:41:53,365 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-12-07 14:41:53,367 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-12-07 14:41:53,368 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.12 02:41:53" (1/1) ... [2019-12-07 14:41:53,369 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@309c68b3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 02:41:53, skipping insertion in model container [2019-12-07 14:41:53,370 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.12 02:41:53" (1/1) ... [2019-12-07 14:41:53,374 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2019-12-07 14:41:53,384 INFO L178 MainTranslator]: Built tables and reachable declarations [2019-12-07 14:41:53,481 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-12-07 14:41:53,487 INFO L203 MainTranslator]: Completed pre-run [2019-12-07 14:41:53,528 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-12-07 14:41:53,538 INFO L208 MainTranslator]: Completed translation [2019-12-07 14:41:53,538 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 02:41:53 WrapperNode [2019-12-07 14:41:53,539 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-12-07 14:41:53,539 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-12-07 14:41:53,539 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-12-07 14:41:53,539 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-12-07 14:41:53,548 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 02:41:53" (1/1) ... [2019-12-07 14:41:53,548 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 02:41:53" (1/1) ... [2019-12-07 14:41:53,553 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 02:41:53" (1/1) ... [2019-12-07 14:41:53,553 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 02:41:53" (1/1) ... [2019-12-07 14:41:53,558 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 02:41:53" (1/1) ... [2019-12-07 14:41:53,561 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 02:41:53" (1/1) ... [2019-12-07 14:41:53,562 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 02:41:53" (1/1) ... [2019-12-07 14:41:53,563 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-12-07 14:41:53,564 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-12-07 14:41:53,564 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-12-07 14:41:53,564 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-12-07 14:41:53,565 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 02:41:53" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_23fb2e94-fdeb-495e-9e84-b7cbd0e6da27/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 [2019-12-07 14:41:53,607 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-12-07 14:41:53,607 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-12-07 14:41:53,607 INFO L138 BoogieDeclarations]: Found implementation of procedure cstrncat [2019-12-07 14:41:53,607 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-12-07 14:41:53,607 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-12-07 14:41:53,607 INFO L130 BoogieDeclarations]: Found specification of procedure cstrncat [2019-12-07 14:41:53,608 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-12-07 14:41:53,608 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-12-07 14:41:53,608 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-12-07 14:41:53,608 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-12-07 14:41:53,608 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-12-07 14:41:53,608 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-12-07 14:41:53,762 INFO L282 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-12-07 14:41:53,762 INFO L287 CfgBuilder]: Removed 2 assume(true) statements. [2019-12-07 14:41:53,763 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.12 02:41:53 BoogieIcfgContainer [2019-12-07 14:41:53,763 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-12-07 14:41:53,763 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-12-07 14:41:53,763 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-12-07 14:41:53,765 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-12-07 14:41:53,765 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.12 02:41:53" (1/3) ... [2019-12-07 14:41:53,766 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4b38383c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.12 02:41:53, skipping insertion in model container [2019-12-07 14:41:53,766 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 02:41:53" (2/3) ... [2019-12-07 14:41:53,766 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4b38383c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.12 02:41:53, skipping insertion in model container [2019-12-07 14:41:53,766 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.12 02:41:53" (3/3) ... [2019-12-07 14:41:53,767 INFO L109 eAbstractionObserver]: Analyzing ICFG cstrncat_unsafe.c [2019-12-07 14:41:53,773 INFO L156 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-12-07 14:41:53,777 INFO L168 ceAbstractionStarter]: Appying trace abstraction to program that has 11 error locations. [2019-12-07 14:41:53,784 INFO L249 AbstractCegarLoop]: Starting to check reachability of 11 error locations. [2019-12-07 14:41:53,796 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-12-07 14:41:53,797 INFO L374 AbstractCegarLoop]: Hoare is false [2019-12-07 14:41:53,797 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-12-07 14:41:53,797 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-12-07 14:41:53,797 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-12-07 14:41:53,797 INFO L378 AbstractCegarLoop]: Difference is false [2019-12-07 14:41:53,797 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-12-07 14:41:53,797 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-12-07 14:41:53,808 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states. [2019-12-07 14:41:53,814 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2019-12-07 14:41:53,814 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 14:41:53,815 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-07 14:41:53,815 INFO L410 AbstractCegarLoop]: === Iteration 1 === [mainErr0ENSURES_VIOLATIONMEMORY_LEAK, cstrncatErr0REQUIRES_VIOLATION, cstrncatErr5REQUIRES_VIOLATION, cstrncatErr7REQUIRES_VIOLATION, cstrncatErr6REQUIRES_VIOLATION, cstrncatErr1REQUIRES_VIOLATION, cstrncatErr8REQUIRES_VIOLATION, cstrncatErr3REQUIRES_VIOLATION, cstrncatErr2REQUIRES_VIOLATION, cstrncatErr4REQUIRES_VIOLATION, cstrncatErr9REQUIRES_VIOLATION]=== [2019-12-07 14:41:53,818 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 14:41:53,819 INFO L82 PathProgramCache]: Analyzing trace with hash 1122182536, now seen corresponding path program 1 times [2019-12-07 14:41:53,824 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 14:41:53,824 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [57177180] [2019-12-07 14:41:53,824 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 14:41:53,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-07 14:41:53,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-07 14:41:53,913 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-12-07 14:41:53,913 INFO L475 BasicCegarLoop]: Counterexample might be feasible [2019-12-07 14:41:53,927 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 07.12 02:41:53 BoogieIcfgContainer [2019-12-07 14:41:53,927 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-12-07 14:41:53,927 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-12-07 14:41:53,927 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-12-07 14:41:53,928 INFO L275 PluginConnector]: Witness Printer initialized [2019-12-07 14:41:53,928 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.12 02:41:53" (3/4) ... [2019-12-07 14:41:53,929 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2019-12-07 14:41:53,955 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_23fb2e94-fdeb-495e-9e84-b7cbd0e6da27/bin/uautomizer/witness.graphml [2019-12-07 14:41:53,955 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-12-07 14:41:53,956 INFO L168 Benchmark]: Toolchain (without parser) took 591.71 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 84.9 MB). Free memory was 937.9 MB in the beginning and 1.0 GB in the end (delta: -99.0 MB). There was no memory consumed. Max. memory is 11.5 GB. [2019-12-07 14:41:53,957 INFO L168 Benchmark]: CDTParser took 0.14 ms. Allocated memory is still 1.0 GB. Free memory is still 959.5 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-12-07 14:41:53,957 INFO L168 Benchmark]: CACSL2BoogieTranslator took 173.83 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 84.9 MB). Free memory was 936.6 MB in the beginning and 1.1 GB in the end (delta: -148.4 MB). Peak memory consumption was 20.6 MB. Max. memory is 11.5 GB. [2019-12-07 14:41:53,958 INFO L168 Benchmark]: Boogie Preprocessor took 24.48 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 4.0 MB). Peak memory consumption was 4.0 MB. Max. memory is 11.5 GB. [2019-12-07 14:41:53,958 INFO L168 Benchmark]: RCFGBuilder took 198.94 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 21.1 MB). Peak memory consumption was 21.1 MB. Max. memory is 11.5 GB. [2019-12-07 14:41:53,958 INFO L168 Benchmark]: TraceAbstraction took 163.83 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.0 GB in the end (delta: 18.9 MB). Peak memory consumption was 18.9 MB. Max. memory is 11.5 GB. [2019-12-07 14:41:53,959 INFO L168 Benchmark]: Witness Printer took 27.85 ms. Allocated memory is still 1.1 GB. Free memory was 1.0 GB in the beginning and 1.0 GB in the end (delta: 2.7 MB). Peak memory consumption was 2.7 MB. Max. memory is 11.5 GB. [2019-12-07 14:41:53,961 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.14 ms. Allocated memory is still 1.0 GB. Free memory is still 959.5 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 173.83 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 84.9 MB). Free memory was 936.6 MB in the beginning and 1.1 GB in the end (delta: -148.4 MB). Peak memory consumption was 20.6 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 24.48 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 4.0 MB). Peak memory consumption was 4.0 MB. Max. memory is 11.5 GB. * RCFGBuilder took 198.94 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 21.1 MB). Peak memory consumption was 21.1 MB. Max. memory is 11.5 GB. * TraceAbstraction took 163.83 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.0 GB in the end (delta: 18.9 MB). Peak memory consumption was 18.9 MB. Max. memory is 11.5 GB. * Witness Printer took 27.85 ms. Allocated memory is still 1.1 GB. Free memory was 1.0 GB in the beginning and 1.0 GB in the end (delta: 2.7 MB). Peak memory consumption was 2.7 MB. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 7]: pointer dereference may fail pointer dereference may fail We found a FailurePath: [L24] char *s1; [L25] char *s2; [L26] int n = __VERIFIER_nondet_int(); [L27] CALL cstrncat(s1, s2, n) VAL [\old(n)=0, s1={6:5}, s2={7:2}] [L5] char *s = s1; VAL [\old(n)=0, n=0, s={6:5}, s1={6:5}, s1={6:5}, s2={7:2}, s2={7:2}] [L7] \read(*s) - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 38 locations, 11 error locations. Result: UNSAFE, OverallTime: 0.1s, OverallIterations: 1, TraceHistogramMax: 1, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, HoareTripleCheckerStatistics: No data available, PredicateUnifierStatistics: No data available, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=38occurred 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, 9 NumberOfCodeBlocks, 9 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, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! Received shutdown request...