./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/array-memsafety/cstrncpy_unsafe.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 678e0110 Using bit-precise analysis Retrying with bit-precise analysis Calling Ultimate with: /usr/lib/jvm/java-8-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/run_dir_7c3bc10d-829f-4c06-b3d1-25247d6a7bb2/bin/uautomizer/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/run_dir_7c3bc10d-829f-4c06-b3d1-25247d6a7bb2/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_7c3bc10d-829f-4c06-b3d1-25247d6a7bb2/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_7c3bc10d-829f-4c06-b3d1-25247d6a7bb2/bin/uautomizer/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/array-memsafety/cstrncpy_unsafe.c -s /tmp/vcloud-vcloud-master/worker/run_dir_7c3bc10d-829f-4c06-b3d1-25247d6a7bb2/bin/uautomizer/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_7c3bc10d-829f-4c06-b3d1-25247d6a7bb2/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 41f0468d692f5518317d4661ccff168131d2a4eb ......................................................................................................................................................................................................................................... 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 --- Skipped default analysis because property is memsafety ### Bit-precise run ### This is Ultimate 0.1.24-678e011 [2019-11-20 04:36:06,679 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-20 04:36:06,681 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-20 04:36:06,696 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-11-20 04:36:06,696 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-11-20 04:36:06,698 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-11-20 04:36:06,699 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-11-20 04:36:06,709 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-11-20 04:36:06,714 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-11-20 04:36:06,718 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-11-20 04:36:06,719 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-11-20 04:36:06,720 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-11-20 04:36:06,721 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-20 04:36:06,722 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-20 04:36:06,723 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-20 04:36:06,724 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-20 04:36:06,724 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-20 04:36:06,725 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-20 04:36:06,727 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-20 04:36:06,729 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-20 04:36:06,730 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-20 04:36:06,731 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-20 04:36:06,732 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-20 04:36:06,733 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-20 04:36:06,735 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-11-20 04:36:06,735 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-11-20 04:36:06,735 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-11-20 04:36:06,736 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-11-20 04:36:06,737 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-11-20 04:36:06,737 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-11-20 04:36:06,738 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-11-20 04:36:06,738 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-11-20 04:36:06,739 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-11-20 04:36:06,739 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-11-20 04:36:06,740 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-11-20 04:36:06,740 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-11-20 04:36:06,741 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-11-20 04:36:06,741 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-11-20 04:36:06,741 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-20 04:36:06,742 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-20 04:36:06,742 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-20 04:36:06,743 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_7c3bc10d-829f-4c06-b3d1-25247d6a7bb2/bin/uautomizer/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf [2019-11-20 04:36:06,755 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-20 04:36:06,755 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-20 04:36:06,756 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-11-20 04:36:06,756 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-11-20 04:36:06,757 INFO L138 SettingsManager]: * Use SBE=true [2019-11-20 04:36:06,757 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-20 04:36:06,757 INFO L138 SettingsManager]: * sizeof long=4 [2019-11-20 04:36:06,757 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2019-11-20 04:36:06,757 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-11-20 04:36:06,757 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-11-20 04:36:06,758 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-20 04:36:06,758 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2019-11-20 04:36:06,758 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2019-11-20 04:36:06,758 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2019-11-20 04:36:06,758 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-11-20 04:36:06,758 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2019-11-20 04:36:06,759 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2019-11-20 04:36:06,759 INFO L138 SettingsManager]: * sizeof long double=12 [2019-11-20 04:36:06,759 INFO L138 SettingsManager]: * Use constant arrays=true [2019-11-20 04:36:06,759 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-20 04:36:06,759 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-11-20 04:36:06,760 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-11-20 04:36:06,760 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-11-20 04:36:06,760 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-20 04:36:06,760 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-20 04:36:06,760 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-11-20 04:36:06,761 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2019-11-20 04:36:06,761 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --rewrite-divk --print-success --lang smt [2019-11-20 04:36:06,761 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-11-20 04:36:06,761 INFO L138 SettingsManager]: * Logic for external solver=AUFBV 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_7c3bc10d-829f-4c06-b3d1-25247d6a7bb2/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 -> 41f0468d692f5518317d4661ccff168131d2a4eb [2019-11-20 04:36:06,916 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-20 04:36:06,928 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-20 04:36:06,934 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-20 04:36:06,941 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-20 04:36:06,942 INFO L275 PluginConnector]: CDTParser initialized [2019-11-20 04:36:06,943 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_7c3bc10d-829f-4c06-b3d1-25247d6a7bb2/bin/uautomizer/../../sv-benchmarks/c/array-memsafety/cstrncpy_unsafe.c [2019-11-20 04:36:06,998 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_7c3bc10d-829f-4c06-b3d1-25247d6a7bb2/bin/uautomizer/data/1e6fe1127/6d5490329ccc45aca59ceb5ea92f25fb/FLAG3012aec26 [2019-11-20 04:36:07,406 INFO L306 CDTParser]: Found 1 translation units. [2019-11-20 04:36:07,406 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_7c3bc10d-829f-4c06-b3d1-25247d6a7bb2/sv-benchmarks/c/array-memsafety/cstrncpy_unsafe.c [2019-11-20 04:36:07,413 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_7c3bc10d-829f-4c06-b3d1-25247d6a7bb2/bin/uautomizer/data/1e6fe1127/6d5490329ccc45aca59ceb5ea92f25fb/FLAG3012aec26 [2019-11-20 04:36:07,428 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_7c3bc10d-829f-4c06-b3d1-25247d6a7bb2/bin/uautomizer/data/1e6fe1127/6d5490329ccc45aca59ceb5ea92f25fb [2019-11-20 04:36:07,431 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-20 04:36:07,432 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2019-11-20 04:36:07,435 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-20 04:36:07,435 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-20 04:36:07,440 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-20 04:36:07,441 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 04:36:07" (1/1) ... [2019-11-20 04:36:07,443 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@31149b7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 04:36:07, skipping insertion in model container [2019-11-20 04:36:07,444 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 04:36:07" (1/1) ... [2019-11-20 04:36:07,451 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-11-20 04:36:07,471 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-11-20 04:36:07,629 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-20 04:36:07,701 INFO L188 MainTranslator]: Completed pre-run [2019-11-20 04:36:07,717 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-20 04:36:07,731 INFO L192 MainTranslator]: Completed translation [2019-11-20 04:36:07,732 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 04:36:07 WrapperNode [2019-11-20 04:36:07,732 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-20 04:36:07,733 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-20 04:36:07,733 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-20 04:36:07,733 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-20 04:36:07,746 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 04:36:07" (1/1) ... [2019-11-20 04:36:07,746 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 04:36:07" (1/1) ... [2019-11-20 04:36:07,756 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 04:36:07" (1/1) ... [2019-11-20 04:36:07,756 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 04:36:07" (1/1) ... [2019-11-20 04:36:07,771 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 04:36:07" (1/1) ... [2019-11-20 04:36:07,775 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 04:36:07" (1/1) ... [2019-11-20 04:36:07,783 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 04:36:07" (1/1) ... [2019-11-20 04:36:07,785 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-20 04:36:07,786 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-20 04:36:07,786 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-20 04:36:07,786 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-20 04:36:07,787 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 04:36:07" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_7c3bc10d-829f-4c06-b3d1-25247d6a7bb2/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 [2019-11-20 04:36:07,839 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-11-20 04:36:07,839 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-20 04:36:07,840 INFO L138 BoogieDeclarations]: Found implementation of procedure cstrncpy [2019-11-20 04:36:07,840 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-11-20 04:36:07,840 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-11-20 04:36:07,841 INFO L130 BoogieDeclarations]: Found specification of procedure cstrncpy [2019-11-20 04:36:07,841 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1 [2019-11-20 04:36:07,842 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE1 [2019-11-20 04:36:07,842 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-11-20 04:36:07,842 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-11-20 04:36:07,843 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-20 04:36:07,843 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-11-20 04:36:08,272 INFO L280 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-20 04:36:08,273 INFO L285 CfgBuilder]: Removed 2 assume(true) statements. [2019-11-20 04:36:08,274 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 04:36:08 BoogieIcfgContainer [2019-11-20 04:36:08,274 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-20 04:36:08,275 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-11-20 04:36:08,275 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-11-20 04:36:08,278 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-11-20 04:36:08,278 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.11 04:36:07" (1/3) ... [2019-11-20 04:36:08,279 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@52fe2d80 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 04:36:08, skipping insertion in model container [2019-11-20 04:36:08,279 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 04:36:07" (2/3) ... [2019-11-20 04:36:08,279 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@52fe2d80 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 04:36:08, skipping insertion in model container [2019-11-20 04:36:08,280 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 04:36:08" (3/3) ... [2019-11-20 04:36:08,281 INFO L109 eAbstractionObserver]: Analyzing ICFG cstrncpy_unsafe.c [2019-11-20 04:36:08,290 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-11-20 04:36:08,297 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 7 error locations. [2019-11-20 04:36:08,307 INFO L249 AbstractCegarLoop]: Starting to check reachability of 7 error locations. [2019-11-20 04:36:08,323 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-11-20 04:36:08,323 INFO L374 AbstractCegarLoop]: Hoare is false [2019-11-20 04:36:08,323 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-11-20 04:36:08,323 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-20 04:36:08,323 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-20 04:36:08,324 INFO L378 AbstractCegarLoop]: Difference is false [2019-11-20 04:36:08,324 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-20 04:36:08,324 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-11-20 04:36:08,336 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states. [2019-11-20 04:36:08,345 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2019-11-20 04:36:08,345 INFO L402 BasicCegarLoop]: Found error trace [2019-11-20 04:36:08,346 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-20 04:36:08,346 INFO L410 AbstractCegarLoop]: === Iteration 1 === [cstrncpyErr0REQUIRES_VIOLATION, cstrncpyErr5REQUIRES_VIOLATION, cstrncpyErr1REQUIRES_VIOLATION, cstrncpyErr3REQUIRES_VIOLATION, cstrncpyErr2REQUIRES_VIOLATION, cstrncpyErr4REQUIRES_VIOLATION, mainErr0ENSURES_VIOLATIONMEMORY_LEAK]=== [2019-11-20 04:36:08,352 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 04:36:08,352 INFO L82 PathProgramCache]: Analyzing trace with hash 1937036803, now seen corresponding path program 1 times [2019-11-20 04:36:08,363 INFO L163 FreeRefinementEngine]: Executing refinement strategy WOLF [2019-11-20 04:36:08,363 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleCvc4 [279934886] [2019-11-20 04:36:08,363 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_7c3bc10d-829f-4c06-b3d1-25247d6a7bb2/bin/uautomizer/cvc4 Starting monitored process 2 with cvc4 --incremental --print-success --lang smt --rewrite-divk (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-11-20 04:36:08,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-20 04:36:08,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-20 04:36:08,576 INFO L174 FreeRefinementEngine]: Strategy WOLF found a feasible trace [2019-11-20 04:36:08,577 INFO L475 BasicCegarLoop]: Counterexample might be feasible [2019-11-20 04:36:08,785 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-11-20 04:36:08,805 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 20.11 04:36:08 BoogieIcfgContainer [2019-11-20 04:36:08,806 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-11-20 04:36:08,806 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-11-20 04:36:08,806 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-11-20 04:36:08,807 INFO L275 PluginConnector]: Witness Printer initialized [2019-11-20 04:36:08,807 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 04:36:08" (3/4) ... [2019-11-20 04:36:08,809 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2019-11-20 04:36:08,848 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_7c3bc10d-829f-4c06-b3d1-25247d6a7bb2/bin/uautomizer/witness.graphml [2019-11-20 04:36:08,848 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-11-20 04:36:08,850 INFO L168 Benchmark]: Toolchain (without parser) took 1417.31 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 140.0 MB). Free memory was 944.7 MB in the beginning and 1.1 GB in the end (delta: -139.1 MB). Peak memory consumption was 931.0 kB. Max. memory is 11.5 GB. [2019-11-20 04:36:08,850 INFO L168 Benchmark]: CDTParser took 0.55 ms. Allocated memory is still 1.0 GB. Free memory is still 967.5 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-20 04:36:08,851 INFO L168 Benchmark]: CACSL2BoogieTranslator took 297.69 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 140.0 MB). Free memory was 944.7 MB in the beginning and 1.1 GB in the end (delta: -190.1 MB). Peak memory consumption was 23.2 MB. Max. memory is 11.5 GB. [2019-11-20 04:36:08,851 INFO L168 Benchmark]: Boogie Preprocessor took 52.43 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-20 04:36:08,852 INFO L168 Benchmark]: RCFGBuilder took 488.55 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 25.1 MB). Peak memory consumption was 25.1 MB. Max. memory is 11.5 GB. [2019-11-20 04:36:08,853 INFO L168 Benchmark]: TraceAbstraction took 530.97 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 20.6 MB). Peak memory consumption was 20.6 MB. Max. memory is 11.5 GB. [2019-11-20 04:36:08,853 INFO L168 Benchmark]: Witness Printer took 41.95 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 5.4 MB). Peak memory consumption was 5.4 MB. Max. memory is 11.5 GB. [2019-11-20 04:36:08,856 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.55 ms. Allocated memory is still 1.0 GB. Free memory is still 967.5 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 297.69 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 140.0 MB). Free memory was 944.7 MB in the beginning and 1.1 GB in the end (delta: -190.1 MB). Peak memory consumption was 23.2 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 52.43 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. * RCFGBuilder took 488.55 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 25.1 MB). Peak memory consumption was 25.1 MB. Max. memory is 11.5 GB. * TraceAbstraction took 530.97 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 20.6 MB). Peak memory consumption was 20.6 MB. Max. memory is 11.5 GB. * Witness Printer took 41.95 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 5.4 MB). Peak memory consumption was 5.4 MB. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 12]: pointer dereference may fail pointer dereference may fail We found a FailurePath: [L27] char *s1; [L28] char *s2; [L29] int n = __VERIFIER_nondet_int(); [L30] CALL cstrncpy(s1, s2, n) VAL [\old(n)=1, s1={0:0}, s2={0:0}] [L5] char *dst = s1; [L6] const char *src = s2; [L7] char *us; [L8] int n2; VAL [\old(n)=1, dst={0:0}, n=1, s1={0:0}, s1={0:0}, s2={0:0}, s2={0:0}, src={0:0}] [L10] COND TRUE n > 0 [L11] n-- [L12] dst++ [L12] src++ - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 31 locations, 7 error locations. Result: UNSAFE, OverallTime: 0.4s, 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=31occurred 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, 10 NumberOfCodeBlocks, 10 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...