./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 cad46833 Calling Ultimate with: /usr/lib/jvm/java-8-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/run_dir_5f2bb8cb-7289-4793-a7c0-d42940e1f0b1/bin/uautomizer/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/run_dir_5f2bb8cb-7289-4793-a7c0-d42940e1f0b1/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_5f2bb8cb-7289-4793-a7c0-d42940e1f0b1/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_5f2bb8cb-7289-4793-a7c0-d42940e1f0b1/bin/uautomizer/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/array-memsafety/cstrncat_unsafe.c -s /tmp/vcloud-vcloud-master/worker/run_dir_5f2bb8cb-7289-4793-a7c0-d42940e1f0b1/bin/uautomizer/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_5f2bb8cb-7289-4793-a7c0-d42940e1f0b1/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 0.1.24-cad4683 [2019-11-15 21:29:05,068 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-15 21:29:05,070 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-15 21:29:05,080 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-11-15 21:29:05,080 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-11-15 21:29:05,081 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-11-15 21:29:05,082 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-11-15 21:29:05,084 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-11-15 21:29:05,086 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-11-15 21:29:05,087 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-11-15 21:29:05,088 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-11-15 21:29:05,089 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-11-15 21:29:05,090 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-15 21:29:05,090 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-15 21:29:05,091 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-15 21:29:05,092 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-15 21:29:05,093 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-15 21:29:05,094 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-15 21:29:05,096 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-15 21:29:05,098 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-15 21:29:05,099 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-15 21:29:05,100 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-15 21:29:05,101 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-15 21:29:05,102 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-15 21:29:05,105 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-11-15 21:29:05,105 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-11-15 21:29:05,105 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-11-15 21:29:05,106 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-11-15 21:29:05,107 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-11-15 21:29:05,108 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-11-15 21:29:05,108 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-11-15 21:29:05,109 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-11-15 21:29:05,110 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-11-15 21:29:05,110 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-11-15 21:29:05,111 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-11-15 21:29:05,112 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-11-15 21:29:05,112 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-11-15 21:29:05,113 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-11-15 21:29:05,113 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-15 21:29:05,114 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-15 21:29:05,115 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-15 21:29:05,116 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_5f2bb8cb-7289-4793-a7c0-d42940e1f0b1/bin/uautomizer/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2019-11-15 21:29:05,129 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-15 21:29:05,129 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-15 21:29:05,130 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-11-15 21:29:05,130 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-11-15 21:29:05,131 INFO L138 SettingsManager]: * Use SBE=true [2019-11-15 21:29:05,131 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-15 21:29:05,131 INFO L138 SettingsManager]: * sizeof long=4 [2019-11-15 21:29:05,131 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2019-11-15 21:29:05,132 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-11-15 21:29:05,132 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-11-15 21:29:05,132 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-15 21:29:05,132 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2019-11-15 21:29:05,133 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2019-11-15 21:29:05,133 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2019-11-15 21:29:05,133 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-11-15 21:29:05,133 INFO L138 SettingsManager]: * sizeof long double=12 [2019-11-15 21:29:05,133 INFO L138 SettingsManager]: * Use constant arrays=true [2019-11-15 21:29:05,134 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-15 21:29:05,134 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-11-15 21:29:05,134 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-11-15 21:29:05,134 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-11-15 21:29:05,135 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-15 21:29:05,135 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-15 21:29:05,135 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-11-15 21:29:05,136 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-11-15 21:29:05,136 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-11-15 21:29:05,136 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_5f2bb8cb-7289-4793-a7c0-d42940e1f0b1/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 [2019-11-15 21:29:05,162 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-15 21:29:05,172 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-15 21:29:05,175 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-15 21:29:05,176 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-15 21:29:05,177 INFO L275 PluginConnector]: CDTParser initialized [2019-11-15 21:29:05,177 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_5f2bb8cb-7289-4793-a7c0-d42940e1f0b1/bin/uautomizer/../../sv-benchmarks/c/array-memsafety/cstrncat_unsafe.c [2019-11-15 21:29:05,230 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_5f2bb8cb-7289-4793-a7c0-d42940e1f0b1/bin/uautomizer/data/85e8a0f91/5ff8e541facf4de7a449d8cac41f8543/FLAG68ff1d4b7 [2019-11-15 21:29:05,623 INFO L306 CDTParser]: Found 1 translation units. [2019-11-15 21:29:05,624 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_5f2bb8cb-7289-4793-a7c0-d42940e1f0b1/sv-benchmarks/c/array-memsafety/cstrncat_unsafe.c [2019-11-15 21:29:05,630 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_5f2bb8cb-7289-4793-a7c0-d42940e1f0b1/bin/uautomizer/data/85e8a0f91/5ff8e541facf4de7a449d8cac41f8543/FLAG68ff1d4b7 [2019-11-15 21:29:05,646 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_5f2bb8cb-7289-4793-a7c0-d42940e1f0b1/bin/uautomizer/data/85e8a0f91/5ff8e541facf4de7a449d8cac41f8543 [2019-11-15 21:29:05,649 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-15 21:29:05,650 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2019-11-15 21:29:05,652 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-15 21:29:05,652 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-15 21:29:05,656 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-15 21:29:05,656 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.11 09:29:05" (1/1) ... [2019-11-15 21:29:05,659 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@660e3178 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 09:29:05, skipping insertion in model container [2019-11-15 21:29:05,660 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.11 09:29:05" (1/1) ... [2019-11-15 21:29:05,666 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-11-15 21:29:05,683 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-11-15 21:29:05,901 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-15 21:29:05,911 INFO L188 MainTranslator]: Completed pre-run [2019-11-15 21:29:05,926 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-15 21:29:05,936 INFO L192 MainTranslator]: Completed translation [2019-11-15 21:29:05,937 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 09:29:05 WrapperNode [2019-11-15 21:29:05,937 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-15 21:29:05,937 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-15 21:29:05,938 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-15 21:29:05,938 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-15 21:29:05,950 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 09:29:05" (1/1) ... [2019-11-15 21:29:05,950 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 09:29:05" (1/1) ... [2019-11-15 21:29:05,957 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 09:29:05" (1/1) ... [2019-11-15 21:29:05,957 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 09:29:05" (1/1) ... [2019-11-15 21:29:05,963 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 09:29:05" (1/1) ... [2019-11-15 21:29:05,966 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 09:29:05" (1/1) ... [2019-11-15 21:29:05,967 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 09:29:05" (1/1) ... [2019-11-15 21:29:05,969 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-15 21:29:05,970 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-15 21:29:05,970 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-15 21:29:05,970 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-15 21:29:05,971 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 09:29:05" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_5f2bb8cb-7289-4793-a7c0-d42940e1f0b1/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 [2019-11-15 21:29:06,019 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-11-15 21:29:06,019 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-15 21:29:06,019 INFO L138 BoogieDeclarations]: Found implementation of procedure cstrncat [2019-11-15 21:29:06,020 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-11-15 21:29:06,020 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-11-15 21:29:06,020 INFO L130 BoogieDeclarations]: Found specification of procedure cstrncat [2019-11-15 21:29:06,021 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-11-15 21:29:06,021 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-11-15 21:29:06,021 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-11-15 21:29:06,021 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-11-15 21:29:06,021 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-15 21:29:06,021 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-11-15 21:29:06,264 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-15 21:29:06,264 INFO L284 CfgBuilder]: Removed 2 assume(true) statements. [2019-11-15 21:29:06,265 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.11 09:29:06 BoogieIcfgContainer [2019-11-15 21:29:06,265 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-15 21:29:06,266 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-11-15 21:29:06,266 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-11-15 21:29:06,269 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-11-15 21:29:06,269 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 15.11 09:29:05" (1/3) ... [2019-11-15 21:29:06,270 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@dec1265 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.11 09:29:06, skipping insertion in model container [2019-11-15 21:29:06,270 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 09:29:05" (2/3) ... [2019-11-15 21:29:06,271 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@dec1265 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.11 09:29:06, skipping insertion in model container [2019-11-15 21:29:06,271 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.11 09:29:06" (3/3) ... [2019-11-15 21:29:06,272 INFO L109 eAbstractionObserver]: Analyzing ICFG cstrncat_unsafe.c [2019-11-15 21:29:06,281 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-11-15 21:29:06,305 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 11 error locations. [2019-11-15 21:29:06,334 INFO L249 AbstractCegarLoop]: Starting to check reachability of 11 error locations. [2019-11-15 21:29:06,352 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-11-15 21:29:06,352 INFO L374 AbstractCegarLoop]: Hoare is false [2019-11-15 21:29:06,352 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-11-15 21:29:06,352 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-15 21:29:06,352 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-15 21:29:06,353 INFO L378 AbstractCegarLoop]: Difference is false [2019-11-15 21:29:06,353 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-15 21:29:06,353 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-11-15 21:29:06,367 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states. [2019-11-15 21:29:06,381 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2019-11-15 21:29:06,386 INFO L372 BasicCegarLoop]: Found error trace [2019-11-15 21:29:06,388 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-15 21:29:06,390 INFO L410 AbstractCegarLoop]: === Iteration 1 === [mainErr0ENSURES_VIOLATIONMEMORY_LEAK, cstrncatErr1REQUIRES_VIOLATION, cstrncatErr2REQUIRES_VIOLATION, cstrncatErr7REQUIRES_VIOLATION, cstrncatErr5REQUIRES_VIOLATION, cstrncatErr0REQUIRES_VIOLATION, cstrncatErr6REQUIRES_VIOLATION, cstrncatErr4REQUIRES_VIOLATION, cstrncatErr9REQUIRES_VIOLATION, cstrncatErr8REQUIRES_VIOLATION, cstrncatErr3REQUIRES_VIOLATION]=== [2019-11-15 21:29:06,395 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-15 21:29:06,395 INFO L82 PathProgramCache]: Analyzing trace with hash 1122182536, now seen corresponding path program 1 times [2019-11-15 21:29:06,403 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-11-15 21:29:06,403 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1446258619] [2019-11-15 21:29:06,404 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 21:29:06,404 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 21:29:06,404 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-15 21:29:06,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-15 21:29:06,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-15 21:29:06,511 INFO L168 tionRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-15 21:29:06,512 INFO L445 BasicCegarLoop]: Counterexample might be feasible [2019-11-15 21:29:06,529 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 15.11 09:29:06 BoogieIcfgContainer [2019-11-15 21:29:06,529 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-11-15 21:29:06,529 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-11-15 21:29:06,530 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-11-15 21:29:06,530 INFO L275 PluginConnector]: Witness Printer initialized [2019-11-15 21:29:06,530 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.11 09:29:06" (3/4) ... [2019-11-15 21:29:06,532 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2019-11-15 21:29:06,565 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_5f2bb8cb-7289-4793-a7c0-d42940e1f0b1/bin/uautomizer/witness.graphml [2019-11-15 21:29:06,565 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-11-15 21:29:06,567 INFO L168 Benchmark]: Toolchain (without parser) took 916.49 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 152.0 MB). Free memory was 946.2 MB in the beginning and 1.1 GB in the end (delta: -160.7 MB). There was no memory consumed. Max. memory is 11.5 GB. [2019-11-15 21:29:06,567 INFO L168 Benchmark]: CDTParser took 0.23 ms. Allocated memory is still 1.0 GB. Free memory is still 967.6 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-15 21:29:06,568 INFO L168 Benchmark]: CACSL2BoogieTranslator took 284.92 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 152.0 MB). Free memory was 946.2 MB in the beginning and 1.1 GB in the end (delta: -200.7 MB). Peak memory consumption was 24.5 MB. Max. memory is 11.5 GB. [2019-11-15 21:29:06,569 INFO L168 Benchmark]: Boogie Preprocessor took 31.92 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. [2019-11-15 21:29:06,569 INFO L168 Benchmark]: RCFGBuilder took 295.66 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: 23.9 MB). Peak memory consumption was 23.9 MB. Max. memory is 11.5 GB. [2019-11-15 21:29:06,570 INFO L168 Benchmark]: TraceAbstraction took 263.16 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: 16.1 MB). Peak memory consumption was 16.1 MB. Max. memory is 11.5 GB. [2019-11-15 21:29:06,570 INFO L168 Benchmark]: Witness Printer took 35.93 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. [2019-11-15 21:29:06,573 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.23 ms. Allocated memory is still 1.0 GB. Free memory is still 967.6 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 284.92 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 152.0 MB). Free memory was 946.2 MB in the beginning and 1.1 GB in the end (delta: -200.7 MB). Peak memory consumption was 24.5 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 31.92 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 295.66 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: 23.9 MB). Peak memory consumption was 23.9 MB. Max. memory is 11.5 GB. * TraceAbstraction took 263.16 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: 16.1 MB). Peak memory consumption was 16.1 MB. Max. memory is 11.5 GB. * Witness Printer took 35.93 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. * 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...