./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/array-memsafety/cstrcat_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_5d6a19ff-1ab1-4ff4-ae4a-7fa03e36cea9/bin/uautomizer/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/run_dir_5d6a19ff-1ab1-4ff4-ae4a-7fa03e36cea9/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_5d6a19ff-1ab1-4ff4-ae4a-7fa03e36cea9/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_5d6a19ff-1ab1-4ff4-ae4a-7fa03e36cea9/bin/uautomizer/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/array-memsafety/cstrcat_unsafe.c -s /tmp/vcloud-vcloud-master/worker/run_dir_5d6a19ff-1ab1-4ff4-ae4a-7fa03e36cea9/bin/uautomizer/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_5d6a19ff-1ab1-4ff4-ae4a-7fa03e36cea9/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 7cd6be6ad7a65db7d2c064e38ccfb241f9d252c5 ................................................................................................................................................................................................................................. 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 08:09:03,220 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-20 08:09:03,222 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-20 08:09:03,233 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-11-20 08:09:03,234 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-11-20 08:09:03,235 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-11-20 08:09:03,236 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-11-20 08:09:03,238 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-11-20 08:09:03,240 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-11-20 08:09:03,241 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-11-20 08:09:03,243 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-11-20 08:09:03,244 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-11-20 08:09:03,244 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-20 08:09:03,245 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-20 08:09:03,246 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-20 08:09:03,248 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-20 08:09:03,249 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-20 08:09:03,250 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-20 08:09:03,252 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-20 08:09:03,254 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-20 08:09:03,256 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-20 08:09:03,257 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-20 08:09:03,258 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-20 08:09:03,259 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-20 08:09:03,262 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-11-20 08:09:03,262 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-11-20 08:09:03,262 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-11-20 08:09:03,263 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-11-20 08:09:03,264 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-11-20 08:09:03,265 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-11-20 08:09:03,265 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-11-20 08:09:03,266 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-11-20 08:09:03,267 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-11-20 08:09:03,268 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-11-20 08:09:03,269 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-11-20 08:09:03,269 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-11-20 08:09:03,270 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-11-20 08:09:03,270 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-11-20 08:09:03,270 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-20 08:09:03,271 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-20 08:09:03,272 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-20 08:09:03,273 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_5d6a19ff-1ab1-4ff4-ae4a-7fa03e36cea9/bin/uautomizer/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf [2019-11-20 08:09:03,288 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-20 08:09:03,291 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-20 08:09:03,293 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-11-20 08:09:03,293 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-11-20 08:09:03,293 INFO L138 SettingsManager]: * Use SBE=true [2019-11-20 08:09:03,294 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-20 08:09:03,294 INFO L138 SettingsManager]: * sizeof long=4 [2019-11-20 08:09:03,294 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2019-11-20 08:09:03,294 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-11-20 08:09:03,295 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-11-20 08:09:03,296 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-20 08:09:03,296 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2019-11-20 08:09:03,296 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2019-11-20 08:09:03,296 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2019-11-20 08:09:03,297 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-11-20 08:09:03,297 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2019-11-20 08:09:03,297 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2019-11-20 08:09:03,297 INFO L138 SettingsManager]: * sizeof long double=12 [2019-11-20 08:09:03,298 INFO L138 SettingsManager]: * Use constant arrays=true [2019-11-20 08:09:03,298 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-20 08:09:03,298 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-11-20 08:09:03,298 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-11-20 08:09:03,299 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-11-20 08:09:03,299 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-20 08:09:03,299 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-20 08:09:03,299 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-11-20 08:09:03,300 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2019-11-20 08:09:03,300 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --rewrite-divk --print-success --lang smt [2019-11-20 08:09:03,300 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-11-20 08:09:03,300 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_5d6a19ff-1ab1-4ff4-ae4a-7fa03e36cea9/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 -> 7cd6be6ad7a65db7d2c064e38ccfb241f9d252c5 [2019-11-20 08:09:03,515 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-20 08:09:03,524 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-20 08:09:03,527 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-20 08:09:03,529 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-20 08:09:03,529 INFO L275 PluginConnector]: CDTParser initialized [2019-11-20 08:09:03,530 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_5d6a19ff-1ab1-4ff4-ae4a-7fa03e36cea9/bin/uautomizer/../../sv-benchmarks/c/array-memsafety/cstrcat_unsafe.c [2019-11-20 08:09:03,585 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_5d6a19ff-1ab1-4ff4-ae4a-7fa03e36cea9/bin/uautomizer/data/8d7869dc5/5c046c8615844b7aa1e8f4543dd0d8fa/FLAG52e772cb0 [2019-11-20 08:09:03,931 INFO L306 CDTParser]: Found 1 translation units. [2019-11-20 08:09:03,932 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_5d6a19ff-1ab1-4ff4-ae4a-7fa03e36cea9/sv-benchmarks/c/array-memsafety/cstrcat_unsafe.c [2019-11-20 08:09:03,937 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_5d6a19ff-1ab1-4ff4-ae4a-7fa03e36cea9/bin/uautomizer/data/8d7869dc5/5c046c8615844b7aa1e8f4543dd0d8fa/FLAG52e772cb0 [2019-11-20 08:09:04,342 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_5d6a19ff-1ab1-4ff4-ae4a-7fa03e36cea9/bin/uautomizer/data/8d7869dc5/5c046c8615844b7aa1e8f4543dd0d8fa [2019-11-20 08:09:04,345 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-20 08:09:04,346 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2019-11-20 08:09:04,349 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-20 08:09:04,361 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-20 08:09:04,365 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-20 08:09:04,365 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 08:09:04" (1/1) ... [2019-11-20 08:09:04,368 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@309c849b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 08:09:04, skipping insertion in model container [2019-11-20 08:09:04,368 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 08:09:04" (1/1) ... [2019-11-20 08:09:04,378 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-11-20 08:09:04,395 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-11-20 08:09:04,544 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-20 08:09:04,567 INFO L188 MainTranslator]: Completed pre-run [2019-11-20 08:09:04,655 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-20 08:09:04,672 INFO L192 MainTranslator]: Completed translation [2019-11-20 08:09:04,674 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 08:09:04 WrapperNode [2019-11-20 08:09:04,674 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-20 08:09:04,675 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-20 08:09:04,675 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-20 08:09:04,675 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-20 08:09:04,688 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 08:09:04" (1/1) ... [2019-11-20 08:09:04,690 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 08:09:04" (1/1) ... [2019-11-20 08:09:04,710 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 08:09:04" (1/1) ... [2019-11-20 08:09:04,711 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 08:09:04" (1/1) ... [2019-11-20 08:09:04,726 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 08:09:04" (1/1) ... [2019-11-20 08:09:04,735 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 08:09:04" (1/1) ... [2019-11-20 08:09:04,741 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 08:09:04" (1/1) ... [2019-11-20 08:09:04,743 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-20 08:09:04,748 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-20 08:09:04,748 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-20 08:09:04,748 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-20 08:09:04,750 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 08:09:04" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_5d6a19ff-1ab1-4ff4-ae4a-7fa03e36cea9/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 08:09:04,827 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-11-20 08:09:04,827 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-20 08:09:04,827 INFO L138 BoogieDeclarations]: Found implementation of procedure cstrcat [2019-11-20 08:09:04,828 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-11-20 08:09:04,828 INFO L130 BoogieDeclarations]: Found specification of procedure cstrcat [2019-11-20 08:09:04,828 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1 [2019-11-20 08:09:04,829 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE1 [2019-11-20 08:09:04,829 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-11-20 08:09:04,829 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-11-20 08:09:04,830 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-20 08:09:04,830 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-11-20 08:09:05,200 INFO L280 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-20 08:09:05,200 INFO L285 CfgBuilder]: Removed 2 assume(true) statements. [2019-11-20 08:09:05,201 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 08:09:05 BoogieIcfgContainer [2019-11-20 08:09:05,201 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-20 08:09:05,202 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-11-20 08:09:05,202 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-11-20 08:09:05,205 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-11-20 08:09:05,205 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.11 08:09:04" (1/3) ... [2019-11-20 08:09:05,211 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@675e9e8e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 08:09:05, skipping insertion in model container [2019-11-20 08:09:05,211 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 08:09:04" (2/3) ... [2019-11-20 08:09:05,211 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@675e9e8e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 08:09:05, skipping insertion in model container [2019-11-20 08:09:05,211 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 08:09:05" (3/3) ... [2019-11-20 08:09:05,213 INFO L109 eAbstractionObserver]: Analyzing ICFG cstrcat_unsafe.c [2019-11-20 08:09:05,221 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-11-20 08:09:05,227 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 7 error locations. [2019-11-20 08:09:05,238 INFO L249 AbstractCegarLoop]: Starting to check reachability of 7 error locations. [2019-11-20 08:09:05,257 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-11-20 08:09:05,257 INFO L374 AbstractCegarLoop]: Hoare is false [2019-11-20 08:09:05,257 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-11-20 08:09:05,258 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-20 08:09:05,258 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-20 08:09:05,258 INFO L378 AbstractCegarLoop]: Difference is false [2019-11-20 08:09:05,258 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-20 08:09:05,258 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-11-20 08:09:05,271 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states. [2019-11-20 08:09:05,280 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2019-11-20 08:09:05,280 INFO L402 BasicCegarLoop]: Found error trace [2019-11-20 08:09:05,281 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-20 08:09:05,282 INFO L410 AbstractCegarLoop]: === Iteration 1 === [cstrcatErr3REQUIRES_VIOLATION, cstrcatErr2REQUIRES_VIOLATION, cstrcatErr4REQUIRES_VIOLATION, cstrcatErr0REQUIRES_VIOLATION, cstrcatErr5REQUIRES_VIOLATION, cstrcatErr1REQUIRES_VIOLATION, mainErr0ENSURES_VIOLATIONMEMORY_LEAK]=== [2019-11-20 08:09:05,287 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 08:09:05,287 INFO L82 PathProgramCache]: Analyzing trace with hash 543632158, now seen corresponding path program 1 times [2019-11-20 08:09:05,297 INFO L163 FreeRefinementEngine]: Executing refinement strategy WOLF [2019-11-20 08:09:05,298 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleCvc4 [64982173] [2019-11-20 08:09:05,298 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_5d6a19ff-1ab1-4ff4-ae4a-7fa03e36cea9/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 08:09:05,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-20 08:09:05,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-20 08:09:05,481 INFO L174 FreeRefinementEngine]: Strategy WOLF found a feasible trace [2019-11-20 08:09:05,482 INFO L475 BasicCegarLoop]: Counterexample might be feasible [2019-11-20 08:09:05,684 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-11-20 08:09:05,705 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 20.11 08:09:05 BoogieIcfgContainer [2019-11-20 08:09:05,705 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-11-20 08:09:05,706 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-11-20 08:09:05,706 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-11-20 08:09:05,706 INFO L275 PluginConnector]: Witness Printer initialized [2019-11-20 08:09:05,706 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 08:09:05" (3/4) ... [2019-11-20 08:09:05,708 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2019-11-20 08:09:05,744 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_5d6a19ff-1ab1-4ff4-ae4a-7fa03e36cea9/bin/uautomizer/witness.graphml [2019-11-20 08:09:05,745 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-11-20 08:09:05,747 INFO L168 Benchmark]: Toolchain (without parser) took 1399.90 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 140.0 MB). Free memory was 950.2 MB in the beginning and 1.1 GB in the end (delta: -138.8 MB). Peak memory consumption was 1.2 MB. Max. memory is 11.5 GB. [2019-11-20 08:09:05,747 INFO L168 Benchmark]: CDTParser took 0.26 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. [2019-11-20 08:09:05,748 INFO L168 Benchmark]: CACSL2BoogieTranslator took 324.98 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 140.0 MB). Free memory was 950.2 MB in the beginning and 1.1 GB in the end (delta: -183.1 MB). Peak memory consumption was 23.5 MB. Max. memory is 11.5 GB. [2019-11-20 08:09:05,748 INFO L168 Benchmark]: Boogie Preprocessor took 72.91 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 08:09:05,749 INFO L168 Benchmark]: RCFGBuilder took 453.33 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: 22.4 MB). Peak memory consumption was 22.4 MB. Max. memory is 11.5 GB. [2019-11-20 08:09:05,749 INFO L168 Benchmark]: TraceAbstraction took 502.98 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: 21.9 MB). Peak memory consumption was 21.9 MB. Max. memory is 11.5 GB. [2019-11-20 08:09:05,750 INFO L168 Benchmark]: Witness Printer took 39.18 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 08:09:05,752 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.26 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 324.98 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 140.0 MB). Free memory was 950.2 MB in the beginning and 1.1 GB in the end (delta: -183.1 MB). Peak memory consumption was 23.5 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 72.91 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 453.33 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: 22.4 MB). Peak memory consumption was 22.4 MB. Max. memory is 11.5 GB. * TraceAbstraction took 502.98 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: 21.9 MB). Peak memory consumption was 21.9 MB. Max. memory is 11.5 GB. * Witness Printer took 39.18 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: 5]: pointer dereference may fail pointer dereference may fail We found a FailurePath: [L15] char *s1; [L16] char *s2; [L17] CALL cstrcat(s1, s2) VAL [s1={0:0}, s2={0:0}] [L3] char *s = s1; VAL [s={0:0}, s1={0:0}, s1={0:0}, s2={0:0}, s2={0:0}] [L5] \read(*s) - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 29 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=29occurred 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...