./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 f470102c Calling Ultimate with: /usr/lib/jvm/java-8-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/run_dir_bfc96466-de80-434b-a41d-9445d8194396/bin/uautomizer/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/run_dir_bfc96466-de80-434b-a41d-9445d8194396/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_bfc96466-de80-434b-a41d-9445d8194396/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_bfc96466-de80-434b-a41d-9445d8194396/bin/uautomizer/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/array-memsafety/cstrcat_unsafe.c -s /tmp/vcloud-vcloud-master/worker/run_dir_bfc96466-de80-434b-a41d-9445d8194396/bin/uautomizer/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_bfc96466-de80-434b-a41d-9445d8194396/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 --- This is Ultimate 0.1.25-f470102 [2019-12-07 17:38:15,237 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-12-07 17:38:15,238 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-12-07 17:38:15,245 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-12-07 17:38:15,245 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-12-07 17:38:15,246 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-12-07 17:38:15,247 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-12-07 17:38:15,248 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-12-07 17:38:15,249 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-12-07 17:38:15,250 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-12-07 17:38:15,250 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-12-07 17:38:15,251 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-12-07 17:38:15,251 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-12-07 17:38:15,252 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-12-07 17:38:15,253 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-12-07 17:38:15,254 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-12-07 17:38:15,254 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-12-07 17:38:15,255 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-12-07 17:38:15,256 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-12-07 17:38:15,258 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-12-07 17:38:15,259 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-12-07 17:38:15,259 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-12-07 17:38:15,260 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-12-07 17:38:15,261 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-12-07 17:38:15,262 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-12-07 17:38:15,262 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-12-07 17:38:15,263 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-12-07 17:38:15,263 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-12-07 17:38:15,263 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-12-07 17:38:15,264 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-12-07 17:38:15,264 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-12-07 17:38:15,264 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-12-07 17:38:15,265 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-12-07 17:38:15,265 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-12-07 17:38:15,266 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-12-07 17:38:15,266 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-12-07 17:38:15,266 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-12-07 17:38:15,267 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-12-07 17:38:15,267 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-12-07 17:38:15,267 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-12-07 17:38:15,268 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-12-07 17:38:15,268 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_bfc96466-de80-434b-a41d-9445d8194396/bin/uautomizer/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2019-12-07 17:38:15,278 INFO L113 SettingsManager]: Loading preferences was successful [2019-12-07 17:38:15,278 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-12-07 17:38:15,279 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-12-07 17:38:15,279 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-12-07 17:38:15,279 INFO L138 SettingsManager]: * Use SBE=true [2019-12-07 17:38:15,279 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-12-07 17:38:15,279 INFO L138 SettingsManager]: * sizeof long=4 [2019-12-07 17:38:15,279 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2019-12-07 17:38:15,280 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-12-07 17:38:15,280 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-12-07 17:38:15,280 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-12-07 17:38:15,280 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2019-12-07 17:38:15,280 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2019-12-07 17:38:15,280 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2019-12-07 17:38:15,280 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-12-07 17:38:15,280 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2019-12-07 17:38:15,281 INFO L138 SettingsManager]: * sizeof long double=12 [2019-12-07 17:38:15,281 INFO L138 SettingsManager]: * Use constant arrays=true [2019-12-07 17:38:15,281 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-12-07 17:38:15,281 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-12-07 17:38:15,281 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-12-07 17:38:15,281 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-12-07 17:38:15,281 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-12-07 17:38:15,282 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-12-07 17:38:15,282 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-12-07 17:38:15,282 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-12-07 17:38:15,282 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-12-07 17:38:15,282 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2019-12-07 17:38:15,282 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_bfc96466-de80-434b-a41d-9445d8194396/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 [2019-12-07 17:38:15,380 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-12-07 17:38:15,390 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-12-07 17:38:15,393 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-12-07 17:38:15,394 INFO L271 PluginConnector]: Initializing CDTParser... [2019-12-07 17:38:15,394 INFO L275 PluginConnector]: CDTParser initialized [2019-12-07 17:38:15,394 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_bfc96466-de80-434b-a41d-9445d8194396/bin/uautomizer/../../sv-benchmarks/c/array-memsafety/cstrcat_unsafe.c [2019-12-07 17:38:15,439 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_bfc96466-de80-434b-a41d-9445d8194396/bin/uautomizer/data/21bc2159e/5c63ea963e2c4da79fe6b4feae37a87d/FLAG4054d811d [2019-12-07 17:38:15,797 INFO L306 CDTParser]: Found 1 translation units. [2019-12-07 17:38:15,798 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_bfc96466-de80-434b-a41d-9445d8194396/sv-benchmarks/c/array-memsafety/cstrcat_unsafe.c [2019-12-07 17:38:15,802 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_bfc96466-de80-434b-a41d-9445d8194396/bin/uautomizer/data/21bc2159e/5c63ea963e2c4da79fe6b4feae37a87d/FLAG4054d811d [2019-12-07 17:38:16,211 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_bfc96466-de80-434b-a41d-9445d8194396/bin/uautomizer/data/21bc2159e/5c63ea963e2c4da79fe6b4feae37a87d [2019-12-07 17:38:16,214 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-12-07 17:38:16,215 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2019-12-07 17:38:16,216 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-12-07 17:38:16,216 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-12-07 17:38:16,219 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-12-07 17:38:16,220 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.12 05:38:16" (1/1) ... [2019-12-07 17:38:16,222 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2b0414ea and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 05:38:16, skipping insertion in model container [2019-12-07 17:38:16,222 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.12 05:38:16" (1/1) ... [2019-12-07 17:38:16,228 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2019-12-07 17:38:16,238 INFO L178 MainTranslator]: Built tables and reachable declarations [2019-12-07 17:38:16,339 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-12-07 17:38:16,345 INFO L203 MainTranslator]: Completed pre-run [2019-12-07 17:38:16,385 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-12-07 17:38:16,395 INFO L208 MainTranslator]: Completed translation [2019-12-07 17:38:16,395 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 05:38:16 WrapperNode [2019-12-07 17:38:16,396 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-12-07 17:38:16,396 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-12-07 17:38:16,396 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-12-07 17:38:16,396 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-12-07 17:38:16,404 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 05:38:16" (1/1) ... [2019-12-07 17:38:16,405 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 05:38:16" (1/1) ... [2019-12-07 17:38:16,409 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 05:38:16" (1/1) ... [2019-12-07 17:38:16,409 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 05:38:16" (1/1) ... [2019-12-07 17:38:16,413 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 05:38:16" (1/1) ... [2019-12-07 17:38:16,415 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 05:38:16" (1/1) ... [2019-12-07 17:38:16,416 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 05:38:16" (1/1) ... [2019-12-07 17:38:16,417 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-12-07 17:38:16,417 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-12-07 17:38:16,418 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-12-07 17:38:16,418 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-12-07 17:38:16,418 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 05:38:16" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_bfc96466-de80-434b-a41d-9445d8194396/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 17:38:16,456 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-12-07 17:38:16,456 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-12-07 17:38:16,457 INFO L138 BoogieDeclarations]: Found implementation of procedure cstrcat [2019-12-07 17:38:16,457 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-12-07 17:38:16,457 INFO L130 BoogieDeclarations]: Found specification of procedure cstrcat [2019-12-07 17:38:16,457 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-12-07 17:38:16,457 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-12-07 17:38:16,457 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-12-07 17:38:16,457 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-12-07 17:38:16,457 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-12-07 17:38:16,457 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-12-07 17:38:16,583 INFO L282 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-12-07 17:38:16,584 INFO L287 CfgBuilder]: Removed 2 assume(true) statements. [2019-12-07 17:38:16,584 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.12 05:38:16 BoogieIcfgContainer [2019-12-07 17:38:16,584 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-12-07 17:38:16,585 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-12-07 17:38:16,585 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-12-07 17:38:16,587 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-12-07 17:38:16,587 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.12 05:38:16" (1/3) ... [2019-12-07 17:38:16,588 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5505bde7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.12 05:38:16, skipping insertion in model container [2019-12-07 17:38:16,588 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 05:38:16" (2/3) ... [2019-12-07 17:38:16,588 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5505bde7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.12 05:38:16, skipping insertion in model container [2019-12-07 17:38:16,588 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.12 05:38:16" (3/3) ... [2019-12-07 17:38:16,589 INFO L109 eAbstractionObserver]: Analyzing ICFG cstrcat_unsafe.c [2019-12-07 17:38:16,595 INFO L156 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-12-07 17:38:16,600 INFO L168 ceAbstractionStarter]: Appying trace abstraction to program that has 7 error locations. [2019-12-07 17:38:16,608 INFO L249 AbstractCegarLoop]: Starting to check reachability of 7 error locations. [2019-12-07 17:38:16,620 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-12-07 17:38:16,620 INFO L374 AbstractCegarLoop]: Hoare is false [2019-12-07 17:38:16,620 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-12-07 17:38:16,620 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-12-07 17:38:16,620 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-12-07 17:38:16,620 INFO L378 AbstractCegarLoop]: Difference is false [2019-12-07 17:38:16,620 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-12-07 17:38:16,621 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-12-07 17:38:16,630 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states. [2019-12-07 17:38:16,635 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2019-12-07 17:38:16,635 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 17:38:16,636 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-07 17:38:16,636 INFO L410 AbstractCegarLoop]: === Iteration 1 === [cstrcatErr3REQUIRES_VIOLATION, cstrcatErr2REQUIRES_VIOLATION, cstrcatErr4REQUIRES_VIOLATION, cstrcatErr0REQUIRES_VIOLATION, cstrcatErr5REQUIRES_VIOLATION, cstrcatErr1REQUIRES_VIOLATION, mainErr0ENSURES_VIOLATIONMEMORY_LEAK]=== [2019-12-07 17:38:16,639 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 17:38:16,640 INFO L82 PathProgramCache]: Analyzing trace with hash 543632158, now seen corresponding path program 1 times [2019-12-07 17:38:16,645 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 17:38:16,646 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1211584511] [2019-12-07 17:38:16,646 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 17:38:16,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-07 17:38:16,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-07 17:38:16,729 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-12-07 17:38:16,730 INFO L475 BasicCegarLoop]: Counterexample might be feasible [2019-12-07 17:38:16,744 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 07.12 05:38:16 BoogieIcfgContainer [2019-12-07 17:38:16,744 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-12-07 17:38:16,744 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-12-07 17:38:16,744 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-12-07 17:38:16,744 INFO L275 PluginConnector]: Witness Printer initialized [2019-12-07 17:38:16,745 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.12 05:38:16" (3/4) ... [2019-12-07 17:38:16,746 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2019-12-07 17:38:16,771 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_bfc96466-de80-434b-a41d-9445d8194396/bin/uautomizer/witness.graphml [2019-12-07 17:38:16,771 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-12-07 17:38:16,772 INFO L168 Benchmark]: Toolchain (without parser) took 556.99 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 128.5 MB). Free memory was 943.5 MB in the beginning and 1.1 GB in the end (delta: -146.1 MB). There was no memory consumed. Max. memory is 11.5 GB. [2019-12-07 17:38:16,773 INFO L168 Benchmark]: CDTParser took 0.15 ms. Allocated memory is still 1.0 GB. Free memory is still 958.6 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-12-07 17:38:16,773 INFO L168 Benchmark]: CACSL2BoogieTranslator took 179.91 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 128.5 MB). Free memory was 943.5 MB in the beginning and 1.1 GB in the end (delta: -182.5 MB). Peak memory consumption was 23.2 MB. Max. memory is 11.5 GB. [2019-12-07 17:38:16,774 INFO L168 Benchmark]: Boogie Preprocessor took 21.27 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: 2.7 MB). Peak memory consumption was 2.7 MB. Max. memory is 11.5 GB. [2019-12-07 17:38:16,774 INFO L168 Benchmark]: RCFGBuilder took 167.02 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: 17.6 MB). Peak memory consumption was 17.6 MB. Max. memory is 11.5 GB. [2019-12-07 17:38:16,774 INFO L168 Benchmark]: TraceAbstraction took 158.87 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: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. [2019-12-07 17:38:16,775 INFO L168 Benchmark]: Witness Printer took 26.76 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. [2019-12-07 17:38:16,776 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.15 ms. Allocated memory is still 1.0 GB. Free memory is still 958.6 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 179.91 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 128.5 MB). Free memory was 943.5 MB in the beginning and 1.1 GB in the end (delta: -182.5 MB). Peak memory consumption was 23.2 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 21.27 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: 2.7 MB). Peak memory consumption was 2.7 MB. Max. memory is 11.5 GB. * RCFGBuilder took 167.02 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: 17.6 MB). Peak memory consumption was 17.6 MB. Max. memory is 11.5 GB. * TraceAbstraction took 158.87 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: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. * Witness Printer took 26.76 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={5:6}, s2={8:3}] [L3] char *s = s1; VAL [s={5:6}, s1={5:6}, s1={5:6}, s2={8:3}, s2={8:3}] [L5] \read(*s) - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 29 locations, 7 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=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...