./Ultimate.py --spec ../../sv-benchmarks/c/MemSafety.prp --file ../../sv-benchmarks/c/memsafety-ext3/scopes4_false-valid-deref.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 1dbac8bc Calling Ultimate with: java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/working_dir_8ed9c883-94d4-447a-a95d-17c6ea0aab37/bin-2019/uautomizer/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/working_dir_8ed9c883-94d4-447a-a95d-17c6ea0aab37/bin-2019/uautomizer/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/working_dir_8ed9c883-94d4-447a-a95d-17c6ea0aab37/bin-2019/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/working_dir_8ed9c883-94d4-447a-a95d-17c6ea0aab37/bin-2019/uautomizer/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/memsafety-ext3/scopes4_false-valid-deref.c -s /tmp/vcloud-vcloud-master/worker/working_dir_8ed9c883-94d4-447a-a95d-17c6ea0aab37/bin-2019/uautomizer/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/working_dir_8ed9c883-94d4-447a-a95d-17c6ea0aab37/bin-2019/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 25981771a012eec333f97d8302486eae22970d9e .............................................................................................................................................................................................................................................................................................................................. 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 0.1.23-1dbac8b [2018-11-10 08:51:37,348 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-11-10 08:51:37,349 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-11-10 08:51:37,356 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-11-10 08:51:37,356 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-11-10 08:51:37,357 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-11-10 08:51:37,358 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-11-10 08:51:37,359 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-11-10 08:51:37,360 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-11-10 08:51:37,361 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-11-10 08:51:37,361 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-11-10 08:51:37,362 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-11-10 08:51:37,362 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-11-10 08:51:37,363 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-11-10 08:51:37,364 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-11-10 08:51:37,364 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-11-10 08:51:37,365 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-11-10 08:51:37,366 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-11-10 08:51:37,368 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-11-10 08:51:37,369 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-11-10 08:51:37,369 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-11-10 08:51:37,370 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-11-10 08:51:37,372 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-11-10 08:51:37,372 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-11-10 08:51:37,372 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-11-10 08:51:37,373 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-11-10 08:51:37,373 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-11-10 08:51:37,374 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-11-10 08:51:37,375 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-11-10 08:51:37,375 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-11-10 08:51:37,375 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-11-10 08:51:37,376 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-11-10 08:51:37,376 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-11-10 08:51:37,376 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-11-10 08:51:37,377 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-11-10 08:51:37,377 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-11-10 08:51:37,378 INFO L98 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/working_dir_8ed9c883-94d4-447a-a95d-17c6ea0aab37/bin-2019/uautomizer/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2018-11-10 08:51:37,387 INFO L110 SettingsManager]: Loading preferences was successful [2018-11-10 08:51:37,388 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-11-10 08:51:37,388 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-11-10 08:51:37,389 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-11-10 08:51:37,389 INFO L133 SettingsManager]: * Use SBE=true [2018-11-10 08:51:37,389 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-11-10 08:51:37,389 INFO L133 SettingsManager]: * sizeof long=4 [2018-11-10 08:51:37,389 INFO L133 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2018-11-10 08:51:37,389 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-11-10 08:51:37,389 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-11-10 08:51:37,390 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-11-10 08:51:37,390 INFO L133 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2018-11-10 08:51:37,390 INFO L133 SettingsManager]: * Bitprecise bitfields=true [2018-11-10 08:51:37,390 INFO L133 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2018-11-10 08:51:37,390 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-11-10 08:51:37,390 INFO L133 SettingsManager]: * sizeof long double=12 [2018-11-10 08:51:37,390 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-11-10 08:51:37,391 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-11-10 08:51:37,391 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-11-10 08:51:37,391 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-11-10 08:51:37,391 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-11-10 08:51:37,391 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-11-10 08:51:37,391 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-11-10 08:51:37,391 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-11-10 08:51:37,392 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-11-10 08:51:37,392 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in 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/working_dir_8ed9c883-94d4-447a-a95d-17c6ea0aab37/bin-2019/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 -> 25981771a012eec333f97d8302486eae22970d9e [2018-11-10 08:51:37,413 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-11-10 08:51:37,422 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-11-10 08:51:37,424 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-11-10 08:51:37,425 INFO L271 PluginConnector]: Initializing CDTParser... [2018-11-10 08:51:37,426 INFO L276 PluginConnector]: CDTParser initialized [2018-11-10 08:51:37,426 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/working_dir_8ed9c883-94d4-447a-a95d-17c6ea0aab37/bin-2019/uautomizer/../../sv-benchmarks/c/memsafety-ext3/scopes4_false-valid-deref.c [2018-11-10 08:51:37,464 INFO L218 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_8ed9c883-94d4-447a-a95d-17c6ea0aab37/bin-2019/uautomizer/data/8dbcff85c/cfa69be0f91046b7830d3dfa561424a9/FLAG3221f1d2a [2018-11-10 08:51:37,794 INFO L298 CDTParser]: Found 1 translation units. [2018-11-10 08:51:37,795 INFO L158 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/working_dir_8ed9c883-94d4-447a-a95d-17c6ea0aab37/sv-benchmarks/c/memsafety-ext3/scopes4_false-valid-deref.c [2018-11-10 08:51:37,799 INFO L346 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_8ed9c883-94d4-447a-a95d-17c6ea0aab37/bin-2019/uautomizer/data/8dbcff85c/cfa69be0f91046b7830d3dfa561424a9/FLAG3221f1d2a [2018-11-10 08:51:37,807 INFO L354 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/working_dir_8ed9c883-94d4-447a-a95d-17c6ea0aab37/bin-2019/uautomizer/data/8dbcff85c/cfa69be0f91046b7830d3dfa561424a9 [2018-11-10 08:51:37,809 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-11-10 08:51:37,810 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-11-10 08:51:37,811 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-11-10 08:51:37,811 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-11-10 08:51:37,814 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-11-10 08:51:37,815 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.11 08:51:37" (1/1) ... [2018-11-10 08:51:37,817 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@332681e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 08:51:37, skipping insertion in model container [2018-11-10 08:51:37,818 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.11 08:51:37" (1/1) ... [2018-11-10 08:51:37,824 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-11-10 08:51:37,836 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-11-10 08:51:37,964 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-11-10 08:51:37,970 INFO L189 MainTranslator]: Completed pre-run [2018-11-10 08:51:37,980 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-11-10 08:51:37,991 INFO L193 MainTranslator]: Completed translation [2018-11-10 08:51:37,991 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 08:51:37 WrapperNode [2018-11-10 08:51:37,992 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-11-10 08:51:37,992 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-11-10 08:51:37,992 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-11-10 08:51:37,992 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-11-10 08:51:38,000 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 08:51:37" (1/1) ... [2018-11-10 08:51:38,000 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 08:51:37" (1/1) ... [2018-11-10 08:51:38,005 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 08:51:37" (1/1) ... [2018-11-10 08:51:38,005 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 08:51:37" (1/1) ... [2018-11-10 08:51:38,009 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 08:51:37" (1/1) ... [2018-11-10 08:51:38,009 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 08:51:37" (1/1) ... [2018-11-10 08:51:38,010 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 08:51:37" (1/1) ... [2018-11-10 08:51:38,011 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-11-10 08:51:38,011 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-11-10 08:51:38,011 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-11-10 08:51:38,011 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-11-10 08:51:38,012 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 08:51:37" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_8ed9c883-94d4-447a-a95d-17c6ea0aab37/bin-2019/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 [2018-11-10 08:51:38,092 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-11-10 08:51:38,093 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-11-10 08:51:38,093 INFO L138 BoogieDeclarations]: Found implementation of procedure foo2 [2018-11-10 08:51:38,093 INFO L138 BoogieDeclarations]: Found implementation of procedure foo [2018-11-10 08:51:38,093 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-11-10 08:51:38,093 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2018-11-10 08:51:38,093 INFO L130 BoogieDeclarations]: Found specification of procedure foo2 [2018-11-10 08:51:38,093 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.alloc [2018-11-10 08:51:38,093 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2018-11-10 08:51:38,094 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2018-11-10 08:51:38,094 INFO L130 BoogieDeclarations]: Found specification of procedure foo [2018-11-10 08:51:38,094 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-11-10 08:51:38,094 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2018-11-10 08:51:38,094 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-11-10 08:51:38,094 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-11-10 08:51:38,094 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2018-11-10 08:51:38,218 INFO L341 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-11-10 08:51:38,218 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.11 08:51:38 BoogieIcfgContainer [2018-11-10 08:51:38,218 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-11-10 08:51:38,219 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-11-10 08:51:38,219 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-11-10 08:51:38,222 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-11-10 08:51:38,222 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 10.11 08:51:37" (1/3) ... [2018-11-10 08:51:38,223 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@32dd6579 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.11 08:51:38, skipping insertion in model container [2018-11-10 08:51:38,223 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 08:51:37" (2/3) ... [2018-11-10 08:51:38,223 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@32dd6579 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.11 08:51:38, skipping insertion in model container [2018-11-10 08:51:38,223 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.11 08:51:38" (3/3) ... [2018-11-10 08:51:38,224 INFO L112 eAbstractionObserver]: Analyzing ICFG scopes4_false-valid-deref.c [2018-11-10 08:51:38,231 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-11-10 08:51:38,235 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 5 error locations. [2018-11-10 08:51:38,244 INFO L257 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2018-11-10 08:51:38,259 INFO L135 ementStrategyFactory]: Using default assertion order modulation [2018-11-10 08:51:38,259 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-11-10 08:51:38,259 INFO L383 AbstractCegarLoop]: Hoare is false [2018-11-10 08:51:38,259 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-11-10 08:51:38,260 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-11-10 08:51:38,260 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-11-10 08:51:38,260 INFO L387 AbstractCegarLoop]: Difference is false [2018-11-10 08:51:38,260 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-11-10 08:51:38,260 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-11-10 08:51:38,268 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states. [2018-11-10 08:51:38,274 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2018-11-10 08:51:38,275 INFO L367 BasicCegarLoop]: Found error trace [2018-11-10 08:51:38,275 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-10 08:51:38,277 INFO L424 AbstractCegarLoop]: === Iteration 1 === [mainErr0REQUIRES_VIOLATION, mainErr2ENSURES_VIOLATIONMEMORY_LEAK, mainErr1REQUIRES_VIOLATION, foo2Err0REQUIRES_VIOLATION, foo2Err1REQUIRES_VIOLATION]=== [2018-11-10 08:51:38,281 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-10 08:51:38,282 INFO L82 PathProgramCache]: Analyzing trace with hash -1949497925, now seen corresponding path program 1 times [2018-11-10 08:51:38,283 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-10 08:51:38,283 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-10 08:51:38,321 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 08:51:38,321 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-10 08:51:38,321 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 08:51:38,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-10 08:51:38,399 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-10 08:51:38,400 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-10 08:51:38,401 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-11-10 08:51:38,403 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-11-10 08:51:38,411 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-11-10 08:51:38,412 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-10 08:51:38,414 INFO L87 Difference]: Start difference. First operand 32 states. Second operand 3 states. [2018-11-10 08:51:38,464 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-10 08:51:38,464 INFO L93 Difference]: Finished difference Result 31 states and 30 transitions. [2018-11-10 08:51:38,465 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-11-10 08:51:38,466 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 12 [2018-11-10 08:51:38,466 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-10 08:51:38,474 INFO L225 Difference]: With dead ends: 31 [2018-11-10 08:51:38,474 INFO L226 Difference]: Without dead ends: 28 [2018-11-10 08:51:38,476 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-10 08:51:38,491 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states. [2018-11-10 08:51:38,500 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 28. [2018-11-10 08:51:38,501 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2018-11-10 08:51:38,502 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 27 transitions. [2018-11-10 08:51:38,503 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 27 transitions. Word has length 12 [2018-11-10 08:51:38,503 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-10 08:51:38,503 INFO L481 AbstractCegarLoop]: Abstraction has 28 states and 27 transitions. [2018-11-10 08:51:38,503 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-11-10 08:51:38,503 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 27 transitions. [2018-11-10 08:51:38,503 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2018-11-10 08:51:38,503 INFO L367 BasicCegarLoop]: Found error trace [2018-11-10 08:51:38,504 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-10 08:51:38,504 INFO L424 AbstractCegarLoop]: === Iteration 2 === [mainErr0REQUIRES_VIOLATION, mainErr2ENSURES_VIOLATIONMEMORY_LEAK, mainErr1REQUIRES_VIOLATION, foo2Err0REQUIRES_VIOLATION, foo2Err1REQUIRES_VIOLATION]=== [2018-11-10 08:51:38,504 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-10 08:51:38,504 INFO L82 PathProgramCache]: Analyzing trace with hash -1949497924, now seen corresponding path program 1 times [2018-11-10 08:51:38,504 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-10 08:51:38,504 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-10 08:51:38,505 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 08:51:38,505 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-10 08:51:38,505 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 08:51:38,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-10 08:51:38,552 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-10 08:51:38,552 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-10 08:51:38,553 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-11-10 08:51:38,554 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-11-10 08:51:38,554 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-11-10 08:51:38,554 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-10 08:51:38,554 INFO L87 Difference]: Start difference. First operand 28 states and 27 transitions. Second operand 3 states. [2018-11-10 08:51:38,573 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-10 08:51:38,573 INFO L93 Difference]: Finished difference Result 27 states and 26 transitions. [2018-11-10 08:51:38,573 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-11-10 08:51:38,573 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 12 [2018-11-10 08:51:38,573 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-10 08:51:38,574 INFO L225 Difference]: With dead ends: 27 [2018-11-10 08:51:38,574 INFO L226 Difference]: Without dead ends: 27 [2018-11-10 08:51:38,574 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-10 08:51:38,575 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2018-11-10 08:51:38,576 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 27. [2018-11-10 08:51:38,576 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2018-11-10 08:51:38,576 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 26 transitions. [2018-11-10 08:51:38,577 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 26 transitions. Word has length 12 [2018-11-10 08:51:38,577 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-10 08:51:38,577 INFO L481 AbstractCegarLoop]: Abstraction has 27 states and 26 transitions. [2018-11-10 08:51:38,577 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-11-10 08:51:38,577 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 26 transitions. [2018-11-10 08:51:38,577 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2018-11-10 08:51:38,577 INFO L367 BasicCegarLoop]: Found error trace [2018-11-10 08:51:38,578 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-10 08:51:38,578 INFO L424 AbstractCegarLoop]: === Iteration 3 === [mainErr0REQUIRES_VIOLATION, mainErr2ENSURES_VIOLATIONMEMORY_LEAK, mainErr1REQUIRES_VIOLATION, foo2Err0REQUIRES_VIOLATION, foo2Err1REQUIRES_VIOLATION]=== [2018-11-10 08:51:38,578 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-10 08:51:38,578 INFO L82 PathProgramCache]: Analyzing trace with hash 582454179, now seen corresponding path program 1 times [2018-11-10 08:51:38,578 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-10 08:51:38,578 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-10 08:51:38,579 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 08:51:38,579 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-10 08:51:38,579 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 08:51:38,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-10 08:51:38,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-10 08:51:38,630 INFO L442 BasicCegarLoop]: Counterexample might be feasible [2018-11-10 08:51:38,646 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 10.11 08:51:38 BoogieIcfgContainer [2018-11-10 08:51:38,646 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-11-10 08:51:38,647 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2018-11-10 08:51:38,647 INFO L271 PluginConnector]: Initializing Witness Printer... [2018-11-10 08:51:38,647 INFO L276 PluginConnector]: Witness Printer initialized [2018-11-10 08:51:38,647 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.11 08:51:38" (3/4) ... [2018-11-10 08:51:38,649 INFO L138 WitnessPrinter]: Generating witness for reachability counterexample [2018-11-10 08:51:38,677 INFO L145 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/working_dir_8ed9c883-94d4-447a-a95d-17c6ea0aab37/bin-2019/uautomizer/witness.graphml [2018-11-10 08:51:38,677 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2018-11-10 08:51:38,678 INFO L168 Benchmark]: Toolchain (without parser) took 868.03 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 145.2 MB). Free memory was 954.8 MB in the beginning and 1.1 GB in the end (delta: -131.6 MB). Peak memory consumption was 13.7 MB. Max. memory is 11.5 GB. [2018-11-10 08:51:38,679 INFO L168 Benchmark]: CDTParser took 0.12 ms. Allocated memory is still 1.0 GB. Free memory is still 980.1 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-11-10 08:51:38,679 INFO L168 Benchmark]: CACSL2BoogieTranslator took 180.84 ms. Allocated memory is still 1.0 GB. Free memory was 954.8 MB in the beginning and 943.0 MB in the end (delta: 11.8 MB). Peak memory consumption was 11.8 MB. Max. memory is 11.5 GB. [2018-11-10 08:51:38,679 INFO L168 Benchmark]: Boogie Preprocessor took 18.91 ms. Allocated memory is still 1.0 GB. Free memory was 943.0 MB in the beginning and 940.3 MB in the end (delta: 2.7 MB). Peak memory consumption was 2.7 MB. Max. memory is 11.5 GB. [2018-11-10 08:51:38,679 INFO L168 Benchmark]: RCFGBuilder took 207.14 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 145.2 MB). Free memory was 940.3 MB in the beginning and 1.1 GB in the end (delta: -187.7 MB). Peak memory consumption was 19.8 MB. Max. memory is 11.5 GB. [2018-11-10 08:51:38,680 INFO L168 Benchmark]: TraceAbstraction took 427.52 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: 41.6 MB). Peak memory consumption was 41.6 MB. Max. memory is 11.5 GB. [2018-11-10 08:51:38,680 INFO L168 Benchmark]: Witness Printer took 30.69 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. [2018-11-10 08:51:38,682 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.12 ms. Allocated memory is still 1.0 GB. Free memory is still 980.1 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 180.84 ms. Allocated memory is still 1.0 GB. Free memory was 954.8 MB in the beginning and 943.0 MB in the end (delta: 11.8 MB). Peak memory consumption was 11.8 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 18.91 ms. Allocated memory is still 1.0 GB. Free memory was 943.0 MB in the beginning and 940.3 MB in the end (delta: 2.7 MB). Peak memory consumption was 2.7 MB. Max. memory is 11.5 GB. * RCFGBuilder took 207.14 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 145.2 MB). Free memory was 940.3 MB in the beginning and 1.1 GB in the end (delta: -187.7 MB). Peak memory consumption was 19.8 MB. Max. memory is 11.5 GB. * TraceAbstraction took 427.52 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: 41.6 MB). Peak memory consumption was 41.6 MB. Max. memory is 11.5 GB. * Witness Printer took 30.69 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: 18]: pointer dereference may fail pointer dereference may fail We found a FailurePath: [L18] FCALL "%d\n" VAL ["%d\n"={4102:0}, \old("%d\n")=4097, \old("%d\n")=4099] [L17] CALL, EXPR foo() VAL ["%d\n"={4102:0}] [L12] int arr[123]; VAL ["%d\n"={4102:0}] [L13] CALL, EXPR foo2() VAL ["%d\n"={4102:0}] [L5] FCALL int arr[1024]; VAL ["%d\n"={4102:0}, arr={4101:0}] [L6] FCALL arr[194] = 13 VAL ["%d\n"={4102:0}, arr={4101:0}] [L7] return arr + 1; VAL ["%d\n"={4102:0}, \result={4101:4}, arr={4101:0}] [L7] RET return arr + 1; VAL ["%d\n"={4102:0}, \result={4101:4}] [L13] EXPR foo2() VAL ["%d\n"={4102:0}, foo2()={4101:4}] [L13] RET return foo2(); [L17] EXPR foo() VAL ["%d\n"={4102:0}, foo()={4101:4}] [L17] int *a = foo(); [L18] FCALL \read(*a) - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 32 locations, 5 error locations. UNSAFE Result, 0.3s OverallTime, 3 OverallIterations, 1 TraceHistogramMax, 0.0s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 49 SDtfs, 6 SDslu, 36 SDs, 0 SdLazy, 19 SolverSat, 0 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=32occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s AbstIntTime, 0 AbstIntIterations, 0 AbstIntStrong, NaN AbsIntWeakeningRatio, NaN AbsIntAvgWeakeningVarsNumRemoved, NaN AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 2 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 46 NumberOfCodeBlocks, 46 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 22 ConstructedInterpolants, 0 QuantifiedInterpolants, 374 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 2 InterpolantComputations, 2 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! Received shutdown request...