./Ultimate.py --spec ../../sv-benchmarks/c/MemSafety.prp --file ../../sv-benchmarks/c/memsafety-ext3/scopes2_false-valid-deref.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 5842f4b8 Calling Ultimate with: java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/working_dir_92a42ea7-3a3d-41d0-ab36-2a881d774864/bin-2019/uautomizer/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/working_dir_92a42ea7-3a3d-41d0-ab36-2a881d774864/bin-2019/uautomizer/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/working_dir_92a42ea7-3a3d-41d0-ab36-2a881d774864/bin-2019/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/working_dir_92a42ea7-3a3d-41d0-ab36-2a881d774864/bin-2019/uautomizer/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/memsafety-ext3/scopes2_false-valid-deref.c -s /tmp/vcloud-vcloud-master/worker/working_dir_92a42ea7-3a3d-41d0-ab36-2a881d774864/bin-2019/uautomizer/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/working_dir_92a42ea7-3a3d-41d0-ab36-2a881d774864/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 a06ac35b6270d716926f4cab09091bb160bdd736 ...................................................................................................................................................................................................................................... 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 0.1.23-5842f4b [2018-11-18 10:51:24,845 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-11-18 10:51:24,846 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-11-18 10:51:24,853 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-11-18 10:51:24,853 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-11-18 10:51:24,854 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-11-18 10:51:24,855 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-11-18 10:51:24,856 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-11-18 10:51:24,857 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-11-18 10:51:24,857 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-11-18 10:51:24,858 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-11-18 10:51:24,858 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-11-18 10:51:24,859 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-11-18 10:51:24,859 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-11-18 10:51:24,860 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-11-18 10:51:24,860 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-11-18 10:51:24,861 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-11-18 10:51:24,862 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-11-18 10:51:24,863 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-11-18 10:51:24,863 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-11-18 10:51:24,864 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-11-18 10:51:24,864 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-11-18 10:51:24,866 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-11-18 10:51:24,866 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-11-18 10:51:24,866 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-11-18 10:51:24,866 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-11-18 10:51:24,867 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-11-18 10:51:24,868 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-11-18 10:51:24,868 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-11-18 10:51:24,869 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-11-18 10:51:24,869 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-11-18 10:51:24,870 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-11-18 10:51:24,870 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-11-18 10:51:24,870 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-11-18 10:51:24,871 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-11-18 10:51:24,871 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-11-18 10:51:24,871 INFO L98 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/working_dir_92a42ea7-3a3d-41d0-ab36-2a881d774864/bin-2019/uautomizer/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2018-11-18 10:51:24,879 INFO L110 SettingsManager]: Loading preferences was successful [2018-11-18 10:51:24,879 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-11-18 10:51:24,879 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-11-18 10:51:24,879 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-11-18 10:51:24,880 INFO L133 SettingsManager]: * Use SBE=true [2018-11-18 10:51:24,880 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-11-18 10:51:24,880 INFO L133 SettingsManager]: * sizeof long=4 [2018-11-18 10:51:24,880 INFO L133 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2018-11-18 10:51:24,880 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-11-18 10:51:24,880 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-11-18 10:51:24,880 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-11-18 10:51:24,880 INFO L133 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2018-11-18 10:51:24,880 INFO L133 SettingsManager]: * Bitprecise bitfields=true [2018-11-18 10:51:24,881 INFO L133 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2018-11-18 10:51:24,881 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-11-18 10:51:24,881 INFO L133 SettingsManager]: * sizeof long double=12 [2018-11-18 10:51:24,881 INFO L133 SettingsManager]: * Use constant arrays=true [2018-11-18 10:51:24,881 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-11-18 10:51:24,881 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-11-18 10:51:24,881 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-11-18 10:51:24,881 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-11-18 10:51:24,882 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-11-18 10:51:24,882 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-11-18 10:51:24,882 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-11-18 10:51:24,882 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-11-18 10:51:24,882 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-11-18 10:51:24,882 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_92a42ea7-3a3d-41d0-ab36-2a881d774864/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 -> a06ac35b6270d716926f4cab09091bb160bdd736 [2018-11-18 10:51:24,905 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-11-18 10:51:24,913 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-11-18 10:51:24,916 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-11-18 10:51:24,917 INFO L271 PluginConnector]: Initializing CDTParser... [2018-11-18 10:51:24,917 INFO L276 PluginConnector]: CDTParser initialized [2018-11-18 10:51:24,918 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/working_dir_92a42ea7-3a3d-41d0-ab36-2a881d774864/bin-2019/uautomizer/../../sv-benchmarks/c/memsafety-ext3/scopes2_false-valid-deref.c [2018-11-18 10:51:24,955 INFO L221 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_92a42ea7-3a3d-41d0-ab36-2a881d774864/bin-2019/uautomizer/data/2d221cafa/83690ed9445745559539777b2e7c2bed/FLAG975e32ab1 [2018-11-18 10:51:25,338 INFO L307 CDTParser]: Found 1 translation units. [2018-11-18 10:51:25,339 INFO L161 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/working_dir_92a42ea7-3a3d-41d0-ab36-2a881d774864/sv-benchmarks/c/memsafety-ext3/scopes2_false-valid-deref.c [2018-11-18 10:51:25,342 INFO L355 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_92a42ea7-3a3d-41d0-ab36-2a881d774864/bin-2019/uautomizer/data/2d221cafa/83690ed9445745559539777b2e7c2bed/FLAG975e32ab1 [2018-11-18 10:51:25,353 INFO L363 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/working_dir_92a42ea7-3a3d-41d0-ab36-2a881d774864/bin-2019/uautomizer/data/2d221cafa/83690ed9445745559539777b2e7c2bed [2018-11-18 10:51:25,355 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-11-18 10:51:25,356 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-11-18 10:51:25,357 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-11-18 10:51:25,357 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-11-18 10:51:25,359 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-11-18 10:51:25,360 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 10:51:25" (1/1) ... [2018-11-18 10:51:25,361 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@68c4f020 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 10:51:25, skipping insertion in model container [2018-11-18 10:51:25,362 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 10:51:25" (1/1) ... [2018-11-18 10:51:25,367 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-11-18 10:51:25,378 INFO L176 MainTranslator]: Built tables and reachable declarations [2018-11-18 10:51:25,474 INFO L201 PostProcessor]: Analyzing one entry point: main [2018-11-18 10:51:25,479 INFO L191 MainTranslator]: Completed pre-run [2018-11-18 10:51:25,488 INFO L201 PostProcessor]: Analyzing one entry point: main [2018-11-18 10:51:25,497 INFO L195 MainTranslator]: Completed translation [2018-11-18 10:51:25,497 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 10:51:25 WrapperNode [2018-11-18 10:51:25,497 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-11-18 10:51:25,498 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-11-18 10:51:25,498 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-11-18 10:51:25,498 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-11-18 10:51:25,508 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 10:51:25" (1/1) ... [2018-11-18 10:51:25,509 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 10:51:25" (1/1) ... [2018-11-18 10:51:25,515 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 10:51:25" (1/1) ... [2018-11-18 10:51:25,516 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 10:51:25" (1/1) ... [2018-11-18 10:51:25,520 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 10:51:25" (1/1) ... [2018-11-18 10:51:25,521 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 10:51:25" (1/1) ... [2018-11-18 10:51:25,522 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 10:51:25" (1/1) ... [2018-11-18 10:51:25,523 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-11-18 10:51:25,524 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-11-18 10:51:25,524 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-11-18 10:51:25,524 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-11-18 10:51:25,525 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 10:51:25" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_92a42ea7-3a3d-41d0-ab36-2a881d774864/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 [2018-11-18 10:51:25,605 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-11-18 10:51:25,605 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-11-18 10:51:25,605 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-11-18 10:51:25,605 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2018-11-18 10:51:25,606 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2018-11-18 10:51:25,606 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-11-18 10:51:25,606 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.alloc [2018-11-18 10:51:25,606 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2018-11-18 10:51:25,606 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2018-11-18 10:51:25,606 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2018-11-18 10:51:25,606 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-11-18 10:51:25,606 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-11-18 10:51:25,606 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2018-11-18 10:51:25,766 INFO L278 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-11-18 10:51:25,767 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 10:51:25 BoogieIcfgContainer [2018-11-18 10:51:25,767 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-11-18 10:51:25,767 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-11-18 10:51:25,767 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-11-18 10:51:25,770 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-11-18 10:51:25,770 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.11 10:51:25" (1/3) ... [2018-11-18 10:51:25,771 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@155d9a64 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 10:51:25, skipping insertion in model container [2018-11-18 10:51:25,771 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 10:51:25" (2/3) ... [2018-11-18 10:51:25,771 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@155d9a64 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 10:51:25, skipping insertion in model container [2018-11-18 10:51:25,772 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 10:51:25" (3/3) ... [2018-11-18 10:51:25,773 INFO L112 eAbstractionObserver]: Analyzing ICFG scopes2_false-valid-deref.c [2018-11-18 10:51:25,781 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-11-18 10:51:25,787 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 5 error locations. [2018-11-18 10:51:25,801 INFO L257 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2018-11-18 10:51:25,822 INFO L133 ementStrategyFactory]: Using default assertion order modulation [2018-11-18 10:51:25,823 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-11-18 10:51:25,823 INFO L383 AbstractCegarLoop]: Hoare is false [2018-11-18 10:51:25,823 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-11-18 10:51:25,823 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-11-18 10:51:25,823 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-11-18 10:51:25,823 INFO L387 AbstractCegarLoop]: Difference is false [2018-11-18 10:51:25,824 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-11-18 10:51:25,824 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-11-18 10:51:25,836 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states. [2018-11-18 10:51:25,843 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2018-11-18 10:51:25,843 INFO L367 BasicCegarLoop]: Found error trace [2018-11-18 10:51:25,844 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-18 10:51:25,845 INFO L423 AbstractCegarLoop]: === Iteration 1 === [mainErr0REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4ENSURES_VIOLATIONMEMORY_LEAK]=== [2018-11-18 10:51:25,850 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 10:51:25,850 INFO L82 PathProgramCache]: Analyzing trace with hash 262489660, now seen corresponding path program 1 times [2018-11-18 10:51:25,852 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-18 10:51:25,852 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-18 10:51:25,891 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 10:51:25,891 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 10:51:25,892 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 10:51:25,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-18 10:51:25,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-18 10:51:25,970 INFO L442 BasicCegarLoop]: Counterexample might be feasible [2018-11-18 10:51:25,989 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 18.11 10:51:25 BoogieIcfgContainer [2018-11-18 10:51:25,989 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-11-18 10:51:25,989 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2018-11-18 10:51:25,990 INFO L271 PluginConnector]: Initializing Witness Printer... [2018-11-18 10:51:25,990 INFO L276 PluginConnector]: Witness Printer initialized [2018-11-18 10:51:25,990 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 10:51:25" (3/4) ... [2018-11-18 10:51:25,992 INFO L138 WitnessPrinter]: Generating witness for reachability counterexample [2018-11-18 10:51:26,023 INFO L145 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/working_dir_92a42ea7-3a3d-41d0-ab36-2a881d774864/bin-2019/uautomizer/witness.graphml [2018-11-18 10:51:26,024 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2018-11-18 10:51:26,024 INFO L168 Benchmark]: Toolchain (without parser) took 668.72 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 147.8 MB). Free memory was 958.2 MB in the beginning and 1.1 GB in the end (delta: -148.2 MB). There was no memory consumed. Max. memory is 11.5 GB. [2018-11-18 10:51:26,025 INFO L168 Benchmark]: CDTParser took 0.14 ms. Allocated memory is still 1.0 GB. Free memory is still 985.6 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-11-18 10:51:26,026 INFO L168 Benchmark]: CACSL2BoogieTranslator took 140.80 ms. Allocated memory is still 1.0 GB. Free memory was 958.2 MB in the beginning and 947.4 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. [2018-11-18 10:51:26,026 INFO L168 Benchmark]: Boogie Preprocessor took 25.84 ms. Allocated memory is still 1.0 GB. Free memory was 947.4 MB in the beginning and 944.7 MB in the end (delta: 2.7 MB). Peak memory consumption was 2.7 MB. Max. memory is 11.5 GB. [2018-11-18 10:51:26,027 INFO L168 Benchmark]: RCFGBuilder took 243.12 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 147.8 MB). Free memory was 944.7 MB in the beginning and 1.1 GB in the end (delta: -183.2 MB). Peak memory consumption was 14.4 MB. Max. memory is 11.5 GB. [2018-11-18 10:51:26,027 INFO L168 Benchmark]: TraceAbstraction took 221.78 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: 18.2 MB). Peak memory consumption was 18.2 MB. Max. memory is 11.5 GB. [2018-11-18 10:51:26,028 INFO L168 Benchmark]: Witness Printer took 34.23 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: 3.4 MB). Peak memory consumption was 3.4 MB. Max. memory is 11.5 GB. [2018-11-18 10:51:26,030 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.14 ms. Allocated memory is still 1.0 GB. Free memory is still 985.6 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 140.80 ms. Allocated memory is still 1.0 GB. Free memory was 958.2 MB in the beginning and 947.4 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 25.84 ms. Allocated memory is still 1.0 GB. Free memory was 947.4 MB in the beginning and 944.7 MB in the end (delta: 2.7 MB). Peak memory consumption was 2.7 MB. Max. memory is 11.5 GB. * RCFGBuilder took 243.12 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 147.8 MB). Free memory was 944.7 MB in the beginning and 1.1 GB in the end (delta: -183.2 MB). Peak memory consumption was 14.4 MB. Max. memory is 11.5 GB. * TraceAbstraction took 221.78 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: 18.2 MB). Peak memory consumption was 18.2 MB. Max. memory is 11.5 GB. * Witness Printer took 34.23 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: 3.4 MB). Peak memory consumption was 3.4 MB. 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: [L19] FCALL "%d" VAL ["%d"={107:0}, \old("%d")=106, \old("%d")=104] [L5] int *myPointerA = ((void*) 0); [L6] int *myPointerB = ((void*) 0); [L8] COND TRUE __VERIFIER_nondet_int() [L10] FCALL int myNumberA = 7; [L11] myPointerA = &myNumberA [L10] FCALL int myNumberA = 7; VAL ["%d"={107:0}, myPointerA={102:0}, myPointerB={0:0}] [L15] FCALL int myNumberB = 3; [L16] myPointerB = &myNumberB VAL ["%d"={107:0}, myNumberB={103:0}, myPointerA={102:0}, myPointerB={103:0}] [L18] FCALL \read(*myPointerA) - StatisticsResult: Ultimate Automizer benchmark data CFG has 3 procedures, 20 locations, 5 error locations. UNSAFE Result, 0.1s OverallTime, 1 OverallIterations, 1 TraceHistogramMax, 0.0s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: No data available, PredicateUnifierStatistics: No data available, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=20occurred 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: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 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, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! Received shutdown request...