./Ultimate.py --spec ../../sv-benchmarks/c/MemSafety.prp --file ../../sv-benchmarks/c/ldv-memsafety/ArraysOfVariableLength_false-valid-deref-write.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_1744df69-c8b3-4cfb-a211-f3226ad2067f/bin-2019/uautomizer/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/working_dir_1744df69-c8b3-4cfb-a211-f3226ad2067f/bin-2019/uautomizer/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/working_dir_1744df69-c8b3-4cfb-a211-f3226ad2067f/bin-2019/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/working_dir_1744df69-c8b3-4cfb-a211-f3226ad2067f/bin-2019/uautomizer/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/ldv-memsafety/ArraysOfVariableLength_false-valid-deref-write.c -s /tmp/vcloud-vcloud-master/worker/working_dir_1744df69-c8b3-4cfb-a211-f3226ad2067f/bin-2019/uautomizer/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/working_dir_1744df69-c8b3-4cfb-a211-f3226ad2067f/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 0dfe0f165ef563fbd088ad0368faf44ddd32870a ............................................................................................................................................................................................................................................................................................................... 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 11:20:23,770 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-11-10 11:20:23,772 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-11-10 11:20:23,782 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-11-10 11:20:23,782 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-11-10 11:20:23,783 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-11-10 11:20:23,784 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-11-10 11:20:23,786 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-11-10 11:20:23,787 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-11-10 11:20:23,788 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-11-10 11:20:23,789 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-11-10 11:20:23,789 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-11-10 11:20:23,790 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-11-10 11:20:23,791 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-11-10 11:20:23,792 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-11-10 11:20:23,792 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-11-10 11:20:23,793 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-11-10 11:20:23,794 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-11-10 11:20:23,796 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-11-10 11:20:23,797 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-11-10 11:20:23,798 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-11-10 11:20:23,799 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-11-10 11:20:23,801 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-11-10 11:20:23,801 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-11-10 11:20:23,802 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-11-10 11:20:23,802 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-11-10 11:20:23,803 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-11-10 11:20:23,804 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-11-10 11:20:23,804 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-11-10 11:20:23,805 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-11-10 11:20:23,806 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-11-10 11:20:23,806 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-11-10 11:20:23,806 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-11-10 11:20:23,807 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-11-10 11:20:23,807 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-11-10 11:20:23,808 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-11-10 11:20:23,808 INFO L98 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/working_dir_1744df69-c8b3-4cfb-a211-f3226ad2067f/bin-2019/uautomizer/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2018-11-10 11:20:23,820 INFO L110 SettingsManager]: Loading preferences was successful [2018-11-10 11:20:23,820 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-11-10 11:20:23,822 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-11-10 11:20:23,822 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-11-10 11:20:23,822 INFO L133 SettingsManager]: * Use SBE=true [2018-11-10 11:20:23,822 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-11-10 11:20:23,822 INFO L133 SettingsManager]: * sizeof long=4 [2018-11-10 11:20:23,822 INFO L133 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2018-11-10 11:20:23,823 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-11-10 11:20:23,823 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-11-10 11:20:23,823 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-11-10 11:20:23,823 INFO L133 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2018-11-10 11:20:23,823 INFO L133 SettingsManager]: * Bitprecise bitfields=true [2018-11-10 11:20:23,823 INFO L133 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2018-11-10 11:20:23,824 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-11-10 11:20:23,824 INFO L133 SettingsManager]: * sizeof long double=12 [2018-11-10 11:20:23,824 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-11-10 11:20:23,824 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-11-10 11:20:23,824 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-11-10 11:20:23,824 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-11-10 11:20:23,825 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-11-10 11:20:23,825 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-11-10 11:20:23,825 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-11-10 11:20:23,825 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-11-10 11:20:23,825 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-11-10 11:20:23,825 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_1744df69-c8b3-4cfb-a211-f3226ad2067f/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 -> 0dfe0f165ef563fbd088ad0368faf44ddd32870a [2018-11-10 11:20:23,853 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-11-10 11:20:23,865 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-11-10 11:20:23,869 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-11-10 11:20:23,870 INFO L271 PluginConnector]: Initializing CDTParser... [2018-11-10 11:20:23,871 INFO L276 PluginConnector]: CDTParser initialized [2018-11-10 11:20:23,872 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/working_dir_1744df69-c8b3-4cfb-a211-f3226ad2067f/bin-2019/uautomizer/../../sv-benchmarks/c/ldv-memsafety/ArraysOfVariableLength_false-valid-deref-write.c [2018-11-10 11:20:23,926 INFO L218 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_1744df69-c8b3-4cfb-a211-f3226ad2067f/bin-2019/uautomizer/data/491e72392/7f84fb7427b1449081c310e12dafd871/FLAG5164bbdda [2018-11-10 11:20:24,280 INFO L298 CDTParser]: Found 1 translation units. [2018-11-10 11:20:24,280 INFO L158 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/working_dir_1744df69-c8b3-4cfb-a211-f3226ad2067f/sv-benchmarks/c/ldv-memsafety/ArraysOfVariableLength_false-valid-deref-write.c [2018-11-10 11:20:24,287 INFO L346 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_1744df69-c8b3-4cfb-a211-f3226ad2067f/bin-2019/uautomizer/data/491e72392/7f84fb7427b1449081c310e12dafd871/FLAG5164bbdda [2018-11-10 11:20:24,301 INFO L354 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/working_dir_1744df69-c8b3-4cfb-a211-f3226ad2067f/bin-2019/uautomizer/data/491e72392/7f84fb7427b1449081c310e12dafd871 [2018-11-10 11:20:24,304 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-11-10 11:20:24,306 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-11-10 11:20:24,306 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-11-10 11:20:24,307 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-11-10 11:20:24,310 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-11-10 11:20:24,311 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.11 11:20:24" (1/1) ... [2018-11-10 11:20:24,314 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4224e6c3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 11:20:24, skipping insertion in model container [2018-11-10 11:20:24,314 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.11 11:20:24" (1/1) ... [2018-11-10 11:20:24,323 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-11-10 11:20:24,342 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-11-10 11:20:24,470 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-11-10 11:20:24,477 INFO L189 MainTranslator]: Completed pre-run [2018-11-10 11:20:24,489 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-11-10 11:20:24,500 INFO L193 MainTranslator]: Completed translation [2018-11-10 11:20:24,500 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 11:20:24 WrapperNode [2018-11-10 11:20:24,500 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-11-10 11:20:24,501 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-11-10 11:20:24,501 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-11-10 11:20:24,501 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-11-10 11:20:24,510 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 11:20:24" (1/1) ... [2018-11-10 11:20:24,510 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 11:20:24" (1/1) ... [2018-11-10 11:20:24,516 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 11:20:24" (1/1) ... [2018-11-10 11:20:24,516 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 11:20:24" (1/1) ... [2018-11-10 11:20:24,522 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 11:20:24" (1/1) ... [2018-11-10 11:20:24,526 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 11:20:24" (1/1) ... [2018-11-10 11:20:24,528 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 11:20:24" (1/1) ... [2018-11-10 11:20:24,530 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-11-10 11:20:24,530 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-11-10 11:20:24,530 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-11-10 11:20:24,530 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-11-10 11:20:24,531 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 11:20:24" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_1744df69-c8b3-4cfb-a211-f3226ad2067f/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 11:20:24,626 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-11-10 11:20:24,626 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-11-10 11:20:24,626 INFO L138 BoogieDeclarations]: Found implementation of procedure foo [2018-11-10 11:20:24,626 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-11-10 11:20:24,627 INFO L130 BoogieDeclarations]: Found specification of procedure foo [2018-11-10 11:20:24,627 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2018-11-10 11:20:24,627 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-11-10 11:20:24,627 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.alloc [2018-11-10 11:20:24,627 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2018-11-10 11:20:24,627 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2018-11-10 11:20:24,627 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-11-10 11:20:24,627 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-11-10 11:20:24,627 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2018-11-10 11:20:24,812 INFO L341 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-11-10 11:20:24,812 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.11 11:20:24 BoogieIcfgContainer [2018-11-10 11:20:24,812 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-11-10 11:20:24,813 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-11-10 11:20:24,813 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-11-10 11:20:24,816 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-11-10 11:20:24,816 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 10.11 11:20:24" (1/3) ... [2018-11-10 11:20:24,817 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@347df417 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.11 11:20:24, skipping insertion in model container [2018-11-10 11:20:24,817 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 11:20:24" (2/3) ... [2018-11-10 11:20:24,817 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@347df417 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.11 11:20:24, skipping insertion in model container [2018-11-10 11:20:24,817 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.11 11:20:24" (3/3) ... [2018-11-10 11:20:24,819 INFO L112 eAbstractionObserver]: Analyzing ICFG ArraysOfVariableLength_false-valid-deref-write.c [2018-11-10 11:20:24,825 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-11-10 11:20:24,831 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 8 error locations. [2018-11-10 11:20:24,843 INFO L257 AbstractCegarLoop]: Starting to check reachability of 8 error locations. [2018-11-10 11:20:24,861 INFO L135 ementStrategyFactory]: Using default assertion order modulation [2018-11-10 11:20:24,862 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-11-10 11:20:24,862 INFO L383 AbstractCegarLoop]: Hoare is false [2018-11-10 11:20:24,862 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-11-10 11:20:24,862 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-11-10 11:20:24,862 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-11-10 11:20:24,862 INFO L387 AbstractCegarLoop]: Difference is false [2018-11-10 11:20:24,863 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-11-10 11:20:24,863 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-11-10 11:20:24,875 INFO L276 IsEmpty]: Start isEmpty. Operand 49 states. [2018-11-10 11:20:24,883 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2018-11-10 11:20:24,883 INFO L367 BasicCegarLoop]: Found error trace [2018-11-10 11:20:24,884 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-10 11:20:24,885 INFO L424 AbstractCegarLoop]: === Iteration 1 === [fooErr0ASSERT_VIOLATIONARRAY_INDEX, fooErr2REQUIRES_VIOLATION, fooErr1REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4ENSURES_VIOLATIONMEMORY_LEAK]=== [2018-11-10 11:20:24,890 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-10 11:20:24,890 INFO L82 PathProgramCache]: Analyzing trace with hash 1202729229, now seen corresponding path program 1 times [2018-11-10 11:20:24,891 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-10 11:20:24,892 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-10 11:20:24,928 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 11:20:24,929 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-10 11:20:24,929 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 11:20:24,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-10 11:20:24,990 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 11:20:24,992 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-10 11:20:24,992 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-11-10 11:20:24,994 INFO L460 AbstractCegarLoop]: Interpolant automaton has 2 states [2018-11-10 11:20:25,004 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2018-11-10 11:20:25,005 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-11-10 11:20:25,007 INFO L87 Difference]: Start difference. First operand 49 states. Second operand 2 states. [2018-11-10 11:20:25,026 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-10 11:20:25,026 INFO L93 Difference]: Finished difference Result 49 states and 52 transitions. [2018-11-10 11:20:25,026 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2018-11-10 11:20:25,028 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 13 [2018-11-10 11:20:25,028 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-10 11:20:25,035 INFO L225 Difference]: With dead ends: 49 [2018-11-10 11:20:25,035 INFO L226 Difference]: Without dead ends: 46 [2018-11-10 11:20:25,036 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-11-10 11:20:25,049 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46 states. [2018-11-10 11:20:25,060 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46 to 46. [2018-11-10 11:20:25,061 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 46 states. [2018-11-10 11:20:25,062 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 49 transitions. [2018-11-10 11:20:25,063 INFO L78 Accepts]: Start accepts. Automaton has 46 states and 49 transitions. Word has length 13 [2018-11-10 11:20:25,063 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-10 11:20:25,063 INFO L481 AbstractCegarLoop]: Abstraction has 46 states and 49 transitions. [2018-11-10 11:20:25,063 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2018-11-10 11:20:25,063 INFO L276 IsEmpty]: Start isEmpty. Operand 46 states and 49 transitions. [2018-11-10 11:20:25,064 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2018-11-10 11:20:25,064 INFO L367 BasicCegarLoop]: Found error trace [2018-11-10 11:20:25,064 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-10 11:20:25,064 INFO L424 AbstractCegarLoop]: === Iteration 2 === [fooErr0ASSERT_VIOLATIONARRAY_INDEX, fooErr2REQUIRES_VIOLATION, fooErr1REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4ENSURES_VIOLATIONMEMORY_LEAK]=== [2018-11-10 11:20:25,064 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-10 11:20:25,064 INFO L82 PathProgramCache]: Analyzing trace with hash -1812590093, now seen corresponding path program 1 times [2018-11-10 11:20:25,064 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-10 11:20:25,065 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-10 11:20:25,066 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 11:20:25,066 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-10 11:20:25,066 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 11:20:25,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-10 11:20:25,120 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 11:20:25,121 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-10 11:20:25,122 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-11-10 11:20:25,123 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-11-10 11:20:25,123 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-11-10 11:20:25,123 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-10 11:20:25,124 INFO L87 Difference]: Start difference. First operand 46 states and 49 transitions. Second operand 3 states. [2018-11-10 11:20:25,195 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-10 11:20:25,196 INFO L93 Difference]: Finished difference Result 67 states and 71 transitions. [2018-11-10 11:20:25,196 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-11-10 11:20:25,196 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 14 [2018-11-10 11:20:25,196 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-10 11:20:25,198 INFO L225 Difference]: With dead ends: 67 [2018-11-10 11:20:25,198 INFO L226 Difference]: Without dead ends: 67 [2018-11-10 11:20:25,199 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 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 11:20:25,199 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 67 states. [2018-11-10 11:20:25,205 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 67 to 50. [2018-11-10 11:20:25,205 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 50 states. [2018-11-10 11:20:25,206 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 53 transitions. [2018-11-10 11:20:25,206 INFO L78 Accepts]: Start accepts. Automaton has 50 states and 53 transitions. Word has length 14 [2018-11-10 11:20:25,207 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-10 11:20:25,207 INFO L481 AbstractCegarLoop]: Abstraction has 50 states and 53 transitions. [2018-11-10 11:20:25,207 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-11-10 11:20:25,207 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 53 transitions. [2018-11-10 11:20:25,207 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2018-11-10 11:20:25,207 INFO L367 BasicCegarLoop]: Found error trace [2018-11-10 11:20:25,207 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-10 11:20:25,208 INFO L424 AbstractCegarLoop]: === Iteration 3 === [fooErr0ASSERT_VIOLATIONARRAY_INDEX, fooErr2REQUIRES_VIOLATION, fooErr1REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4ENSURES_VIOLATIONMEMORY_LEAK]=== [2018-11-10 11:20:25,208 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-10 11:20:25,208 INFO L82 PathProgramCache]: Analyzing trace with hash -267768884, now seen corresponding path program 1 times [2018-11-10 11:20:25,208 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-10 11:20:25,208 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-10 11:20:25,209 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 11:20:25,209 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-10 11:20:25,209 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 11:20:25,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-10 11:20:25,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-10 11:20:25,244 INFO L442 BasicCegarLoop]: Counterexample might be feasible [2018-11-10 11:20:25,266 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 10.11 11:20:25 BoogieIcfgContainer [2018-11-10 11:20:25,266 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-11-10 11:20:25,266 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2018-11-10 11:20:25,266 INFO L271 PluginConnector]: Initializing Witness Printer... [2018-11-10 11:20:25,266 INFO L276 PluginConnector]: Witness Printer initialized [2018-11-10 11:20:25,267 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.11 11:20:24" (3/4) ... [2018-11-10 11:20:25,268 INFO L138 WitnessPrinter]: Generating witness for reachability counterexample [2018-11-10 11:20:25,297 INFO L145 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/working_dir_1744df69-c8b3-4cfb-a211-f3226ad2067f/bin-2019/uautomizer/witness.graphml [2018-11-10 11:20:25,297 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2018-11-10 11:20:25,298 INFO L168 Benchmark]: Toolchain (without parser) took 993.23 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 167.2 MB). Free memory was 959.1 MB in the beginning and 1.1 GB in the end (delta: -142.0 MB). Peak memory consumption was 25.3 MB. Max. memory is 11.5 GB. [2018-11-10 11:20:25,299 INFO L168 Benchmark]: CDTParser took 0.18 ms. Allocated memory is still 1.0 GB. Free memory is still 985.4 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-11-10 11:20:25,300 INFO L168 Benchmark]: CACSL2BoogieTranslator took 194.00 ms. Allocated memory is still 1.0 GB. Free memory was 959.1 MB in the beginning and 948.4 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. [2018-11-10 11:20:25,300 INFO L168 Benchmark]: Boogie Preprocessor took 29.04 ms. Allocated memory is still 1.0 GB. Free memory was 948.4 MB in the beginning and 945.7 MB in the end (delta: 2.7 MB). Peak memory consumption was 2.7 MB. Max. memory is 11.5 GB. [2018-11-10 11:20:25,301 INFO L168 Benchmark]: RCFGBuilder took 282.21 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 167.2 MB). Free memory was 945.7 MB in the beginning and 1.1 GB in the end (delta: -202.0 MB). Peak memory consumption was 19.8 MB. Max. memory is 11.5 GB. [2018-11-10 11:20:25,301 INFO L168 Benchmark]: TraceAbstraction took 453.14 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: 43.4 MB). Peak memory consumption was 43.4 MB. Max. memory is 11.5 GB. [2018-11-10 11:20:25,302 INFO L168 Benchmark]: Witness Printer took 31.12 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: 3.2 MB). Peak memory consumption was 3.2 MB. Max. memory is 11.5 GB. [2018-11-10 11:20:25,305 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.18 ms. Allocated memory is still 1.0 GB. Free memory is still 985.4 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 194.00 ms. Allocated memory is still 1.0 GB. Free memory was 959.1 MB in the beginning and 948.4 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 29.04 ms. Allocated memory is still 1.0 GB. Free memory was 948.4 MB in the beginning and 945.7 MB in the end (delta: 2.7 MB). Peak memory consumption was 2.7 MB. Max. memory is 11.5 GB. * RCFGBuilder took 282.21 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 167.2 MB). Free memory was 945.7 MB in the beginning and 1.1 GB in the end (delta: -202.0 MB). Peak memory consumption was 19.8 MB. Max. memory is 11.5 GB. * TraceAbstraction took 453.14 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: 43.4 MB). Peak memory consumption was 43.4 MB. Max. memory is 11.5 GB. * Witness Printer took 31.12 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: 3.2 MB). Peak memory consumption was 3.2 MB. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 15]: array index can be out of bounds array index can be out of bounds We found a FailurePath: [L21] int i, b[100]; VAL [b={402:0}] [L22] i = 0 VAL [b={402:0}, i=0] [L22] COND TRUE i < 100 VAL [b={402:0}, i=0] [L23] CALL foo(i, b, i + 1) VAL [\old(n)=0, \old(size)=1, b={402:0}] [L13] int a[n], i; [L14] i = 0 VAL [\old(n)=0, \old(size)=1, b={402:0}, b={402:0}, i=0, n=0, size=1] [L14] COND TRUE i < size VAL [\old(n)=0, \old(size)=1, b={402:0}, b={402:0}, i=0, n=0, size=1] [L15] a[i] VAL [\old(n)=0, \old(size)=1, b={402:0}, b={402:0}, i=0, n=0, size=1] - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 49 locations, 8 error locations. UNSAFE Result, 0.4s OverallTime, 3 OverallIterations, 1 TraceHistogramMax, 0.1s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 92 SDtfs, 17 SDslu, 34 SDs, 0 SdLazy, 23 SolverSat, 2 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=50occurred in iteration=2, 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, 17 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 42 NumberOfCodeBlocks, 42 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 25 ConstructedInterpolants, 0 QuantifiedInterpolants, 365 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...