./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/memsafety-ext3/scopes4-2.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version cad46833 Calling Ultimate with: /usr/lib/jvm/java-8-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/working_dir_515cc92b-73ae-482d-bc84-8eb33505d732/bin/utaipan/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/working_dir_515cc92b-73ae-482d-bc84-8eb33505d732/bin/utaipan/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/working_dir_515cc92b-73ae-482d-bc84-8eb33505d732/bin/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/working_dir_515cc92b-73ae-482d-bc84-8eb33505d732/bin/utaipan/config/TaipanMemDerefMemtrack.xml -i ../../sv-benchmarks/c/memsafety-ext3/scopes4-2.c -s /tmp/vcloud-vcloud-master/worker/working_dir_515cc92b-73ae-482d-bc84-8eb33505d732/bin/utaipan/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/working_dir_515cc92b-73ae-482d-bc84-8eb33505d732/bin/utaipan --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 Taipan --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 0.1.24-cad4683 [2019-10-22 11:26:16,830 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-10-22 11:26:16,832 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-10-22 11:26:16,843 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-10-22 11:26:16,844 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-10-22 11:26:16,844 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-10-22 11:26:16,846 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-10-22 11:26:16,848 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-10-22 11:26:16,849 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-10-22 11:26:16,850 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-10-22 11:26:16,856 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-10-22 11:26:16,857 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-10-22 11:26:16,857 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-10-22 11:26:16,858 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-10-22 11:26:16,859 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-10-22 11:26:16,859 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-10-22 11:26:16,860 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-10-22 11:26:16,860 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-10-22 11:26:16,862 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-10-22 11:26:16,865 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-10-22 11:26:16,866 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-10-22 11:26:16,867 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-10-22 11:26:16,868 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-10-22 11:26:16,869 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-10-22 11:26:16,870 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-10-22 11:26:16,873 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-10-22 11:26:16,873 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-10-22 11:26:16,874 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-10-22 11:26:16,874 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-10-22 11:26:16,875 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-10-22 11:26:16,875 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-10-22 11:26:16,876 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-10-22 11:26:16,876 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-10-22 11:26:16,877 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-10-22 11:26:16,877 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-10-22 11:26:16,878 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-10-22 11:26:16,878 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-10-22 11:26:16,878 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-10-22 11:26:16,880 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-10-22 11:26:16,881 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-10-22 11:26:16,881 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-10-22 11:26:16,882 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/working_dir_515cc92b-73ae-482d-bc84-8eb33505d732/bin/utaipan/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Default.epf [2019-10-22 11:26:16,896 INFO L113 SettingsManager]: Loading preferences was successful [2019-10-22 11:26:16,896 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-10-22 11:26:16,897 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2019-10-22 11:26:16,897 INFO L138 SettingsManager]: * User list type=DISABLED [2019-10-22 11:26:16,897 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2019-10-22 11:26:16,898 INFO L138 SettingsManager]: * Explicit value domain=true [2019-10-22 11:26:16,898 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2019-10-22 11:26:16,898 INFO L138 SettingsManager]: * Octagon Domain=false [2019-10-22 11:26:16,898 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2019-10-22 11:26:16,898 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2019-10-22 11:26:16,899 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2019-10-22 11:26:16,899 INFO L138 SettingsManager]: * Interval Domain=false [2019-10-22 11:26:16,900 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-10-22 11:26:16,900 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-10-22 11:26:16,900 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-10-22 11:26:16,900 INFO L138 SettingsManager]: * sizeof long=4 [2019-10-22 11:26:16,901 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2019-10-22 11:26:16,901 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-10-22 11:26:16,901 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-10-22 11:26:16,901 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-10-22 11:26:16,901 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2019-10-22 11:26:16,901 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2019-10-22 11:26:16,901 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2019-10-22 11:26:16,902 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-10-22 11:26:16,902 INFO L138 SettingsManager]: * sizeof long double=12 [2019-10-22 11:26:16,902 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-10-22 11:26:16,902 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-10-22 11:26:16,902 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-10-22 11:26:16,904 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-10-22 11:26:16,904 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-22 11:26:16,904 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-10-22 11:26:16,904 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-10-22 11:26:16,904 INFO L138 SettingsManager]: * Trace refinement strategy=TAIPAN [2019-10-22 11:26:16,905 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-10-22 11:26:16,905 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-10-22 11:26:16,905 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES 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_515cc92b-73ae-482d-bc84-8eb33505d732/bin/utaipan 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 -> Taipan 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 [2019-10-22 11:26:16,948 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-10-22 11:26:16,960 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-10-22 11:26:16,963 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-10-22 11:26:16,965 INFO L271 PluginConnector]: Initializing CDTParser... [2019-10-22 11:26:16,965 INFO L275 PluginConnector]: CDTParser initialized [2019-10-22 11:26:16,966 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/working_dir_515cc92b-73ae-482d-bc84-8eb33505d732/bin/utaipan/../../sv-benchmarks/c/memsafety-ext3/scopes4-2.c [2019-10-22 11:26:17,025 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_515cc92b-73ae-482d-bc84-8eb33505d732/bin/utaipan/data/46bee11b0/3c70f42e484d426cab0da9d620e572de/FLAG3bcb339d5 [2019-10-22 11:26:17,413 INFO L306 CDTParser]: Found 1 translation units. [2019-10-22 11:26:17,414 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/working_dir_515cc92b-73ae-482d-bc84-8eb33505d732/sv-benchmarks/c/memsafety-ext3/scopes4-2.c [2019-10-22 11:26:17,420 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_515cc92b-73ae-482d-bc84-8eb33505d732/bin/utaipan/data/46bee11b0/3c70f42e484d426cab0da9d620e572de/FLAG3bcb339d5 [2019-10-22 11:26:17,430 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/working_dir_515cc92b-73ae-482d-bc84-8eb33505d732/bin/utaipan/data/46bee11b0/3c70f42e484d426cab0da9d620e572de [2019-10-22 11:26:17,433 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-10-22 11:26:17,434 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2019-10-22 11:26:17,435 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-10-22 11:26:17,435 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-10-22 11:26:17,438 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-10-22 11:26:17,439 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.10 11:26:17" (1/1) ... [2019-10-22 11:26:17,441 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@16094150 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:26:17, skipping insertion in model container [2019-10-22 11:26:17,442 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.10 11:26:17" (1/1) ... [2019-10-22 11:26:17,449 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-10-22 11:26:17,466 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-10-22 11:26:17,645 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-22 11:26:17,727 INFO L188 MainTranslator]: Completed pre-run [2019-10-22 11:26:17,744 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-22 11:26:17,760 INFO L192 MainTranslator]: Completed translation [2019-10-22 11:26:17,761 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:26:17 WrapperNode [2019-10-22 11:26:17,761 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-10-22 11:26:17,762 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-10-22 11:26:17,762 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-10-22 11:26:17,762 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-10-22 11:26:17,769 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:26:17" (1/1) ... [2019-10-22 11:26:17,779 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:26:17" (1/1) ... [2019-10-22 11:26:17,799 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-10-22 11:26:17,800 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-10-22 11:26:17,800 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-10-22 11:26:17,800 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-10-22 11:26:17,806 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:26:17" (1/1) ... [2019-10-22 11:26:17,806 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:26:17" (1/1) ... [2019-10-22 11:26:17,808 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:26:17" (1/1) ... [2019-10-22 11:26:17,808 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:26:17" (1/1) ... [2019-10-22 11:26:17,813 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:26:17" (1/1) ... [2019-10-22 11:26:17,814 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:26:17" (1/1) ... [2019-10-22 11:26:17,815 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:26:17" (1/1) ... [2019-10-22 11:26:17,817 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-10-22 11:26:17,817 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-10-22 11:26:17,817 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-10-22 11:26:17,817 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-10-22 11:26:17,818 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:26:17" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_515cc92b-73ae-482d-bc84-8eb33505d732/bin/utaipan/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-22 11:26:17,865 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-10-22 11:26:17,865 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-10-22 11:26:17,865 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-10-22 11:26:17,865 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-10-22 11:26:17,866 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2019-10-22 11:26:17,866 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-10-22 11:26:17,866 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-10-22 11:26:18,199 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-10-22 11:26:18,199 INFO L284 CfgBuilder]: Removed 8 assume(true) statements. [2019-10-22 11:26:18,200 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.10 11:26:18 BoogieIcfgContainer [2019-10-22 11:26:18,200 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-10-22 11:26:18,201 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-10-22 11:26:18,201 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-10-22 11:26:18,204 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-10-22 11:26:18,204 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.10 11:26:17" (1/3) ... [2019-10-22 11:26:18,205 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1de6272b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.10 11:26:18, skipping insertion in model container [2019-10-22 11:26:18,205 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:26:17" (2/3) ... [2019-10-22 11:26:18,206 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1de6272b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.10 11:26:18, skipping insertion in model container [2019-10-22 11:26:18,206 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.10 11:26:18" (3/3) ... [2019-10-22 11:26:18,207 INFO L109 eAbstractionObserver]: Analyzing ICFG scopes4-2.c [2019-10-22 11:26:18,214 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-10-22 11:26:18,219 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 5 error locations. [2019-10-22 11:26:18,225 INFO L249 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2019-10-22 11:26:18,244 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-10-22 11:26:18,244 INFO L374 AbstractCegarLoop]: Hoare is false [2019-10-22 11:26:18,244 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-10-22 11:26:18,245 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-10-22 11:26:18,245 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-10-22 11:26:18,245 INFO L378 AbstractCegarLoop]: Difference is false [2019-10-22 11:26:18,245 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-10-22 11:26:18,245 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-10-22 11:26:18,260 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states. [2019-10-22 11:26:18,271 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2019-10-22 11:26:18,271 INFO L372 BasicCegarLoop]: Found error trace [2019-10-22 11:26:18,271 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1] [2019-10-22 11:26:18,273 INFO L410 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr3REQUIRES_VIOLATION]=== [2019-10-22 11:26:18,277 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 11:26:18,277 INFO L82 PathProgramCache]: Analyzing trace with hash 29857, now seen corresponding path program 1 times [2019-10-22 11:26:18,284 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-22 11:26:18,285 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1666638023] [2019-10-22 11:26:18,285 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 11:26:18,285 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 11:26:18,285 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-22 11:26:18,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 11:26:18,397 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-22 11:26:18,397 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1666638023] [2019-10-22 11:26:18,398 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-22 11:26:18,398 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-10-22 11:26:18,399 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [59013190] [2019-10-22 11:26:18,403 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-22 11:26:18,404 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-22 11:26:18,414 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-22 11:26:18,415 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-22 11:26:18,417 INFO L87 Difference]: Start difference. First operand 16 states. Second operand 3 states. [2019-10-22 11:26:18,453 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-22 11:26:18,454 INFO L93 Difference]: Finished difference Result 15 states and 14 transitions. [2019-10-22 11:26:18,454 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-22 11:26:18,456 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 3 [2019-10-22 11:26:18,456 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-22 11:26:18,463 INFO L225 Difference]: With dead ends: 15 [2019-10-22 11:26:18,463 INFO L226 Difference]: Without dead ends: 13 [2019-10-22 11:26:18,465 INFO L600 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 [2019-10-22 11:26:18,479 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13 states. [2019-10-22 11:26:18,487 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13 to 13. [2019-10-22 11:26:18,488 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2019-10-22 11:26:18,488 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 12 transitions. [2019-10-22 11:26:18,489 INFO L78 Accepts]: Start accepts. Automaton has 13 states and 12 transitions. Word has length 3 [2019-10-22 11:26:18,489 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-22 11:26:18,490 INFO L462 AbstractCegarLoop]: Abstraction has 13 states and 12 transitions. [2019-10-22 11:26:18,490 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-22 11:26:18,490 INFO L276 IsEmpty]: Start isEmpty. Operand 13 states and 12 transitions. [2019-10-22 11:26:18,490 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2019-10-22 11:26:18,490 INFO L372 BasicCegarLoop]: Found error trace [2019-10-22 11:26:18,491 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1] [2019-10-22 11:26:18,491 INFO L410 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr3REQUIRES_VIOLATION]=== [2019-10-22 11:26:18,492 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 11:26:18,492 INFO L82 PathProgramCache]: Analyzing trace with hash 29858, now seen corresponding path program 1 times [2019-10-22 11:26:18,493 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-22 11:26:18,493 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [864440928] [2019-10-22 11:26:18,493 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 11:26:18,493 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 11:26:18,493 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-22 11:26:18,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 11:26:18,531 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-22 11:26:18,531 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [864440928] [2019-10-22 11:26:18,531 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-22 11:26:18,532 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-10-22 11:26:18,532 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1329589840] [2019-10-22 11:26:18,533 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-22 11:26:18,533 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-22 11:26:18,534 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-22 11:26:18,534 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-22 11:26:18,534 INFO L87 Difference]: Start difference. First operand 13 states and 12 transitions. Second operand 3 states. [2019-10-22 11:26:18,548 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-22 11:26:18,548 INFO L93 Difference]: Finished difference Result 12 states and 11 transitions. [2019-10-22 11:26:18,548 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-22 11:26:18,549 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 3 [2019-10-22 11:26:18,549 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-22 11:26:18,549 INFO L225 Difference]: With dead ends: 12 [2019-10-22 11:26:18,549 INFO L226 Difference]: Without dead ends: 12 [2019-10-22 11:26:18,550 INFO L600 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 [2019-10-22 11:26:18,550 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12 states. [2019-10-22 11:26:18,551 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12 to 12. [2019-10-22 11:26:18,551 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2019-10-22 11:26:18,552 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 11 transitions. [2019-10-22 11:26:18,552 INFO L78 Accepts]: Start accepts. Automaton has 12 states and 11 transitions. Word has length 3 [2019-10-22 11:26:18,552 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-22 11:26:18,552 INFO L462 AbstractCegarLoop]: Abstraction has 12 states and 11 transitions. [2019-10-22 11:26:18,552 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-22 11:26:18,553 INFO L276 IsEmpty]: Start isEmpty. Operand 12 states and 11 transitions. [2019-10-22 11:26:18,553 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2019-10-22 11:26:18,553 INFO L372 BasicCegarLoop]: Found error trace [2019-10-22 11:26:18,553 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2019-10-22 11:26:18,553 INFO L410 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr3REQUIRES_VIOLATION]=== [2019-10-22 11:26:18,554 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 11:26:18,554 INFO L82 PathProgramCache]: Analyzing trace with hash 1803025956, now seen corresponding path program 1 times [2019-10-22 11:26:18,554 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-22 11:26:18,554 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1870179654] [2019-10-22 11:26:18,554 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 11:26:18,555 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 11:26:18,555 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-22 11:26:18,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-10-22 11:26:18,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-10-22 11:26:18,612 INFO L168 tionRefinementEngine]: Strategy TAIPAN found a feasible trace [2019-10-22 11:26:18,613 INFO L445 BasicCegarLoop]: Counterexample might be feasible [2019-10-22 11:26:18,630 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.10 11:26:18 BoogieIcfgContainer [2019-10-22 11:26:18,630 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-10-22 11:26:18,631 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-10-22 11:26:18,631 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-10-22 11:26:18,631 INFO L275 PluginConnector]: Witness Printer initialized [2019-10-22 11:26:18,631 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.10 11:26:18" (3/4) ... [2019-10-22 11:26:18,634 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2019-10-22 11:26:18,667 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/working_dir_515cc92b-73ae-482d-bc84-8eb33505d732/bin/utaipan/witness.graphml [2019-10-22 11:26:18,668 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-10-22 11:26:18,670 INFO L168 Benchmark]: Toolchain (without parser) took 1235.28 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 174.1 MB). Free memory was 941.0 MB in the beginning and 1.1 GB in the end (delta: -171.9 MB). Peak memory consumption was 2.2 MB. Max. memory is 11.5 GB. [2019-10-22 11:26:18,670 INFO L168 Benchmark]: CDTParser took 0.18 ms. Allocated memory is still 1.0 GB. Free memory is still 963.8 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-10-22 11:26:18,671 INFO L168 Benchmark]: CACSL2BoogieTranslator took 326.41 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 174.1 MB). Free memory was 941.0 MB in the beginning and 1.2 GB in the end (delta: -227.8 MB). Peak memory consumption was 23.2 MB. Max. memory is 11.5 GB. [2019-10-22 11:26:18,671 INFO L168 Benchmark]: Boogie Procedure Inliner took 38.11 ms. Allocated memory is still 1.2 GB. Free memory is still 1.2 GB. There was no memory consumed. Max. memory is 11.5 GB. [2019-10-22 11:26:18,672 INFO L168 Benchmark]: Boogie Preprocessor took 17.08 ms. Allocated memory is still 1.2 GB. Free memory is still 1.2 GB. There was no memory consumed. Max. memory is 11.5 GB. [2019-10-22 11:26:18,672 INFO L168 Benchmark]: RCFGBuilder took 383.35 ms. Allocated memory is still 1.2 GB. Free memory was 1.2 GB in the beginning and 1.1 GB in the end (delta: 23.7 MB). Peak memory consumption was 23.7 MB. Max. memory is 11.5 GB. [2019-10-22 11:26:18,673 INFO L168 Benchmark]: TraceAbstraction took 429.13 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: 26.9 MB). Peak memory consumption was 26.9 MB. Max. memory is 11.5 GB. [2019-10-22 11:26:18,673 INFO L168 Benchmark]: Witness Printer took 37.13 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: 5.4 MB). Peak memory consumption was 5.4 MB. Max. memory is 11.5 GB. [2019-10-22 11:26:18,679 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.18 ms. Allocated memory is still 1.0 GB. Free memory is still 963.8 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 326.41 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 174.1 MB). Free memory was 941.0 MB in the beginning and 1.2 GB in the end (delta: -227.8 MB). Peak memory consumption was 23.2 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 38.11 ms. Allocated memory is still 1.2 GB. Free memory is still 1.2 GB. There was no memory consumed. Max. memory is 11.5 GB. * Boogie Preprocessor took 17.08 ms. Allocated memory is still 1.2 GB. Free memory is still 1.2 GB. There was no memory consumed. Max. memory is 11.5 GB. * RCFGBuilder took 383.35 ms. Allocated memory is still 1.2 GB. Free memory was 1.2 GB in the beginning and 1.1 GB in the end (delta: 23.7 MB). Peak memory consumption was 23.7 MB. Max. memory is 11.5 GB. * TraceAbstraction took 429.13 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: 26.9 MB). Peak memory consumption was 26.9 MB. Max. memory is 11.5 GB. * Witness Printer took 37.13 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: 5.4 MB). Peak memory consumption was 5.4 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: [L12] int arr[123]; [L5] int arr[1024]; [L6] arr[194] = 13 [L7] return arr + 1; [L7] return arr + 1; [L13] return foo2(); [L17] int *a = foo(); [L18] \read(*a) - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 16 locations, 5 error locations. Result: UNSAFE, OverallTime: 0.3s, OverallIterations: 3, TraceHistogramMax: 1, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, HoareTripleCheckerStatistics: 20 SDtfs, 3 SDslu, 10 SDs, 0 SdLazy, 15 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=16occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 2 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 13 NumberOfCodeBlocks, 13 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 4 ConstructedInterpolants, 0 QuantifiedInterpolants, 32 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 2 InterpolantComputations, 2 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! Received shutdown request...