./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/verifythis/elimination_max_rec_onepoint.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 6b5699aa Using bit-precise analysis Retrying with bit-precise analysis Calling Ultimate with: /usr/lib/jvm/java-8-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/run_dir_1a3c3db3-72f6-43e2-b877-e6636982c03a/bin/utaipan/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/run_dir_1a3c3db3-72f6-43e2-b877-e6636982c03a/bin/utaipan/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_1a3c3db3-72f6-43e2-b877-e6636982c03a/bin/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_1a3c3db3-72f6-43e2-b877-e6636982c03a/bin/utaipan/config/TaipanMemDerefMemtrack.xml -i ../../sv-benchmarks/c/verifythis/elimination_max_rec_onepoint.c -s /tmp/vcloud-vcloud-master/worker/run_dir_1a3c3db3-72f6-43e2-b877-e6636982c03a/bin/utaipan/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_1a3c3db3-72f6-43e2-b877-e6636982c03a/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 f1dcdcb191cc3a70c9cb7bce226f0263f581cc07 ...................................................................................................................................................................................................................................................................................................................................................................... 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 --- Skipped default analysis because property is memsafety ### Bit-precise run ### This is Ultimate 0.1.24-6b5699a [2019-11-26 02:40:10,864 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-26 02:40:10,866 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-26 02:40:10,876 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-11-26 02:40:10,876 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-11-26 02:40:10,877 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-11-26 02:40:10,878 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-11-26 02:40:10,880 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-11-26 02:40:10,882 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-11-26 02:40:10,883 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-11-26 02:40:10,884 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-11-26 02:40:10,885 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-11-26 02:40:10,885 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-26 02:40:10,886 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-26 02:40:10,887 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-26 02:40:10,888 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-26 02:40:10,889 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-26 02:40:10,890 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-26 02:40:10,891 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-26 02:40:10,897 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-26 02:40:10,899 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-26 02:40:10,900 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-26 02:40:10,901 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-26 02:40:10,902 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-26 02:40:10,904 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-11-26 02:40:10,905 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-11-26 02:40:10,905 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-11-26 02:40:10,906 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-11-26 02:40:10,907 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-11-26 02:40:10,907 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-11-26 02:40:10,908 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-11-26 02:40:10,908 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-11-26 02:40:10,909 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-11-26 02:40:10,910 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-11-26 02:40:10,911 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-11-26 02:40:10,911 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-11-26 02:40:10,912 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-11-26 02:40:10,916 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-11-26 02:40:10,916 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-26 02:40:10,920 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-26 02:40:10,921 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-26 02:40:10,922 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_1a3c3db3-72f6-43e2-b877-e6636982c03a/bin/utaipan/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Bitvector.epf [2019-11-26 02:40:10,943 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-26 02:40:10,943 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-26 02:40:10,944 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2019-11-26 02:40:10,944 INFO L138 SettingsManager]: * User list type=DISABLED [2019-11-26 02:40:10,945 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2019-11-26 02:40:10,945 INFO L138 SettingsManager]: * Explicit value domain=true [2019-11-26 02:40:10,945 INFO L138 SettingsManager]: * Octagon Domain=false [2019-11-26 02:40:10,945 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2019-11-26 02:40:10,945 INFO L138 SettingsManager]: * Interval Domain=false [2019-11-26 02:40:10,946 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-11-26 02:40:10,947 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-11-26 02:40:10,947 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-26 02:40:10,947 INFO L138 SettingsManager]: * sizeof long=4 [2019-11-26 02:40:10,948 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2019-11-26 02:40:10,948 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-11-26 02:40:10,948 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-11-26 02:40:10,948 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-26 02:40:10,948 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2019-11-26 02:40:10,949 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2019-11-26 02:40:10,949 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2019-11-26 02:40:10,949 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-11-26 02:40:10,949 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2019-11-26 02:40:10,949 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2019-11-26 02:40:10,949 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2019-11-26 02:40:10,950 INFO L138 SettingsManager]: * sizeof long double=12 [2019-11-26 02:40:10,950 INFO L138 SettingsManager]: * Use constant arrays=true [2019-11-26 02:40:10,950 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-26 02:40:10,950 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-11-26 02:40:10,950 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-11-26 02:40:10,950 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-11-26 02:40:10,951 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-26 02:40:10,951 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-26 02:40:10,951 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-11-26 02:40:10,951 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2019-11-26 02:40:10,952 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --rewrite-divk --print-success --lang smt [2019-11-26 02:40:10,952 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-11-26 02:40:10,952 INFO L138 SettingsManager]: * Logic for external solver=AUFBV Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_1a3c3db3-72f6-43e2-b877-e6636982c03a/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 -> f1dcdcb191cc3a70c9cb7bce226f0263f581cc07 [2019-11-26 02:40:11,143 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-26 02:40:11,152 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-26 02:40:11,156 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-26 02:40:11,157 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-26 02:40:11,158 INFO L275 PluginConnector]: CDTParser initialized [2019-11-26 02:40:11,158 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_1a3c3db3-72f6-43e2-b877-e6636982c03a/bin/utaipan/../../sv-benchmarks/c/verifythis/elimination_max_rec_onepoint.c [2019-11-26 02:40:11,217 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_1a3c3db3-72f6-43e2-b877-e6636982c03a/bin/utaipan/data/b329e4818/dbf4834d168e4987ab8fa987e070c13c/FLAG50f6c04d2 [2019-11-26 02:40:11,607 INFO L306 CDTParser]: Found 1 translation units. [2019-11-26 02:40:11,608 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_1a3c3db3-72f6-43e2-b877-e6636982c03a/sv-benchmarks/c/verifythis/elimination_max_rec_onepoint.c [2019-11-26 02:40:11,614 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_1a3c3db3-72f6-43e2-b877-e6636982c03a/bin/utaipan/data/b329e4818/dbf4834d168e4987ab8fa987e070c13c/FLAG50f6c04d2 [2019-11-26 02:40:11,962 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_1a3c3db3-72f6-43e2-b877-e6636982c03a/bin/utaipan/data/b329e4818/dbf4834d168e4987ab8fa987e070c13c [2019-11-26 02:40:11,965 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-26 02:40:11,966 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2019-11-26 02:40:11,967 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-26 02:40:11,967 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-26 02:40:11,971 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-26 02:40:11,971 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.11 02:40:11" (1/1) ... [2019-11-26 02:40:11,974 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1fc286a5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:40:11, skipping insertion in model container [2019-11-26 02:40:11,974 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.11 02:40:11" (1/1) ... [2019-11-26 02:40:11,981 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2019-11-26 02:40:11,996 INFO L179 MainTranslator]: Built tables and reachable declarations [2019-11-26 02:40:12,211 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-26 02:40:12,227 INFO L201 MainTranslator]: Completed pre-run [2019-11-26 02:40:12,251 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-26 02:40:12,267 INFO L205 MainTranslator]: Completed translation [2019-11-26 02:40:12,268 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:40:12 WrapperNode [2019-11-26 02:40:12,268 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-26 02:40:12,269 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-11-26 02:40:12,269 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-11-26 02:40:12,269 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-11-26 02:40:12,277 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:40:12" (1/1) ... [2019-11-26 02:40:12,285 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:40:12" (1/1) ... [2019-11-26 02:40:12,308 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-11-26 02:40:12,309 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-26 02:40:12,309 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-26 02:40:12,309 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-26 02:40:12,318 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:40:12" (1/1) ... [2019-11-26 02:40:12,318 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:40:12" (1/1) ... [2019-11-26 02:40:12,322 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:40:12" (1/1) ... [2019-11-26 02:40:12,322 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:40:12" (1/1) ... [2019-11-26 02:40:12,329 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:40:12" (1/1) ... [2019-11-26 02:40:12,332 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:40:12" (1/1) ... [2019-11-26 02:40:12,333 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:40:12" (1/1) ... [2019-11-26 02:40:12,336 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-26 02:40:12,337 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-26 02:40:12,337 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-26 02:40:12,337 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-26 02:40:12,338 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:40:12" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_1a3c3db3-72f6-43e2-b877-e6636982c03a/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 [2019-11-26 02:40:12,398 INFO L130 BoogieDeclarations]: Found specification of procedure check [2019-11-26 02:40:12,398 INFO L138 BoogieDeclarations]: Found implementation of procedure check [2019-11-26 02:40:12,398 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2019-11-26 02:40:12,398 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2019-11-26 02:40:12,399 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-26 02:40:12,399 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-26 02:40:12,399 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-11-26 02:40:12,936 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-26 02:40:12,937 INFO L284 CfgBuilder]: Removed 12 assume(true) statements. [2019-11-26 02:40:12,938 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.11 02:40:12 BoogieIcfgContainer [2019-11-26 02:40:12,938 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-26 02:40:12,939 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-11-26 02:40:12,939 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-11-26 02:40:12,942 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-11-26 02:40:12,942 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 26.11 02:40:11" (1/3) ... [2019-11-26 02:40:12,943 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@d6054c5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.11 02:40:12, skipping insertion in model container [2019-11-26 02:40:12,943 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:40:12" (2/3) ... [2019-11-26 02:40:12,944 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@d6054c5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.11 02:40:12, skipping insertion in model container [2019-11-26 02:40:12,944 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.11 02:40:12" (3/3) ... [2019-11-26 02:40:12,945 INFO L109 eAbstractionObserver]: Analyzing ICFG elimination_max_rec_onepoint.c [2019-11-26 02:40:12,952 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-11-26 02:40:12,958 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 16 error locations. [2019-11-26 02:40:12,965 INFO L249 AbstractCegarLoop]: Starting to check reachability of 16 error locations. [2019-11-26 02:40:12,980 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-11-26 02:40:12,980 INFO L374 AbstractCegarLoop]: Hoare is false [2019-11-26 02:40:12,980 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-11-26 02:40:12,980 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-26 02:40:12,980 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-26 02:40:12,980 INFO L378 AbstractCegarLoop]: Difference is false [2019-11-26 02:40:12,980 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-26 02:40:12,981 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-11-26 02:40:12,995 INFO L276 IsEmpty]: Start isEmpty. Operand 49 states. [2019-11-26 02:40:13,004 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2019-11-26 02:40:13,004 INFO L402 BasicCegarLoop]: Found error trace [2019-11-26 02:40:13,005 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-26 02:40:13,005 INFO L410 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr7ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr6ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr5ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr2REQUIRES_VIOLATION, checkErr2REQUIRES_VIOLATION, checkErr3REQUIRES_VIOLATION, checkErr4REQUIRES_VIOLATION, checkErr5REQUIRES_VIOLATION, checkErr0REQUIRES_VIOLATION, checkErr6REQUIRES_VIOLATION, checkErr1REQUIRES_VIOLATION, checkErr7REQUIRES_VIOLATION]=== [2019-11-26 02:40:13,010 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-26 02:40:13,011 INFO L82 PathProgramCache]: Analyzing trace with hash 368825020, now seen corresponding path program 1 times [2019-11-26 02:40:13,021 INFO L163 FreeRefinementEngine]: Executing refinement strategy WALRUS [2019-11-26 02:40:13,021 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleCvc4 [475375329] [2019-11-26 02:40:13,022 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_1a3c3db3-72f6-43e2-b877-e6636982c03a/bin/utaipan/cvc4 Starting monitored process 2 with cvc4 --incremental --print-success --lang smt --rewrite-divk (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-11-26 02:40:13,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-26 02:40:13,124 INFO L255 TraceCheckSpWp]: Trace formula consists of 45 conjuncts, 1 conjunts are in the unsatisfiable core [2019-11-26 02:40:13,128 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-26 02:40:13,142 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-26 02:40:13,142 INFO L320 TraceCheckSpWp]: Computing backward predicates... [2019-11-26 02:40:13,145 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-26 02:40:13,146 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [475375329] [2019-11-26 02:40:13,146 INFO L220 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-11-26 02:40:13,147 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2019-11-26 02:40:13,147 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [562866944] [2019-11-26 02:40:13,151 INFO L442 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-11-26 02:40:13,151 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2019-11-26 02:40:13,164 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-11-26 02:40:13,165 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-11-26 02:40:13,167 INFO L87 Difference]: Start difference. First operand 49 states. Second operand 2 states. [2019-11-26 02:40:13,182 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-26 02:40:13,182 INFO L93 Difference]: Finished difference Result 49 states and 51 transitions. [2019-11-26 02:40:13,182 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-11-26 02:40:13,183 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 9 [2019-11-26 02:40:13,183 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-26 02:40:13,191 INFO L225 Difference]: With dead ends: 49 [2019-11-26 02:40:13,191 INFO L226 Difference]: Without dead ends: 47 [2019-11-26 02:40:13,192 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-11-26 02:40:13,206 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47 states. [2019-11-26 02:40:13,222 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47 to 47. [2019-11-26 02:40:13,223 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 47 states. [2019-11-26 02:40:13,225 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 49 transitions. [2019-11-26 02:40:13,226 INFO L78 Accepts]: Start accepts. Automaton has 47 states and 49 transitions. Word has length 9 [2019-11-26 02:40:13,226 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-26 02:40:13,226 INFO L462 AbstractCegarLoop]: Abstraction has 47 states and 49 transitions. [2019-11-26 02:40:13,227 INFO L463 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-11-26 02:40:13,227 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states and 49 transitions. [2019-11-26 02:40:13,228 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2019-11-26 02:40:13,228 INFO L402 BasicCegarLoop]: Found error trace [2019-11-26 02:40:13,228 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-26 02:40:13,429 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-11-26 02:40:13,429 INFO L410 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr7ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr6ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr5ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr2REQUIRES_VIOLATION, checkErr2REQUIRES_VIOLATION, checkErr3REQUIRES_VIOLATION, checkErr4REQUIRES_VIOLATION, checkErr5REQUIRES_VIOLATION, checkErr0REQUIRES_VIOLATION, checkErr6REQUIRES_VIOLATION, checkErr1REQUIRES_VIOLATION, checkErr7REQUIRES_VIOLATION]=== [2019-11-26 02:40:13,429 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-26 02:40:13,430 INFO L82 PathProgramCache]: Analyzing trace with hash 368826942, now seen corresponding path program 1 times [2019-11-26 02:40:13,430 INFO L163 FreeRefinementEngine]: Executing refinement strategy WALRUS [2019-11-26 02:40:13,431 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleCvc4 [2129000908] [2019-11-26 02:40:13,431 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_1a3c3db3-72f6-43e2-b877-e6636982c03a/bin/utaipan/cvc4 Starting monitored process 3 with cvc4 --incremental --print-success --lang smt --rewrite-divk (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-11-26 02:40:13,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-26 02:40:13,527 INFO L255 TraceCheckSpWp]: Trace formula consists of 45 conjuncts, 5 conjunts are in the unsatisfiable core [2019-11-26 02:40:13,528 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-26 02:40:13,573 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2019-11-26 02:40:13,574 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-26 02:40:13,581 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-26 02:40:13,581 INFO L496 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-11-26 02:40:13,581 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:6, output treesize:5 [2019-11-26 02:40:13,653 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-26 02:40:13,653 INFO L320 TraceCheckSpWp]: Computing backward predicates... [2019-11-26 02:40:13,664 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-26 02:40:13,664 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [2129000908] [2019-11-26 02:40:13,664 INFO L220 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-11-26 02:40:13,665 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 5 [2019-11-26 02:40:13,665 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [993391086] [2019-11-26 02:40:13,666 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-11-26 02:40:13,666 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2019-11-26 02:40:13,667 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-11-26 02:40:13,667 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2019-11-26 02:40:13,667 INFO L87 Difference]: Start difference. First operand 47 states and 49 transitions. Second operand 6 states. [2019-11-26 02:40:13,950 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-26 02:40:13,951 INFO L93 Difference]: Finished difference Result 40 states and 42 transitions. [2019-11-26 02:40:13,952 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-11-26 02:40:13,952 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 9 [2019-11-26 02:40:13,952 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-26 02:40:13,953 INFO L225 Difference]: With dead ends: 40 [2019-11-26 02:40:13,953 INFO L226 Difference]: Without dead ends: 40 [2019-11-26 02:40:13,954 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 11 SyntacticMatches, 1 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2019-11-26 02:40:13,955 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40 states. [2019-11-26 02:40:13,958 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40 to 40. [2019-11-26 02:40:13,958 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 40 states. [2019-11-26 02:40:13,960 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 42 transitions. [2019-11-26 02:40:13,960 INFO L78 Accepts]: Start accepts. Automaton has 40 states and 42 transitions. Word has length 9 [2019-11-26 02:40:13,960 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-26 02:40:13,961 INFO L462 AbstractCegarLoop]: Abstraction has 40 states and 42 transitions. [2019-11-26 02:40:13,961 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-11-26 02:40:13,961 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 42 transitions. [2019-11-26 02:40:13,961 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2019-11-26 02:40:13,962 INFO L402 BasicCegarLoop]: Found error trace [2019-11-26 02:40:13,962 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-26 02:40:14,164 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-11-26 02:40:14,172 INFO L410 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr7ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr6ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr5ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr2REQUIRES_VIOLATION, checkErr2REQUIRES_VIOLATION, checkErr3REQUIRES_VIOLATION, checkErr4REQUIRES_VIOLATION, checkErr5REQUIRES_VIOLATION, checkErr0REQUIRES_VIOLATION, checkErr6REQUIRES_VIOLATION, checkErr1REQUIRES_VIOLATION, checkErr7REQUIRES_VIOLATION]=== [2019-11-26 02:40:14,173 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-26 02:40:14,173 INFO L82 PathProgramCache]: Analyzing trace with hash 368826943, now seen corresponding path program 1 times [2019-11-26 02:40:14,174 INFO L163 FreeRefinementEngine]: Executing refinement strategy WALRUS [2019-11-26 02:40:14,174 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleCvc4 [1799826890] [2019-11-26 02:40:14,174 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_1a3c3db3-72f6-43e2-b877-e6636982c03a/bin/utaipan/cvc4 Starting monitored process 4 with cvc4 --incremental --print-success --lang smt --rewrite-divk (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-11-26 02:40:14,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-26 02:40:14,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-26 02:40:14,354 INFO L174 FreeRefinementEngine]: Strategy WALRUS found a feasible trace [2019-11-26 02:40:14,354 INFO L475 BasicCegarLoop]: Counterexample might be feasible [2019-11-26 02:40:14,554 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-11-26 02:40:14,563 WARN L417 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.meminit_#ptr : $Pointer$ not handled [2019-11-26 02:40:14,563 WARN L417 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.meminit_#ptr : $Pointer$ not handled [2019-11-26 02:40:14,564 WARN L417 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.meminit_#ptr : $Pointer$ not handled [2019-11-26 02:40:14,564 WARN L417 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.meminit_#ptr : $Pointer$ not handled [2019-11-26 02:40:14,579 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 26.11 02:40:14 BoogieIcfgContainer [2019-11-26 02:40:14,579 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-11-26 02:40:14,579 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-11-26 02:40:14,579 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-11-26 02:40:14,580 INFO L275 PluginConnector]: Witness Printer initialized [2019-11-26 02:40:14,580 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.11 02:40:12" (3/4) ... [2019-11-26 02:40:14,582 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2019-11-26 02:40:14,584 WARN L417 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.meminit_#ptr : $Pointer$ not handled [2019-11-26 02:40:14,584 WARN L417 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.meminit_#ptr : $Pointer$ not handled [2019-11-26 02:40:14,584 WARN L417 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.meminit_#ptr : $Pointer$ not handled [2019-11-26 02:40:14,584 WARN L417 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.meminit_#ptr : $Pointer$ not handled [2019-11-26 02:40:14,620 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_1a3c3db3-72f6-43e2-b877-e6636982c03a/bin/utaipan/witness.graphml [2019-11-26 02:40:14,620 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-11-26 02:40:14,621 INFO L168 Benchmark]: Toolchain (without parser) took 2655.23 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 126.9 MB). Free memory was 950.0 MB in the beginning and 1.0 GB in the end (delta: -53.5 MB). Peak memory consumption was 73.4 MB. Max. memory is 11.5 GB. [2019-11-26 02:40:14,622 INFO L168 Benchmark]: CDTParser took 0.21 ms. Allocated memory is still 1.0 GB. Free memory is still 967.5 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-26 02:40:14,623 INFO L168 Benchmark]: CACSL2BoogieTranslator took 301.41 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 126.9 MB). Free memory was 950.0 MB in the beginning and 1.1 GB in the end (delta: -166.4 MB). Peak memory consumption was 23.1 MB. Max. memory is 11.5 GB. [2019-11-26 02:40:14,623 INFO L168 Benchmark]: Boogie Procedure Inliner took 39.63 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-26 02:40:14,623 INFO L168 Benchmark]: Boogie Preprocessor took 28.04 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-26 02:40:14,624 INFO L168 Benchmark]: RCFGBuilder took 601.21 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: 28.4 MB). Peak memory consumption was 28.4 MB. Max. memory is 11.5 GB. [2019-11-26 02:40:14,624 INFO L168 Benchmark]: TraceAbstraction took 1639.97 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.0 GB in the end (delta: 84.5 MB). Peak memory consumption was 84.5 MB. Max. memory is 11.5 GB. [2019-11-26 02:40:14,625 INFO L168 Benchmark]: Witness Printer took 40.91 ms. Allocated memory is still 1.2 GB. Free memory is still 1.0 GB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-26 02:40:14,628 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.21 ms. Allocated memory is still 1.0 GB. Free memory is still 967.5 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 301.41 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 126.9 MB). Free memory was 950.0 MB in the beginning and 1.1 GB in the end (delta: -166.4 MB). Peak memory consumption was 23.1 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 39.63 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. * Boogie Preprocessor took 28.04 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. * RCFGBuilder took 601.21 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: 28.4 MB). Peak memory consumption was 28.4 MB. Max. memory is 11.5 GB. * TraceAbstraction took 1639.97 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.0 GB in the end (delta: 84.5 MB). Peak memory consumption was 84.5 MB. Max. memory is 11.5 GB. * Witness Printer took 40.91 ms. Allocated memory is still 1.2 GB. Free memory is still 1.0 GB. There was no memory consumed. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.boogie.preprocessor: - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.meminit_#ptr : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.meminit_#ptr : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.meminit_#ptr : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.meminit_#ptr : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.meminit_#ptr : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.meminit_#ptr : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.meminit_#ptr : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.meminit_#ptr : $Pointer$ not handled * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 21]: pointer dereference may fail pointer dereference may fail We found a FailurePath: [L36] int n = __VERIFIER_nondet_int(); [L38] int i = __VERIFIER_nondet_int(); [L41] int *a = calloc(n, sizeof(int)); [L42] CALL check(0, n-1, a, i, n) [L12] COND FALSE !(x >= y) [L6] COND FALSE !(!cond) [L18] int x0 = x; [L19] int y0 = y; [L21] a[x] - StatisticsResult: Ultimate Automizer benchmark data CFG has 2 procedures, 49 locations, 16 error locations. Result: UNSAFE, OverallTime: 1.5s, OverallIterations: 3, TraceHistogramMax: 1, AutomataDifference: 0.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, HoareTripleCheckerStatistics: 74 SDtfs, 63 SDslu, 36 SDs, 0 SdLazy, 76 SolverSat, 11 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.2s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 34 GetRequests, 27 SyntacticMatches, 1 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=49occurred 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, 0.1s SatisfiabilityAnalysisTime, 0.1s InterpolantComputationTime, 27 NumberOfCodeBlocks, 27 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 32 ConstructedInterpolants, 0 QuantifiedInterpolants, 896 SizeOfPredicates, 2 NumberOfNonLiveVariables, 90 ConjunctsInSsa, 6 ConjunctsInUnsatCore, 4 InterpolantComputations, 4 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...