./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/array-memsafety/openbsd_cstrnlen-alloca-1.i --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_8de3fd29-7237-4dd4-9159-b4adb36cf6dc/bin/utaipan/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/working_dir_8de3fd29-7237-4dd4-9159-b4adb36cf6dc/bin/utaipan/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/working_dir_8de3fd29-7237-4dd4-9159-b4adb36cf6dc/bin/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/working_dir_8de3fd29-7237-4dd4-9159-b4adb36cf6dc/bin/utaipan/config/TaipanMemDerefMemtrack.xml -i ../../sv-benchmarks/c/array-memsafety/openbsd_cstrnlen-alloca-1.i -s /tmp/vcloud-vcloud-master/worker/working_dir_8de3fd29-7237-4dd4-9159-b4adb36cf6dc/bin/utaipan/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/working_dir_8de3fd29-7237-4dd4-9159-b4adb36cf6dc/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 7ac509d7b3f1ef173e01ced3ce9249a58ee1c04d ....................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally 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/working_dir_8de3fd29-7237-4dd4-9159-b4adb36cf6dc/bin/utaipan/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/working_dir_8de3fd29-7237-4dd4-9159-b4adb36cf6dc/bin/utaipan/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/working_dir_8de3fd29-7237-4dd4-9159-b4adb36cf6dc/bin/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/working_dir_8de3fd29-7237-4dd4-9159-b4adb36cf6dc/bin/utaipan/config/TaipanMemDerefMemtrack.xml -i ../../sv-benchmarks/c/array-memsafety/openbsd_cstrnlen-alloca-1.i -s /tmp/vcloud-vcloud-master/worker/working_dir_8de3fd29-7237-4dd4-9159-b4adb36cf6dc/bin/utaipan/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/working_dir_8de3fd29-7237-4dd4-9159-b4adb36cf6dc/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 7ac509d7b3f1ef173e01ced3ce9249a58ee1c04d .................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: ERROR: ExceptionOrErrorResult: SMTLIBException: Sort FloatRoundingMode not declared --- Real Ultimate output --- This is Ultimate 0.1.24-cad4683 [2019-10-22 11:25:48,828 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-10-22 11:25:48,831 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-10-22 11:25:48,840 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-10-22 11:25:48,841 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-10-22 11:25:48,842 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-10-22 11:25:48,843 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-10-22 11:25:48,845 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-10-22 11:25:48,846 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-10-22 11:25:48,847 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-10-22 11:25:48,848 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-10-22 11:25:48,852 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-10-22 11:25:48,861 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-10-22 11:25:48,862 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-10-22 11:25:48,862 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-10-22 11:25:48,863 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-10-22 11:25:48,864 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-10-22 11:25:48,865 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-10-22 11:25:48,866 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-10-22 11:25:48,870 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-10-22 11:25:48,874 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-10-22 11:25:48,875 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-10-22 11:25:48,876 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-10-22 11:25:48,877 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-10-22 11:25:48,883 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-10-22 11:25:48,883 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-10-22 11:25:48,883 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-10-22 11:25:48,884 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-10-22 11:25:48,884 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-10-22 11:25:48,885 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-10-22 11:25:48,885 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-10-22 11:25:48,886 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-10-22 11:25:48,888 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-10-22 11:25:48,889 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-10-22 11:25:48,890 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-10-22 11:25:48,890 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-10-22 11:25:48,890 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-10-22 11:25:48,891 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-10-22 11:25:48,891 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-10-22 11:25:48,891 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-10-22 11:25:48,892 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-10-22 11:25:48,893 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/working_dir_8de3fd29-7237-4dd4-9159-b4adb36cf6dc/bin/utaipan/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Default.epf [2019-10-22 11:25:48,913 INFO L113 SettingsManager]: Loading preferences was successful [2019-10-22 11:25:48,913 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-10-22 11:25:48,914 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2019-10-22 11:25:48,914 INFO L138 SettingsManager]: * User list type=DISABLED [2019-10-22 11:25:48,915 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2019-10-22 11:25:48,915 INFO L138 SettingsManager]: * Explicit value domain=true [2019-10-22 11:25:48,915 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2019-10-22 11:25:48,915 INFO L138 SettingsManager]: * Octagon Domain=false [2019-10-22 11:25:48,915 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2019-10-22 11:25:48,916 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2019-10-22 11:25:48,916 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2019-10-22 11:25:48,916 INFO L138 SettingsManager]: * Interval Domain=false [2019-10-22 11:25:48,917 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-10-22 11:25:48,917 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-10-22 11:25:48,917 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-10-22 11:25:48,917 INFO L138 SettingsManager]: * sizeof long=4 [2019-10-22 11:25:48,918 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2019-10-22 11:25:48,918 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-10-22 11:25:48,918 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-10-22 11:25:48,918 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-10-22 11:25:48,920 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2019-10-22 11:25:48,920 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2019-10-22 11:25:48,920 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2019-10-22 11:25:48,920 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-10-22 11:25:48,921 INFO L138 SettingsManager]: * sizeof long double=12 [2019-10-22 11:25:48,921 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-10-22 11:25:48,921 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-10-22 11:25:48,921 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-10-22 11:25:48,923 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-10-22 11:25:48,923 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-22 11:25:48,923 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-10-22 11:25:48,923 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-10-22 11:25:48,923 INFO L138 SettingsManager]: * Trace refinement strategy=TAIPAN [2019-10-22 11:25:48,924 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-10-22 11:25:48,924 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-10-22 11:25:48,924 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_8de3fd29-7237-4dd4-9159-b4adb36cf6dc/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 -> 7ac509d7b3f1ef173e01ced3ce9249a58ee1c04d [2019-10-22 11:25:48,962 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-10-22 11:25:48,976 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-10-22 11:25:48,979 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-10-22 11:25:48,986 INFO L271 PluginConnector]: Initializing CDTParser... [2019-10-22 11:25:48,986 INFO L275 PluginConnector]: CDTParser initialized [2019-10-22 11:25:48,987 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/working_dir_8de3fd29-7237-4dd4-9159-b4adb36cf6dc/bin/utaipan/../../sv-benchmarks/c/array-memsafety/openbsd_cstrnlen-alloca-1.i [2019-10-22 11:25:49,038 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_8de3fd29-7237-4dd4-9159-b4adb36cf6dc/bin/utaipan/data/3b1254345/e722f49c4e1b4636b54fcd19650fd998/FLAG49ff40a6b [2019-10-22 11:25:49,480 INFO L306 CDTParser]: Found 1 translation units. [2019-10-22 11:25:49,481 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/working_dir_8de3fd29-7237-4dd4-9159-b4adb36cf6dc/sv-benchmarks/c/array-memsafety/openbsd_cstrnlen-alloca-1.i [2019-10-22 11:25:49,490 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_8de3fd29-7237-4dd4-9159-b4adb36cf6dc/bin/utaipan/data/3b1254345/e722f49c4e1b4636b54fcd19650fd998/FLAG49ff40a6b [2019-10-22 11:25:49,501 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/working_dir_8de3fd29-7237-4dd4-9159-b4adb36cf6dc/bin/utaipan/data/3b1254345/e722f49c4e1b4636b54fcd19650fd998 [2019-10-22 11:25:49,503 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-10-22 11:25:49,505 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2019-10-22 11:25:49,505 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-10-22 11:25:49,505 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-10-22 11:25:49,509 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-10-22 11:25:49,510 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.10 11:25:49" (1/1) ... [2019-10-22 11:25:49,512 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3271d73e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:25:49, skipping insertion in model container [2019-10-22 11:25:49,512 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.10 11:25:49" (1/1) ... [2019-10-22 11:25:49,519 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-10-22 11:25:49,554 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-10-22 11:25:49,988 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-22 11:25:50,005 INFO L188 MainTranslator]: Completed pre-run [2019-10-22 11:25:50,065 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-22 11:25:50,124 INFO L192 MainTranslator]: Completed translation [2019-10-22 11:25:50,125 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:25:50 WrapperNode [2019-10-22 11:25:50,126 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-10-22 11:25:50,127 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-10-22 11:25:50,127 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-10-22 11:25:50,127 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-10-22 11:25:50,139 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:25:50" (1/1) ... [2019-10-22 11:25:50,152 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:25:50" (1/1) ... [2019-10-22 11:25:50,175 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-10-22 11:25:50,175 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-10-22 11:25:50,175 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-10-22 11:25:50,175 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-10-22 11:25:50,187 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:25:50" (1/1) ... [2019-10-22 11:25:50,188 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:25:50" (1/1) ... [2019-10-22 11:25:50,190 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:25:50" (1/1) ... [2019-10-22 11:25:50,191 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:25:50" (1/1) ... [2019-10-22 11:25:50,197 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:25:50" (1/1) ... [2019-10-22 11:25:50,202 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:25:50" (1/1) ... [2019-10-22 11:25:50,203 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:25:50" (1/1) ... [2019-10-22 11:25:50,206 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-10-22 11:25:50,206 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-10-22 11:25:50,206 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-10-22 11:25:50,207 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-10-22 11:25:50,208 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:25:50" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_8de3fd29-7237-4dd4-9159-b4adb36cf6dc/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 11:25:50,291 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-10-22 11:25:50,291 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-10-22 11:25:50,292 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-10-22 11:25:50,292 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-10-22 11:25:50,292 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-10-22 11:25:50,292 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-10-22 11:25:50,715 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-10-22 11:25:50,715 INFO L284 CfgBuilder]: Removed 8 assume(true) statements. [2019-10-22 11:25:50,717 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.10 11:25:50 BoogieIcfgContainer [2019-10-22 11:25:50,717 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-10-22 11:25:50,718 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-10-22 11:25:50,718 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-10-22 11:25:50,722 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-10-22 11:25:50,722 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.10 11:25:49" (1/3) ... [2019-10-22 11:25:50,723 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6a78a0c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.10 11:25:50, skipping insertion in model container [2019-10-22 11:25:50,724 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:25:50" (2/3) ... [2019-10-22 11:25:50,724 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6a78a0c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.10 11:25:50, skipping insertion in model container [2019-10-22 11:25:50,725 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.10 11:25:50" (3/3) ... [2019-10-22 11:25:50,727 INFO L109 eAbstractionObserver]: Analyzing ICFG openbsd_cstrnlen-alloca-1.i [2019-10-22 11:25:50,737 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-10-22 11:25:50,746 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 7 error locations. [2019-10-22 11:25:50,761 INFO L249 AbstractCegarLoop]: Starting to check reachability of 7 error locations. [2019-10-22 11:25:50,786 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-10-22 11:25:50,786 INFO L374 AbstractCegarLoop]: Hoare is false [2019-10-22 11:25:50,786 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-10-22 11:25:50,787 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-10-22 11:25:50,787 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-10-22 11:25:50,787 INFO L378 AbstractCegarLoop]: Difference is false [2019-10-22 11:25:50,787 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-10-22 11:25:50,787 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-10-22 11:25:50,802 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states. [2019-10-22 11:25:50,810 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2019-10-22 11:25:50,811 INFO L372 BasicCegarLoop]: Found error trace [2019-10-22 11:25:50,811 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2019-10-22 11:25:50,813 INFO L410 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr6ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION]=== [2019-10-22 11:25:50,818 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 11:25:50,819 INFO L82 PathProgramCache]: Analyzing trace with hash 1805029043, now seen corresponding path program 1 times [2019-10-22 11:25:50,828 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-22 11:25:50,828 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [460864432] [2019-10-22 11:25:50,828 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 11:25:50,828 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 11:25:50,829 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-22 11:25:50,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 11:25:50,969 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 11:25:50,969 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [460864432] [2019-10-22 11:25:50,970 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-22 11:25:50,970 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-10-22 11:25:50,970 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1998166540] [2019-10-22 11:25:50,974 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-22 11:25:50,975 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-22 11:25:50,988 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-22 11:25:50,989 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-22 11:25:50,991 INFO L87 Difference]: Start difference. First operand 29 states. Second operand 3 states. [2019-10-22 11:25:51,040 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-22 11:25:51,040 INFO L93 Difference]: Finished difference Result 27 states and 31 transitions. [2019-10-22 11:25:51,041 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-22 11:25:51,042 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 7 [2019-10-22 11:25:51,043 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-22 11:25:51,053 INFO L225 Difference]: With dead ends: 27 [2019-10-22 11:25:51,053 INFO L226 Difference]: Without dead ends: 25 [2019-10-22 11:25:51,055 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 11:25:51,073 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25 states. [2019-10-22 11:25:51,087 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25 to 25. [2019-10-22 11:25:51,088 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25 states. [2019-10-22 11:25:51,089 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 29 transitions. [2019-10-22 11:25:51,090 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 29 transitions. Word has length 7 [2019-10-22 11:25:51,091 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-22 11:25:51,091 INFO L462 AbstractCegarLoop]: Abstraction has 25 states and 29 transitions. [2019-10-22 11:25:51,091 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-22 11:25:51,091 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 29 transitions. [2019-10-22 11:25:51,092 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2019-10-22 11:25:51,092 INFO L372 BasicCegarLoop]: Found error trace [2019-10-22 11:25:51,092 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2019-10-22 11:25:51,092 INFO L410 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr6ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION]=== [2019-10-22 11:25:51,092 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 11:25:51,093 INFO L82 PathProgramCache]: Analyzing trace with hash 1805029044, now seen corresponding path program 1 times [2019-10-22 11:25:51,093 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-22 11:25:51,093 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1487271530] [2019-10-22 11:25:51,093 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 11:25:51,093 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 11:25:51,094 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-22 11:25:51,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 11:25:51,174 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 11:25:51,174 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1487271530] [2019-10-22 11:25:51,175 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-22 11:25:51,175 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-10-22 11:25:51,175 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2057428673] [2019-10-22 11:25:51,177 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-10-22 11:25:51,177 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-22 11:25:51,177 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-10-22 11:25:51,178 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-10-22 11:25:51,178 INFO L87 Difference]: Start difference. First operand 25 states and 29 transitions. Second operand 4 states. [2019-10-22 11:25:51,226 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-22 11:25:51,227 INFO L93 Difference]: Finished difference Result 24 states and 28 transitions. [2019-10-22 11:25:51,227 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-10-22 11:25:51,227 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 7 [2019-10-22 11:25:51,228 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-22 11:25:51,228 INFO L225 Difference]: With dead ends: 24 [2019-10-22 11:25:51,229 INFO L226 Difference]: Without dead ends: 24 [2019-10-22 11:25:51,230 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-10-22 11:25:51,230 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24 states. [2019-10-22 11:25:51,232 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24 to 24. [2019-10-22 11:25:51,232 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2019-10-22 11:25:51,233 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 28 transitions. [2019-10-22 11:25:51,233 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 28 transitions. Word has length 7 [2019-10-22 11:25:51,233 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-22 11:25:51,234 INFO L462 AbstractCegarLoop]: Abstraction has 24 states and 28 transitions. [2019-10-22 11:25:51,234 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-10-22 11:25:51,234 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 28 transitions. [2019-10-22 11:25:51,235 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2019-10-22 11:25:51,235 INFO L372 BasicCegarLoop]: Found error trace [2019-10-22 11:25:51,235 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2019-10-22 11:25:51,235 INFO L410 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr6ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION]=== [2019-10-22 11:25:51,236 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 11:25:51,236 INFO L82 PathProgramCache]: Analyzing trace with hash 1805029097, now seen corresponding path program 1 times [2019-10-22 11:25:51,236 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-22 11:25:51,236 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [49314828] [2019-10-22 11:25:51,236 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 11:25:51,237 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 11:25:51,237 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-22 11:25:51,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 11:25:51,294 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 11:25:51,294 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [49314828] [2019-10-22 11:25:51,295 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-22 11:25:51,295 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-10-22 11:25:51,295 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [890635738] [2019-10-22 11:25:51,295 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-10-22 11:25:51,296 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-22 11:25:51,296 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-10-22 11:25:51,296 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-10-22 11:25:51,296 INFO L87 Difference]: Start difference. First operand 24 states and 28 transitions. Second operand 4 states. [2019-10-22 11:25:51,328 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-22 11:25:51,328 INFO L93 Difference]: Finished difference Result 41 states and 47 transitions. [2019-10-22 11:25:51,329 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-10-22 11:25:51,329 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 7 [2019-10-22 11:25:51,329 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-22 11:25:51,330 INFO L225 Difference]: With dead ends: 41 [2019-10-22 11:25:51,330 INFO L226 Difference]: Without dead ends: 41 [2019-10-22 11:25:51,331 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-10-22 11:25:51,331 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41 states. [2019-10-22 11:25:51,334 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41 to 27. [2019-10-22 11:25:51,334 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2019-10-22 11:25:51,335 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 32 transitions. [2019-10-22 11:25:51,335 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 32 transitions. Word has length 7 [2019-10-22 11:25:51,335 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-22 11:25:51,336 INFO L462 AbstractCegarLoop]: Abstraction has 27 states and 32 transitions. [2019-10-22 11:25:51,336 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-10-22 11:25:51,336 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 32 transitions. [2019-10-22 11:25:51,336 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2019-10-22 11:25:51,336 INFO L372 BasicCegarLoop]: Found error trace [2019-10-22 11:25:51,336 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2019-10-22 11:25:51,337 INFO L410 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr6ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION]=== [2019-10-22 11:25:51,337 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 11:25:51,337 INFO L82 PathProgramCache]: Analyzing trace with hash 1806876139, now seen corresponding path program 1 times [2019-10-22 11:25:51,337 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-22 11:25:51,337 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [491016052] [2019-10-22 11:25:51,338 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 11:25:51,338 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 11:25:51,338 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-22 11:25:51,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 11:25:51,403 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 11:25:51,404 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [491016052] [2019-10-22 11:25:51,404 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-22 11:25:51,404 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-10-22 11:25:51,404 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1086470046] [2019-10-22 11:25:51,404 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-10-22 11:25:51,405 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-22 11:25:51,405 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-10-22 11:25:51,405 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-10-22 11:25:51,405 INFO L87 Difference]: Start difference. First operand 27 states and 32 transitions. Second operand 4 states. [2019-10-22 11:25:51,512 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-22 11:25:51,512 INFO L93 Difference]: Finished difference Result 45 states and 52 transitions. [2019-10-22 11:25:51,513 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-10-22 11:25:51,513 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 7 [2019-10-22 11:25:51,514 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-22 11:25:51,514 INFO L225 Difference]: With dead ends: 45 [2019-10-22 11:25:51,514 INFO L226 Difference]: Without dead ends: 45 [2019-10-22 11:25:51,515 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2019-10-22 11:25:51,515 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45 states. [2019-10-22 11:25:51,517 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45 to 29. [2019-10-22 11:25:51,518 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2019-10-22 11:25:51,518 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 35 transitions. [2019-10-22 11:25:51,521 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 35 transitions. Word has length 7 [2019-10-22 11:25:51,522 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-22 11:25:51,523 INFO L462 AbstractCegarLoop]: Abstraction has 29 states and 35 transitions. [2019-10-22 11:25:51,523 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-10-22 11:25:51,523 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 35 transitions. [2019-10-22 11:25:51,523 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2019-10-22 11:25:51,524 INFO L372 BasicCegarLoop]: Found error trace [2019-10-22 11:25:51,524 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-22 11:25:51,524 INFO L410 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr6ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION]=== [2019-10-22 11:25:51,524 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 11:25:51,524 INFO L82 PathProgramCache]: Analyzing trace with hash -1954750824, now seen corresponding path program 1 times [2019-10-22 11:25:51,525 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-22 11:25:51,525 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1604441730] [2019-10-22 11:25:51,525 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 11:25:51,525 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 11:25:51,525 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-22 11:25:51,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 11:25:51,594 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 11:25:51,594 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1604441730] [2019-10-22 11:25:51,595 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-22 11:25:51,595 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-10-22 11:25:51,595 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1223543396] [2019-10-22 11:25:51,595 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-10-22 11:25:51,595 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-22 11:25:51,596 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-10-22 11:25:51,596 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-10-22 11:25:51,596 INFO L87 Difference]: Start difference. First operand 29 states and 35 transitions. Second operand 4 states. [2019-10-22 11:25:51,638 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-22 11:25:51,638 INFO L93 Difference]: Finished difference Result 28 states and 34 transitions. [2019-10-22 11:25:51,638 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-10-22 11:25:51,638 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 11 [2019-10-22 11:25:51,639 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-22 11:25:51,639 INFO L225 Difference]: With dead ends: 28 [2019-10-22 11:25:51,639 INFO L226 Difference]: Without dead ends: 28 [2019-10-22 11:25:51,640 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2019-10-22 11:25:51,640 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states. [2019-10-22 11:25:51,642 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 28. [2019-10-22 11:25:51,642 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2019-10-22 11:25:51,642 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 34 transitions. [2019-10-22 11:25:51,643 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 34 transitions. Word has length 11 [2019-10-22 11:25:51,643 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-22 11:25:51,643 INFO L462 AbstractCegarLoop]: Abstraction has 28 states and 34 transitions. [2019-10-22 11:25:51,643 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-10-22 11:25:51,643 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 34 transitions. [2019-10-22 11:25:51,644 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2019-10-22 11:25:51,644 INFO L372 BasicCegarLoop]: Found error trace [2019-10-22 11:25:51,644 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-22 11:25:51,644 INFO L410 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr6ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION]=== [2019-10-22 11:25:51,644 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 11:25:51,645 INFO L82 PathProgramCache]: Analyzing trace with hash -1954750823, now seen corresponding path program 1 times [2019-10-22 11:25:51,645 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-22 11:25:51,645 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [706163638] [2019-10-22 11:25:51,645 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 11:25:51,645 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 11:25:51,645 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-22 11:25:51,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 11:25:51,717 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 11:25:51,718 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [706163638] [2019-10-22 11:25:51,718 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-22 11:25:51,718 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-10-22 11:25:51,718 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2117810767] [2019-10-22 11:25:51,719 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-10-22 11:25:51,719 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-22 11:25:51,719 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-10-22 11:25:51,720 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2019-10-22 11:25:51,720 INFO L87 Difference]: Start difference. First operand 28 states and 34 transitions. Second operand 6 states. [2019-10-22 11:25:51,796 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-22 11:25:51,796 INFO L93 Difference]: Finished difference Result 38 states and 45 transitions. [2019-10-22 11:25:51,797 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-10-22 11:25:51,797 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 11 [2019-10-22 11:25:51,797 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-22 11:25:51,798 INFO L225 Difference]: With dead ends: 38 [2019-10-22 11:25:51,798 INFO L226 Difference]: Without dead ends: 38 [2019-10-22 11:25:51,798 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2019-10-22 11:25:51,799 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states. [2019-10-22 11:25:51,801 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 31. [2019-10-22 11:25:51,801 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2019-10-22 11:25:51,802 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 38 transitions. [2019-10-22 11:25:51,802 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 38 transitions. Word has length 11 [2019-10-22 11:25:51,803 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-22 11:25:51,803 INFO L462 AbstractCegarLoop]: Abstraction has 31 states and 38 transitions. [2019-10-22 11:25:51,803 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-10-22 11:25:51,803 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 38 transitions. [2019-10-22 11:25:51,803 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2019-10-22 11:25:51,803 INFO L372 BasicCegarLoop]: Found error trace [2019-10-22 11:25:51,804 INFO L380 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-22 11:25:51,804 INFO L410 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr6ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION]=== [2019-10-22 11:25:51,804 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 11:25:51,804 INFO L82 PathProgramCache]: Analyzing trace with hash -1226025170, now seen corresponding path program 1 times [2019-10-22 11:25:51,804 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-22 11:25:51,805 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [464311375] [2019-10-22 11:25:51,805 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 11:25:51,805 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 11:25:51,805 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-22 11:25:51,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 11:25:51,879 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-22 11:25:51,879 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [464311375] [2019-10-22 11:25:51,879 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [567375500] [2019-10-22 11:25:51,879 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_8de3fd29-7237-4dd4-9159-b4adb36cf6dc/bin/utaipan/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-22 11:25:51,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 11:25:51,933 INFO L256 TraceCheckSpWp]: Trace formula consists of 45 conjuncts, 11 conjunts are in the unsatisfiable core [2019-10-22 11:25:51,938 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-22 11:25:52,003 INFO L375 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 [2019-10-22 11:25:52,004 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-10-22 11:25:52,013 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-10-22 11:25:52,013 INFO L496 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-10-22 11:25:52,014 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:13, output treesize:12 [2019-10-22 11:25:52,046 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-22 11:25:52,046 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-22 11:25:52,089 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-22 11:25:52,126 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-22 11:25:52,127 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleAbstractInterpretation [7359573] [2019-10-22 11:25:52,143 INFO L211 CegarAbsIntRunner]: Running AI on error trace of length 12 [2019-10-22 11:25:52,194 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2019-10-22 11:25:52,194 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2019-10-22 11:25:52,497 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-22 11:25:52,498 FATAL L? ?]: The Plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction has thrown an exception: java.lang.AssertionError: inappropriate decl info IMPLEMENTATION at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.boogie.Boogie2SmtSymbolTable.getBoogieVar(Boogie2SmtSymbolTable.java:222) at de.uni_freiburg.informatik.ultimate.plugins.analysis.abstractinterpretationv2.domain.nonrelational.NonrelationalStatementProcessor.getBoogieVar(NonrelationalStatementProcessor.java:348) at de.uni_freiburg.informatik.ultimate.plugins.analysis.abstractinterpretationv2.domain.nonrelational.NonrelationalStatementProcessor.handleHavocStatement(NonrelationalStatementProcessor.java:325) at de.uni_freiburg.informatik.ultimate.plugins.analysis.abstractinterpretationv2.domain.nonrelational.NonrelationalStatementProcessor.processStatement(NonrelationalStatementProcessor.java:159) at de.uni_freiburg.informatik.ultimate.plugins.analysis.abstractinterpretationv2.domain.nonrelational.NonrelationalStatementProcessor.process(NonrelationalStatementProcessor.java:138) at de.uni_freiburg.informatik.ultimate.plugins.analysis.abstractinterpretationv2.domain.nonrelational.NonrelationalStatementProcessor.process(NonrelationalStatementProcessor.java:107) at de.uni_freiburg.informatik.ultimate.plugins.analysis.abstractinterpretationv2.domain.nonrelational.NonrelationalPostOperator.handleInternalTransition(NonrelationalPostOperator.java:422) at de.uni_freiburg.informatik.ultimate.plugins.analysis.abstractinterpretationv2.domain.nonrelational.NonrelationalPostOperator.handleInternalTransition(NonrelationalPostOperator.java:413) at de.uni_freiburg.informatik.ultimate.plugins.analysis.abstractinterpretationv2.domain.nonrelational.NonrelationalPostOperator.apply(NonrelationalPostOperator.java:140) at de.uni_freiburg.informatik.ultimate.plugins.analysis.abstractinterpretationv2.domain.nonrelational.NonrelationalPostOperator.apply(NonrelationalPostOperator.java:1) at de.uni_freiburg.informatik.ultimate.plugins.analysis.abstractinterpretationv2.domain.compound.CompoundDomainPostOperator.applyInternally(CompoundDomainPostOperator.java:306) at de.uni_freiburg.informatik.ultimate.plugins.analysis.abstractinterpretationv2.domain.compound.CompoundDomainPostOperator.apply(CompoundDomainPostOperator.java:131) at de.uni_freiburg.informatik.ultimate.plugins.analysis.abstractinterpretationv2.domain.compound.CompoundDomainPostOperator.apply(CompoundDomainPostOperator.java:1) at de.uni_freiburg.informatik.ultimate.plugins.analysis.abstractinterpretationv2.domain.transformula.poorman.PoormanCachedPostOperation.restoreOriginalStateVariables(PoormanCachedPostOperation.java:322) at de.uni_freiburg.informatik.ultimate.plugins.analysis.abstractinterpretationv2.domain.transformula.poorman.PoormansAbstractPostOperator.applyPost(PoormansAbstractPostOperator.java:217) at de.uni_freiburg.informatik.ultimate.plugins.analysis.abstractinterpretationv2.domain.transformula.poorman.PoormansAbstractPostOperator.apply(PoormansAbstractPostOperator.java:120) at de.uni_freiburg.informatik.ultimate.plugins.analysis.abstractinterpretationv2.domain.transformula.poorman.PoormansAbstractPostOperator.apply(PoormansAbstractPostOperator.java:1) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.absint.DisjunctiveAbstractState.lambda$17(DisjunctiveAbstractState.java:323) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.absint.DisjunctiveAbstractState.mapCollection(DisjunctiveAbstractState.java:519) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.absint.DisjunctiveAbstractState.apply(DisjunctiveAbstractState.java:323) at de.uni_freiburg.informatik.ultimate.plugins.analysis.abstractinterpretationv2.algorithm.FixpointEngine.calculateAbstractPost(FixpointEngine.java:249) at de.uni_freiburg.informatik.ultimate.plugins.analysis.abstractinterpretationv2.algorithm.FixpointEngine.calculateFixpoint(FixpointEngine.java:134) at de.uni_freiburg.informatik.ultimate.plugins.analysis.abstractinterpretationv2.algorithm.FixpointEngine.run(FixpointEngine.java:105) at de.uni_freiburg.informatik.ultimate.plugins.analysis.abstractinterpretationv2.tool.AbstractInterpreter.runWithoutTimeoutAndResults(AbstractInterpreter.java:149) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.CegarAbsIntRunner.generateFixpoints(CegarAbsIntRunner.java:227) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.CegarAbsIntRunner.(CegarAbsIntRunner.java:158) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleAbstractInterpretation.getOrConstructRunner(IpTcStrategyModuleAbstractInterpretation.java:74) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleAbstractInterpretation.construct(IpTcStrategyModuleAbstractInterpretation.java:81) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getOrConstruct(IpTcStrategyModuleBase.java:101) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getInterpolantComputationStatus(IpTcStrategyModuleBase.java:77) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.tryExecuteInterpolantGenerator(TraceAbstractionRefinementEngine.java:299) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.generateProof(TraceAbstractionRefinementEngine.java:184) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.executeStrategy(TraceAbstractionRefinementEngine.java:174) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:85) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.RefinementEngineFactory.runRefinementEngine(RefinementEngineFactory.java:124) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:431) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterateInternal(AbstractCegarLoop.java:419) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:368) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.iterate(TraceAbstractionStarter.java:332) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:170) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:122) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:120) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:168) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:316) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:55) [2019-10-22 11:25:52,502 INFO L168 Benchmark]: Toolchain (without parser) took 2997.46 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 153.1 MB). Free memory was 937.8 MB in the beginning and 982.5 MB in the end (delta: -44.7 MB). Peak memory consumption was 108.4 MB. Max. memory is 11.5 GB. [2019-10-22 11:25:52,503 INFO L168 Benchmark]: CDTParser took 0.17 ms. Allocated memory is still 1.0 GB. Free memory is still 962.0 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-10-22 11:25:52,503 INFO L168 Benchmark]: CACSL2BoogieTranslator took 620.87 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 153.1 MB). Free memory was 937.8 MB in the beginning and 1.1 GB in the end (delta: -197.3 MB). Peak memory consumption was 17.9 MB. Max. memory is 11.5 GB. [2019-10-22 11:25:52,504 INFO L168 Benchmark]: Boogie Procedure Inliner took 48.22 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: 6.9 MB). Peak memory consumption was 6.9 MB. Max. memory is 11.5 GB. [2019-10-22 11:25:52,504 INFO L168 Benchmark]: Boogie Preprocessor took 30.68 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. [2019-10-22 11:25:52,505 INFO L168 Benchmark]: RCFGBuilder took 510.87 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: 21.9 MB). Peak memory consumption was 21.9 MB. Max. memory is 11.5 GB. [2019-10-22 11:25:52,505 INFO L168 Benchmark]: TraceAbstraction took 1782.82 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 982.5 MB in the end (delta: 123.7 MB). Peak memory consumption was 123.7 MB. Max. memory is 11.5 GB. [2019-10-22 11:25:52,508 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.17 ms. Allocated memory is still 1.0 GB. Free memory is still 962.0 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 620.87 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 153.1 MB). Free memory was 937.8 MB in the beginning and 1.1 GB in the end (delta: -197.3 MB). Peak memory consumption was 17.9 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 48.22 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: 6.9 MB). Peak memory consumption was 6.9 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 30.68 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 510.87 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: 21.9 MB). Peak memory consumption was 21.9 MB. Max. memory is 11.5 GB. * TraceAbstraction took 1782.82 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 982.5 MB in the end (delta: 123.7 MB). Peak memory consumption was 123.7 MB. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - ExceptionOrErrorResult: AssertionError: inappropriate decl info IMPLEMENTATION de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: AssertionError: inappropriate decl info IMPLEMENTATION: de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.boogie.Boogie2SmtSymbolTable.getBoogieVar(Boogie2SmtSymbolTable.java:222) RESULT: Ultimate could not prove your program: Toolchain returned no result. Received shutdown request... ### Bit-precise run ### This is Ultimate 0.1.24-cad4683 [2019-10-22 11:25:54,855 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-10-22 11:25:54,857 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-10-22 11:25:54,868 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-10-22 11:25:54,869 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-10-22 11:25:54,871 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-10-22 11:25:54,872 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-10-22 11:25:54,874 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-10-22 11:25:54,877 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-10-22 11:25:54,880 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-10-22 11:25:54,882 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-10-22 11:25:54,884 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-10-22 11:25:54,890 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-10-22 11:25:54,891 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-10-22 11:25:54,892 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-10-22 11:25:54,893 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-10-22 11:25:54,894 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-10-22 11:25:54,897 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-10-22 11:25:54,899 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-10-22 11:25:54,900 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-10-22 11:25:54,902 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-10-22 11:25:54,907 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-10-22 11:25:54,910 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-10-22 11:25:54,913 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-10-22 11:25:54,916 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-10-22 11:25:54,921 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-10-22 11:25:54,922 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-10-22 11:25:54,922 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-10-22 11:25:54,923 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-10-22 11:25:54,924 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-10-22 11:25:54,924 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-10-22 11:25:54,925 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-10-22 11:25:54,925 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-10-22 11:25:54,926 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-10-22 11:25:54,930 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-10-22 11:25:54,930 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-10-22 11:25:54,931 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-10-22 11:25:54,931 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-10-22 11:25:54,931 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-10-22 11:25:54,932 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-10-22 11:25:54,932 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-10-22 11:25:54,933 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/working_dir_8de3fd29-7237-4dd4-9159-b4adb36cf6dc/bin/utaipan/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Bitvector.epf [2019-10-22 11:25:54,949 INFO L113 SettingsManager]: Loading preferences was successful [2019-10-22 11:25:54,949 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-10-22 11:25:54,950 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2019-10-22 11:25:54,950 INFO L138 SettingsManager]: * User list type=DISABLED [2019-10-22 11:25:54,950 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2019-10-22 11:25:54,950 INFO L138 SettingsManager]: * Explicit value domain=true [2019-10-22 11:25:54,951 INFO L138 SettingsManager]: * Octagon Domain=false [2019-10-22 11:25:54,951 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2019-10-22 11:25:54,951 INFO L138 SettingsManager]: * Interval Domain=false [2019-10-22 11:25:54,952 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-10-22 11:25:54,952 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-10-22 11:25:54,952 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-10-22 11:25:54,952 INFO L138 SettingsManager]: * sizeof long=4 [2019-10-22 11:25:54,953 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2019-10-22 11:25:54,953 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-10-22 11:25:54,953 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-10-22 11:25:54,953 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-10-22 11:25:54,953 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2019-10-22 11:25:54,953 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2019-10-22 11:25:54,954 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2019-10-22 11:25:54,954 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-10-22 11:25:54,954 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2019-10-22 11:25:54,954 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2019-10-22 11:25:54,954 INFO L138 SettingsManager]: * sizeof long double=12 [2019-10-22 11:25:54,955 INFO L138 SettingsManager]: * Use constant arrays=true [2019-10-22 11:25:54,955 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-10-22 11:25:54,955 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-10-22 11:25:54,955 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-10-22 11:25:54,955 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-10-22 11:25:54,955 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-22 11:25:54,956 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-10-22 11:25:54,956 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-10-22 11:25:54,956 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2019-10-22 11:25:54,956 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --rewrite-divk --print-success --lang smt [2019-10-22 11:25:54,956 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-10-22 11:25:54,957 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/working_dir_8de3fd29-7237-4dd4-9159-b4adb36cf6dc/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 -> 7ac509d7b3f1ef173e01ced3ce9249a58ee1c04d [2019-10-22 11:25:54,989 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-10-22 11:25:55,001 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-10-22 11:25:55,007 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-10-22 11:25:55,008 INFO L271 PluginConnector]: Initializing CDTParser... [2019-10-22 11:25:55,009 INFO L275 PluginConnector]: CDTParser initialized [2019-10-22 11:25:55,010 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/working_dir_8de3fd29-7237-4dd4-9159-b4adb36cf6dc/bin/utaipan/../../sv-benchmarks/c/array-memsafety/openbsd_cstrnlen-alloca-1.i [2019-10-22 11:25:55,076 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_8de3fd29-7237-4dd4-9159-b4adb36cf6dc/bin/utaipan/data/040902e2f/60c730b759a14cda98be80d20dd06aad/FLAG69e293d1d [2019-10-22 11:25:55,562 INFO L306 CDTParser]: Found 1 translation units. [2019-10-22 11:25:55,575 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/working_dir_8de3fd29-7237-4dd4-9159-b4adb36cf6dc/sv-benchmarks/c/array-memsafety/openbsd_cstrnlen-alloca-1.i [2019-10-22 11:25:55,591 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_8de3fd29-7237-4dd4-9159-b4adb36cf6dc/bin/utaipan/data/040902e2f/60c730b759a14cda98be80d20dd06aad/FLAG69e293d1d [2019-10-22 11:25:55,871 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/working_dir_8de3fd29-7237-4dd4-9159-b4adb36cf6dc/bin/utaipan/data/040902e2f/60c730b759a14cda98be80d20dd06aad [2019-10-22 11:25:55,876 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-10-22 11:25:55,877 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2019-10-22 11:25:55,878 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-10-22 11:25:55,880 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-10-22 11:25:55,884 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-10-22 11:25:55,885 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.10 11:25:55" (1/1) ... [2019-10-22 11:25:55,888 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@73063aaa and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:25:55, skipping insertion in model container [2019-10-22 11:25:55,888 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.10 11:25:55" (1/1) ... [2019-10-22 11:25:55,896 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-10-22 11:25:55,946 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-10-22 11:25:56,285 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-22 11:25:56,390 INFO L188 MainTranslator]: Completed pre-run [2019-10-22 11:25:56,458 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-22 11:25:56,511 INFO L192 MainTranslator]: Completed translation [2019-10-22 11:25:56,511 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:25:56 WrapperNode [2019-10-22 11:25:56,512 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-10-22 11:25:56,512 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-10-22 11:25:56,512 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-10-22 11:25:56,513 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-10-22 11:25:56,525 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:25:56" (1/1) ... [2019-10-22 11:25:56,544 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:25:56" (1/1) ... [2019-10-22 11:25:56,571 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-10-22 11:25:56,572 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-10-22 11:25:56,572 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-10-22 11:25:56,572 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-10-22 11:25:56,582 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:25:56" (1/1) ... [2019-10-22 11:25:56,582 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:25:56" (1/1) ... [2019-10-22 11:25:56,586 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:25:56" (1/1) ... [2019-10-22 11:25:56,588 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:25:56" (1/1) ... [2019-10-22 11:25:56,597 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:25:56" (1/1) ... [2019-10-22 11:25:56,602 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:25:56" (1/1) ... [2019-10-22 11:25:56,607 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:25:56" (1/1) ... [2019-10-22 11:25:56,609 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-10-22 11:25:56,610 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-10-22 11:25:56,610 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-10-22 11:25:56,610 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-10-22 11:25:56,612 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:25:56" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_8de3fd29-7237-4dd4-9159-b4adb36cf6dc/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 11:25:56,671 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1 [2019-10-22 11:25:56,671 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-10-22 11:25:56,671 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE1 [2019-10-22 11:25:56,671 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-10-22 11:25:56,672 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-10-22 11:25:56,672 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-10-22 11:25:57,070 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-10-22 11:25:57,071 INFO L284 CfgBuilder]: Removed 8 assume(true) statements. [2019-10-22 11:25:57,072 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.10 11:25:57 BoogieIcfgContainer [2019-10-22 11:25:57,072 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-10-22 11:25:57,073 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-10-22 11:25:57,073 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-10-22 11:25:57,076 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-10-22 11:25:57,076 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.10 11:25:55" (1/3) ... [2019-10-22 11:25:57,077 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3b555f8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.10 11:25:57, skipping insertion in model container [2019-10-22 11:25:57,077 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:25:56" (2/3) ... [2019-10-22 11:25:57,077 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3b555f8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.10 11:25:57, skipping insertion in model container [2019-10-22 11:25:57,078 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.10 11:25:57" (3/3) ... [2019-10-22 11:25:57,079 INFO L109 eAbstractionObserver]: Analyzing ICFG openbsd_cstrnlen-alloca-1.i [2019-10-22 11:25:57,090 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-10-22 11:25:57,100 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 7 error locations. [2019-10-22 11:25:57,108 INFO L249 AbstractCegarLoop]: Starting to check reachability of 7 error locations. [2019-10-22 11:25:57,130 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-10-22 11:25:57,130 INFO L374 AbstractCegarLoop]: Hoare is false [2019-10-22 11:25:57,130 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-10-22 11:25:57,130 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-10-22 11:25:57,131 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-10-22 11:25:57,131 INFO L378 AbstractCegarLoop]: Difference is false [2019-10-22 11:25:57,131 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-10-22 11:25:57,131 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-10-22 11:25:57,143 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states. [2019-10-22 11:25:57,149 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2019-10-22 11:25:57,149 INFO L372 BasicCegarLoop]: Found error trace [2019-10-22 11:25:57,150 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2019-10-22 11:25:57,152 INFO L410 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr6ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr4REQUIRES_VIOLATION]=== [2019-10-22 11:25:57,157 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 11:25:57,157 INFO L82 PathProgramCache]: Analyzing trace with hash 1805029043, now seen corresponding path program 1 times [2019-10-22 11:25:57,165 INFO L157 tionRefinementEngine]: Executing refinement strategy WALRUS [2019-10-22 11:25:57,165 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleCvc4 [774075895] [2019-10-22 11:25:57,165 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_8de3fd29-7237-4dd4-9159-b4adb36cf6dc/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 [2019-10-22 11:25:57,414 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-10-22 11:25:57,414 FATAL L? ?]: An unrecoverable error occured during an interaction with an SMT solver: de.uni_freiburg.informatik.ultimate.logic.SMTLIBException: Sort FloatRoundingMode not declared at de.uni_freiburg.informatik.ultimate.logic.NoopScript.sort(NoopScript.java:412) at de.uni_freiburg.informatik.ultimate.logic.WrapperScript.sort(WrapperScript.java:223) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.scripttransfer.NonDeclaringTermTransferrer.transferSort(NonDeclaringTermTransferrer.java:111) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.scripttransfer.DeclarableFunctionSymbol.defineOrDeclare(DeclarableFunctionSymbol.java:160) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.scripttransfer.HistoryRecordingScript.transferHistoryFromRecord(HistoryRecordingScript.java:143) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.scripttransfer.HistoryRecordingScript.transferHistoryFromRecord(HistoryRecordingScript.java:168) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.SmtFunctionsAndAxioms.transferSymbols(SmtFunctionsAndAxioms.java:139) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleTraceCheck.createExternalManagedScript(IpTcStrategyModuleTraceCheck.java:81) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleCvc4.constructManagedScript(IpTcStrategyModuleCvc4.java:95) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleSpWp.construct(IpTcStrategyModuleSpWp.java:106) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleSpWp.construct(IpTcStrategyModuleSpWp.java:1) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getOrConstruct(IpTcStrategyModuleBase.java:101) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.isCorrect(IpTcStrategyModuleBase.java:57) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.checkFeasibility(TraceAbstractionRefinementEngine.java:244) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.executeStrategy(TraceAbstractionRefinementEngine.java:160) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:85) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.RefinementEngineFactory.runRefinementEngine(RefinementEngineFactory.java:124) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:431) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterateInternal(AbstractCegarLoop.java:419) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:368) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.iterate(TraceAbstractionStarter.java:332) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:170) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:122) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:120) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:168) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:316) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:55) [2019-10-22 11:25:57,419 INFO L168 Benchmark]: Toolchain (without parser) took 1541.19 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 156.8 MB). Free memory was 952.3 MB in the beginning and 1.1 GB in the end (delta: -138.3 MB). Peak memory consumption was 18.5 MB. Max. memory is 11.5 GB. [2019-10-22 11:25:57,419 INFO L168 Benchmark]: CDTParser took 0.26 ms. Allocated memory is still 1.0 GB. Free memory is still 977.8 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-10-22 11:25:57,420 INFO L168 Benchmark]: CACSL2BoogieTranslator took 633.69 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 156.8 MB). Free memory was 946.9 MB in the beginning and 1.1 GB in the end (delta: -189.4 MB). Peak memory consumption was 25.9 MB. Max. memory is 11.5 GB. [2019-10-22 11:25:57,420 INFO L168 Benchmark]: Boogie Procedure Inliner took 59.46 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. [2019-10-22 11:25:57,423 INFO L168 Benchmark]: Boogie Preprocessor took 37.37 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: 6.7 MB). Peak memory consumption was 6.7 MB. Max. memory is 11.5 GB. [2019-10-22 11:25:57,423 INFO L168 Benchmark]: RCFGBuilder took 462.18 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 18.8 MB). Peak memory consumption was 18.8 MB. Max. memory is 11.5 GB. [2019-10-22 11:25:57,424 INFO L168 Benchmark]: TraceAbstraction took 343.91 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: 20.2 MB). Peak memory consumption was 20.2 MB. Max. memory is 11.5 GB. [2019-10-22 11:25:57,428 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.26 ms. Allocated memory is still 1.0 GB. Free memory is still 977.8 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 633.69 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 156.8 MB). Free memory was 946.9 MB in the beginning and 1.1 GB in the end (delta: -189.4 MB). Peak memory consumption was 25.9 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 59.46 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 37.37 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: 6.7 MB). Peak memory consumption was 6.7 MB. Max. memory is 11.5 GB. * RCFGBuilder took 462.18 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 18.8 MB). Peak memory consumption was 18.8 MB. Max. memory is 11.5 GB. * TraceAbstraction took 343.91 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: 20.2 MB). Peak memory consumption was 20.2 MB. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - ExceptionOrErrorResult: SMTLIBException: Sort FloatRoundingMode not declared de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMTLIBException: Sort FloatRoundingMode not declared: de.uni_freiburg.informatik.ultimate.logic.NoopScript.sort(NoopScript.java:412) RESULT: Ultimate could not prove your program: Toolchain returned no result. Received shutdown request...