./Ultimate.py --spec ../../sv-benchmarks/c/ReachSafety.prp --file ../../sv-benchmarks/c/ldv-regression/nested_structure_true-termination.c_true-unreach-call.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 5842f4b8 Calling Ultimate with: java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/working_dir_75a09c45-69fe-4c98-8e3e-e4a8efc6fc7f/bin-2019/utaipan/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/working_dir_75a09c45-69fe-4c98-8e3e-e4a8efc6fc7f/bin-2019/utaipan/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/working_dir_75a09c45-69fe-4c98-8e3e-e4a8efc6fc7f/bin-2019/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/working_dir_75a09c45-69fe-4c98-8e3e-e4a8efc6fc7f/bin-2019/utaipan/config/TaipanReach.xml -i ../../sv-benchmarks/c/ldv-regression/nested_structure_true-termination.c_true-unreach-call.i -s /tmp/vcloud-vcloud-master/worker/working_dir_75a09c45-69fe-4c98-8e3e-e4a8efc6fc7f/bin-2019/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/working_dir_75a09c45-69fe-4c98-8e3e-e4a8efc6fc7f/bin-2019/utaipan --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(__VERIFIER_error())) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash d90463d8e0cbd052bb21c654ec3e821e0001fc9b ........................................................................................................................................................................................................................................................................................ Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.1.23-5842f4b [2018-11-18 16:46:39,793 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-11-18 16:46:39,794 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-11-18 16:46:39,801 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-11-18 16:46:39,802 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-11-18 16:46:39,802 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-11-18 16:46:39,803 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-11-18 16:46:39,805 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-11-18 16:46:39,806 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-11-18 16:46:39,807 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-11-18 16:46:39,808 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-11-18 16:46:39,808 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-11-18 16:46:39,809 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-11-18 16:46:39,810 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-11-18 16:46:39,811 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-11-18 16:46:39,812 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-11-18 16:46:39,812 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-11-18 16:46:39,814 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-11-18 16:46:39,816 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-11-18 16:46:39,817 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-11-18 16:46:39,818 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-11-18 16:46:39,820 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-11-18 16:46:39,821 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-11-18 16:46:39,822 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-11-18 16:46:39,822 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-11-18 16:46:39,823 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-11-18 16:46:39,824 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-11-18 16:46:39,825 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-11-18 16:46:39,825 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-11-18 16:46:39,826 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-11-18 16:46:39,826 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-11-18 16:46:39,827 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-11-18 16:46:39,827 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-11-18 16:46:39,828 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-11-18 16:46:39,829 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-11-18 16:46:39,829 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-11-18 16:46:39,829 INFO L98 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/working_dir_75a09c45-69fe-4c98-8e3e-e4a8efc6fc7f/bin-2019/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf [2018-11-18 16:46:39,840 INFO L110 SettingsManager]: Loading preferences was successful [2018-11-18 16:46:39,840 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-11-18 16:46:39,841 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-11-18 16:46:39,841 INFO L133 SettingsManager]: * User list type=DISABLED [2018-11-18 16:46:39,841 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-11-18 16:46:39,842 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-11-18 16:46:39,842 INFO L133 SettingsManager]: * Explicit value domain=true [2018-11-18 16:46:39,842 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-11-18 16:46:39,842 INFO L133 SettingsManager]: * Octagon Domain=false [2018-11-18 16:46:39,842 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-11-18 16:46:39,843 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-11-18 16:46:39,843 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-11-18 16:46:39,843 INFO L133 SettingsManager]: * Interval Domain=false [2018-11-18 16:46:39,844 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-11-18 16:46:39,844 INFO L133 SettingsManager]: * sizeof long=4 [2018-11-18 16:46:39,844 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-11-18 16:46:39,845 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-11-18 16:46:39,845 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-11-18 16:46:39,845 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-11-18 16:46:39,845 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-11-18 16:46:39,845 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-11-18 16:46:39,845 INFO L133 SettingsManager]: * sizeof long double=12 [2018-11-18 16:46:39,845 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-11-18 16:46:39,846 INFO L133 SettingsManager]: * Use constant arrays=true [2018-11-18 16:46:39,846 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-11-18 16:46:39,846 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-11-18 16:46:39,846 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-11-18 16:46:39,846 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-11-18 16:46:39,846 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-11-18 16:46:39,846 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-11-18 16:46:39,847 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-11-18 16:46:39,847 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-11-18 16:46:39,847 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-11-18 16:46:39,847 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-11-18 16:46:39,847 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-11-18 16:46:39,847 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-11-18 16:46:39,848 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-11-18 16:46:39,848 INFO L133 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_75a09c45-69fe-4c98-8e3e-e4a8efc6fc7f/bin-2019/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 ! call(__VERIFIER_error())) ) 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 -> d90463d8e0cbd052bb21c654ec3e821e0001fc9b [2018-11-18 16:46:39,872 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-11-18 16:46:39,881 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-11-18 16:46:39,884 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-11-18 16:46:39,885 INFO L271 PluginConnector]: Initializing CDTParser... [2018-11-18 16:46:39,886 INFO L276 PluginConnector]: CDTParser initialized [2018-11-18 16:46:39,886 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/working_dir_75a09c45-69fe-4c98-8e3e-e4a8efc6fc7f/bin-2019/utaipan/../../sv-benchmarks/c/ldv-regression/nested_structure_true-termination.c_true-unreach-call.i [2018-11-18 16:46:39,931 INFO L221 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_75a09c45-69fe-4c98-8e3e-e4a8efc6fc7f/bin-2019/utaipan/data/8cc489258/ace410ca9dda45909442810535a7c0ed/FLAG9f40153ab [2018-11-18 16:46:40,301 INFO L307 CDTParser]: Found 1 translation units. [2018-11-18 16:46:40,302 INFO L161 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/working_dir_75a09c45-69fe-4c98-8e3e-e4a8efc6fc7f/sv-benchmarks/c/ldv-regression/nested_structure_true-termination.c_true-unreach-call.i [2018-11-18 16:46:40,308 INFO L355 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_75a09c45-69fe-4c98-8e3e-e4a8efc6fc7f/bin-2019/utaipan/data/8cc489258/ace410ca9dda45909442810535a7c0ed/FLAG9f40153ab [2018-11-18 16:46:40,732 INFO L363 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/working_dir_75a09c45-69fe-4c98-8e3e-e4a8efc6fc7f/bin-2019/utaipan/data/8cc489258/ace410ca9dda45909442810535a7c0ed [2018-11-18 16:46:40,734 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-11-18 16:46:40,735 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2018-11-18 16:46:40,736 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-11-18 16:46:40,736 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-11-18 16:46:40,739 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-11-18 16:46:40,740 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 04:46:40" (1/1) ... [2018-11-18 16:46:40,742 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4b54acc3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 04:46:40, skipping insertion in model container [2018-11-18 16:46:40,742 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 04:46:40" (1/1) ... [2018-11-18 16:46:40,751 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-11-18 16:46:40,765 INFO L176 MainTranslator]: Built tables and reachable declarations [2018-11-18 16:46:40,889 INFO L201 PostProcessor]: Analyzing one entry point: main [2018-11-18 16:46:40,896 INFO L191 MainTranslator]: Completed pre-run [2018-11-18 16:46:40,908 INFO L201 PostProcessor]: Analyzing one entry point: main [2018-11-18 16:46:40,918 INFO L195 MainTranslator]: Completed translation [2018-11-18 16:46:40,919 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 04:46:40 WrapperNode [2018-11-18 16:46:40,919 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-11-18 16:46:40,919 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-11-18 16:46:40,920 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-11-18 16:46:40,920 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-11-18 16:46:40,925 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 04:46:40" (1/1) ... [2018-11-18 16:46:40,931 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 04:46:40" (1/1) ... [2018-11-18 16:46:40,935 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-11-18 16:46:40,935 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-11-18 16:46:40,936 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-11-18 16:46:40,936 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-11-18 16:46:40,942 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 04:46:40" (1/1) ... [2018-11-18 16:46:40,942 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 04:46:40" (1/1) ... [2018-11-18 16:46:40,943 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 04:46:40" (1/1) ... [2018-11-18 16:46:40,944 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 04:46:40" (1/1) ... [2018-11-18 16:46:40,950 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 04:46:40" (1/1) ... [2018-11-18 16:46:40,952 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 04:46:40" (1/1) ... [2018-11-18 16:46:40,953 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 04:46:40" (1/1) ... [2018-11-18 16:46:40,955 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-11-18 16:46:40,955 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-11-18 16:46:40,955 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-11-18 16:46:40,955 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-11-18 16:46:40,956 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 04:46:40" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_75a09c45-69fe-4c98-8e3e-e4a8efc6fc7f/bin-2019/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 [2018-11-18 16:46:41,041 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2018-11-18 16:46:41,041 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2018-11-18 16:46:41,042 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-11-18 16:46:41,042 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-11-18 16:46:41,042 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.alloc [2018-11-18 16:46:41,042 INFO L130 BoogieDeclarations]: Found specification of procedure __blast_assert [2018-11-18 16:46:41,042 INFO L138 BoogieDeclarations]: Found implementation of procedure __blast_assert [2018-11-18 16:46:41,042 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-11-18 16:46:41,042 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-11-18 16:46:41,042 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2018-11-18 16:46:41,042 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-11-18 16:46:41,042 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-11-18 16:46:41,042 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2018-11-18 16:46:41,043 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2018-11-18 16:46:41,043 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2018-11-18 16:46:41,177 INFO L278 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-11-18 16:46:41,178 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 04:46:41 BoogieIcfgContainer [2018-11-18 16:46:41,178 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-11-18 16:46:41,178 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-11-18 16:46:41,179 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-11-18 16:46:41,181 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-11-18 16:46:41,181 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.11 04:46:40" (1/3) ... [2018-11-18 16:46:41,182 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@457dedbe and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 04:46:41, skipping insertion in model container [2018-11-18 16:46:41,182 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 04:46:40" (2/3) ... [2018-11-18 16:46:41,182 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@457dedbe and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 04:46:41, skipping insertion in model container [2018-11-18 16:46:41,183 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 04:46:41" (3/3) ... [2018-11-18 16:46:41,184 INFO L112 eAbstractionObserver]: Analyzing ICFG nested_structure_true-termination.c_true-unreach-call.i [2018-11-18 16:46:41,193 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-11-18 16:46:41,199 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-11-18 16:46:41,209 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-11-18 16:46:41,232 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-11-18 16:46:41,232 INFO L383 AbstractCegarLoop]: Hoare is true [2018-11-18 16:46:41,232 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-11-18 16:46:41,232 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-11-18 16:46:41,232 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-11-18 16:46:41,232 INFO L387 AbstractCegarLoop]: Difference is false [2018-11-18 16:46:41,232 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-11-18 16:46:41,232 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-11-18 16:46:41,245 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states. [2018-11-18 16:46:41,249 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2018-11-18 16:46:41,249 INFO L367 BasicCegarLoop]: Found error trace [2018-11-18 16:46:41,250 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-18 16:46:41,252 INFO L423 AbstractCegarLoop]: === Iteration 1 === [__blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-18 16:46:41,257 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 16:46:41,257 INFO L82 PathProgramCache]: Analyzing trace with hash -1215743292, now seen corresponding path program 1 times [2018-11-18 16:46:41,258 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-18 16:46:41,292 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 16:46:41,292 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 16:46:41,292 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 16:46:41,293 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-18 16:46:41,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 16:46:41,400 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-18 16:46:41,402 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-18 16:46:41,402 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-11-18 16:46:41,402 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-18 16:46:41,405 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-11-18 16:46:41,413 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-11-18 16:46:41,413 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-18 16:46:41,415 INFO L87 Difference]: Start difference. First operand 17 states. Second operand 3 states. [2018-11-18 16:46:41,432 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-18 16:46:41,432 INFO L93 Difference]: Finished difference Result 22 states and 21 transitions. [2018-11-18 16:46:41,432 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-11-18 16:46:41,433 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 9 [2018-11-18 16:46:41,434 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-18 16:46:41,440 INFO L225 Difference]: With dead ends: 22 [2018-11-18 16:46:41,440 INFO L226 Difference]: Without dead ends: 0 [2018-11-18 16:46:41,443 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-18 16:46:41,460 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2018-11-18 16:46:41,466 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2018-11-18 16:46:41,467 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2018-11-18 16:46:41,467 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2018-11-18 16:46:41,469 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 9 [2018-11-18 16:46:41,469 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-18 16:46:41,469 INFO L480 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2018-11-18 16:46:41,469 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-11-18 16:46:41,470 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2018-11-18 16:46:41,470 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2018-11-18 16:46:41,474 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2018-11-18 16:46:41,525 INFO L425 ceAbstractionStarter]: For program point ULTIMATE.initFINAL(line -1) no Hoare annotation was computed. [2018-11-18 16:46:41,526 INFO L428 ceAbstractionStarter]: At program point ULTIMATE.initENTRY(line -1) the Hoare annotation is: true [2018-11-18 16:46:41,526 INFO L425 ceAbstractionStarter]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2018-11-18 16:46:41,526 INFO L425 ceAbstractionStarter]: For program point __blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION(line 9) no Hoare annotation was computed. [2018-11-18 16:46:41,526 INFO L425 ceAbstractionStarter]: For program point __blast_assertEXIT(lines 7 10) no Hoare annotation was computed. [2018-11-18 16:46:41,526 INFO L425 ceAbstractionStarter]: For program point __blast_assertFINAL(lines 7 10) no Hoare annotation was computed. [2018-11-18 16:46:41,526 INFO L428 ceAbstractionStarter]: At program point __blast_assertENTRY(lines 7 10) the Hoare annotation is: true [2018-11-18 16:46:41,526 INFO L425 ceAbstractionStarter]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2018-11-18 16:46:41,527 INFO L428 ceAbstractionStarter]: At program point L-1(line -1) the Hoare annotation is: true [2018-11-18 16:46:41,527 INFO L428 ceAbstractionStarter]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2018-11-18 16:46:41,527 INFO L425 ceAbstractionStarter]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2018-11-18 16:46:41,527 INFO L425 ceAbstractionStarter]: For program point L30(line 30) no Hoare annotation was computed. [2018-11-18 16:46:41,527 INFO L428 ceAbstractionStarter]: At program point mainENTRY(lines 24 32) the Hoare annotation is: true [2018-11-18 16:46:41,527 INFO L425 ceAbstractionStarter]: For program point mainFINAL(lines 24 32) no Hoare annotation was computed. [2018-11-18 16:46:41,527 INFO L421 ceAbstractionStarter]: At program point L30-2(line 30) the Hoare annotation is: false [2018-11-18 16:46:41,527 INFO L425 ceAbstractionStarter]: For program point L30-3(line 30) no Hoare annotation was computed. [2018-11-18 16:46:41,527 INFO L425 ceAbstractionStarter]: For program point mainEXIT(lines 24 32) no Hoare annotation was computed. [2018-11-18 16:46:41,529 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 18.11 04:46:41 BoogieIcfgContainer [2018-11-18 16:46:41,529 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-11-18 16:46:41,530 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2018-11-18 16:46:41,530 INFO L271 PluginConnector]: Initializing Witness Printer... [2018-11-18 16:46:41,530 INFO L276 PluginConnector]: Witness Printer initialized [2018-11-18 16:46:41,530 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 04:46:41" (3/4) ... [2018-11-18 16:46:41,533 INFO L144 WitnessPrinter]: Generating witness for correct program [2018-11-18 16:46:41,538 INFO L333 RCFGBacktranslator]: Ignoring RootEdge to procedure ULTIMATE.init [2018-11-18 16:46:41,538 INFO L333 RCFGBacktranslator]: Ignoring RootEdge to procedure __blast_assert [2018-11-18 16:46:41,538 INFO L333 RCFGBacktranslator]: Ignoring RootEdge to procedure main [2018-11-18 16:46:41,541 INFO L846 BoogieBacktranslator]: Reduced CFG by removing 12 nodes and edges [2018-11-18 16:46:41,541 INFO L846 BoogieBacktranslator]: Reduced CFG by removing 5 nodes and edges [2018-11-18 16:46:41,541 INFO L846 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2018-11-18 16:46:41,541 INFO L846 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2018-11-18 16:46:41,570 INFO L145 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/working_dir_75a09c45-69fe-4c98-8e3e-e4a8efc6fc7f/bin-2019/utaipan/witness.graphml [2018-11-18 16:46:41,570 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2018-11-18 16:46:41,571 INFO L168 Benchmark]: Toolchain (without parser) took 836.22 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 150.5 MB). Free memory was 952.7 MB in the beginning and 1.1 GB in the end (delta: -151.4 MB). There was no memory consumed. Max. memory is 11.5 GB. [2018-11-18 16:46:41,572 INFO L168 Benchmark]: CDTParser took 0.19 ms. Allocated memory is still 1.0 GB. Free memory is still 980.1 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-11-18 16:46:41,572 INFO L168 Benchmark]: CACSL2BoogieTranslator took 183.26 ms. Allocated memory is still 1.0 GB. Free memory was 952.7 MB in the beginning and 941.9 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. [2018-11-18 16:46:41,572 INFO L168 Benchmark]: Boogie Procedure Inliner took 15.86 ms. Allocated memory is still 1.0 GB. Free memory was 941.9 MB in the beginning and 939.3 MB in the end (delta: 2.7 MB). Peak memory consumption was 2.7 MB. Max. memory is 11.5 GB. [2018-11-18 16:46:41,573 INFO L168 Benchmark]: Boogie Preprocessor took 19.46 ms. Allocated memory is still 1.0 GB. Free memory is still 939.3 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-11-18 16:46:41,573 INFO L168 Benchmark]: RCFGBuilder took 222.72 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 150.5 MB). Free memory was 939.3 MB in the beginning and 1.1 GB in the end (delta: -192.1 MB). Peak memory consumption was 14.7 MB. Max. memory is 11.5 GB. [2018-11-18 16:46:41,573 INFO L168 Benchmark]: TraceAbstraction took 350.85 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: 24.1 MB). Peak memory consumption was 24.1 MB. Max. memory is 11.5 GB. [2018-11-18 16:46:41,574 INFO L168 Benchmark]: Witness Printer took 40.71 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 3.3 MB). Peak memory consumption was 3.3 MB. Max. memory is 11.5 GB. [2018-11-18 16:46:41,577 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.19 ms. Allocated memory is still 1.0 GB. Free memory is still 980.1 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 183.26 ms. Allocated memory is still 1.0 GB. Free memory was 952.7 MB in the beginning and 941.9 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 15.86 ms. Allocated memory is still 1.0 GB. Free memory was 941.9 MB in the beginning and 939.3 MB in the end (delta: 2.7 MB). Peak memory consumption was 2.7 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 19.46 ms. Allocated memory is still 1.0 GB. Free memory is still 939.3 MB. There was no memory consumed. Max. memory is 11.5 GB. * RCFGBuilder took 222.72 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 150.5 MB). Free memory was 939.3 MB in the beginning and 1.1 GB in the end (delta: -192.1 MB). Peak memory consumption was 14.7 MB. Max. memory is 11.5 GB. * TraceAbstraction took 350.85 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: 24.1 MB). Peak memory consumption was 24.1 MB. Max. memory is 11.5 GB. * Witness Printer took 40.71 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 3.3 MB). Peak memory consumption was 3.3 MB. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 9]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 17 locations, 1 error locations. SAFE Result, 0.3s OverallTime, 1 OverallIterations, 1 TraceHistogramMax, 0.0s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 10 SDtfs, 1 SDslu, 8 SDs, 0 SdLazy, 2 SolverSat, 0 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=17occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s AbstIntTime, 0 AbstIntIterations, 0 AbstIntStrong, NaN AbsIntWeakeningRatio, NaN AbsIntAvgWeakeningVarsNumRemoved, NaN AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 1 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 6 LocationsWithAnnotation, 6 PreInvPairs, 6 NumberOfFragments, 6 HoareAnnotationTreeSize, 6 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 6 FomulaSimplificationsInter, 0 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 9 NumberOfCodeBlocks, 9 NumberOfCodeBlocksAsserted, 1 NumberOfCheckSat, 8 ConstructedInterpolants, 0 QuantifiedInterpolants, 80 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 1 InterpolantComputations, 1 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...