./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/loop-invgen/MADWiFi-encode_ie_ok_true-unreach-call_true-termination.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version aa418289 Calling Ultimate with: java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/working_dir_d3f85b02-83d9-4566-81c9-08e56d0bb56a/bin-2019/utaipan/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/working_dir_d3f85b02-83d9-4566-81c9-08e56d0bb56a/bin-2019/utaipan/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/working_dir_d3f85b02-83d9-4566-81c9-08e56d0bb56a/bin-2019/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/working_dir_d3f85b02-83d9-4566-81c9-08e56d0bb56a/bin-2019/utaipan/config/TaipanReach.xml -i ../../sv-benchmarks/c/loop-invgen/MADWiFi-encode_ie_ok_true-unreach-call_true-termination.i -s /tmp/vcloud-vcloud-master/worker/working_dir_d3f85b02-83d9-4566-81c9-08e56d0bb56a/bin-2019/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/working_dir_d3f85b02-83d9-4566-81c9-08e56d0bb56a/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 77e92a11a4549a6f714898b45c2d349723607a29 ................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.1.23-aa41828 [2018-11-23 05:45:31,813 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-11-23 05:45:31,814 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-11-23 05:45:31,822 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-11-23 05:45:31,822 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-11-23 05:45:31,823 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-11-23 05:45:31,824 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-11-23 05:45:31,825 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-11-23 05:45:31,826 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-11-23 05:45:31,827 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-11-23 05:45:31,827 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-11-23 05:45:31,828 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-11-23 05:45:31,828 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-11-23 05:45:31,829 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-11-23 05:45:31,830 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-11-23 05:45:31,831 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-11-23 05:45:31,831 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-11-23 05:45:31,833 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-11-23 05:45:31,834 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-11-23 05:45:31,835 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-11-23 05:45:31,836 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-11-23 05:45:31,837 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-11-23 05:45:31,839 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-11-23 05:45:31,839 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-11-23 05:45:31,839 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-11-23 05:45:31,840 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-11-23 05:45:31,841 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-11-23 05:45:31,841 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-11-23 05:45:31,842 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-11-23 05:45:31,843 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-11-23 05:45:31,843 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-11-23 05:45:31,844 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-11-23 05:45:31,844 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-11-23 05:45:31,844 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-11-23 05:45:31,845 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-11-23 05:45:31,845 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-11-23 05:45:31,846 INFO L98 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/working_dir_d3f85b02-83d9-4566-81c9-08e56d0bb56a/bin-2019/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf [2018-11-23 05:45:31,856 INFO L110 SettingsManager]: Loading preferences was successful [2018-11-23 05:45:31,856 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-11-23 05:45:31,857 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-11-23 05:45:31,857 INFO L133 SettingsManager]: * ... calls to implemented procedures=ONLY_FOR_CONCURRENT_PROGRAMS [2018-11-23 05:45:31,857 INFO L133 SettingsManager]: * User list type=DISABLED [2018-11-23 05:45:31,857 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-11-23 05:45:31,857 INFO L133 SettingsManager]: * Explicit value domain=true [2018-11-23 05:45:31,857 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-11-23 05:45:31,858 INFO L133 SettingsManager]: * Octagon Domain=false [2018-11-23 05:45:31,858 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-11-23 05:45:31,858 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-11-23 05:45:31,858 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-11-23 05:45:31,858 INFO L133 SettingsManager]: * Interval Domain=false [2018-11-23 05:45:31,859 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-11-23 05:45:31,859 INFO L133 SettingsManager]: * sizeof long=4 [2018-11-23 05:45:31,859 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-11-23 05:45:31,859 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-11-23 05:45:31,859 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-11-23 05:45:31,859 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-11-23 05:45:31,859 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-11-23 05:45:31,860 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-11-23 05:45:31,860 INFO L133 SettingsManager]: * sizeof long double=12 [2018-11-23 05:45:31,860 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-11-23 05:45:31,860 INFO L133 SettingsManager]: * Use constant arrays=true [2018-11-23 05:45:31,860 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-11-23 05:45:31,860 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-11-23 05:45:31,860 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-11-23 05:45:31,861 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-11-23 05:45:31,861 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-11-23 05:45:31,861 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-11-23 05:45:31,861 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-11-23 05:45:31,861 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-11-23 05:45:31,861 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-11-23 05:45:31,861 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-11-23 05:45:31,861 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-11-23 05:45:31,861 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-11-23 05:45:31,861 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-11-23 05:45:31,861 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_d3f85b02-83d9-4566-81c9-08e56d0bb56a/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 -> 77e92a11a4549a6f714898b45c2d349723607a29 [2018-11-23 05:45:31,884 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-11-23 05:45:31,892 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-11-23 05:45:31,894 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-11-23 05:45:31,895 INFO L271 PluginConnector]: Initializing CDTParser... [2018-11-23 05:45:31,896 INFO L276 PluginConnector]: CDTParser initialized [2018-11-23 05:45:31,896 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/working_dir_d3f85b02-83d9-4566-81c9-08e56d0bb56a/bin-2019/utaipan/../../sv-benchmarks/c/loop-invgen/MADWiFi-encode_ie_ok_true-unreach-call_true-termination.i [2018-11-23 05:45:31,934 INFO L221 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_d3f85b02-83d9-4566-81c9-08e56d0bb56a/bin-2019/utaipan/data/55b76268d/55713a545c354c13abc84773ead792de/FLAG77b9252a6 [2018-11-23 05:45:32,269 INFO L307 CDTParser]: Found 1 translation units. [2018-11-23 05:45:32,269 INFO L161 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/working_dir_d3f85b02-83d9-4566-81c9-08e56d0bb56a/sv-benchmarks/c/loop-invgen/MADWiFi-encode_ie_ok_true-unreach-call_true-termination.i [2018-11-23 05:45:32,273 INFO L355 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_d3f85b02-83d9-4566-81c9-08e56d0bb56a/bin-2019/utaipan/data/55b76268d/55713a545c354c13abc84773ead792de/FLAG77b9252a6 [2018-11-23 05:45:32,697 INFO L363 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/working_dir_d3f85b02-83d9-4566-81c9-08e56d0bb56a/bin-2019/utaipan/data/55b76268d/55713a545c354c13abc84773ead792de [2018-11-23 05:45:32,699 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-11-23 05:45:32,700 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2018-11-23 05:45:32,701 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-11-23 05:45:32,701 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-11-23 05:45:32,704 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-11-23 05:45:32,705 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 05:45:32" (1/1) ... [2018-11-23 05:45:32,707 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4a16ae76 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 05:45:32, skipping insertion in model container [2018-11-23 05:45:32,708 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 05:45:32" (1/1) ... [2018-11-23 05:45:32,718 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-11-23 05:45:32,733 INFO L176 MainTranslator]: Built tables and reachable declarations [2018-11-23 05:45:32,840 INFO L201 PostProcessor]: Analyzing one entry point: main [2018-11-23 05:45:32,843 INFO L191 MainTranslator]: Completed pre-run [2018-11-23 05:45:32,853 INFO L201 PostProcessor]: Analyzing one entry point: main [2018-11-23 05:45:32,861 INFO L195 MainTranslator]: Completed translation [2018-11-23 05:45:32,862 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 05:45:32 WrapperNode [2018-11-23 05:45:32,862 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-11-23 05:45:32,862 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-11-23 05:45:32,862 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-11-23 05:45:32,862 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-11-23 05:45:32,868 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 05:45:32" (1/1) ... [2018-11-23 05:45:32,871 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 05:45:32" (1/1) ... [2018-11-23 05:45:32,876 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-11-23 05:45:32,876 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-11-23 05:45:32,876 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-11-23 05:45:32,876 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-11-23 05:45:32,882 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 05:45:32" (1/1) ... [2018-11-23 05:45:32,882 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 05:45:32" (1/1) ... [2018-11-23 05:45:32,883 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 05:45:32" (1/1) ... [2018-11-23 05:45:32,883 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 05:45:32" (1/1) ... [2018-11-23 05:45:32,886 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 05:45:32" (1/1) ... [2018-11-23 05:45:32,890 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 05:45:32" (1/1) ... [2018-11-23 05:45:32,891 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 05:45:32" (1/1) ... [2018-11-23 05:45:32,892 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-11-23 05:45:32,892 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-11-23 05:45:32,892 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-11-23 05:45:32,893 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-11-23 05:45:32,893 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 05:45:32" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_d3f85b02-83d9-4566-81c9-08e56d0bb56a/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 [2018-11-23 05:45:32,968 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-11-23 05:45:32,969 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-11-23 05:45:32,969 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-11-23 05:45:32,969 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-11-23 05:45:32,969 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-11-23 05:45:32,969 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-11-23 05:45:32,969 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2018-11-23 05:45:32,969 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2018-11-23 05:45:33,116 INFO L275 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-11-23 05:45:33,116 INFO L280 CfgBuilder]: Removed 1 assue(true) statements. [2018-11-23 05:45:33,116 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 05:45:33 BoogieIcfgContainer [2018-11-23 05:45:33,117 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-11-23 05:45:33,117 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-11-23 05:45:33,117 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-11-23 05:45:33,120 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-11-23 05:45:33,120 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.11 05:45:32" (1/3) ... [2018-11-23 05:45:33,121 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@13e29ae2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 05:45:33, skipping insertion in model container [2018-11-23 05:45:33,121 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 05:45:32" (2/3) ... [2018-11-23 05:45:33,122 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@13e29ae2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 05:45:33, skipping insertion in model container [2018-11-23 05:45:33,122 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 05:45:33" (3/3) ... [2018-11-23 05:45:33,123 INFO L112 eAbstractionObserver]: Analyzing ICFG MADWiFi-encode_ie_ok_true-unreach-call_true-termination.i [2018-11-23 05:45:33,132 INFO L156 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-11-23 05:45:33,142 INFO L168 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-11-23 05:45:33,157 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-11-23 05:45:33,183 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-11-23 05:45:33,183 INFO L383 AbstractCegarLoop]: Hoare is true [2018-11-23 05:45:33,183 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-11-23 05:45:33,183 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-11-23 05:45:33,183 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-11-23 05:45:33,184 INFO L387 AbstractCegarLoop]: Difference is false [2018-11-23 05:45:33,184 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-11-23 05:45:33,184 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-11-23 05:45:33,199 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states. [2018-11-23 05:45:33,204 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2018-11-23 05:45:33,204 INFO L394 BasicCegarLoop]: Found error trace [2018-11-23 05:45:33,205 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-23 05:45:33,207 INFO L423 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-23 05:45:33,212 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-23 05:45:33,212 INFO L82 PathProgramCache]: Analyzing trace with hash -1770779542, now seen corresponding path program 1 times [2018-11-23 05:45:33,214 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-23 05:45:33,251 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 05:45:33,251 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-23 05:45:33,251 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 05:45:33,251 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-23 05:45:33,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-23 05:45:33,377 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-23 05:45:33,378 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-23 05:45:33,379 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-11-23 05:45:33,379 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-23 05:45:33,381 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-11-23 05:45:33,389 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-11-23 05:45:33,389 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2018-11-23 05:45:33,391 INFO L87 Difference]: Start difference. First operand 28 states. Second operand 6 states. [2018-11-23 05:45:33,467 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-23 05:45:33,467 INFO L93 Difference]: Finished difference Result 51 states and 67 transitions. [2018-11-23 05:45:33,467 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-11-23 05:45:33,469 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 18 [2018-11-23 05:45:33,469 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-23 05:45:33,474 INFO L225 Difference]: With dead ends: 51 [2018-11-23 05:45:33,474 INFO L226 Difference]: Without dead ends: 28 [2018-11-23 05:45:33,476 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2018-11-23 05:45:33,487 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states. [2018-11-23 05:45:33,502 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 28. [2018-11-23 05:45:33,503 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2018-11-23 05:45:33,503 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 28 transitions. [2018-11-23 05:45:33,504 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 28 transitions. Word has length 18 [2018-11-23 05:45:33,505 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-23 05:45:33,505 INFO L480 AbstractCegarLoop]: Abstraction has 28 states and 28 transitions. [2018-11-23 05:45:33,505 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-11-23 05:45:33,505 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 28 transitions. [2018-11-23 05:45:33,505 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2018-11-23 05:45:33,505 INFO L394 BasicCegarLoop]: Found error trace [2018-11-23 05:45:33,506 INFO L402 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-23 05:45:33,506 INFO L423 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-23 05:45:33,506 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-23 05:45:33,506 INFO L82 PathProgramCache]: Analyzing trace with hash -1769173835, now seen corresponding path program 1 times [2018-11-23 05:45:33,506 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-23 05:45:33,507 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 05:45:33,507 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-23 05:45:33,507 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 05:45:33,507 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-23 05:45:33,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-23 05:45:33,599 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-23 05:45:33,599 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-23 05:45:33,600 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-23 05:45:33,600 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 24 with the following transitions: [2018-11-23 05:45:33,602 INFO L202 CegarAbsIntRunner]: [0], [4], [8], [12], [16], [19], [25], [31], [39], [44], [52], [62], [65], [67], [70], [72], [73], [74], [75], [77], [78], [79] [2018-11-23 05:45:33,629 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2018-11-23 05:45:33,630 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-23 05:45:33,718 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2018-11-23 05:45:33,718 INFO L272 AbstractInterpreter]: Visited 22 different actions 27 times. Never merged. Never widened. Performed 62 root evaluator evaluations with a maximum evaluation depth of 4. Performed 62 inverse root evaluator evaluations with a maximum inverse evaluation depth of 4. Never found a fixpoint. Largest state had 9 variables. [2018-11-23 05:45:33,722 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-23 05:45:33,723 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2018-11-23 05:45:33,723 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-23 05:45:33,723 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_d3f85b02-83d9-4566-81c9-08e56d0bb56a/bin-2019/utaipan/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-23 05:45:33,729 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-23 05:45:33,730 INFO L286 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-11-23 05:45:33,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-23 05:45:33,746 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-23 05:45:33,783 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-23 05:45:33,783 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-11-23 05:45:33,831 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-23 05:45:33,857 INFO L312 seRefinementStrategy]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2018-11-23 05:45:33,857 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6, 6] imperfect sequences [7] total 11 [2018-11-23 05:45:33,858 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-23 05:45:33,858 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-11-23 05:45:33,858 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-11-23 05:45:33,858 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2018-11-23 05:45:33,859 INFO L87 Difference]: Start difference. First operand 28 states and 28 transitions. Second operand 6 states. [2018-11-23 05:45:33,920 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-23 05:45:33,921 INFO L93 Difference]: Finished difference Result 38 states and 39 transitions. [2018-11-23 05:45:33,921 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-11-23 05:45:33,921 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 23 [2018-11-23 05:45:33,921 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-23 05:45:33,922 INFO L225 Difference]: With dead ends: 38 [2018-11-23 05:45:33,922 INFO L226 Difference]: Without dead ends: 36 [2018-11-23 05:45:33,923 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 44 SyntacticMatches, 1 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=38, Invalid=118, Unknown=0, NotChecked=0, Total=156 [2018-11-23 05:45:33,923 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2018-11-23 05:45:33,929 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 35. [2018-11-23 05:45:33,929 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2018-11-23 05:45:33,930 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 36 transitions. [2018-11-23 05:45:33,930 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 36 transitions. Word has length 23 [2018-11-23 05:45:33,930 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-23 05:45:33,930 INFO L480 AbstractCegarLoop]: Abstraction has 35 states and 36 transitions. [2018-11-23 05:45:33,931 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-11-23 05:45:33,931 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 36 transitions. [2018-11-23 05:45:33,932 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2018-11-23 05:45:33,932 INFO L394 BasicCegarLoop]: Found error trace [2018-11-23 05:45:33,932 INFO L402 BasicCegarLoop]: trace histogram [4, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-23 05:45:33,932 INFO L423 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-23 05:45:33,932 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-23 05:45:33,933 INFO L82 PathProgramCache]: Analyzing trace with hash 1089945877, now seen corresponding path program 1 times [2018-11-23 05:45:33,933 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-23 05:45:33,934 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 05:45:33,934 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-23 05:45:33,934 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 05:45:33,934 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-23 05:45:33,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-23 05:45:34,004 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 5 proven. 9 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2018-11-23 05:45:34,005 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-23 05:45:34,005 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-23 05:45:34,005 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 37 with the following transitions: [2018-11-23 05:45:34,005 INFO L202 CegarAbsIntRunner]: [0], [4], [8], [12], [16], [19], [25], [31], [39], [44], [52], [55], [57], [62], [65], [67], [70], [72], [73], [74], [75], [77], [78], [79], [80] [2018-11-23 05:45:34,007 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2018-11-23 05:45:34,007 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-23 05:45:34,075 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2018-11-23 05:45:34,075 INFO L272 AbstractInterpreter]: Visited 25 different actions 98 times. Merged at 5 different actions 20 times. Never widened. Performed 198 root evaluator evaluations with a maximum evaluation depth of 4. Performed 198 inverse root evaluator evaluations with a maximum inverse evaluation depth of 4. Found 1 fixpoints after 1 different actions. Largest state had 10 variables. [2018-11-23 05:45:34,077 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-23 05:45:34,077 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2018-11-23 05:45:34,077 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-23 05:45:34,077 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_d3f85b02-83d9-4566-81c9-08e56d0bb56a/bin-2019/utaipan/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-23 05:45:34,086 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-23 05:45:34,086 INFO L286 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-11-23 05:45:34,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-23 05:45:34,107 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-23 05:45:34,226 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 6 proven. 3 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2018-11-23 05:45:34,227 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-11-23 05:45:34,366 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 6 proven. 3 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2018-11-23 05:45:34,384 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2018-11-23 05:45:34,384 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 18 [2018-11-23 05:45:34,384 INFO L249 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-11-23 05:45:34,385 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2018-11-23 05:45:34,385 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2018-11-23 05:45:34,385 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=59, Invalid=247, Unknown=0, NotChecked=0, Total=306 [2018-11-23 05:45:34,385 INFO L87 Difference]: Start difference. First operand 35 states and 36 transitions. Second operand 14 states. [2018-11-23 05:45:34,525 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-23 05:45:34,525 INFO L93 Difference]: Finished difference Result 41 states and 44 transitions. [2018-11-23 05:45:34,526 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2018-11-23 05:45:34,526 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 36 [2018-11-23 05:45:34,526 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-23 05:45:34,526 INFO L225 Difference]: With dead ends: 41 [2018-11-23 05:45:34,527 INFO L226 Difference]: Without dead ends: 0 [2018-11-23 05:45:34,527 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 89 GetRequests, 64 SyntacticMatches, 3 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 100 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=116, Invalid=436, Unknown=0, NotChecked=0, Total=552 [2018-11-23 05:45:34,528 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2018-11-23 05:45:34,528 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2018-11-23 05:45:34,528 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2018-11-23 05:45:34,528 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2018-11-23 05:45:34,529 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 36 [2018-11-23 05:45:34,529 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-23 05:45:34,529 INFO L480 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2018-11-23 05:45:34,529 INFO L481 AbstractCegarLoop]: Interpolant automaton has 14 states. [2018-11-23 05:45:34,529 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2018-11-23 05:45:34,530 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2018-11-23 05:45:34,533 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2018-11-23 05:45:34,611 INFO L451 ceAbstractionStarter]: At program point ULTIMATE.initFINAL(line -1) the Hoare annotation is: true [2018-11-23 05:45:34,612 INFO L448 ceAbstractionStarter]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2018-11-23 05:45:34,612 INFO L448 ceAbstractionStarter]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2018-11-23 05:45:34,612 INFO L451 ceAbstractionStarter]: At program point L-1(line -1) the Hoare annotation is: true [2018-11-23 05:45:34,612 INFO L451 ceAbstractionStarter]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2018-11-23 05:45:34,612 INFO L448 ceAbstractionStarter]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2018-11-23 05:45:34,612 INFO L448 ceAbstractionStarter]: For program point L35-2(lines 35 39) no Hoare annotation was computed. [2018-11-23 05:45:34,612 INFO L444 ceAbstractionStarter]: At program point L35-3(lines 35 39) the Hoare annotation is: (and (<= (+ main_~p~0 (* 2 main_~ielen~0)) (+ main_~bufsize_0~0 (* 2 main_~i~0))) (<= 1 main_~leader_len~0) (<= 1 main_~p~0)) [2018-11-23 05:45:34,612 INFO L448 ceAbstractionStarter]: For program point mainEXIT(lines 10 42) no Hoare annotation was computed. [2018-11-23 05:45:34,612 INFO L448 ceAbstractionStarter]: For program point L23(line 23) no Hoare annotation was computed. [2018-11-23 05:45:34,612 INFO L451 ceAbstractionStarter]: At program point L40(lines 10 42) the Hoare annotation is: true [2018-11-23 05:45:34,613 INFO L444 ceAbstractionStarter]: At program point L36(line 36) the Hoare annotation is: (and (<= (+ main_~p~0 (* 2 main_~ielen~0)) (+ main_~bufsize_0~0 (* 2 main_~i~0))) (<= 1 main_~leader_len~0) (<= (+ main_~p~0 2) main_~bufsize_0~0) (<= 1 main_~p~0)) [2018-11-23 05:45:34,613 INFO L444 ceAbstractionStarter]: At program point L36-1(line 36) the Hoare annotation is: (and (<= (+ main_~p~0 (* 2 main_~ielen~0)) (+ main_~bufsize_0~0 (* 2 main_~i~0))) (<= 1 main_~leader_len~0) (<= (+ main_~p~0 2) main_~bufsize_0~0) (<= 1 main_~p~0)) [2018-11-23 05:45:34,613 INFO L448 ceAbstractionStarter]: For program point L24(line 24) no Hoare annotation was computed. [2018-11-23 05:45:34,613 INFO L448 ceAbstractionStarter]: For program point L24-1(lines 11 42) no Hoare annotation was computed. [2018-11-23 05:45:34,613 INFO L448 ceAbstractionStarter]: For program point L37(line 37) no Hoare annotation was computed. [2018-11-23 05:45:34,613 INFO L448 ceAbstractionStarter]: For program point L33(lines 33 34) no Hoare annotation was computed. [2018-11-23 05:45:34,613 INFO L448 ceAbstractionStarter]: For program point L25(lines 11 42) no Hoare annotation was computed. [2018-11-23 05:45:34,613 INFO L448 ceAbstractionStarter]: For program point L21(line 21) no Hoare annotation was computed. [2018-11-23 05:45:34,613 INFO L451 ceAbstractionStarter]: At program point mainENTRY(lines 10 42) the Hoare annotation is: true [2018-11-23 05:45:34,613 INFO L448 ceAbstractionStarter]: For program point L26(lines 11 42) no Hoare annotation was computed. [2018-11-23 05:45:34,613 INFO L448 ceAbstractionStarter]: For program point L22(line 22) no Hoare annotation was computed. [2018-11-23 05:45:34,614 INFO L451 ceAbstractionStarter]: At program point __VERIFIER_assertENTRY(lines 3 8) the Hoare annotation is: true [2018-11-23 05:45:34,614 INFO L448 ceAbstractionStarter]: For program point __VERIFIER_assertEXIT(lines 3 8) no Hoare annotation was computed. [2018-11-23 05:45:34,614 INFO L448 ceAbstractionStarter]: For program point L5(line 5) no Hoare annotation was computed. [2018-11-23 05:45:34,614 INFO L448 ceAbstractionStarter]: For program point __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION(line 5) no Hoare annotation was computed. [2018-11-23 05:45:34,614 INFO L448 ceAbstractionStarter]: For program point L4(lines 4 6) no Hoare annotation was computed. [2018-11-23 05:45:34,614 INFO L448 ceAbstractionStarter]: For program point L4-2(lines 3 8) no Hoare annotation was computed. [2018-11-23 05:45:34,622 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 23.11 05:45:34 BoogieIcfgContainer [2018-11-23 05:45:34,622 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-11-23 05:45:34,622 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2018-11-23 05:45:34,622 INFO L271 PluginConnector]: Initializing Witness Printer... [2018-11-23 05:45:34,623 INFO L276 PluginConnector]: Witness Printer initialized [2018-11-23 05:45:34,623 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 05:45:33" (3/4) ... [2018-11-23 05:45:34,625 INFO L144 WitnessPrinter]: Generating witness for correct program [2018-11-23 05:45:34,628 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure ULTIMATE.init [2018-11-23 05:45:34,629 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure main [2018-11-23 05:45:34,629 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure __VERIFIER_assert [2018-11-23 05:45:34,631 INFO L879 BoogieBacktranslator]: Reduced CFG by removing 8 nodes and edges [2018-11-23 05:45:34,631 INFO L879 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2018-11-23 05:45:34,631 INFO L879 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2018-11-23 05:45:34,661 INFO L145 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/working_dir_d3f85b02-83d9-4566-81c9-08e56d0bb56a/bin-2019/utaipan/witness.graphml [2018-11-23 05:45:34,662 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2018-11-23 05:45:34,662 INFO L168 Benchmark]: Toolchain (without parser) took 1962.68 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 153.1 MB). Free memory was 958.2 MB in the beginning and 939.8 MB in the end (delta: 18.4 MB). Peak memory consumption was 171.5 MB. Max. memory is 11.5 GB. [2018-11-23 05:45:34,663 INFO L168 Benchmark]: CDTParser took 0.13 ms. Allocated memory is still 1.0 GB. Free memory is still 985.5 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-11-23 05:45:34,663 INFO L168 Benchmark]: CACSL2BoogieTranslator took 160.87 ms. Allocated memory is still 1.0 GB. Free memory was 958.2 MB in the beginning and 947.4 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. [2018-11-23 05:45:34,664 INFO L168 Benchmark]: Boogie Procedure Inliner took 13.42 ms. Allocated memory is still 1.0 GB. Free memory was 947.4 MB in the beginning and 944.7 MB in the end (delta: 2.7 MB). Peak memory consumption was 2.7 MB. Max. memory is 11.5 GB. [2018-11-23 05:45:34,664 INFO L168 Benchmark]: Boogie Preprocessor took 16.18 ms. Allocated memory is still 1.0 GB. Free memory is still 944.7 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-11-23 05:45:34,664 INFO L168 Benchmark]: RCFGBuilder took 224.26 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 153.1 MB). Free memory was 944.7 MB in the beginning and 1.1 GB in the end (delta: -188.8 MB). Peak memory consumption was 19.7 MB. Max. memory is 11.5 GB. [2018-11-23 05:45:34,665 INFO L168 Benchmark]: TraceAbstraction took 1504.81 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 943.0 MB in the end (delta: 187.3 MB). Peak memory consumption was 187.3 MB. Max. memory is 11.5 GB. [2018-11-23 05:45:34,665 INFO L168 Benchmark]: Witness Printer took 39.40 ms. Allocated memory is still 1.2 GB. Free memory was 943.0 MB in the beginning and 939.8 MB in the end (delta: 3.3 MB). Peak memory consumption was 3.3 MB. Max. memory is 11.5 GB. [2018-11-23 05:45:34,666 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.13 ms. Allocated memory is still 1.0 GB. Free memory is still 985.5 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 160.87 ms. Allocated memory is still 1.0 GB. Free memory was 958.2 MB in the beginning and 947.4 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 13.42 ms. Allocated memory is still 1.0 GB. Free memory was 947.4 MB in the beginning and 944.7 MB in the end (delta: 2.7 MB). Peak memory consumption was 2.7 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 16.18 ms. Allocated memory is still 1.0 GB. Free memory is still 944.7 MB. There was no memory consumed. Max. memory is 11.5 GB. * RCFGBuilder took 224.26 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 153.1 MB). Free memory was 944.7 MB in the beginning and 1.1 GB in the end (delta: -188.8 MB). Peak memory consumption was 19.7 MB. Max. memory is 11.5 GB. * TraceAbstraction took 1504.81 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 943.0 MB in the end (delta: 187.3 MB). Peak memory consumption was 187.3 MB. Max. memory is 11.5 GB. * Witness Printer took 39.40 ms. Allocated memory is still 1.2 GB. Free memory was 943.0 MB in the beginning and 939.8 MB 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: 5]: 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 - InvariantResult [Line: 10]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 35]: Loop Invariant Derived loop invariant: (p + 2 * ielen <= bufsize_0 + 2 * i && 1 <= leader_len) && 1 <= p - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 28 locations, 1 error locations. SAFE Result, 1.4s OverallTime, 3 OverallIterations, 4 TraceHistogramMax, 0.3s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 76 SDtfs, 40 SDslu, 291 SDs, 0 SdLazy, 176 SolverSat, 27 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 153 GetRequests, 110 SyntacticMatches, 4 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 111 ImplicationChecksByTransitivity, 0.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=35occurred in iteration=2, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.1s AbstIntTime, 2 AbstIntIterations, 0 AbstIntStrong, NaN AbsIntWeakeningRatio, NaN AbsIntAvgWeakeningVarsNumRemoved, NaN AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 3 MinimizatonAttempts, 1 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 9 LocationsWithAnnotation, 16 PreInvPairs, 28 NumberOfFragments, 70 HoareAnnotationTreeSize, 16 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 9 FomulaSimplificationsInter, 156 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.5s InterpolantComputationTime, 136 NumberOfCodeBlocks, 136 NumberOfCodeBlocksAsserted, 5 NumberOfCheckSat, 188 ConstructedInterpolants, 1 QuantifiedInterpolants, 16338 SizeOfPredicates, 15 NumberOfNonLiveVariables, 140 ConjunctsInSsa, 24 ConjunctsInUnsatCore, 7 InterpolantComputations, 3 PerfectInterpolantSequences, 53/69 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...