./Ultimate.py --spec ../../sv-benchmarks/c/ReachSafety.prp --file ../../sv-benchmarks/c/float-newlib/float_req_bl_1232a_true-unreach-call.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 1dbac8bc Calling Ultimate with: java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/working_dir_b8563d0f-af22-4bd8-8984-de1aa1a7c271/bin-2019/utaipan/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/working_dir_b8563d0f-af22-4bd8-8984-de1aa1a7c271/bin-2019/utaipan/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/working_dir_b8563d0f-af22-4bd8-8984-de1aa1a7c271/bin-2019/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/working_dir_b8563d0f-af22-4bd8-8984-de1aa1a7c271/bin-2019/utaipan/config/TaipanReach.xml -i ../../sv-benchmarks/c/float-newlib/float_req_bl_1232a_true-unreach-call.c -s /tmp/vcloud-vcloud-master/worker/working_dir_b8563d0f-af22-4bd8-8984-de1aa1a7c271/bin-2019/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/working_dir_b8563d0f-af22-4bd8-8984-de1aa1a7c271/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 cd0c8f7b91fa815011541d5ffb41102d34132ba8 ...................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis Calling Ultimate with: java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/working_dir_b8563d0f-af22-4bd8-8984-de1aa1a7c271/bin-2019/utaipan/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/working_dir_b8563d0f-af22-4bd8-8984-de1aa1a7c271/bin-2019/utaipan/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/working_dir_b8563d0f-af22-4bd8-8984-de1aa1a7c271/bin-2019/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/working_dir_b8563d0f-af22-4bd8-8984-de1aa1a7c271/bin-2019/utaipan/config/TaipanReach.xml -i ../../sv-benchmarks/c/float-newlib/float_req_bl_1232a_true-unreach-call.c -s /tmp/vcloud-vcloud-master/worker/working_dir_b8563d0f-af22-4bd8-8984-de1aa1a7c271/bin-2019/utaipan/config/svcomp-Reach-32bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/working_dir_b8563d0f-af22-4bd8-8984-de1aa1a7c271/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 cd0c8f7b91fa815011541d5ffb41102d34132ba8 ............................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................. Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.1.23-1dbac8b [2018-10-26 21:21:03,854 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-10-26 21:21:03,856 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-10-26 21:21:03,866 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-10-26 21:21:03,867 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-10-26 21:21:03,868 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-10-26 21:21:03,871 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-10-26 21:21:03,873 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-10-26 21:21:03,875 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-10-26 21:21:03,877 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-10-26 21:21:03,879 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-10-26 21:21:03,879 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-10-26 21:21:03,880 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-10-26 21:21:03,883 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-10-26 21:21:03,889 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-10-26 21:21:03,890 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-10-26 21:21:03,891 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-10-26 21:21:03,892 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-10-26 21:21:03,893 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-10-26 21:21:03,897 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-10-26 21:21:03,898 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-10-26 21:21:03,900 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-10-26 21:21:03,903 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-10-26 21:21:03,905 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-10-26 21:21:03,906 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-10-26 21:21:03,906 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-10-26 21:21:03,907 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-10-26 21:21:03,908 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-10-26 21:21:03,908 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-10-26 21:21:03,909 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-10-26 21:21:03,909 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-10-26 21:21:03,913 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-10-26 21:21:03,914 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-10-26 21:21:03,915 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-10-26 21:21:03,916 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-10-26 21:21:03,917 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-10-26 21:21:03,918 INFO L98 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/working_dir_b8563d0f-af22-4bd8-8984-de1aa1a7c271/bin-2019/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf [2018-10-26 21:21:03,933 INFO L110 SettingsManager]: Loading preferences was successful [2018-10-26 21:21:03,934 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-10-26 21:21:03,935 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-10-26 21:21:03,936 INFO L133 SettingsManager]: * User list type=DISABLED [2018-10-26 21:21:03,936 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-10-26 21:21:03,936 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-10-26 21:21:03,936 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-10-26 21:21:03,937 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-10-26 21:21:03,937 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-10-26 21:21:03,937 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-10-26 21:21:03,937 INFO L133 SettingsManager]: * Interval Domain=false [2018-10-26 21:21:03,939 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-10-26 21:21:03,940 INFO L133 SettingsManager]: * sizeof long=4 [2018-10-26 21:21:03,940 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-10-26 21:21:03,940 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-10-26 21:21:03,940 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-10-26 21:21:03,940 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-10-26 21:21:03,940 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-10-26 21:21:03,940 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-10-26 21:21:03,941 INFO L133 SettingsManager]: * sizeof long double=12 [2018-10-26 21:21:03,941 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-10-26 21:21:03,941 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-10-26 21:21:03,941 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-10-26 21:21:03,941 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-10-26 21:21:03,941 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-10-26 21:21:03,941 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-10-26 21:21:03,941 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-26 21:21:03,942 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-10-26 21:21:03,942 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-10-26 21:21:03,942 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-10-26 21:21:03,942 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-10-26 21:21:03,942 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-10-26 21:21:03,942 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-10-26 21:21:03,942 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-10-26 21:21:03,943 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_b8563d0f-af22-4bd8-8984-de1aa1a7c271/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 -> cd0c8f7b91fa815011541d5ffb41102d34132ba8 [2018-10-26 21:21:03,977 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-10-26 21:21:03,993 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-10-26 21:21:03,998 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-10-26 21:21:03,999 INFO L271 PluginConnector]: Initializing CDTParser... [2018-10-26 21:21:04,000 INFO L276 PluginConnector]: CDTParser initialized [2018-10-26 21:21:04,000 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/working_dir_b8563d0f-af22-4bd8-8984-de1aa1a7c271/bin-2019/utaipan/../../sv-benchmarks/c/float-newlib/float_req_bl_1232a_true-unreach-call.c [2018-10-26 21:21:04,052 INFO L218 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_b8563d0f-af22-4bd8-8984-de1aa1a7c271/bin-2019/utaipan/data/d1fe8888b/8c39fb1023d5463dbe007b9ca0ef0529/FLAG59d27759d [2018-10-26 21:21:04,424 INFO L298 CDTParser]: Found 1 translation units. [2018-10-26 21:21:04,424 INFO L158 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/working_dir_b8563d0f-af22-4bd8-8984-de1aa1a7c271/sv-benchmarks/c/float-newlib/float_req_bl_1232a_true-unreach-call.c [2018-10-26 21:21:04,431 INFO L346 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_b8563d0f-af22-4bd8-8984-de1aa1a7c271/bin-2019/utaipan/data/d1fe8888b/8c39fb1023d5463dbe007b9ca0ef0529/FLAG59d27759d [2018-10-26 21:21:04,442 INFO L354 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/working_dir_b8563d0f-af22-4bd8-8984-de1aa1a7c271/bin-2019/utaipan/data/d1fe8888b/8c39fb1023d5463dbe007b9ca0ef0529 [2018-10-26 21:21:04,445 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-10-26 21:21:04,446 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2018-10-26 21:21:04,447 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-10-26 21:21:04,447 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-10-26 21:21:04,451 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-10-26 21:21:04,452 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.10 09:21:04" (1/1) ... [2018-10-26 21:21:04,454 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7c289afb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 09:21:04, skipping insertion in model container [2018-10-26 21:21:04,455 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.10 09:21:04" (1/1) ... [2018-10-26 21:21:04,464 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-10-26 21:21:04,481 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-10-26 21:21:04,613 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-26 21:21:04,615 INFO L189 MainTranslator]: Completed pre-run [2018-10-26 21:21:04,634 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-26 21:21:04,652 INFO L193 MainTranslator]: Completed translation [2018-10-26 21:21:04,652 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 09:21:04 WrapperNode [2018-10-26 21:21:04,652 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-10-26 21:21:04,653 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-10-26 21:21:04,653 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-10-26 21:21:04,653 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-10-26 21:21:04,661 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 09:21:04" (1/1) ... [2018-10-26 21:21:04,671 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 09:21:04" (1/1) ... [2018-10-26 21:21:04,690 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-10-26 21:21:04,690 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-10-26 21:21:04,690 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-10-26 21:21:04,690 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-10-26 21:21:04,699 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 09:21:04" (1/1) ... [2018-10-26 21:21:04,699 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 09:21:04" (1/1) ... [2018-10-26 21:21:04,702 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 09:21:04" (1/1) ... [2018-10-26 21:21:04,702 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 09:21:04" (1/1) ... [2018-10-26 21:21:04,708 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 09:21:04" (1/1) ... [2018-10-26 21:21:04,713 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 09:21:04" (1/1) ... [2018-10-26 21:21:04,715 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 09:21:04" (1/1) ... [2018-10-26 21:21:04,717 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-10-26 21:21:04,717 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-10-26 21:21:04,717 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-10-26 21:21:04,717 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-10-26 21:21:04,719 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 09:21:04" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_b8563d0f-af22-4bd8-8984-de1aa1a7c271/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 [2018-10-26 21:21:04,838 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-10-26 21:21:04,839 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-10-26 21:21:04,839 INFO L130 BoogieDeclarations]: Found specification of procedure __fpclassify_float [2018-10-26 21:21:04,839 INFO L138 BoogieDeclarations]: Found implementation of procedure __fpclassify_float [2018-10-26 21:21:04,839 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-10-26 21:21:04,839 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-10-26 21:21:04,840 INFO L130 BoogieDeclarations]: Found specification of procedure fmin_float [2018-10-26 21:21:04,840 INFO L138 BoogieDeclarations]: Found implementation of procedure fmin_float [2018-10-26 21:21:04,840 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-10-26 21:21:04,840 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-10-26 21:21:04,840 INFO L130 BoogieDeclarations]: Found specification of procedure __signbit_float [2018-10-26 21:21:04,840 INFO L138 BoogieDeclarations]: Found implementation of procedure __signbit_float [2018-10-26 21:21:05,321 INFO L341 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-10-26 21:21:05,322 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.10 09:21:05 BoogieIcfgContainer [2018-10-26 21:21:05,322 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-10-26 21:21:05,323 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-10-26 21:21:05,323 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-10-26 21:21:05,326 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-10-26 21:21:05,327 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 26.10 09:21:04" (1/3) ... [2018-10-26 21:21:05,328 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@75617af2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.10 09:21:05, skipping insertion in model container [2018-10-26 21:21:05,328 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 09:21:04" (2/3) ... [2018-10-26 21:21:05,329 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@75617af2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.10 09:21:05, skipping insertion in model container [2018-10-26 21:21:05,329 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.10 09:21:05" (3/3) ... [2018-10-26 21:21:05,331 INFO L112 eAbstractionObserver]: Analyzing ICFG float_req_bl_1232a_true-unreach-call.c [2018-10-26 21:21:05,341 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-10-26 21:21:05,349 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-10-26 21:21:05,365 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-10-26 21:21:05,398 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-10-26 21:21:05,398 INFO L383 AbstractCegarLoop]: Hoare is true [2018-10-26 21:21:05,398 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-10-26 21:21:05,398 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-10-26 21:21:05,398 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-10-26 21:21:05,398 INFO L387 AbstractCegarLoop]: Difference is false [2018-10-26 21:21:05,398 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-10-26 21:21:05,399 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-10-26 21:21:05,416 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states. [2018-10-26 21:21:05,422 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2018-10-26 21:21:05,422 INFO L367 BasicCegarLoop]: Found error trace [2018-10-26 21:21:05,423 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-26 21:21:05,425 INFO L424 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-26 21:21:05,431 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-26 21:21:05,431 INFO L82 PathProgramCache]: Analyzing trace with hash -661845863, now seen corresponding path program 1 times [2018-10-26 21:21:05,433 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-26 21:21:05,482 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 21:21:05,482 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-26 21:21:05,482 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 21:21:05,482 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-26 21:21:05,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-26 21:21:05,560 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-26 21:21:05,562 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-26 21:21:05,563 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-10-26 21:21:05,563 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-26 21:21:05,568 INFO L460 AbstractCegarLoop]: Interpolant automaton has 2 states [2018-10-26 21:21:05,580 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2018-10-26 21:21:05,580 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-10-26 21:21:05,583 INFO L87 Difference]: Start difference. First operand 44 states. Second operand 2 states. [2018-10-26 21:21:05,605 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-26 21:21:05,606 INFO L93 Difference]: Finished difference Result 79 states and 107 transitions. [2018-10-26 21:21:05,606 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2018-10-26 21:21:05,607 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 22 [2018-10-26 21:21:05,608 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-26 21:21:05,616 INFO L225 Difference]: With dead ends: 79 [2018-10-26 21:21:05,617 INFO L226 Difference]: Without dead ends: 40 [2018-10-26 21:21:05,620 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-10-26 21:21:05,638 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40 states. [2018-10-26 21:21:05,657 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40 to 40. [2018-10-26 21:21:05,658 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 40 states. [2018-10-26 21:21:05,660 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 48 transitions. [2018-10-26 21:21:05,661 INFO L78 Accepts]: Start accepts. Automaton has 40 states and 48 transitions. Word has length 22 [2018-10-26 21:21:05,662 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-26 21:21:05,662 INFO L481 AbstractCegarLoop]: Abstraction has 40 states and 48 transitions. [2018-10-26 21:21:05,662 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2018-10-26 21:21:05,662 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 48 transitions. [2018-10-26 21:21:05,665 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2018-10-26 21:21:05,665 INFO L367 BasicCegarLoop]: Found error trace [2018-10-26 21:21:05,665 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-26 21:21:05,665 INFO L424 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-26 21:21:05,666 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-26 21:21:05,666 INFO L82 PathProgramCache]: Analyzing trace with hash 1526822905, now seen corresponding path program 1 times [2018-10-26 21:21:05,666 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-26 21:21:05,667 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 21:21:05,667 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-26 21:21:05,667 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 21:21:05,667 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-26 21:21:05,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-26 21:21:05,796 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-26 21:21:05,796 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-26 21:21:05,796 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-26 21:21:05,797 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-26 21:21:05,798 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-26 21:21:05,798 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-26 21:21:05,798 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-10-26 21:21:05,799 INFO L87 Difference]: Start difference. First operand 40 states and 48 transitions. Second operand 4 states. [2018-10-26 21:21:05,879 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-26 21:21:05,880 INFO L93 Difference]: Finished difference Result 59 states and 69 transitions. [2018-10-26 21:21:05,881 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-26 21:21:05,881 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 23 [2018-10-26 21:21:05,881 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-26 21:21:05,884 INFO L225 Difference]: With dead ends: 59 [2018-10-26 21:21:05,884 INFO L226 Difference]: Without dead ends: 44 [2018-10-26 21:21:05,885 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-10-26 21:21:05,885 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2018-10-26 21:21:05,891 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 44. [2018-10-26 21:21:05,892 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 44 states. [2018-10-26 21:21:05,893 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 53 transitions. [2018-10-26 21:21:05,893 INFO L78 Accepts]: Start accepts. Automaton has 44 states and 53 transitions. Word has length 23 [2018-10-26 21:21:05,893 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-26 21:21:05,893 INFO L481 AbstractCegarLoop]: Abstraction has 44 states and 53 transitions. [2018-10-26 21:21:05,893 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-26 21:21:05,894 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states and 53 transitions. [2018-10-26 21:21:05,894 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2018-10-26 21:21:05,894 INFO L367 BasicCegarLoop]: Found error trace [2018-10-26 21:21:05,895 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-26 21:21:05,895 INFO L424 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-26 21:21:05,895 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-26 21:21:05,895 INFO L82 PathProgramCache]: Analyzing trace with hash -424183008, now seen corresponding path program 1 times [2018-10-26 21:21:05,895 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-26 21:21:05,896 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 21:21:05,896 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-26 21:21:05,897 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 21:21:05,897 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-26 21:21:05,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-26 21:21:06,031 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-26 21:21:06,032 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-26 21:21:06,032 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-26 21:21:06,032 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-26 21:21:06,032 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-26 21:21:06,033 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-26 21:21:06,033 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-10-26 21:21:06,033 INFO L87 Difference]: Start difference. First operand 44 states and 53 transitions. Second operand 4 states. [2018-10-26 21:21:06,127 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-26 21:21:06,127 INFO L93 Difference]: Finished difference Result 63 states and 74 transitions. [2018-10-26 21:21:06,130 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-26 21:21:06,130 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 26 [2018-10-26 21:21:06,131 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-26 21:21:06,131 INFO L225 Difference]: With dead ends: 63 [2018-10-26 21:21:06,131 INFO L226 Difference]: Without dead ends: 48 [2018-10-26 21:21:06,132 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-10-26 21:21:06,132 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48 states. [2018-10-26 21:21:06,136 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48 to 44. [2018-10-26 21:21:06,136 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 44 states. [2018-10-26 21:21:06,137 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 53 transitions. [2018-10-26 21:21:06,138 INFO L78 Accepts]: Start accepts. Automaton has 44 states and 53 transitions. Word has length 26 [2018-10-26 21:21:06,138 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-26 21:21:06,138 INFO L481 AbstractCegarLoop]: Abstraction has 44 states and 53 transitions. [2018-10-26 21:21:06,138 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-26 21:21:06,138 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states and 53 transitions. [2018-10-26 21:21:06,139 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2018-10-26 21:21:06,139 INFO L367 BasicCegarLoop]: Found error trace [2018-10-26 21:21:06,139 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-26 21:21:06,139 INFO L424 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-26 21:21:06,139 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-26 21:21:06,140 INFO L82 PathProgramCache]: Analyzing trace with hash 2073832929, now seen corresponding path program 1 times [2018-10-26 21:21:06,140 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-26 21:21:06,140 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 21:21:06,141 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-26 21:21:06,141 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 21:21:06,141 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-26 21:21:06,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-10-26 21:21:06,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-10-26 21:21:06,210 INFO L442 BasicCegarLoop]: Counterexample might be feasible [2018-10-26 21:21:06,225 WARN L387 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.alloc_#res : $Pointer$ not handled [2018-10-26 21:21:06,225 WARN L387 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList ULTIMATE.dealloc_~addr : $Pointer$ not handled [2018-10-26 21:21:06,226 WARN L387 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.alloc_#res : $Pointer$ not handled [2018-10-26 21:21:06,227 WARN L387 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList ULTIMATE.dealloc_~addr : $Pointer$ not handled [2018-10-26 21:21:06,227 WARN L387 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.alloc_#res : $Pointer$ not handled [2018-10-26 21:21:06,227 WARN L387 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList ULTIMATE.dealloc_~addr : $Pointer$ not handled [2018-10-26 21:21:06,227 WARN L387 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.alloc_#res : $Pointer$ not handled [2018-10-26 21:21:06,228 WARN L387 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList ULTIMATE.dealloc_~addr : $Pointer$ not handled [2018-10-26 21:21:06,228 WARN L387 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.alloc_#res : $Pointer$ not handled [2018-10-26 21:21:06,228 WARN L387 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList ULTIMATE.dealloc_~addr : $Pointer$ not handled [2018-10-26 21:21:06,228 WARN L387 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.alloc_#res : $Pointer$ not handled [2018-10-26 21:21:06,228 WARN L387 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList ULTIMATE.dealloc_~addr : $Pointer$ not handled [2018-10-26 21:21:06,229 WARN L387 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.alloc_#res : $Pointer$ not handled [2018-10-26 21:21:06,229 WARN L387 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList ULTIMATE.dealloc_~addr : $Pointer$ not handled [2018-10-26 21:21:06,229 WARN L387 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.alloc_#res : $Pointer$ not handled [2018-10-26 21:21:06,229 WARN L387 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList ULTIMATE.dealloc_~addr : $Pointer$ not handled [2018-10-26 21:21:06,230 WARN L387 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.alloc_#res : $Pointer$ not handled [2018-10-26 21:21:06,230 WARN L387 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList ULTIMATE.dealloc_~addr : $Pointer$ not handled [2018-10-26 21:21:06,231 WARN L387 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.alloc_#res : $Pointer$ not handled [2018-10-26 21:21:06,231 WARN L387 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList ULTIMATE.dealloc_~addr : $Pointer$ not handled [2018-10-26 21:21:06,231 WARN L387 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.alloc_#res : $Pointer$ not handled [2018-10-26 21:21:06,232 WARN L387 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList ULTIMATE.dealloc_~addr : $Pointer$ not handled [2018-10-26 21:21:06,232 WARN L387 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.alloc_#res : $Pointer$ not handled [2018-10-26 21:21:06,232 WARN L387 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList ULTIMATE.dealloc_~addr : $Pointer$ not handled [2018-10-26 21:21:06,232 WARN L387 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.alloc_#res : $Pointer$ not handled [2018-10-26 21:21:06,232 WARN L387 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList ULTIMATE.dealloc_~addr : $Pointer$ not handled [2018-10-26 21:21:06,233 WARN L387 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.alloc_#res : $Pointer$ not handled [2018-10-26 21:21:06,233 WARN L387 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList ULTIMATE.dealloc_~addr : $Pointer$ not handled [2018-10-26 21:21:06,254 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 26.10 09:21:06 BoogieIcfgContainer [2018-10-26 21:21:06,255 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-10-26 21:21:06,255 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2018-10-26 21:21:06,255 INFO L271 PluginConnector]: Initializing Witness Printer... [2018-10-26 21:21:06,255 INFO L276 PluginConnector]: Witness Printer initialized [2018-10-26 21:21:06,256 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.10 09:21:05" (3/4) ... [2018-10-26 21:21:06,261 INFO L147 WitnessPrinter]: No result that supports witness generation found [2018-10-26 21:21:06,261 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2018-10-26 21:21:06,261 INFO L168 Benchmark]: Toolchain (without parser) took 1816.13 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 124.3 MB). Free memory was 958.5 MB in the beginning and 1.0 GB in the end (delta: -84.1 MB). Peak memory consumption was 40.1 MB. Max. memory is 11.5 GB. [2018-10-26 21:21:06,263 INFO L168 Benchmark]: CDTParser took 0.17 ms. Allocated memory is still 1.0 GB. Free memory is still 977.3 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-10-26 21:21:06,264 INFO L168 Benchmark]: CACSL2BoogieTranslator took 205.39 ms. Allocated memory is still 1.0 GB. Free memory was 958.5 MB in the beginning and 946.4 MB in the end (delta: 12.1 MB). Peak memory consumption was 12.1 MB. Max. memory is 11.5 GB. [2018-10-26 21:21:06,264 INFO L168 Benchmark]: Boogie Procedure Inliner took 37.14 ms. Allocated memory is still 1.0 GB. Free memory was 946.4 MB in the beginning and 941.0 MB in the end (delta: 5.4 MB). Peak memory consumption was 5.4 MB. Max. memory is 11.5 GB. [2018-10-26 21:21:06,265 INFO L168 Benchmark]: Boogie Preprocessor took 26.77 ms. Allocated memory is still 1.0 GB. Free memory is still 941.0 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-10-26 21:21:06,265 INFO L168 Benchmark]: RCFGBuilder took 604.98 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 124.3 MB). Free memory was 941.0 MB in the beginning and 1.1 GB in the end (delta: -150.9 MB). Peak memory consumption was 15.6 MB. Max. memory is 11.5 GB. [2018-10-26 21:21:06,266 INFO L168 Benchmark]: TraceAbstraction took 931.98 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.0 GB in the end (delta: 49.3 MB). Peak memory consumption was 49.3 MB. Max. memory is 11.5 GB. [2018-10-26 21:21:06,266 INFO L168 Benchmark]: Witness Printer took 5.87 ms. Allocated memory is still 1.2 GB. Free memory is still 1.0 GB. There was no memory consumed. Max. memory is 11.5 GB. [2018-10-26 21:21:06,269 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.17 ms. Allocated memory is still 1.0 GB. Free memory is still 977.3 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 205.39 ms. Allocated memory is still 1.0 GB. Free memory was 958.5 MB in the beginning and 946.4 MB in the end (delta: 12.1 MB). Peak memory consumption was 12.1 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 37.14 ms. Allocated memory is still 1.0 GB. Free memory was 946.4 MB in the beginning and 941.0 MB in the end (delta: 5.4 MB). Peak memory consumption was 5.4 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 26.77 ms. Allocated memory is still 1.0 GB. Free memory is still 941.0 MB. There was no memory consumed. Max. memory is 11.5 GB. * RCFGBuilder took 604.98 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 124.3 MB). Free memory was 941.0 MB in the beginning and 1.1 GB in the end (delta: -150.9 MB). Peak memory consumption was 15.6 MB. Max. memory is 11.5 GB. * TraceAbstraction took 931.98 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.0 GB in the end (delta: 49.3 MB). Peak memory consumption was 49.3 MB. Max. memory is 11.5 GB. * Witness Printer took 5.87 ms. Allocated memory is still 1.2 GB. Free memory is still 1.0 GB. There was no memory consumed. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.boogie.preprocessor: - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.alloc_#res : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList ULTIMATE.dealloc_~addr : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.alloc_#res : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList ULTIMATE.dealloc_~addr : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.alloc_#res : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList ULTIMATE.dealloc_~addr : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.alloc_#res : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList ULTIMATE.dealloc_~addr : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.alloc_#res : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList ULTIMATE.dealloc_~addr : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.alloc_#res : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList ULTIMATE.dealloc_~addr : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.alloc_#res : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList ULTIMATE.dealloc_~addr : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.alloc_#res : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList ULTIMATE.dealloc_~addr : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.alloc_#res : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList ULTIMATE.dealloc_~addr : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.alloc_#res : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList ULTIMATE.dealloc_~addr : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.alloc_#res : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList ULTIMATE.dealloc_~addr : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.alloc_#res : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList ULTIMATE.dealloc_~addr : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.alloc_#res : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList ULTIMATE.dealloc_~addr : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.alloc_#res : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList ULTIMATE.dealloc_~addr : $Pointer$ not handled * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 70]: Unable to prove that call of __VERIFIER_error() unreachable Unable to prove that call of __VERIFIER_error() unreachable Reason: overapproximation of someBinaryFLOATComparisonOperation at line 69, overapproximation of someUnaryFLOAToperation at line 65. Possible FailurePath: [L64] float x = 0.0f; [L65] float y = -0.0f; VAL [x=0] [L66] CALL, EXPR fmin_float(x, y) VAL [\old(x)=0, \old(y)=4286578692] [L36] CALL, EXPR __fpclassify_float(x) [L13] __uint32_t w; [L16] CALL ieee_float_shape_type gf_u; [L16] RET ieee_float_shape_type gf_u; [L17] CALL gf_u.value = (x) [L17] RET gf_u.value = (x) [L18] CALL, EXPR gf_u.word [L18] RET, EXPR gf_u.word [L18] (w) = gf_u.word [L18] RET (w) = gf_u.word [L19] COND FALSE !(0) [L21] COND FALSE !(w == 0x00000000 || w == 0x80000000) [L23-L24] COND FALSE !((w >= 0x00800000 && w <= 0x7f7fffff) || (w >= 0x80800000 && w <= 0xff7fffff)) [L26-L27] COND FALSE !((w >= 0x00000001 && w <= 0x007fffff) || (w >= 0x80000001 && w <= 0x807fffff)) [L29] COND FALSE !(w == 0x7f800000 || w == 0xff800000) [L32] RET return 0; [L36] EXPR __fpclassify_float(x) VAL [\old(x)=0, \old(y)=4286578692, __fpclassify_float(x)=0, x=0, y=4286578692] [L36] COND TRUE __fpclassify_float(x) == 0 [L37] RET return y; VAL [\old(x)=0, \old(y)=4286578692, \result=4286578692, x=0, y=4286578692] [L66] EXPR fmin_float(x, y) VAL [fmin_float(x, y)=4286578692, x=0, y=4286578692] [L66] float res = fmin_float(x, y); [L69] EXPR res == -0.0f && __signbit_float(res) == 1 VAL [res=4286578692, res == -0.0f && __signbit_float(res) == 1=0, x=0, y=4286578692] [L69] COND TRUE !(res == -0.0f && __signbit_float(res) == 1) [L70] __VERIFIER_error() VAL [res=4286578692, x=0, y=4286578692] - StatisticsResult: Ultimate Automizer benchmark data CFG has 6 procedures, 44 locations, 1 error locations. UNSAFE Result, 0.8s OverallTime, 4 OverallIterations, 1 TraceHistogramMax, 0.2s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 149 SDtfs, 0 SDslu, 178 SDs, 0 SdLazy, 21 SolverSat, 2 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 10 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=44occurred 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, 3 MinimizatonAttempts, 4 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.2s InterpolantComputationTime, 97 NumberOfCodeBlocks, 97 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 68 ConstructedInterpolants, 0 QuantifiedInterpolants, 1926 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 3 InterpolantComputations, 3 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces Received shutdown request... ### Bit-precise run ### This is Ultimate 0.1.23-1dbac8b [2018-10-26 21:21:08,226 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-10-26 21:21:08,227 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-10-26 21:21:08,237 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-10-26 21:21:08,237 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-10-26 21:21:08,238 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-10-26 21:21:08,239 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-10-26 21:21:08,240 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-10-26 21:21:08,242 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-10-26 21:21:08,243 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-10-26 21:21:08,244 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-10-26 21:21:08,244 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-10-26 21:21:08,245 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-10-26 21:21:08,245 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-10-26 21:21:08,247 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-10-26 21:21:08,248 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-10-26 21:21:08,248 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-10-26 21:21:08,250 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-10-26 21:21:08,252 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-10-26 21:21:08,253 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-10-26 21:21:08,254 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-10-26 21:21:08,255 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-10-26 21:21:08,257 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-10-26 21:21:08,257 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-10-26 21:21:08,258 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-10-26 21:21:08,259 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-10-26 21:21:08,260 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-10-26 21:21:08,260 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-10-26 21:21:08,261 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-10-26 21:21:08,263 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-10-26 21:21:08,267 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-10-26 21:21:08,268 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-10-26 21:21:08,268 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-10-26 21:21:08,268 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-10-26 21:21:08,269 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-10-26 21:21:08,270 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-10-26 21:21:08,270 INFO L98 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/working_dir_b8563d0f-af22-4bd8-8984-de1aa1a7c271/bin-2019/utaipan/config/svcomp-Reach-32bit-Taipan_Bitvector.epf [2018-10-26 21:21:08,287 INFO L110 SettingsManager]: Loading preferences was successful [2018-10-26 21:21:08,287 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-10-26 21:21:08,288 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-10-26 21:21:08,288 INFO L133 SettingsManager]: * User list type=DISABLED [2018-10-26 21:21:08,288 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-10-26 21:21:08,288 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-10-26 21:21:08,288 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-10-26 21:21:08,289 INFO L133 SettingsManager]: * Interval Domain=false [2018-10-26 21:21:08,289 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-10-26 21:21:08,289 INFO L133 SettingsManager]: * sizeof long=4 [2018-10-26 21:21:08,289 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-10-26 21:21:08,290 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-10-26 21:21:08,291 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-10-26 21:21:08,291 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-10-26 21:21:08,291 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-10-26 21:21:08,291 INFO L133 SettingsManager]: * Use bitvectors instead of ints=true [2018-10-26 21:21:08,291 INFO L133 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2018-10-26 21:21:08,291 INFO L133 SettingsManager]: * sizeof long double=12 [2018-10-26 21:21:08,291 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-10-26 21:21:08,292 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-10-26 21:21:08,292 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-10-26 21:21:08,292 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-10-26 21:21:08,292 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-10-26 21:21:08,292 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-10-26 21:21:08,292 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-26 21:21:08,292 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-10-26 21:21:08,293 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-10-26 21:21:08,293 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-10-26 21:21:08,293 INFO L133 SettingsManager]: * Trace refinement strategy=WALRUS [2018-10-26 21:21:08,293 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-10-26 21:21:08,293 INFO L133 SettingsManager]: * Command for external solver=cvc4nyu --tear-down-incremental --rewrite-divk --print-success --lang smt [2018-10-26 21:21:08,293 INFO L133 SettingsManager]: * Logic for external solver=AUFBV [2018-10-26 21:21:08,293 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true 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_b8563d0f-af22-4bd8-8984-de1aa1a7c271/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 -> cd0c8f7b91fa815011541d5ffb41102d34132ba8 [2018-10-26 21:21:08,334 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-10-26 21:21:08,347 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-10-26 21:21:08,350 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-10-26 21:21:08,351 INFO L271 PluginConnector]: Initializing CDTParser... [2018-10-26 21:21:08,352 INFO L276 PluginConnector]: CDTParser initialized [2018-10-26 21:21:08,352 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/working_dir_b8563d0f-af22-4bd8-8984-de1aa1a7c271/bin-2019/utaipan/../../sv-benchmarks/c/float-newlib/float_req_bl_1232a_true-unreach-call.c [2018-10-26 21:21:08,400 INFO L218 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_b8563d0f-af22-4bd8-8984-de1aa1a7c271/bin-2019/utaipan/data/b476a1771/822525ed57d24a35810d1fa036c4fc8c/FLAG05c197fa7 [2018-10-26 21:21:08,784 INFO L298 CDTParser]: Found 1 translation units. [2018-10-26 21:21:08,784 INFO L158 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/working_dir_b8563d0f-af22-4bd8-8984-de1aa1a7c271/sv-benchmarks/c/float-newlib/float_req_bl_1232a_true-unreach-call.c [2018-10-26 21:21:08,791 INFO L346 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_b8563d0f-af22-4bd8-8984-de1aa1a7c271/bin-2019/utaipan/data/b476a1771/822525ed57d24a35810d1fa036c4fc8c/FLAG05c197fa7 [2018-10-26 21:21:08,800 INFO L354 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/working_dir_b8563d0f-af22-4bd8-8984-de1aa1a7c271/bin-2019/utaipan/data/b476a1771/822525ed57d24a35810d1fa036c4fc8c [2018-10-26 21:21:08,804 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-10-26 21:21:08,806 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2018-10-26 21:21:08,806 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-10-26 21:21:08,807 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-10-26 21:21:08,810 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-10-26 21:21:08,811 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.10 09:21:08" (1/1) ... [2018-10-26 21:21:08,813 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7404913a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 09:21:08, skipping insertion in model container [2018-10-26 21:21:08,813 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.10 09:21:08" (1/1) ... [2018-10-26 21:21:08,819 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-10-26 21:21:08,839 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-10-26 21:21:09,023 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-26 21:21:09,028 INFO L189 MainTranslator]: Completed pre-run [2018-10-26 21:21:09,053 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-26 21:21:09,080 INFO L193 MainTranslator]: Completed translation [2018-10-26 21:21:09,080 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 09:21:09 WrapperNode [2018-10-26 21:21:09,080 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-10-26 21:21:09,081 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-10-26 21:21:09,081 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-10-26 21:21:09,081 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-10-26 21:21:09,089 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 09:21:09" (1/1) ... [2018-10-26 21:21:09,100 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 09:21:09" (1/1) ... [2018-10-26 21:21:09,121 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-10-26 21:21:09,124 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-10-26 21:21:09,124 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-10-26 21:21:09,124 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-10-26 21:21:09,133 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 09:21:09" (1/1) ... [2018-10-26 21:21:09,133 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 09:21:09" (1/1) ... [2018-10-26 21:21:09,137 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 09:21:09" (1/1) ... [2018-10-26 21:21:09,139 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 09:21:09" (1/1) ... [2018-10-26 21:21:09,151 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 09:21:09" (1/1) ... [2018-10-26 21:21:09,161 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 09:21:09" (1/1) ... [2018-10-26 21:21:09,163 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 09:21:09" (1/1) ... [2018-10-26 21:21:09,166 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-10-26 21:21:09,167 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-10-26 21:21:09,167 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-10-26 21:21:09,167 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-10-26 21:21:09,168 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 09:21:09" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_b8563d0f-af22-4bd8-8984-de1aa1a7c271/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 [2018-10-26 21:21:09,271 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-10-26 21:21:09,271 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-10-26 21:21:09,271 INFO L130 BoogieDeclarations]: Found specification of procedure __fpclassify_float [2018-10-26 21:21:09,271 INFO L138 BoogieDeclarations]: Found implementation of procedure __fpclassify_float [2018-10-26 21:21:09,271 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-10-26 21:21:09,271 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-10-26 21:21:09,272 INFO L130 BoogieDeclarations]: Found specification of procedure fmin_float [2018-10-26 21:21:09,272 INFO L138 BoogieDeclarations]: Found implementation of procedure fmin_float [2018-10-26 21:21:09,272 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-10-26 21:21:09,272 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-10-26 21:21:09,272 INFO L130 BoogieDeclarations]: Found specification of procedure __signbit_float [2018-10-26 21:21:09,272 INFO L138 BoogieDeclarations]: Found implementation of procedure __signbit_float [2018-10-26 21:21:09,675 WARN L317 ript$VariableManager]: TermVariabe |qquantified_#valueAsBitvector| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-10-26 21:21:09,784 WARN L317 ript$VariableManager]: TermVariabe |qquantified_#valueAsBitvector| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-10-26 21:21:09,789 INFO L341 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-10-26 21:21:09,789 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.10 09:21:09 BoogieIcfgContainer [2018-10-26 21:21:09,789 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-10-26 21:21:09,790 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-10-26 21:21:09,790 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-10-26 21:21:09,793 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-10-26 21:21:09,793 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 26.10 09:21:08" (1/3) ... [2018-10-26 21:21:09,794 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@73db3040 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.10 09:21:09, skipping insertion in model container [2018-10-26 21:21:09,794 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 09:21:09" (2/3) ... [2018-10-26 21:21:09,795 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@73db3040 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.10 09:21:09, skipping insertion in model container [2018-10-26 21:21:09,795 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.10 09:21:09" (3/3) ... [2018-10-26 21:21:09,796 INFO L112 eAbstractionObserver]: Analyzing ICFG float_req_bl_1232a_true-unreach-call.c [2018-10-26 21:21:09,805 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-10-26 21:21:09,812 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-10-26 21:21:09,827 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-10-26 21:21:09,848 INFO L135 ementStrategyFactory]: Using default assertion order modulation [2018-10-26 21:21:09,849 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-10-26 21:21:09,849 INFO L383 AbstractCegarLoop]: Hoare is true [2018-10-26 21:21:09,849 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-10-26 21:21:09,849 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-10-26 21:21:09,849 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-10-26 21:21:09,849 INFO L387 AbstractCegarLoop]: Difference is false [2018-10-26 21:21:09,850 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-10-26 21:21:09,850 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-10-26 21:21:09,863 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states. [2018-10-26 21:21:09,869 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2018-10-26 21:21:09,869 INFO L367 BasicCegarLoop]: Found error trace [2018-10-26 21:21:09,870 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-26 21:21:09,873 INFO L424 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-26 21:21:09,878 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-26 21:21:09,878 INFO L82 PathProgramCache]: Analyzing trace with hash -2032422118, now seen corresponding path program 1 times [2018-10-26 21:21:09,882 INFO L225 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-10-26 21:21:09,883 INFO L69 tionRefinementEngine]: Using refinement strategy WalrusRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_b8563d0f-af22-4bd8-8984-de1aa1a7c271/bin-2019/utaipan/mathsat Starting monitored process 2 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2018-10-26 21:21:09,894 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY Waiting until toolchain timeout for monitored process 2 with mathsat -unsat_core_generation=3 [2018-10-26 21:21:09,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-26 21:21:09,953 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-26 21:21:09,968 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-26 21:21:09,968 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-10-26 21:21:09,983 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-26 21:21:09,983 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-10-26 21:21:09,987 INFO L460 AbstractCegarLoop]: Interpolant automaton has 2 states [2018-10-26 21:21:09,998 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2018-10-26 21:21:09,999 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-10-26 21:21:10,000 INFO L87 Difference]: Start difference. First operand 42 states. Second operand 2 states. [2018-10-26 21:21:10,023 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-26 21:21:10,023 INFO L93 Difference]: Finished difference Result 75 states and 103 transitions. [2018-10-26 21:21:10,023 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2018-10-26 21:21:10,024 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 21 [2018-10-26 21:21:10,025 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-26 21:21:10,035 INFO L225 Difference]: With dead ends: 75 [2018-10-26 21:21:10,035 INFO L226 Difference]: Without dead ends: 38 [2018-10-26 21:21:10,038 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-10-26 21:21:10,053 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states. [2018-10-26 21:21:10,071 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 38. [2018-10-26 21:21:10,073 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38 states. [2018-10-26 21:21:10,074 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 46 transitions. [2018-10-26 21:21:10,076 INFO L78 Accepts]: Start accepts. Automaton has 38 states and 46 transitions. Word has length 21 [2018-10-26 21:21:10,076 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-26 21:21:10,076 INFO L481 AbstractCegarLoop]: Abstraction has 38 states and 46 transitions. [2018-10-26 21:21:10,076 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2018-10-26 21:21:10,076 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 46 transitions. [2018-10-26 21:21:10,078 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2018-10-26 21:21:10,079 INFO L367 BasicCegarLoop]: Found error trace [2018-10-26 21:21:10,079 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-26 21:21:10,079 INFO L424 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-26 21:21:10,079 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-26 21:21:10,079 INFO L82 PathProgramCache]: Analyzing trace with hash 1463339840, now seen corresponding path program 1 times [2018-10-26 21:21:10,080 INFO L225 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-10-26 21:21:10,080 INFO L69 tionRefinementEngine]: Using refinement strategy WalrusRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_b8563d0f-af22-4bd8-8984-de1aa1a7c271/bin-2019/utaipan/mathsat Starting monitored process 3 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2018-10-26 21:21:10,086 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY Waiting until toolchain timeout for monitored process 3 with mathsat -unsat_core_generation=3 [2018-10-26 21:21:10,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-26 21:21:10,140 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-26 21:21:10,178 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-26 21:21:10,178 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-10-26 21:21:10,189 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-26 21:21:10,189 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-26 21:21:10,191 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-26 21:21:10,191 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-26 21:21:10,191 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-10-26 21:21:10,191 INFO L87 Difference]: Start difference. First operand 38 states and 46 transitions. Second operand 4 states. [2018-10-26 21:21:10,303 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-26 21:21:10,303 INFO L93 Difference]: Finished difference Result 56 states and 66 transitions. [2018-10-26 21:21:10,304 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-26 21:21:10,304 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 22 [2018-10-26 21:21:10,304 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-26 21:21:10,306 INFO L225 Difference]: With dead ends: 56 [2018-10-26 21:21:10,307 INFO L226 Difference]: Without dead ends: 41 [2018-10-26 21:21:10,307 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-10-26 21:21:10,308 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41 states. [2018-10-26 21:21:10,316 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41 to 41. [2018-10-26 21:21:10,317 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 41 states. [2018-10-26 21:21:10,320 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 50 transitions. [2018-10-26 21:21:10,321 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 50 transitions. Word has length 22 [2018-10-26 21:21:10,321 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-26 21:21:10,321 INFO L481 AbstractCegarLoop]: Abstraction has 41 states and 50 transitions. [2018-10-26 21:21:10,321 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-26 21:21:10,321 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 50 transitions. [2018-10-26 21:21:10,322 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2018-10-26 21:21:10,322 INFO L367 BasicCegarLoop]: Found error trace [2018-10-26 21:21:10,322 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-26 21:21:10,323 INFO L424 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-26 21:21:10,323 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-26 21:21:10,323 INFO L82 PathProgramCache]: Analyzing trace with hash -583274473, now seen corresponding path program 1 times [2018-10-26 21:21:10,323 INFO L225 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-10-26 21:21:10,324 INFO L69 tionRefinementEngine]: Using refinement strategy WalrusRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_b8563d0f-af22-4bd8-8984-de1aa1a7c271/bin-2019/utaipan/mathsat Starting monitored process 4 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2018-10-26 21:21:10,332 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY Waiting until toolchain timeout for monitored process 4 with mathsat -unsat_core_generation=3 [2018-10-26 21:21:10,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-26 21:21:10,387 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-26 21:21:10,744 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-26 21:21:10,745 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-10-26 21:21:10,752 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-26 21:21:10,752 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2018-10-26 21:21:10,752 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2018-10-26 21:21:10,753 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2018-10-26 21:21:10,753 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2018-10-26 21:21:10,753 INFO L87 Difference]: Start difference. First operand 41 states and 50 transitions. Second operand 8 states. [2018-10-26 21:21:11,380 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-26 21:21:11,381 INFO L93 Difference]: Finished difference Result 60 states and 73 transitions. [2018-10-26 21:21:11,382 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-10-26 21:21:11,382 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 23 [2018-10-26 21:21:11,383 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-26 21:21:11,384 INFO L225 Difference]: With dead ends: 60 [2018-10-26 21:21:11,384 INFO L226 Difference]: Without dead ends: 40 [2018-10-26 21:21:11,384 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2018-10-26 21:21:11,385 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40 states. [2018-10-26 21:21:11,391 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40 to 40. [2018-10-26 21:21:11,392 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 40 states. [2018-10-26 21:21:11,393 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 47 transitions. [2018-10-26 21:21:11,395 INFO L78 Accepts]: Start accepts. Automaton has 40 states and 47 transitions. Word has length 23 [2018-10-26 21:21:11,395 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-26 21:21:11,396 INFO L481 AbstractCegarLoop]: Abstraction has 40 states and 47 transitions. [2018-10-26 21:21:11,396 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2018-10-26 21:21:11,396 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 47 transitions. [2018-10-26 21:21:11,397 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2018-10-26 21:21:11,397 INFO L367 BasicCegarLoop]: Found error trace [2018-10-26 21:21:11,397 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-26 21:21:11,397 INFO L424 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-26 21:21:11,397 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-26 21:21:11,398 INFO L82 PathProgramCache]: Analyzing trace with hash -1063309775, now seen corresponding path program 1 times [2018-10-26 21:21:11,398 INFO L225 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-10-26 21:21:11,398 INFO L69 tionRefinementEngine]: Using refinement strategy WalrusRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_b8563d0f-af22-4bd8-8984-de1aa1a7c271/bin-2019/utaipan/mathsat Starting monitored process 5 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with mathsat -unsat_core_generation=3 [2018-10-26 21:21:11,413 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-26 21:21:11,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-26 21:21:11,468 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-26 21:21:11,484 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2018-10-26 21:21:11,484 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-10-26 21:21:11,495 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-26 21:21:11,495 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-26 21:21:11,496 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-26 21:21:11,496 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-26 21:21:11,496 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-10-26 21:21:11,496 INFO L87 Difference]: Start difference. First operand 40 states and 47 transitions. Second operand 4 states. [2018-10-26 21:21:11,590 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-26 21:21:11,591 INFO L93 Difference]: Finished difference Result 56 states and 64 transitions. [2018-10-26 21:21:11,591 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-26 21:21:11,591 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 30 [2018-10-26 21:21:11,592 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-26 21:21:11,592 INFO L225 Difference]: With dead ends: 56 [2018-10-26 21:21:11,592 INFO L226 Difference]: Without dead ends: 41 [2018-10-26 21:21:11,593 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-10-26 21:21:11,593 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41 states. [2018-10-26 21:21:11,597 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41 to 41. [2018-10-26 21:21:11,597 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 41 states. [2018-10-26 21:21:11,600 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 48 transitions. [2018-10-26 21:21:11,600 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 48 transitions. Word has length 30 [2018-10-26 21:21:11,601 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-26 21:21:11,601 INFO L481 AbstractCegarLoop]: Abstraction has 41 states and 48 transitions. [2018-10-26 21:21:11,601 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-26 21:21:11,601 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 48 transitions. [2018-10-26 21:21:11,602 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2018-10-26 21:21:11,602 INFO L367 BasicCegarLoop]: Found error trace [2018-10-26 21:21:11,602 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-26 21:21:11,602 INFO L424 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-26 21:21:11,602 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-26 21:21:11,602 INFO L82 PathProgramCache]: Analyzing trace with hash 1223995116, now seen corresponding path program 1 times [2018-10-26 21:21:11,603 INFO L225 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-10-26 21:21:11,603 INFO L69 tionRefinementEngine]: Using refinement strategy WalrusRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_b8563d0f-af22-4bd8-8984-de1aa1a7c271/bin-2019/utaipan/mathsat Starting monitored process 6 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with mathsat -unsat_core_generation=3 [2018-10-26 21:21:11,612 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-26 21:21:11,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-26 21:21:11,674 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-26 21:21:11,935 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2018-10-26 21:21:11,935 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-10-26 21:21:11,950 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-26 21:21:11,951 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2018-10-26 21:21:11,951 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2018-10-26 21:21:11,951 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2018-10-26 21:21:11,951 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2018-10-26 21:21:11,952 INFO L87 Difference]: Start difference. First operand 41 states and 48 transitions. Second operand 8 states. [2018-10-26 21:21:12,382 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-26 21:21:12,382 INFO L93 Difference]: Finished difference Result 58 states and 66 transitions. [2018-10-26 21:21:12,385 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-10-26 21:21:12,385 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 31 [2018-10-26 21:21:12,385 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-26 21:21:12,386 INFO L225 Difference]: With dead ends: 58 [2018-10-26 21:21:12,386 INFO L226 Difference]: Without dead ends: 35 [2018-10-26 21:21:12,386 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2018-10-26 21:21:12,387 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states. [2018-10-26 21:21:12,390 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 35. [2018-10-26 21:21:12,390 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2018-10-26 21:21:12,391 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 37 transitions. [2018-10-26 21:21:12,391 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 37 transitions. Word has length 31 [2018-10-26 21:21:12,392 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-26 21:21:12,392 INFO L481 AbstractCegarLoop]: Abstraction has 35 states and 37 transitions. [2018-10-26 21:21:12,392 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2018-10-26 21:21:12,392 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 37 transitions. [2018-10-26 21:21:12,392 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2018-10-26 21:21:12,393 INFO L367 BasicCegarLoop]: Found error trace [2018-10-26 21:21:12,393 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-26 21:21:12,393 INFO L424 AbstractCegarLoop]: === Iteration 6 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-26 21:21:12,393 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-26 21:21:12,393 INFO L82 PathProgramCache]: Analyzing trace with hash 410180372, now seen corresponding path program 1 times [2018-10-26 21:21:12,394 INFO L225 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-10-26 21:21:12,394 INFO L69 tionRefinementEngine]: Using refinement strategy WalrusRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_b8563d0f-af22-4bd8-8984-de1aa1a7c271/bin-2019/utaipan/mathsat Starting monitored process 7 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with mathsat -unsat_core_generation=3 [2018-10-26 21:21:12,398 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-26 21:21:12,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-26 21:21:12,454 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-26 21:21:12,531 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2018-10-26 21:21:12,532 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-10-26 21:21:12,539 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-26 21:21:12,539 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2018-10-26 21:21:12,540 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2018-10-26 21:21:12,540 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2018-10-26 21:21:12,540 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2018-10-26 21:21:12,540 INFO L87 Difference]: Start difference. First operand 35 states and 37 transitions. Second operand 8 states. [2018-10-26 21:21:12,801 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-26 21:21:12,801 INFO L93 Difference]: Finished difference Result 43 states and 45 transitions. [2018-10-26 21:21:12,801 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-10-26 21:21:12,802 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 32 [2018-10-26 21:21:12,802 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-26 21:21:12,802 INFO L225 Difference]: With dead ends: 43 [2018-10-26 21:21:12,803 INFO L226 Difference]: Without dead ends: 40 [2018-10-26 21:21:12,803 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2018-10-26 21:21:12,803 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40 states. [2018-10-26 21:21:12,807 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40 to 40. [2018-10-26 21:21:12,808 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 40 states. [2018-10-26 21:21:12,809 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 42 transitions. [2018-10-26 21:21:12,810 INFO L78 Accepts]: Start accepts. Automaton has 40 states and 42 transitions. Word has length 32 [2018-10-26 21:21:12,810 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-26 21:21:12,810 INFO L481 AbstractCegarLoop]: Abstraction has 40 states and 42 transitions. [2018-10-26 21:21:12,810 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2018-10-26 21:21:12,810 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 42 transitions. [2018-10-26 21:21:12,811 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2018-10-26 21:21:12,811 INFO L367 BasicCegarLoop]: Found error trace [2018-10-26 21:21:12,811 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-26 21:21:12,811 INFO L424 AbstractCegarLoop]: === Iteration 7 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-26 21:21:12,812 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-26 21:21:12,812 INFO L82 PathProgramCache]: Analyzing trace with hash 1219526998, now seen corresponding path program 1 times [2018-10-26 21:21:12,812 INFO L225 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-10-26 21:21:12,812 INFO L69 tionRefinementEngine]: Using refinement strategy WalrusRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_b8563d0f-af22-4bd8-8984-de1aa1a7c271/bin-2019/utaipan/mathsat Starting monitored process 8 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with mathsat -unsat_core_generation=3 [2018-10-26 21:21:12,816 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-26 21:21:12,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-26 21:21:12,876 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-26 21:21:12,937 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2018-10-26 21:21:12,937 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-10-26 21:21:12,949 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-26 21:21:12,949 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-10-26 21:21:12,949 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-10-26 21:21:12,949 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-10-26 21:21:12,949 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-10-26 21:21:12,950 INFO L87 Difference]: Start difference. First operand 40 states and 42 transitions. Second operand 5 states. [2018-10-26 21:21:13,011 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-26 21:21:13,011 INFO L93 Difference]: Finished difference Result 51 states and 52 transitions. [2018-10-26 21:21:13,015 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-10-26 21:21:13,015 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 32 [2018-10-26 21:21:13,015 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-26 21:21:13,016 INFO L225 Difference]: With dead ends: 51 [2018-10-26 21:21:13,016 INFO L226 Difference]: Without dead ends: 35 [2018-10-26 21:21:13,016 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 27 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2018-10-26 21:21:13,016 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states. [2018-10-26 21:21:13,020 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 35. [2018-10-26 21:21:13,020 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2018-10-26 21:21:13,021 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 35 transitions. [2018-10-26 21:21:13,021 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 35 transitions. Word has length 32 [2018-10-26 21:21:13,021 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-26 21:21:13,021 INFO L481 AbstractCegarLoop]: Abstraction has 35 states and 35 transitions. [2018-10-26 21:21:13,021 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-10-26 21:21:13,022 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 35 transitions. [2018-10-26 21:21:13,023 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2018-10-26 21:21:13,023 INFO L367 BasicCegarLoop]: Found error trace [2018-10-26 21:21:13,024 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-26 21:21:13,024 INFO L424 AbstractCegarLoop]: === Iteration 8 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-26 21:21:13,024 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-26 21:21:13,024 INFO L82 PathProgramCache]: Analyzing trace with hash 1465986518, now seen corresponding path program 1 times [2018-10-26 21:21:13,025 INFO L225 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-10-26 21:21:13,025 INFO L69 tionRefinementEngine]: Using refinement strategy WalrusRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_b8563d0f-af22-4bd8-8984-de1aa1a7c271/bin-2019/utaipan/mathsat Starting monitored process 9 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 9 with mathsat -unsat_core_generation=3 [2018-10-26 21:21:13,031 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-26 21:21:13,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-26 21:21:13,103 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-26 21:21:13,330 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2018-10-26 21:21:13,330 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-10-26 21:21:13,350 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-26 21:21:13,350 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2018-10-26 21:21:13,351 INFO L460 AbstractCegarLoop]: Interpolant automaton has 13 states [2018-10-26 21:21:13,351 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2018-10-26 21:21:13,351 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=133, Unknown=0, NotChecked=0, Total=156 [2018-10-26 21:21:13,351 INFO L87 Difference]: Start difference. First operand 35 states and 35 transitions. Second operand 13 states. [2018-10-26 21:21:13,765 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-26 21:21:13,765 INFO L93 Difference]: Finished difference Result 35 states and 35 transitions. [2018-10-26 21:21:13,765 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2018-10-26 21:21:13,765 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 40 [2018-10-26 21:21:13,766 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-26 21:21:13,766 INFO L225 Difference]: With dead ends: 35 [2018-10-26 21:21:13,766 INFO L226 Difference]: Without dead ends: 0 [2018-10-26 21:21:13,766 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=57, Invalid=323, Unknown=0, NotChecked=0, Total=380 [2018-10-26 21:21:13,767 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2018-10-26 21:21:13,767 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2018-10-26 21:21:13,767 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2018-10-26 21:21:13,767 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2018-10-26 21:21:13,767 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 40 [2018-10-26 21:21:13,767 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-26 21:21:13,768 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2018-10-26 21:21:13,768 INFO L482 AbstractCegarLoop]: Interpolant automaton has 13 states. [2018-10-26 21:21:13,768 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2018-10-26 21:21:13,768 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2018-10-26 21:21:13,771 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2018-10-26 21:21:13,920 INFO L425 ceAbstractionStarter]: For program point ULTIMATE.initFINAL(line -1) no Hoare annotation was computed. [2018-10-26 21:21:13,920 INFO L428 ceAbstractionStarter]: At program point ULTIMATE.initENTRY(line -1) the Hoare annotation is: true [2018-10-26 21:21:13,920 INFO L425 ceAbstractionStarter]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2018-10-26 21:21:13,920 INFO L428 ceAbstractionStarter]: At program point fmin_floatENTRY(lines 35 42) the Hoare annotation is: true [2018-10-26 21:21:13,920 INFO L425 ceAbstractionStarter]: For program point fmin_floatEXIT(lines 35 42) no Hoare annotation was computed. [2018-10-26 21:21:13,920 INFO L425 ceAbstractionStarter]: For program point fmin_floatFINAL(lines 35 42) no Hoare annotation was computed. [2018-10-26 21:21:13,920 INFO L425 ceAbstractionStarter]: For program point L41(line 41) no Hoare annotation was computed. [2018-10-26 21:21:13,921 INFO L425 ceAbstractionStarter]: For program point L41-2(line 41) no Hoare annotation was computed. [2018-10-26 21:21:13,921 INFO L421 ceAbstractionStarter]: At program point L38(line 38) the Hoare annotation is: (let ((.cse0 (= fmin_float_~x |fmin_float_#in~x|))) (or (and .cse0 (exists ((__fpclassify_float_~w~0 (_ BitVec 32))) (and (= (fp ((_ extract 31 31) __fpclassify_float_~w~0) ((_ extract 30 23) __fpclassify_float_~w~0) ((_ extract 22 0) __fpclassify_float_~w~0)) |fmin_float_#in~x|) (not (= __fpclassify_float_~w~0 (_ bv0 32)))))) (and .cse0 (= fmin_float_~y |fmin_float_#in~y|)))) [2018-10-26 21:21:13,921 INFO L425 ceAbstractionStarter]: For program point L38-1(lines 38 39) no Hoare annotation was computed. [2018-10-26 21:21:13,921 INFO L421 ceAbstractionStarter]: At program point L36(line 36) the Hoare annotation is: (and (= fmin_float_~x |fmin_float_#in~x|) (= fmin_float_~y |fmin_float_#in~y|)) [2018-10-26 21:21:13,921 INFO L425 ceAbstractionStarter]: For program point L36-1(lines 36 37) no Hoare annotation was computed. [2018-10-26 21:21:13,921 INFO L425 ceAbstractionStarter]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2018-10-26 21:21:13,921 INFO L428 ceAbstractionStarter]: At program point L-1(line -1) the Hoare annotation is: true [2018-10-26 21:21:13,921 INFO L428 ceAbstractionStarter]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2018-10-26 21:21:13,921 INFO L425 ceAbstractionStarter]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2018-10-26 21:21:13,922 INFO L425 ceAbstractionStarter]: For program point L66-1(line 66) no Hoare annotation was computed. [2018-10-26 21:21:13,922 INFO L425 ceAbstractionStarter]: For program point L69-4(lines 69 72) no Hoare annotation was computed. [2018-10-26 21:21:13,922 INFO L428 ceAbstractionStarter]: At program point mainENTRY(lines 56 75) the Hoare annotation is: true [2018-10-26 21:21:13,922 INFO L425 ceAbstractionStarter]: For program point mainEXIT(lines 56 75) no Hoare annotation was computed. [2018-10-26 21:21:13,922 INFO L425 ceAbstractionStarter]: For program point mainFINAL(lines 56 75) no Hoare annotation was computed. [2018-10-26 21:21:13,922 INFO L425 ceAbstractionStarter]: For program point mainErr0ASSERT_VIOLATIONERROR_FUNCTION(line 70) no Hoare annotation was computed. [2018-10-26 21:21:13,922 INFO L425 ceAbstractionStarter]: For program point L70(line 70) no Hoare annotation was computed. [2018-10-26 21:21:13,922 INFO L425 ceAbstractionStarter]: For program point L69(line 69) no Hoare annotation was computed. [2018-10-26 21:21:13,922 INFO L421 ceAbstractionStarter]: At program point L69-1(line 69) the Hoare annotation is: (let ((.cse0 (fp.neg (_ +zero 8 24)))) (and (= (_ +zero 8 24) main_~x~0) (= main_~res~0 .cse0) |main_#t~short9| (= main_~y~0 .cse0))) [2018-10-26 21:21:13,923 INFO L425 ceAbstractionStarter]: For program point L69-2(line 69) no Hoare annotation was computed. [2018-10-26 21:21:13,923 INFO L421 ceAbstractionStarter]: At program point L66(line 66) the Hoare annotation is: (and (= (_ +zero 8 24) main_~x~0) (= main_~y~0 (fp.neg (_ +zero 8 24)))) [2018-10-26 21:21:13,923 INFO L425 ceAbstractionStarter]: For program point L29(lines 29 32) no Hoare annotation was computed. [2018-10-26 21:21:13,923 INFO L425 ceAbstractionStarter]: For program point __fpclassify_floatFINAL(lines 12 33) no Hoare annotation was computed. [2018-10-26 21:21:13,923 INFO L425 ceAbstractionStarter]: For program point L23(lines 23 32) no Hoare annotation was computed. [2018-10-26 21:21:13,923 INFO L425 ceAbstractionStarter]: For program point L15-1(lines 15 19) no Hoare annotation was computed. [2018-10-26 21:21:13,923 INFO L421 ceAbstractionStarter]: At program point L15-3(lines 15 19) the Hoare annotation is: (= __fpclassify_float_~x |__fpclassify_float_#in~x|) [2018-10-26 21:21:13,923 INFO L425 ceAbstractionStarter]: For program point L15-4(lines 12 33) no Hoare annotation was computed. [2018-10-26 21:21:13,923 INFO L425 ceAbstractionStarter]: For program point L26(lines 26 32) no Hoare annotation was computed. [2018-10-26 21:21:13,923 INFO L428 ceAbstractionStarter]: At program point __fpclassify_floatENTRY(lines 12 33) the Hoare annotation is: true [2018-10-26 21:21:13,923 INFO L425 ceAbstractionStarter]: For program point __fpclassify_floatEXIT(lines 12 33) no Hoare annotation was computed. [2018-10-26 21:21:13,924 INFO L425 ceAbstractionStarter]: For program point __signbit_floatFINAL(lines 44 54) no Hoare annotation was computed. [2018-10-26 21:21:13,924 INFO L428 ceAbstractionStarter]: At program point __signbit_floatENTRY(lines 44 54) the Hoare annotation is: true [2018-10-26 21:21:13,924 INFO L425 ceAbstractionStarter]: For program point L47-1(lines 47 51) no Hoare annotation was computed. [2018-10-26 21:21:13,924 INFO L421 ceAbstractionStarter]: At program point L47-3(lines 47 51) the Hoare annotation is: (= |__signbit_float_#in~x| __signbit_float_~x) [2018-10-26 21:21:13,924 INFO L425 ceAbstractionStarter]: For program point __signbit_floatEXIT(lines 44 54) no Hoare annotation was computed. [2018-10-26 21:21:13,924 INFO L425 ceAbstractionStarter]: For program point L47-4(lines 47 51) no Hoare annotation was computed. [2018-10-26 21:21:13,934 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 26.10 09:21:13 BoogieIcfgContainer [2018-10-26 21:21:13,934 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-10-26 21:21:13,935 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2018-10-26 21:21:13,935 INFO L271 PluginConnector]: Initializing Witness Printer... [2018-10-26 21:21:13,935 INFO L276 PluginConnector]: Witness Printer initialized [2018-10-26 21:21:13,935 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.10 09:21:09" (3/4) ... [2018-10-26 21:21:13,939 INFO L144 WitnessPrinter]: Generating witness for correct program [2018-10-26 21:21:13,944 INFO L333 RCFGBacktranslator]: Ignoring RootEdge to procedure ULTIMATE.init [2018-10-26 21:21:13,944 INFO L333 RCFGBacktranslator]: Ignoring RootEdge to procedure fmin_float [2018-10-26 21:21:13,945 INFO L333 RCFGBacktranslator]: Ignoring RootEdge to procedure main [2018-10-26 21:21:13,945 INFO L333 RCFGBacktranslator]: Ignoring RootEdge to procedure __fpclassify_float [2018-10-26 21:21:13,945 INFO L333 RCFGBacktranslator]: Ignoring RootEdge to procedure __signbit_float [2018-10-26 21:21:13,949 INFO L846 BoogieBacktranslator]: Reduced CFG by removing 42 nodes and edges [2018-10-26 21:21:13,950 INFO L846 BoogieBacktranslator]: Reduced CFG by removing 20 nodes and edges [2018-10-26 21:21:13,950 INFO L846 BoogieBacktranslator]: Reduced CFG by removing 5 nodes and edges [2018-10-26 21:21:13,970 WARN L220 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: x == \old(x) [2018-10-26 21:21:13,970 WARN L220 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: \old(x) == x [2018-10-26 21:21:13,998 INFO L145 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/working_dir_b8563d0f-af22-4bd8-8984-de1aa1a7c271/bin-2019/utaipan/witness.graphml [2018-10-26 21:21:13,998 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2018-10-26 21:21:13,999 INFO L168 Benchmark]: Toolchain (without parser) took 5194.32 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 173.0 MB). Free memory was 953.2 MB in the beginning and 869.1 MB in the end (delta: 84.1 MB). Peak memory consumption was 257.1 MB. Max. memory is 11.5 GB. [2018-10-26 21:21:14,000 INFO L168 Benchmark]: CDTParser took 0.22 ms. Allocated memory is still 1.0 GB. Free memory is still 978.7 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-10-26 21:21:14,001 INFO L168 Benchmark]: CACSL2BoogieTranslator took 274.08 ms. Allocated memory is still 1.0 GB. Free memory was 953.2 MB in the beginning and 937.1 MB in the end (delta: 16.1 MB). Peak memory consumption was 16.1 MB. Max. memory is 11.5 GB. [2018-10-26 21:21:14,001 INFO L168 Benchmark]: Boogie Procedure Inliner took 42.99 ms. Allocated memory is still 1.0 GB. Free memory is still 937.1 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-10-26 21:21:14,001 INFO L168 Benchmark]: Boogie Preprocessor took 41.56 ms. Allocated memory is still 1.0 GB. Free memory is still 937.1 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-10-26 21:21:14,002 INFO L168 Benchmark]: RCFGBuilder took 622.76 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 173.0 MB). Free memory was 937.1 MB in the beginning and 1.1 GB in the end (delta: -200.2 MB). Peak memory consumption was 28.3 MB. Max. memory is 11.5 GB. [2018-10-26 21:21:14,004 INFO L168 Benchmark]: TraceAbstraction took 4144.34 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 875.6 MB in the end (delta: 261.7 MB). Peak memory consumption was 261.7 MB. Max. memory is 11.5 GB. [2018-10-26 21:21:14,005 INFO L168 Benchmark]: Witness Printer took 63.72 ms. Allocated memory is still 1.2 GB. Free memory was 875.6 MB in the beginning and 869.1 MB in the end (delta: 6.5 MB). Peak memory consumption was 6.5 MB. Max. memory is 11.5 GB. [2018-10-26 21:21:14,007 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.22 ms. Allocated memory is still 1.0 GB. Free memory is still 978.7 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 274.08 ms. Allocated memory is still 1.0 GB. Free memory was 953.2 MB in the beginning and 937.1 MB in the end (delta: 16.1 MB). Peak memory consumption was 16.1 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 42.99 ms. Allocated memory is still 1.0 GB. Free memory is still 937.1 MB. There was no memory consumed. Max. memory is 11.5 GB. * Boogie Preprocessor took 41.56 ms. Allocated memory is still 1.0 GB. Free memory is still 937.1 MB. There was no memory consumed. Max. memory is 11.5 GB. * RCFGBuilder took 622.76 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 173.0 MB). Free memory was 937.1 MB in the beginning and 1.1 GB in the end (delta: -200.2 MB). Peak memory consumption was 28.3 MB. Max. memory is 11.5 GB. * TraceAbstraction took 4144.34 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 875.6 MB in the end (delta: 261.7 MB). Peak memory consumption was 261.7 MB. Max. memory is 11.5 GB. * Witness Printer took 63.72 ms. Allocated memory is still 1.2 GB. Free memory was 875.6 MB in the beginning and 869.1 MB in the end (delta: 6.5 MB). Peak memory consumption was 6.5 MB. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 70]: 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: 15]: Loop Invariant Derived loop invariant: x == \old(x) - InvariantResult [Line: 47]: Loop Invariant Derived loop invariant: \old(x) == x - StatisticsResult: Ultimate Automizer benchmark data CFG has 6 procedures, 42 locations, 1 error locations. SAFE Result, 4.0s OverallTime, 8 OverallIterations, 2 TraceHistogramMax, 2.0s AutomataDifference, 0.0s DeadEndRemovalTime, 0.1s HoareAnnotationTime, HoareTripleCheckerStatistics: 298 SDtfs, 124 SDslu, 980 SDs, 0 SdLazy, 375 SolverSat, 16 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 1.2s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 242 GetRequests, 187 SyntacticMatches, 1 SemanticMatches, 54 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 29 ImplicationChecksByTransitivity, 1.5s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=42occurred 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, 8 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 13 LocationsWithAnnotation, 31 PreInvPairs, 38 NumberOfFragments, 68 HoareAnnotationTreeSize, 31 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 13 FomulaSimplificationsInter, 0 FormulaSimplificationTreeSizeReductionInter, 0.1s HoareSimplificationTimeInter, RefinementEngineStatistics: TraceCheckStatistics: 0.1s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 1.0s InterpolantComputationTime, 231 NumberOfCodeBlocks, 231 NumberOfCodeBlocksAsserted, 8 NumberOfCheckSat, 223 ConstructedInterpolants, 14 QuantifiedInterpolants, 20350 SizeOfPredicates, 29 NumberOfNonLiveVariables, 833 ConjunctsInSsa, 58 ConjunctsInUnsatCore, 8 InterpolantComputations, 8 PerfectInterpolantSequences, 30/30 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...