./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/float-newlib/float_req_bl_1032a_true-unreach-call.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 635dfa2a Calling Ultimate with: java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/working_dir_c5165ebc-aa00-4260-9094-ed42efb0915e/bin-2019/utaipan/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/working_dir_c5165ebc-aa00-4260-9094-ed42efb0915e/bin-2019/utaipan/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/working_dir_c5165ebc-aa00-4260-9094-ed42efb0915e/bin-2019/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/working_dir_c5165ebc-aa00-4260-9094-ed42efb0915e/bin-2019/utaipan/config/TaipanReach.xml -i ../../sv-benchmarks/c/float-newlib/float_req_bl_1032a_true-unreach-call.c -s /tmp/vcloud-vcloud-master/worker/working_dir_c5165ebc-aa00-4260-9094-ed42efb0915e/bin-2019/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/working_dir_c5165ebc-aa00-4260-9094-ed42efb0915e/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 9a3696439220bbea1d6ed5ed3b22aa10206af5de .......................................................................................................................................................................................................................................................................................................... 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_c5165ebc-aa00-4260-9094-ed42efb0915e/bin-2019/utaipan/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/working_dir_c5165ebc-aa00-4260-9094-ed42efb0915e/bin-2019/utaipan/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/working_dir_c5165ebc-aa00-4260-9094-ed42efb0915e/bin-2019/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/working_dir_c5165ebc-aa00-4260-9094-ed42efb0915e/bin-2019/utaipan/config/TaipanReach.xml -i ../../sv-benchmarks/c/float-newlib/float_req_bl_1032a_true-unreach-call.c -s /tmp/vcloud-vcloud-master/worker/working_dir_c5165ebc-aa00-4260-9094-ed42efb0915e/bin-2019/utaipan/config/svcomp-Reach-32bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/working_dir_c5165ebc-aa00-4260-9094-ed42efb0915e/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 9a3696439220bbea1d6ed5ed3b22aa10206af5de ................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.1.23-635dfa2 [2018-12-03 03:07:33,662 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-12-03 03:07:33,664 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-12-03 03:07:33,672 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-12-03 03:07:33,672 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-12-03 03:07:33,673 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-12-03 03:07:33,674 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-12-03 03:07:33,675 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-12-03 03:07:33,676 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-12-03 03:07:33,677 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-12-03 03:07:33,678 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-12-03 03:07:33,678 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-12-03 03:07:33,678 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-12-03 03:07:33,679 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-12-03 03:07:33,680 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-12-03 03:07:33,680 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-12-03 03:07:33,681 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-12-03 03:07:33,682 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-12-03 03:07:33,684 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-12-03 03:07:33,685 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-12-03 03:07:33,685 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-12-03 03:07:33,686 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-12-03 03:07:33,688 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-12-03 03:07:33,688 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-12-03 03:07:33,688 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-12-03 03:07:33,689 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-12-03 03:07:33,690 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-12-03 03:07:33,690 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-12-03 03:07:33,691 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-12-03 03:07:33,692 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-12-03 03:07:33,692 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-12-03 03:07:33,692 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-12-03 03:07:33,692 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-12-03 03:07:33,692 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-12-03 03:07:33,693 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-12-03 03:07:33,694 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-12-03 03:07:33,694 INFO L98 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/working_dir_c5165ebc-aa00-4260-9094-ed42efb0915e/bin-2019/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf [2018-12-03 03:07:33,704 INFO L110 SettingsManager]: Loading preferences was successful [2018-12-03 03:07:33,704 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-12-03 03:07:33,705 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-12-03 03:07:33,705 INFO L133 SettingsManager]: * ... calls to implemented procedures=ONLY_FOR_CONCURRENT_PROGRAMS [2018-12-03 03:07:33,705 INFO L133 SettingsManager]: * User list type=DISABLED [2018-12-03 03:07:33,705 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-12-03 03:07:33,705 INFO L133 SettingsManager]: * Explicit value domain=true [2018-12-03 03:07:33,706 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-12-03 03:07:33,706 INFO L133 SettingsManager]: * Octagon Domain=false [2018-12-03 03:07:33,706 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-12-03 03:07:33,706 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-12-03 03:07:33,706 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-12-03 03:07:33,706 INFO L133 SettingsManager]: * Interval Domain=false [2018-12-03 03:07:33,707 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-12-03 03:07:33,707 INFO L133 SettingsManager]: * sizeof long=4 [2018-12-03 03:07:33,707 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-12-03 03:07:33,707 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-12-03 03:07:33,707 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-12-03 03:07:33,707 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-12-03 03:07:33,707 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-12-03 03:07:33,708 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-12-03 03:07:33,708 INFO L133 SettingsManager]: * sizeof long double=12 [2018-12-03 03:07:33,708 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-12-03 03:07:33,708 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-12-03 03:07:33,708 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-12-03 03:07:33,708 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-12-03 03:07:33,708 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-12-03 03:07:33,708 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-12-03 03:07:33,708 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-12-03 03:07:33,708 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-12-03 03:07:33,709 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-12-03 03:07:33,709 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-12-03 03:07:33,709 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-12-03 03:07:33,709 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-12-03 03:07:33,709 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-12-03 03:07:33,709 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-12-03 03:07:33,709 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_c5165ebc-aa00-4260-9094-ed42efb0915e/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 -> 9a3696439220bbea1d6ed5ed3b22aa10206af5de [2018-12-03 03:07:33,730 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-12-03 03:07:33,737 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-12-03 03:07:33,739 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-12-03 03:07:33,740 INFO L271 PluginConnector]: Initializing CDTParser... [2018-12-03 03:07:33,740 INFO L276 PluginConnector]: CDTParser initialized [2018-12-03 03:07:33,740 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/working_dir_c5165ebc-aa00-4260-9094-ed42efb0915e/bin-2019/utaipan/../../sv-benchmarks/c/float-newlib/float_req_bl_1032a_true-unreach-call.c [2018-12-03 03:07:33,777 INFO L221 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_c5165ebc-aa00-4260-9094-ed42efb0915e/bin-2019/utaipan/data/015d6c60b/cb238423a5f14ea79ca16497aab7bb7e/FLAG94ae80821 [2018-12-03 03:07:34,171 INFO L307 CDTParser]: Found 1 translation units. [2018-12-03 03:07:34,171 INFO L161 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/working_dir_c5165ebc-aa00-4260-9094-ed42efb0915e/sv-benchmarks/c/float-newlib/float_req_bl_1032a_true-unreach-call.c [2018-12-03 03:07:34,175 INFO L355 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_c5165ebc-aa00-4260-9094-ed42efb0915e/bin-2019/utaipan/data/015d6c60b/cb238423a5f14ea79ca16497aab7bb7e/FLAG94ae80821 [2018-12-03 03:07:34,183 INFO L363 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/working_dir_c5165ebc-aa00-4260-9094-ed42efb0915e/bin-2019/utaipan/data/015d6c60b/cb238423a5f14ea79ca16497aab7bb7e [2018-12-03 03:07:34,185 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-12-03 03:07:34,186 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2018-12-03 03:07:34,186 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-12-03 03:07:34,186 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-12-03 03:07:34,188 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-12-03 03:07:34,188 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.12 03:07:34" (1/1) ... [2018-12-03 03:07:34,190 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@70b0ea2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.12 03:07:34, skipping insertion in model container [2018-12-03 03:07:34,190 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.12 03:07:34" (1/1) ... [2018-12-03 03:07:34,194 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-12-03 03:07:34,204 INFO L176 MainTranslator]: Built tables and reachable declarations [2018-12-03 03:07:34,295 INFO L203 PostProcessor]: Analyzing one entry point: main [2018-12-03 03:07:34,297 INFO L191 MainTranslator]: Completed pre-run [2018-12-03 03:07:34,311 INFO L203 PostProcessor]: Analyzing one entry point: main [2018-12-03 03:07:34,323 INFO L195 MainTranslator]: Completed translation [2018-12-03 03:07:34,323 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.12 03:07:34 WrapperNode [2018-12-03 03:07:34,323 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-12-03 03:07:34,324 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-12-03 03:07:34,324 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-12-03 03:07:34,324 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-12-03 03:07:34,329 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.12 03:07:34" (1/1) ... [2018-12-03 03:07:34,334 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.12 03:07:34" (1/1) ... [2018-12-03 03:07:34,338 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-12-03 03:07:34,338 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-12-03 03:07:34,339 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-12-03 03:07:34,339 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-12-03 03:07:34,373 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.12 03:07:34" (1/1) ... [2018-12-03 03:07:34,373 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.12 03:07:34" (1/1) ... [2018-12-03 03:07:34,375 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.12 03:07:34" (1/1) ... [2018-12-03 03:07:34,375 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.12 03:07:34" (1/1) ... [2018-12-03 03:07:34,380 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.12 03:07:34" (1/1) ... [2018-12-03 03:07:34,384 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.12 03:07:34" (1/1) ... [2018-12-03 03:07:34,385 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.12 03:07:34" (1/1) ... [2018-12-03 03:07:34,386 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-12-03 03:07:34,386 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-12-03 03:07:34,386 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-12-03 03:07:34,387 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-12-03 03:07:34,387 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.12 03:07:34" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_c5165ebc-aa00-4260-9094-ed42efb0915e/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 [2018-12-03 03:07:34,418 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-12-03 03:07:34,418 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-12-03 03:07:34,419 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2018-12-03 03:07:34,419 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2018-12-03 03:07:34,419 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-12-03 03:07:34,419 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-12-03 03:07:34,419 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2018-12-03 03:07:34,419 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.alloc [2018-12-03 03:07:34,419 INFO L130 BoogieDeclarations]: Found specification of procedure round_float [2018-12-03 03:07:34,419 INFO L138 BoogieDeclarations]: Found implementation of procedure round_float [2018-12-03 03:07:34,419 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-12-03 03:07:34,419 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-12-03 03:07:34,420 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2018-12-03 03:07:34,420 INFO L130 BoogieDeclarations]: Found specification of procedure __signbit_float [2018-12-03 03:07:34,420 INFO L138 BoogieDeclarations]: Found implementation of procedure __signbit_float [2018-12-03 03:07:34,420 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2018-12-03 03:07:34,574 INFO L275 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-12-03 03:07:34,575 INFO L280 CfgBuilder]: Removed 6 assue(true) statements. [2018-12-03 03:07:34,575 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.12 03:07:34 BoogieIcfgContainer [2018-12-03 03:07:34,575 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-12-03 03:07:34,575 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-12-03 03:07:34,576 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-12-03 03:07:34,578 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-12-03 03:07:34,578 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 03.12 03:07:34" (1/3) ... [2018-12-03 03:07:34,578 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3c72551b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.12 03:07:34, skipping insertion in model container [2018-12-03 03:07:34,578 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.12 03:07:34" (2/3) ... [2018-12-03 03:07:34,579 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3c72551b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.12 03:07:34, skipping insertion in model container [2018-12-03 03:07:34,579 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.12 03:07:34" (3/3) ... [2018-12-03 03:07:34,580 INFO L112 eAbstractionObserver]: Analyzing ICFG float_req_bl_1032a_true-unreach-call.c [2018-12-03 03:07:34,586 INFO L156 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-12-03 03:07:34,590 INFO L168 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-12-03 03:07:34,599 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-12-03 03:07:34,617 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-12-03 03:07:34,617 INFO L383 AbstractCegarLoop]: Hoare is true [2018-12-03 03:07:34,617 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-12-03 03:07:34,618 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-12-03 03:07:34,618 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-12-03 03:07:34,618 INFO L387 AbstractCegarLoop]: Difference is false [2018-12-03 03:07:34,618 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-12-03 03:07:34,618 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-12-03 03:07:34,630 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states. [2018-12-03 03:07:34,633 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2018-12-03 03:07:34,633 INFO L394 BasicCegarLoop]: Found error trace [2018-12-03 03:07:34,634 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-03 03:07:34,635 INFO L423 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-03 03:07:34,639 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-03 03:07:34,639 INFO L82 PathProgramCache]: Analyzing trace with hash 564888569, now seen corresponding path program 1 times [2018-12-03 03:07:34,640 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-12-03 03:07:34,668 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-03 03:07:34,668 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-03 03:07:34,669 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-03 03:07:34,669 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-12-03 03:07:34,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-03 03:07:34,714 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-03 03:07:34,716 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-12-03 03:07:34,716 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-12-03 03:07:34,716 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-12-03 03:07:34,718 INFO L459 AbstractCegarLoop]: Interpolant automaton has 2 states [2018-12-03 03:07:34,725 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2018-12-03 03:07:34,726 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-12-03 03:07:34,727 INFO L87 Difference]: Start difference. First operand 38 states. Second operand 2 states. [2018-12-03 03:07:34,739 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-03 03:07:34,740 INFO L93 Difference]: Finished difference Result 68 states and 93 transitions. [2018-12-03 03:07:34,740 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2018-12-03 03:07:34,740 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 18 [2018-12-03 03:07:34,741 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-03 03:07:34,746 INFO L225 Difference]: With dead ends: 68 [2018-12-03 03:07:34,746 INFO L226 Difference]: Without dead ends: 34 [2018-12-03 03:07:34,748 INFO L631 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 [2018-12-03 03:07:34,757 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34 states. [2018-12-03 03:07:34,767 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34 to 34. [2018-12-03 03:07:34,768 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34 states. [2018-12-03 03:07:34,768 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 39 transitions. [2018-12-03 03:07:34,769 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 39 transitions. Word has length 18 [2018-12-03 03:07:34,769 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-03 03:07:34,769 INFO L480 AbstractCegarLoop]: Abstraction has 34 states and 39 transitions. [2018-12-03 03:07:34,769 INFO L481 AbstractCegarLoop]: Interpolant automaton has 2 states. [2018-12-03 03:07:34,769 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 39 transitions. [2018-12-03 03:07:34,770 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2018-12-03 03:07:34,770 INFO L394 BasicCegarLoop]: Found error trace [2018-12-03 03:07:34,770 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-03 03:07:34,770 INFO L423 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-03 03:07:34,770 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-03 03:07:34,770 INFO L82 PathProgramCache]: Analyzing trace with hash -1333163618, now seen corresponding path program 1 times [2018-12-03 03:07:34,771 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-12-03 03:07:34,771 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-03 03:07:34,771 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-03 03:07:34,771 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-03 03:07:34,771 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-12-03 03:07:34,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-12-03 03:07:34,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-12-03 03:07:34,820 INFO L469 BasicCegarLoop]: Counterexample might be feasible [2018-12-03 03:07:34,837 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 03.12 03:07:34 BoogieIcfgContainer [2018-12-03 03:07:34,837 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-12-03 03:07:34,837 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2018-12-03 03:07:34,837 INFO L271 PluginConnector]: Initializing Witness Printer... [2018-12-03 03:07:34,837 INFO L276 PluginConnector]: Witness Printer initialized [2018-12-03 03:07:34,838 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.12 03:07:34" (3/4) ... [2018-12-03 03:07:34,840 INFO L147 WitnessPrinter]: No result that supports witness generation found [2018-12-03 03:07:34,840 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2018-12-03 03:07:34,840 INFO L168 Benchmark]: Toolchain (without parser) took 655.47 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 93.3 MB). Free memory was 961.4 MB in the beginning and 1.0 GB in the end (delta: -71.9 MB). Peak memory consumption was 21.4 MB. Max. memory is 11.5 GB. [2018-12-03 03:07:34,841 INFO L168 Benchmark]: CDTParser took 0.11 ms. Allocated memory is still 1.0 GB. Free memory is still 982.3 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-12-03 03:07:34,842 INFO L168 Benchmark]: CACSL2BoogieTranslator took 137.56 ms. Allocated memory is still 1.0 GB. Free memory was 961.4 MB in the beginning and 950.6 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. [2018-12-03 03:07:34,842 INFO L168 Benchmark]: Boogie Procedure Inliner took 14.57 ms. Allocated memory is still 1.0 GB. Free memory was 950.6 MB in the beginning and 945.3 MB in the end (delta: 5.4 MB). Peak memory consumption was 5.4 MB. Max. memory is 11.5 GB. [2018-12-03 03:07:34,842 INFO L168 Benchmark]: Boogie Preprocessor took 47.68 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 93.3 MB). Free memory was 945.3 MB in the beginning and 1.1 GB in the end (delta: -139.0 MB). Peak memory consumption was 13.1 MB. Max. memory is 11.5 GB. [2018-12-03 03:07:34,843 INFO L168 Benchmark]: RCFGBuilder took 188.59 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 19.0 MB). Peak memory consumption was 19.0 MB. Max. memory is 11.5 GB. [2018-12-03 03:07:34,843 INFO L168 Benchmark]: TraceAbstraction took 261.34 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.0 GB in the end (delta: 32.0 MB). Peak memory consumption was 32.0 MB. Max. memory is 11.5 GB. [2018-12-03 03:07:34,843 INFO L168 Benchmark]: Witness Printer took 3.01 ms. Allocated memory is still 1.1 GB. Free memory is still 1.0 GB. There was no memory consumed. Max. memory is 11.5 GB. [2018-12-03 03:07:34,845 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.11 ms. Allocated memory is still 1.0 GB. Free memory is still 982.3 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 137.56 ms. Allocated memory is still 1.0 GB. Free memory was 961.4 MB in the beginning and 950.6 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 14.57 ms. Allocated memory is still 1.0 GB. Free memory was 950.6 MB in the beginning and 945.3 MB in the end (delta: 5.4 MB). Peak memory consumption was 5.4 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 47.68 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 93.3 MB). Free memory was 945.3 MB in the beginning and 1.1 GB in the end (delta: -139.0 MB). Peak memory consumption was 13.1 MB. Max. memory is 11.5 GB. * RCFGBuilder took 188.59 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 19.0 MB). Peak memory consumption was 19.0 MB. Max. memory is 11.5 GB. * TraceAbstraction took 261.34 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.0 GB in the end (delta: 32.0 MB). Peak memory consumption was 32.0 MB. Max. memory is 11.5 GB. * Witness Printer took 3.01 ms. Allocated memory is still 1.1 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.plugins.generator.traceabstraction: - UnprovableResult [Line: 80]: Unable to prove that call of __VERIFIER_error() unreachable Unable to prove that call of __VERIFIER_error() unreachable Reason: overapproximation of someBinaryFLOATComparisonOperation at line 79, overapproximation of bitwiseAnd at line 23, overapproximation of someBinaryArithmeticFLOAToperation at line 43. Possible FailurePath: [L75] float x = 0.0f; VAL [x=0] [L76] CALL, EXPR round_float(x) VAL [\old(x)=0] [L13] __uint32_t w; [L15] int exponent_less_127; VAL [\old(x)=0, x=0] [L18] ieee_float_shape_type gf_u; [L19] gf_u.value = (x) [L20] EXPR gf_u.word [L20] (w) = gf_u.word [L23] exponent_less_127 = (int)((w & 0x7f800000) >> 23) - 127 VAL [\old(x)=0, exponent_less_127=128, w=9, x=0] [L25] COND FALSE !(exponent_less_127 < 23) VAL [\old(x)=0, exponent_less_127=128, w=9, x=0] [L41] COND TRUE exponent_less_127 == 128 [L43] return x + x; VAL [\old(x)=0, exponent_less_127=128, w=9, x=0] [L76] RET, EXPR round_float(x) VAL [round_float(x)=7, x=0] [L76] float res = round_float(x); [L79] EXPR res == 0.0f && __signbit_float(res) == 0 VAL [res=7, res == 0.0f && __signbit_float(res) == 0=0, x=0] [L79] COND TRUE !(res == 0.0f && __signbit_float(res) == 0) [L80] __VERIFIER_error() VAL [res=7, x=0] - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 38 locations, 1 error locations. UNSAFE Result, 0.2s OverallTime, 2 OverallIterations, 1 TraceHistogramMax, 0.0s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 43 SDtfs, 0 SDslu, 0 SDs, 0 SdLazy, 0 SolverSat, 0 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=38occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s AbstIntTime, 0 AbstIntIterations, 0 AbstIntStrong, NaN AbsIntWeakeningRatio, NaN AbsIntAvgWeakeningVarsNumRemoved, NaN AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 1 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 37 NumberOfCodeBlocks, 37 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 17 ConstructedInterpolants, 0 QuantifiedInterpolants, 289 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 1 InterpolantComputations, 1 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces Received shutdown request... ### Bit-precise run ### This is Ultimate 0.1.23-635dfa2 [2018-12-03 03:07:36,187 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-12-03 03:07:36,188 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-12-03 03:07:36,194 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-12-03 03:07:36,194 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-12-03 03:07:36,194 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-12-03 03:07:36,195 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-12-03 03:07:36,196 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-12-03 03:07:36,197 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-12-03 03:07:36,197 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-12-03 03:07:36,197 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-12-03 03:07:36,198 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-12-03 03:07:36,198 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-12-03 03:07:36,199 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-12-03 03:07:36,199 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-12-03 03:07:36,199 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-12-03 03:07:36,200 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-12-03 03:07:36,201 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-12-03 03:07:36,202 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-12-03 03:07:36,202 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-12-03 03:07:36,203 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-12-03 03:07:36,203 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-12-03 03:07:36,205 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-12-03 03:07:36,205 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-12-03 03:07:36,205 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-12-03 03:07:36,205 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-12-03 03:07:36,206 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-12-03 03:07:36,206 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-12-03 03:07:36,207 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-12-03 03:07:36,207 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-12-03 03:07:36,207 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-12-03 03:07:36,208 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-12-03 03:07:36,208 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-12-03 03:07:36,208 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-12-03 03:07:36,208 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-12-03 03:07:36,209 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-12-03 03:07:36,209 INFO L98 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/working_dir_c5165ebc-aa00-4260-9094-ed42efb0915e/bin-2019/utaipan/config/svcomp-Reach-32bit-Taipan_Bitvector.epf [2018-12-03 03:07:36,216 INFO L110 SettingsManager]: Loading preferences was successful [2018-12-03 03:07:36,216 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-12-03 03:07:36,217 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-12-03 03:07:36,217 INFO L133 SettingsManager]: * ... calls to implemented procedures=ONLY_FOR_CONCURRENT_PROGRAMS [2018-12-03 03:07:36,217 INFO L133 SettingsManager]: * User list type=DISABLED [2018-12-03 03:07:36,217 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-12-03 03:07:36,217 INFO L133 SettingsManager]: * Explicit value domain=true [2018-12-03 03:07:36,217 INFO L133 SettingsManager]: * Octagon Domain=false [2018-12-03 03:07:36,218 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-12-03 03:07:36,218 INFO L133 SettingsManager]: * Interval Domain=false [2018-12-03 03:07:36,218 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-12-03 03:07:36,218 INFO L133 SettingsManager]: * sizeof long=4 [2018-12-03 03:07:36,218 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-12-03 03:07:36,219 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-12-03 03:07:36,219 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-12-03 03:07:36,219 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-12-03 03:07:36,219 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-12-03 03:07:36,219 INFO L133 SettingsManager]: * Use bitvectors instead of ints=true [2018-12-03 03:07:36,219 INFO L133 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2018-12-03 03:07:36,219 INFO L133 SettingsManager]: * sizeof long double=12 [2018-12-03 03:07:36,219 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-12-03 03:07:36,220 INFO L133 SettingsManager]: * Use constant arrays=true [2018-12-03 03:07:36,220 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-12-03 03:07:36,220 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-12-03 03:07:36,220 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-12-03 03:07:36,220 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-12-03 03:07:36,220 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-12-03 03:07:36,220 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-12-03 03:07:36,220 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-12-03 03:07:36,221 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-12-03 03:07:36,221 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-12-03 03:07:36,221 INFO L133 SettingsManager]: * Trace refinement strategy=WALRUS [2018-12-03 03:07:36,221 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-12-03 03:07:36,221 INFO L133 SettingsManager]: * Command for external solver=cvc4 --incremental --rewrite-divk --print-success --lang smt [2018-12-03 03:07:36,221 INFO L133 SettingsManager]: * Logic for external solver=AUFBV [2018-12-03 03:07:36,221 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_c5165ebc-aa00-4260-9094-ed42efb0915e/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 -> 9a3696439220bbea1d6ed5ed3b22aa10206af5de [2018-12-03 03:07:36,239 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-12-03 03:07:36,246 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-12-03 03:07:36,248 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-12-03 03:07:36,249 INFO L271 PluginConnector]: Initializing CDTParser... [2018-12-03 03:07:36,249 INFO L276 PluginConnector]: CDTParser initialized [2018-12-03 03:07:36,250 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/working_dir_c5165ebc-aa00-4260-9094-ed42efb0915e/bin-2019/utaipan/../../sv-benchmarks/c/float-newlib/float_req_bl_1032a_true-unreach-call.c [2018-12-03 03:07:36,284 INFO L221 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_c5165ebc-aa00-4260-9094-ed42efb0915e/bin-2019/utaipan/data/ae736a71e/b43bbece7a394614bedb6ea13baaa624/FLAG5194a1afc [2018-12-03 03:07:36,680 INFO L307 CDTParser]: Found 1 translation units. [2018-12-03 03:07:36,680 INFO L161 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/working_dir_c5165ebc-aa00-4260-9094-ed42efb0915e/sv-benchmarks/c/float-newlib/float_req_bl_1032a_true-unreach-call.c [2018-12-03 03:07:36,685 INFO L355 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_c5165ebc-aa00-4260-9094-ed42efb0915e/bin-2019/utaipan/data/ae736a71e/b43bbece7a394614bedb6ea13baaa624/FLAG5194a1afc [2018-12-03 03:07:36,693 INFO L363 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/working_dir_c5165ebc-aa00-4260-9094-ed42efb0915e/bin-2019/utaipan/data/ae736a71e/b43bbece7a394614bedb6ea13baaa624 [2018-12-03 03:07:36,695 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-12-03 03:07:36,696 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2018-12-03 03:07:36,696 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-12-03 03:07:36,696 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-12-03 03:07:36,698 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-12-03 03:07:36,699 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.12 03:07:36" (1/1) ... [2018-12-03 03:07:36,701 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@69e2f300 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.12 03:07:36, skipping insertion in model container [2018-12-03 03:07:36,701 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.12 03:07:36" (1/1) ... [2018-12-03 03:07:36,707 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-12-03 03:07:36,720 INFO L176 MainTranslator]: Built tables and reachable declarations [2018-12-03 03:07:36,826 INFO L203 PostProcessor]: Analyzing one entry point: main [2018-12-03 03:07:36,829 INFO L191 MainTranslator]: Completed pre-run [2018-12-03 03:07:36,845 INFO L203 PostProcessor]: Analyzing one entry point: main [2018-12-03 03:07:36,859 INFO L195 MainTranslator]: Completed translation [2018-12-03 03:07:36,859 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.12 03:07:36 WrapperNode [2018-12-03 03:07:36,860 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-12-03 03:07:36,860 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-12-03 03:07:36,860 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-12-03 03:07:36,860 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-12-03 03:07:36,865 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.12 03:07:36" (1/1) ... [2018-12-03 03:07:36,871 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.12 03:07:36" (1/1) ... [2018-12-03 03:07:36,876 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-12-03 03:07:36,876 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-12-03 03:07:36,876 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-12-03 03:07:36,876 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-12-03 03:07:36,882 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.12 03:07:36" (1/1) ... [2018-12-03 03:07:36,882 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.12 03:07:36" (1/1) ... [2018-12-03 03:07:36,884 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.12 03:07:36" (1/1) ... [2018-12-03 03:07:36,884 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.12 03:07:36" (1/1) ... [2018-12-03 03:07:36,890 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.12 03:07:36" (1/1) ... [2018-12-03 03:07:36,894 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.12 03:07:36" (1/1) ... [2018-12-03 03:07:36,895 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.12 03:07:36" (1/1) ... [2018-12-03 03:07:36,897 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-12-03 03:07:36,897 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-12-03 03:07:36,897 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-12-03 03:07:36,897 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-12-03 03:07:36,898 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.12 03:07:36" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_c5165ebc-aa00-4260-9094-ed42efb0915e/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 [2018-12-03 03:07:36,961 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-12-03 03:07:36,961 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-12-03 03:07:36,962 INFO L130 BoogieDeclarations]: Found specification of procedure read~intFLOATTYPE4 [2018-12-03 03:07:36,962 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-12-03 03:07:36,962 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-12-03 03:07:36,962 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.alloc [2018-12-03 03:07:36,962 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2018-12-03 03:07:36,962 INFO L130 BoogieDeclarations]: Found specification of procedure round_float [2018-12-03 03:07:36,962 INFO L138 BoogieDeclarations]: Found implementation of procedure round_float [2018-12-03 03:07:36,962 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-12-03 03:07:36,962 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-12-03 03:07:36,962 INFO L130 BoogieDeclarations]: Found specification of procedure write~intFLOATTYPE4 [2018-12-03 03:07:36,962 INFO L130 BoogieDeclarations]: Found specification of procedure __signbit_float [2018-12-03 03:07:36,963 INFO L138 BoogieDeclarations]: Found implementation of procedure __signbit_float [2018-12-03 03:07:36,963 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2018-12-03 03:07:36,963 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2018-12-03 03:07:37,066 WARN L317 ript$VariableManager]: TermVariabe |q#valueAsBitvector| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-03 03:07:37,129 WARN L317 ript$VariableManager]: TermVariabe |q#valueAsBitvector| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-03 03:07:37,131 INFO L275 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-12-03 03:07:37,131 INFO L280 CfgBuilder]: Removed 6 assue(true) statements. [2018-12-03 03:07:37,131 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.12 03:07:37 BoogieIcfgContainer [2018-12-03 03:07:37,131 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-12-03 03:07:37,132 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-12-03 03:07:37,132 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-12-03 03:07:37,133 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-12-03 03:07:37,134 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 03.12 03:07:36" (1/3) ... [2018-12-03 03:07:37,134 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7dabffd4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.12 03:07:37, skipping insertion in model container [2018-12-03 03:07:37,134 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.12 03:07:36" (2/3) ... [2018-12-03 03:07:37,134 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7dabffd4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.12 03:07:37, skipping insertion in model container [2018-12-03 03:07:37,134 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.12 03:07:37" (3/3) ... [2018-12-03 03:07:37,135 INFO L112 eAbstractionObserver]: Analyzing ICFG float_req_bl_1032a_true-unreach-call.c [2018-12-03 03:07:37,141 INFO L156 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-12-03 03:07:37,146 INFO L168 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-12-03 03:07:37,158 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-12-03 03:07:37,175 INFO L133 ementStrategyFactory]: Using default assertion order modulation [2018-12-03 03:07:37,175 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-12-03 03:07:37,175 INFO L383 AbstractCegarLoop]: Hoare is true [2018-12-03 03:07:37,175 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-12-03 03:07:37,175 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-12-03 03:07:37,176 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-12-03 03:07:37,176 INFO L387 AbstractCegarLoop]: Difference is false [2018-12-03 03:07:37,176 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-12-03 03:07:37,176 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-12-03 03:07:37,185 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states. [2018-12-03 03:07:37,188 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2018-12-03 03:07:37,188 INFO L394 BasicCegarLoop]: Found error trace [2018-12-03 03:07:37,188 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-03 03:07:37,190 INFO L423 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-03 03:07:37,193 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-03 03:07:37,193 INFO L82 PathProgramCache]: Analyzing trace with hash 564888569, now seen corresponding path program 1 times [2018-12-03 03:07:37,195 INFO L223 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-12-03 03:07:37,195 INFO L69 tionRefinementEngine]: Using refinement strategy WalrusRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_c5165ebc-aa00-4260-9094-ed42efb0915e/bin-2019/utaipan/mathsat Starting monitored process 2 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with mathsat -unsat_core_generation=3 [2018-12-03 03:07:37,200 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-03 03:07:37,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-03 03:07:37,246 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-03 03:07:37,257 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-03 03:07:37,257 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-12-03 03:07:37,266 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-12-03 03:07:37,266 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-12-03 03:07:37,268 INFO L459 AbstractCegarLoop]: Interpolant automaton has 2 states [2018-12-03 03:07:37,275 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2018-12-03 03:07:37,275 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-12-03 03:07:37,277 INFO L87 Difference]: Start difference. First operand 38 states. Second operand 2 states. [2018-12-03 03:07:37,289 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-03 03:07:37,290 INFO L93 Difference]: Finished difference Result 68 states and 93 transitions. [2018-12-03 03:07:37,290 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2018-12-03 03:07:37,291 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 18 [2018-12-03 03:07:37,291 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-03 03:07:37,298 INFO L225 Difference]: With dead ends: 68 [2018-12-03 03:07:37,299 INFO L226 Difference]: Without dead ends: 34 [2018-12-03 03:07:37,301 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-12-03 03:07:37,313 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34 states. [2018-12-03 03:07:37,323 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34 to 34. [2018-12-03 03:07:37,324 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34 states. [2018-12-03 03:07:37,325 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 39 transitions. [2018-12-03 03:07:37,326 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 39 transitions. Word has length 18 [2018-12-03 03:07:37,326 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-03 03:07:37,326 INFO L480 AbstractCegarLoop]: Abstraction has 34 states and 39 transitions. [2018-12-03 03:07:37,326 INFO L481 AbstractCegarLoop]: Interpolant automaton has 2 states. [2018-12-03 03:07:37,326 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 39 transitions. [2018-12-03 03:07:37,327 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2018-12-03 03:07:37,327 INFO L394 BasicCegarLoop]: Found error trace [2018-12-03 03:07:37,327 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-03 03:07:37,327 INFO L423 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-03 03:07:37,328 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-03 03:07:37,328 INFO L82 PathProgramCache]: Analyzing trace with hash -1333163618, now seen corresponding path program 1 times [2018-12-03 03:07:37,328 INFO L223 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-12-03 03:07:37,328 INFO L69 tionRefinementEngine]: Using refinement strategy WalrusRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_c5165ebc-aa00-4260-9094-ed42efb0915e/bin-2019/utaipan/mathsat Starting monitored process 3 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with mathsat -unsat_core_generation=3 [2018-12-03 03:07:37,331 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-03 03:07:37,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-03 03:07:37,371 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-03 03:07:37,468 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-03 03:07:37,468 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-12-03 03:07:37,475 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-12-03 03:07:37,475 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2018-12-03 03:07:37,476 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-12-03 03:07:37,476 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-12-03 03:07:37,477 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2018-12-03 03:07:37,477 INFO L87 Difference]: Start difference. First operand 34 states and 39 transitions. Second operand 7 states. [2018-12-03 03:07:37,815 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-03 03:07:37,816 INFO L93 Difference]: Finished difference Result 51 states and 56 transitions. [2018-12-03 03:07:37,816 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2018-12-03 03:07:37,816 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 19 [2018-12-03 03:07:37,817 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-03 03:07:37,818 INFO L225 Difference]: With dead ends: 51 [2018-12-03 03:07:37,819 INFO L226 Difference]: Without dead ends: 35 [2018-12-03 03:07:37,819 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2018-12-03 03:07:37,820 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states. [2018-12-03 03:07:37,823 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 33. [2018-12-03 03:07:37,823 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33 states. [2018-12-03 03:07:37,824 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 36 transitions. [2018-12-03 03:07:37,824 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 36 transitions. Word has length 19 [2018-12-03 03:07:37,824 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-03 03:07:37,824 INFO L480 AbstractCegarLoop]: Abstraction has 33 states and 36 transitions. [2018-12-03 03:07:37,825 INFO L481 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-12-03 03:07:37,825 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 36 transitions. [2018-12-03 03:07:37,825 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2018-12-03 03:07:37,825 INFO L394 BasicCegarLoop]: Found error trace [2018-12-03 03:07:37,825 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-03 03:07:37,826 INFO L423 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-03 03:07:37,826 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-03 03:07:37,826 INFO L82 PathProgramCache]: Analyzing trace with hash 1215677854, now seen corresponding path program 1 times [2018-12-03 03:07:37,826 INFO L223 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-12-03 03:07:37,826 INFO L69 tionRefinementEngine]: Using refinement strategy WalrusRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_c5165ebc-aa00-4260-9094-ed42efb0915e/bin-2019/utaipan/mathsat Starting monitored process 4 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with mathsat -unsat_core_generation=3 [2018-12-03 03:07:37,830 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-03 03:07:37,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-03 03:07:37,856 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-03 03:07:37,912 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-03 03:07:37,912 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-12-03 03:07:37,923 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-12-03 03:07:37,923 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2018-12-03 03:07:37,923 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-12-03 03:07:37,923 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-12-03 03:07:37,924 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2018-12-03 03:07:37,924 INFO L87 Difference]: Start difference. First operand 33 states and 36 transitions. Second operand 7 states. [2018-12-03 03:07:38,224 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-03 03:07:38,224 INFO L93 Difference]: Finished difference Result 53 states and 56 transitions. [2018-12-03 03:07:38,225 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2018-12-03 03:07:38,225 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 20 [2018-12-03 03:07:38,225 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-03 03:07:38,225 INFO L225 Difference]: With dead ends: 53 [2018-12-03 03:07:38,226 INFO L226 Difference]: Without dead ends: 32 [2018-12-03 03:07:38,226 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2018-12-03 03:07:38,226 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states. [2018-12-03 03:07:38,228 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 32. [2018-12-03 03:07:38,228 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32 states. [2018-12-03 03:07:38,229 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 33 transitions. [2018-12-03 03:07:38,229 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 33 transitions. Word has length 20 [2018-12-03 03:07:38,229 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-03 03:07:38,229 INFO L480 AbstractCegarLoop]: Abstraction has 32 states and 33 transitions. [2018-12-03 03:07:38,229 INFO L481 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-12-03 03:07:38,229 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 33 transitions. [2018-12-03 03:07:38,230 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2018-12-03 03:07:38,230 INFO L394 BasicCegarLoop]: Found error trace [2018-12-03 03:07:38,230 INFO L402 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] [2018-12-03 03:07:38,230 INFO L423 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-03 03:07:38,230 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-03 03:07:38,231 INFO L82 PathProgramCache]: Analyzing trace with hash 734742422, now seen corresponding path program 1 times [2018-12-03 03:07:38,231 INFO L223 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-12-03 03:07:38,231 INFO L69 tionRefinementEngine]: Using refinement strategy WalrusRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_c5165ebc-aa00-4260-9094-ed42efb0915e/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 [2018-12-03 03:07:38,234 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-03 03:07:38,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-03 03:07:38,259 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-03 03:07:38,318 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-03 03:07:38,318 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-12-03 03:07:38,325 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-12-03 03:07:38,325 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2018-12-03 03:07:38,325 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-12-03 03:07:38,326 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-12-03 03:07:38,326 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2018-12-03 03:07:38,326 INFO L87 Difference]: Start difference. First operand 32 states and 33 transitions. Second operand 7 states. [2018-12-03 03:07:38,513 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-03 03:07:38,513 INFO L93 Difference]: Finished difference Result 50 states and 51 transitions. [2018-12-03 03:07:38,513 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2018-12-03 03:07:38,514 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 23 [2018-12-03 03:07:38,514 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-03 03:07:38,514 INFO L225 Difference]: With dead ends: 50 [2018-12-03 03:07:38,514 INFO L226 Difference]: Without dead ends: 32 [2018-12-03 03:07:38,514 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=37, Invalid=95, Unknown=0, NotChecked=0, Total=132 [2018-12-03 03:07:38,515 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states. [2018-12-03 03:07:38,516 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 32. [2018-12-03 03:07:38,516 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32 states. [2018-12-03 03:07:38,517 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 32 transitions. [2018-12-03 03:07:38,517 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 32 transitions. Word has length 23 [2018-12-03 03:07:38,517 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-03 03:07:38,517 INFO L480 AbstractCegarLoop]: Abstraction has 32 states and 32 transitions. [2018-12-03 03:07:38,517 INFO L481 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-12-03 03:07:38,517 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 32 transitions. [2018-12-03 03:07:38,517 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2018-12-03 03:07:38,518 INFO L394 BasicCegarLoop]: Found error trace [2018-12-03 03:07:38,518 INFO L402 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] [2018-12-03 03:07:38,518 INFO L423 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-03 03:07:38,518 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-03 03:07:38,518 INFO L82 PathProgramCache]: Analyzing trace with hash 341715412, now seen corresponding path program 1 times [2018-12-03 03:07:38,518 INFO L223 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-12-03 03:07:38,518 INFO L69 tionRefinementEngine]: Using refinement strategy WalrusRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_c5165ebc-aa00-4260-9094-ed42efb0915e/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 [2018-12-03 03:07:38,521 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-03 03:07:38,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-03 03:07:38,544 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-03 03:07:38,595 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-03 03:07:38,595 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-12-03 03:07:38,602 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-12-03 03:07:38,602 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2018-12-03 03:07:38,602 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-12-03 03:07:38,602 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-12-03 03:07:38,602 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2018-12-03 03:07:38,602 INFO L87 Difference]: Start difference. First operand 32 states and 32 transitions. Second operand 7 states. [2018-12-03 03:07:38,681 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-03 03:07:38,681 INFO L93 Difference]: Finished difference Result 35 states and 34 transitions. [2018-12-03 03:07:38,681 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-12-03 03:07:38,681 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 23 [2018-12-03 03:07:38,681 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-03 03:07:38,682 INFO L225 Difference]: With dead ends: 35 [2018-12-03 03:07:38,682 INFO L226 Difference]: Without dead ends: 32 [2018-12-03 03:07:38,682 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2018-12-03 03:07:38,682 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states. [2018-12-03 03:07:38,684 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 32. [2018-12-03 03:07:38,684 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32 states. [2018-12-03 03:07:38,684 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 31 transitions. [2018-12-03 03:07:38,684 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 31 transitions. Word has length 23 [2018-12-03 03:07:38,685 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-03 03:07:38,685 INFO L480 AbstractCegarLoop]: Abstraction has 32 states and 31 transitions. [2018-12-03 03:07:38,685 INFO L481 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-12-03 03:07:38,685 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 31 transitions. [2018-12-03 03:07:38,685 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2018-12-03 03:07:38,685 INFO L394 BasicCegarLoop]: Found error trace [2018-12-03 03:07:38,685 INFO L402 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, 1, 1, 1, 1, 1] [2018-12-03 03:07:38,685 INFO L423 AbstractCegarLoop]: === Iteration 6 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-03 03:07:38,685 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-03 03:07:38,686 INFO L82 PathProgramCache]: Analyzing trace with hash 841303647, now seen corresponding path program 1 times [2018-12-03 03:07:38,686 INFO L223 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-12-03 03:07:38,686 INFO L69 tionRefinementEngine]: Using refinement strategy WalrusRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_c5165ebc-aa00-4260-9094-ed42efb0915e/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 [2018-12-03 03:07:38,689 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-03 03:07:38,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-03 03:07:38,721 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-03 03:07:39,053 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-03 03:07:39,053 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-12-03 03:07:39,062 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-12-03 03:07:39,062 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2018-12-03 03:07:39,062 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2018-12-03 03:07:39,062 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2018-12-03 03:07:39,062 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=183, Unknown=0, NotChecked=0, Total=210 [2018-12-03 03:07:39,063 INFO L87 Difference]: Start difference. First operand 32 states and 31 transitions. Second operand 15 states. [2018-12-03 03:07:39,677 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-03 03:07:39,677 INFO L93 Difference]: Finished difference Result 32 states and 31 transitions. [2018-12-03 03:07:39,677 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2018-12-03 03:07:39,677 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 31 [2018-12-03 03:07:39,678 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-03 03:07:39,678 INFO L225 Difference]: With dead ends: 32 [2018-12-03 03:07:39,678 INFO L226 Difference]: Without dead ends: 0 [2018-12-03 03:07:39,678 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 33 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=71, Invalid=481, Unknown=0, NotChecked=0, Total=552 [2018-12-03 03:07:39,678 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2018-12-03 03:07:39,678 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2018-12-03 03:07:39,678 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2018-12-03 03:07:39,678 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2018-12-03 03:07:39,679 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 31 [2018-12-03 03:07:39,679 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-03 03:07:39,679 INFO L480 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2018-12-03 03:07:39,679 INFO L481 AbstractCegarLoop]: Interpolant automaton has 15 states. [2018-12-03 03:07:39,679 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2018-12-03 03:07:39,679 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2018-12-03 03:07:39,682 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2018-12-03 03:07:39,725 INFO L448 ceAbstractionStarter]: For program point ULTIMATE.initFINAL(line -1) no Hoare annotation was computed. [2018-12-03 03:07:39,725 INFO L451 ceAbstractionStarter]: At program point ULTIMATE.initENTRY(line -1) the Hoare annotation is: true [2018-12-03 03:07:39,725 INFO L448 ceAbstractionStarter]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2018-12-03 03:07:39,725 INFO L451 ceAbstractionStarter]: At program point round_floatENTRY(lines 12 53) the Hoare annotation is: true [2018-12-03 03:07:39,725 INFO L448 ceAbstractionStarter]: For program point L33(lines 33 35) no Hoare annotation was computed. [2018-12-03 03:07:39,725 INFO L448 ceAbstractionStarter]: For program point L25(lines 25 46) no Hoare annotation was computed. [2018-12-03 03:07:39,726 INFO L448 ceAbstractionStarter]: For program point L17-1(lines 17 21) no Hoare annotation was computed. [2018-12-03 03:07:39,726 INFO L444 ceAbstractionStarter]: At program point L17-2(lines 17 21) the Hoare annotation is: (= round_float_~x |round_float_#in~x|) [2018-12-03 03:07:39,726 INFO L448 ceAbstractionStarter]: For program point L17-3(lines 17 21) no Hoare annotation was computed. [2018-12-03 03:07:39,726 INFO L448 ceAbstractionStarter]: For program point round_floatFINAL(lines 12 53) no Hoare annotation was computed. [2018-12-03 03:07:39,726 INFO L448 ceAbstractionStarter]: For program point round_floatEXIT(lines 12 53) no Hoare annotation was computed. [2018-12-03 03:07:39,726 INFO L448 ceAbstractionStarter]: For program point L28(lines 28 30) no Hoare annotation was computed. [2018-12-03 03:07:39,726 INFO L448 ceAbstractionStarter]: For program point L26(lines 26 39) no Hoare annotation was computed. [2018-12-03 03:07:39,726 INFO L448 ceAbstractionStarter]: For program point L47(lines 47 51) no Hoare annotation was computed. [2018-12-03 03:07:39,726 INFO L448 ceAbstractionStarter]: For program point L47-1(lines 12 53) no Hoare annotation was computed. [2018-12-03 03:07:39,726 INFO L448 ceAbstractionStarter]: For program point L47-2(lines 47 51) no Hoare annotation was computed. [2018-12-03 03:07:39,726 INFO L448 ceAbstractionStarter]: For program point L41(lines 41 45) no Hoare annotation was computed. [2018-12-03 03:07:39,726 INFO L448 ceAbstractionStarter]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2018-12-03 03:07:39,726 INFO L451 ceAbstractionStarter]: At program point L-1(line -1) the Hoare annotation is: true [2018-12-03 03:07:39,727 INFO L451 ceAbstractionStarter]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2018-12-03 03:07:39,727 INFO L448 ceAbstractionStarter]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2018-12-03 03:07:39,727 INFO L448 ceAbstractionStarter]: For program point mainErr0ASSERT_VIOLATIONERROR_FUNCTION(line 80) no Hoare annotation was computed. [2018-12-03 03:07:39,727 INFO L451 ceAbstractionStarter]: At program point mainENTRY(lines 67 85) the Hoare annotation is: true [2018-12-03 03:07:39,727 INFO L448 ceAbstractionStarter]: For program point mainEXIT(lines 67 85) no Hoare annotation was computed. [2018-12-03 03:07:39,727 INFO L448 ceAbstractionStarter]: For program point L80(line 80) no Hoare annotation was computed. [2018-12-03 03:07:39,727 INFO L448 ceAbstractionStarter]: For program point L79(line 79) no Hoare annotation was computed. [2018-12-03 03:07:39,727 INFO L444 ceAbstractionStarter]: At program point L79-1(line 79) the Hoare annotation is: (and |main_#t~short8| (= (_ +zero 8 24) main_~x~0) (exists ((v_round_float_~w~0_14 (_ BitVec 32))) (and (= (_ +zero 8 24) (fp ((_ extract 31 31) v_round_float_~w~0_14) ((_ extract 30 23) v_round_float_~w~0_14) ((_ extract 22 0) v_round_float_~w~0_14))) (= main_~res~0 (let ((.cse0 (bvand (_ bv2147483648 32) v_round_float_~w~0_14))) (fp ((_ extract 31 31) .cse0) ((_ extract 30 23) .cse0) ((_ extract 22 0) .cse0))))))) [2018-12-03 03:07:39,727 INFO L448 ceAbstractionStarter]: For program point L79-2(line 79) no Hoare annotation was computed. [2018-12-03 03:07:39,727 INFO L448 ceAbstractionStarter]: For program point mainFINAL(lines 67 85) no Hoare annotation was computed. [2018-12-03 03:07:39,727 INFO L444 ceAbstractionStarter]: At program point L76(line 76) the Hoare annotation is: (= (_ +zero 8 24) main_~x~0) [2018-12-03 03:07:39,728 INFO L448 ceAbstractionStarter]: For program point L76-1(line 76) no Hoare annotation was computed. [2018-12-03 03:07:39,728 INFO L448 ceAbstractionStarter]: For program point L79-4(lines 79 82) no Hoare annotation was computed. [2018-12-03 03:07:39,728 INFO L448 ceAbstractionStarter]: For program point L58-1(lines 58 62) no Hoare annotation was computed. [2018-12-03 03:07:39,728 INFO L444 ceAbstractionStarter]: At program point L58-2(lines 58 62) the Hoare annotation is: (= |__signbit_float_#in~x| __signbit_float_~x) [2018-12-03 03:07:39,728 INFO L448 ceAbstractionStarter]: For program point __signbit_floatFINAL(lines 55 65) no Hoare annotation was computed. [2018-12-03 03:07:39,728 INFO L448 ceAbstractionStarter]: For program point L58-3(lines 58 62) no Hoare annotation was computed. [2018-12-03 03:07:39,728 INFO L451 ceAbstractionStarter]: At program point __signbit_floatENTRY(lines 55 65) the Hoare annotation is: true [2018-12-03 03:07:39,728 INFO L448 ceAbstractionStarter]: For program point __signbit_floatEXIT(lines 55 65) no Hoare annotation was computed. [2018-12-03 03:07:39,736 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 03.12 03:07:39 BoogieIcfgContainer [2018-12-03 03:07:39,736 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-12-03 03:07:39,737 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2018-12-03 03:07:39,737 INFO L271 PluginConnector]: Initializing Witness Printer... [2018-12-03 03:07:39,737 INFO L276 PluginConnector]: Witness Printer initialized [2018-12-03 03:07:39,737 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.12 03:07:37" (3/4) ... [2018-12-03 03:07:39,740 INFO L144 WitnessPrinter]: Generating witness for correct program [2018-12-03 03:07:39,744 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure ULTIMATE.init [2018-12-03 03:07:39,744 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure round_float [2018-12-03 03:07:39,745 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure main [2018-12-03 03:07:39,745 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure __signbit_float [2018-12-03 03:07:39,747 INFO L905 BoogieBacktranslator]: Reduced CFG by removing 19 nodes and edges [2018-12-03 03:07:39,747 INFO L905 BoogieBacktranslator]: Reduced CFG by removing 8 nodes and edges [2018-12-03 03:07:39,748 INFO L905 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2018-12-03 03:07:39,764 WARN L221 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: x == \old(x) [2018-12-03 03:07:39,765 WARN L221 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: \old(x) == x [2018-12-03 03:07:39,780 INFO L145 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/working_dir_c5165ebc-aa00-4260-9094-ed42efb0915e/bin-2019/utaipan/witness.graphml [2018-12-03 03:07:39,780 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2018-12-03 03:07:39,781 INFO L168 Benchmark]: Toolchain (without parser) took 3085.76 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 145.2 MB). Free memory was 944.7 MB in the beginning and 849.6 MB in the end (delta: 95.1 MB). Peak memory consumption was 240.4 MB. Max. memory is 11.5 GB. [2018-12-03 03:07:39,782 INFO L168 Benchmark]: CDTParser took 0.12 ms. Allocated memory is still 1.0 GB. Free memory is still 972.9 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-12-03 03:07:39,782 INFO L168 Benchmark]: CACSL2BoogieTranslator took 163.60 ms. Allocated memory is still 1.0 GB. Free memory was 944.7 MB in the beginning and 932.6 MB in the end (delta: 12.1 MB). Peak memory consumption was 12.1 MB. Max. memory is 11.5 GB. [2018-12-03 03:07:39,782 INFO L168 Benchmark]: Boogie Procedure Inliner took 15.84 ms. Allocated memory is still 1.0 GB. Free memory was 932.6 MB in the beginning and 927.3 MB in the end (delta: 5.4 MB). Peak memory consumption was 5.4 MB. Max. memory is 11.5 GB. [2018-12-03 03:07:39,782 INFO L168 Benchmark]: Boogie Preprocessor took 20.80 ms. Allocated memory is still 1.0 GB. Free memory is still 927.3 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-12-03 03:07:39,783 INFO L168 Benchmark]: RCFGBuilder took 234.26 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 145.2 MB). Free memory was 927.3 MB in the beginning and 1.1 GB in the end (delta: -188.2 MB). Peak memory consumption was 14.4 MB. Max. memory is 11.5 GB. [2018-12-03 03:07:39,783 INFO L168 Benchmark]: TraceAbstraction took 2604.62 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 856.3 MB in the end (delta: 259.2 MB). Peak memory consumption was 259.2 MB. Max. memory is 11.5 GB. [2018-12-03 03:07:39,783 INFO L168 Benchmark]: Witness Printer took 43.78 ms. Allocated memory is still 1.2 GB. Free memory was 856.3 MB in the beginning and 849.6 MB in the end (delta: 6.7 MB). Peak memory consumption was 6.7 MB. Max. memory is 11.5 GB. [2018-12-03 03:07:39,785 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.12 ms. Allocated memory is still 1.0 GB. Free memory is still 972.9 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 163.60 ms. Allocated memory is still 1.0 GB. Free memory was 944.7 MB in the beginning and 932.6 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 15.84 ms. Allocated memory is still 1.0 GB. Free memory was 932.6 MB in the beginning and 927.3 MB in the end (delta: 5.4 MB). Peak memory consumption was 5.4 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 20.80 ms. Allocated memory is still 1.0 GB. Free memory is still 927.3 MB. There was no memory consumed. Max. memory is 11.5 GB. * RCFGBuilder took 234.26 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 145.2 MB). Free memory was 927.3 MB in the beginning and 1.1 GB in the end (delta: -188.2 MB). Peak memory consumption was 14.4 MB. Max. memory is 11.5 GB. * TraceAbstraction took 2604.62 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 856.3 MB in the end (delta: 259.2 MB). Peak memory consumption was 259.2 MB. Max. memory is 11.5 GB. * Witness Printer took 43.78 ms. Allocated memory is still 1.2 GB. Free memory was 856.3 MB in the beginning and 849.6 MB in the end (delta: 6.7 MB). Peak memory consumption was 6.7 MB. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 80]: 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: 58]: Loop Invariant Derived loop invariant: \old(x) == x - InvariantResult [Line: 17]: Loop Invariant Derived loop invariant: x == \old(x) - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 38 locations, 1 error locations. SAFE Result, 2.5s OverallTime, 6 OverallIterations, 1 TraceHistogramMax, 1.5s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 168 SDtfs, 124 SDslu, 630 SDs, 0 SdLazy, 310 SolverSat, 20 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.6s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 154 GetRequests, 95 SyntacticMatches, 0 SemanticMatches, 59 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 56 ImplicationChecksByTransitivity, 1.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=38occurred 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, 6 MinimizatonAttempts, 2 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 10 LocationsWithAnnotation, 18 PreInvPairs, 21 NumberOfFragments, 46 HoareAnnotationTreeSize, 18 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 10 FomulaSimplificationsInter, 0 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.6s InterpolantComputationTime, 134 NumberOfCodeBlocks, 134 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 128 ConstructedInterpolants, 35 QuantifiedInterpolants, 22710 SizeOfPredicates, 23 NumberOfNonLiveVariables, 349 ConjunctsInSsa, 52 ConjunctsInUnsatCore, 6 InterpolantComputations, 6 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...