./Ultimate.py --spec ../../sv-benchmarks/c/ReachSafety.prp --file ../../sv-benchmarks/c/float-newlib/float_req_bl_0620a_true-unreach-call.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 5842f4b8 Calling Ultimate with: java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/working_dir_20e03893-6bc8-4db8-bb56-f8ab022cbf74/bin-2019/utaipan/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/working_dir_20e03893-6bc8-4db8-bb56-f8ab022cbf74/bin-2019/utaipan/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/working_dir_20e03893-6bc8-4db8-bb56-f8ab022cbf74/bin-2019/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/working_dir_20e03893-6bc8-4db8-bb56-f8ab022cbf74/bin-2019/utaipan/config/TaipanReach.xml -i ../../sv-benchmarks/c/float-newlib/float_req_bl_0620a_true-unreach-call.c -s /tmp/vcloud-vcloud-master/worker/working_dir_20e03893-6bc8-4db8-bb56-f8ab022cbf74/bin-2019/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/working_dir_20e03893-6bc8-4db8-bb56-f8ab022cbf74/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 bc7b929d20445456da87d92c4566355380c50982 ................................................................................................................................................................................................................................................................................................................................................................ 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_20e03893-6bc8-4db8-bb56-f8ab022cbf74/bin-2019/utaipan/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/working_dir_20e03893-6bc8-4db8-bb56-f8ab022cbf74/bin-2019/utaipan/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/working_dir_20e03893-6bc8-4db8-bb56-f8ab022cbf74/bin-2019/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/working_dir_20e03893-6bc8-4db8-bb56-f8ab022cbf74/bin-2019/utaipan/config/TaipanReach.xml -i ../../sv-benchmarks/c/float-newlib/float_req_bl_0620a_true-unreach-call.c -s /tmp/vcloud-vcloud-master/worker/working_dir_20e03893-6bc8-4db8-bb56-f8ab022cbf74/bin-2019/utaipan/config/svcomp-Reach-32bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/working_dir_20e03893-6bc8-4db8-bb56-f8ab022cbf74/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 bc7b929d20445456da87d92c4566355380c50982 ................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................ Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.1.23-5842f4b [2018-11-18 08:49:01,371 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-11-18 08:49:01,372 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-11-18 08:49:01,378 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-11-18 08:49:01,378 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-11-18 08:49:01,379 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-11-18 08:49:01,380 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-11-18 08:49:01,381 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-11-18 08:49:01,382 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-11-18 08:49:01,383 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-11-18 08:49:01,383 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-11-18 08:49:01,384 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-11-18 08:49:01,384 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-11-18 08:49:01,385 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-11-18 08:49:01,386 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-11-18 08:49:01,386 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-11-18 08:49:01,387 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-11-18 08:49:01,388 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-11-18 08:49:01,389 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-11-18 08:49:01,390 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-11-18 08:49:01,391 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-11-18 08:49:01,392 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-11-18 08:49:01,393 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-11-18 08:49:01,393 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-11-18 08:49:01,394 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-11-18 08:49:01,394 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-11-18 08:49:01,395 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-11-18 08:49:01,395 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-11-18 08:49:01,396 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-11-18 08:49:01,397 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-11-18 08:49:01,397 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-11-18 08:49:01,397 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-11-18 08:49:01,398 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-11-18 08:49:01,398 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-11-18 08:49:01,398 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-11-18 08:49:01,399 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-11-18 08:49:01,399 INFO L98 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/working_dir_20e03893-6bc8-4db8-bb56-f8ab022cbf74/bin-2019/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf [2018-11-18 08:49:01,409 INFO L110 SettingsManager]: Loading preferences was successful [2018-11-18 08:49:01,409 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-11-18 08:49:01,409 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-11-18 08:49:01,410 INFO L133 SettingsManager]: * User list type=DISABLED [2018-11-18 08:49:01,410 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-11-18 08:49:01,410 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-11-18 08:49:01,410 INFO L133 SettingsManager]: * Explicit value domain=true [2018-11-18 08:49:01,410 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-11-18 08:49:01,410 INFO L133 SettingsManager]: * Octagon Domain=false [2018-11-18 08:49:01,410 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-11-18 08:49:01,411 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-11-18 08:49:01,411 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-11-18 08:49:01,411 INFO L133 SettingsManager]: * Interval Domain=false [2018-11-18 08:49:01,411 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-11-18 08:49:01,412 INFO L133 SettingsManager]: * sizeof long=4 [2018-11-18 08:49:01,412 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-11-18 08:49:01,412 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-11-18 08:49:01,412 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-11-18 08:49:01,412 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-11-18 08:49:01,412 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-11-18 08:49:01,412 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-11-18 08:49:01,413 INFO L133 SettingsManager]: * sizeof long double=12 [2018-11-18 08:49:01,413 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-11-18 08:49:01,413 INFO L133 SettingsManager]: * Use constant arrays=true [2018-11-18 08:49:01,413 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-11-18 08:49:01,413 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-11-18 08:49:01,413 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-11-18 08:49:01,413 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-11-18 08:49:01,414 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-11-18 08:49:01,414 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-11-18 08:49:01,414 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-11-18 08:49:01,414 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-11-18 08:49:01,414 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-11-18 08:49:01,414 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-11-18 08:49:01,415 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-11-18 08:49:01,415 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-11-18 08:49:01,415 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-11-18 08:49:01,415 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_20e03893-6bc8-4db8-bb56-f8ab022cbf74/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 -> bc7b929d20445456da87d92c4566355380c50982 [2018-11-18 08:49:01,436 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-11-18 08:49:01,443 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-11-18 08:49:01,445 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-11-18 08:49:01,446 INFO L271 PluginConnector]: Initializing CDTParser... [2018-11-18 08:49:01,446 INFO L276 PluginConnector]: CDTParser initialized [2018-11-18 08:49:01,447 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/working_dir_20e03893-6bc8-4db8-bb56-f8ab022cbf74/bin-2019/utaipan/../../sv-benchmarks/c/float-newlib/float_req_bl_0620a_true-unreach-call.c [2018-11-18 08:49:01,481 INFO L221 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_20e03893-6bc8-4db8-bb56-f8ab022cbf74/bin-2019/utaipan/data/1a128cd69/39a843d5e9944f649602759ef5fb5914/FLAGbf46ad6e6 [2018-11-18 08:49:01,798 INFO L307 CDTParser]: Found 1 translation units. [2018-11-18 08:49:01,798 INFO L161 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/working_dir_20e03893-6bc8-4db8-bb56-f8ab022cbf74/sv-benchmarks/c/float-newlib/float_req_bl_0620a_true-unreach-call.c [2018-11-18 08:49:01,803 INFO L355 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_20e03893-6bc8-4db8-bb56-f8ab022cbf74/bin-2019/utaipan/data/1a128cd69/39a843d5e9944f649602759ef5fb5914/FLAGbf46ad6e6 [2018-11-18 08:49:01,812 INFO L363 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/working_dir_20e03893-6bc8-4db8-bb56-f8ab022cbf74/bin-2019/utaipan/data/1a128cd69/39a843d5e9944f649602759ef5fb5914 [2018-11-18 08:49:01,815 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-11-18 08:49:01,816 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2018-11-18 08:49:01,817 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-11-18 08:49:01,817 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-11-18 08:49:01,819 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-11-18 08:49:01,820 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 08:49:01" (1/1) ... [2018-11-18 08:49:01,822 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@e013f19 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:49:01, skipping insertion in model container [2018-11-18 08:49:01,822 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 08:49:01" (1/1) ... [2018-11-18 08:49:01,830 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-11-18 08:49:01,850 INFO L176 MainTranslator]: Built tables and reachable declarations [2018-11-18 08:49:01,991 INFO L201 PostProcessor]: Analyzing one entry point: main [2018-11-18 08:49:01,997 INFO L191 MainTranslator]: Completed pre-run [2018-11-18 08:49:02,019 INFO L201 PostProcessor]: Analyzing one entry point: main [2018-11-18 08:49:02,032 INFO L195 MainTranslator]: Completed translation [2018-11-18 08:49:02,033 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:49:02 WrapperNode [2018-11-18 08:49:02,033 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-11-18 08:49:02,033 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-11-18 08:49:02,033 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-11-18 08:49:02,033 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-11-18 08:49:02,038 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:49:02" (1/1) ... [2018-11-18 08:49:02,079 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:49:02" (1/1) ... [2018-11-18 08:49:02,084 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-11-18 08:49:02,084 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-11-18 08:49:02,084 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-11-18 08:49:02,084 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-11-18 08:49:02,090 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:49:02" (1/1) ... [2018-11-18 08:49:02,090 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:49:02" (1/1) ... [2018-11-18 08:49:02,093 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:49:02" (1/1) ... [2018-11-18 08:49:02,093 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:49:02" (1/1) ... [2018-11-18 08:49:02,106 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:49:02" (1/1) ... [2018-11-18 08:49:02,111 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:49:02" (1/1) ... [2018-11-18 08:49:02,112 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:49:02" (1/1) ... [2018-11-18 08:49:02,114 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-11-18 08:49:02,115 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-11-18 08:49:02,115 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-11-18 08:49:02,115 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-11-18 08:49:02,116 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:49:02" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_20e03893-6bc8-4db8-bb56-f8ab022cbf74/bin-2019/utaipan/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-11-18 08:49:02,146 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-11-18 08:49:02,146 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-11-18 08:49:02,146 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~real [2018-11-18 08:49:02,146 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2018-11-18 08:49:02,146 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2018-11-18 08:49:02,146 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-11-18 08:49:02,147 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-11-18 08:49:02,147 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2018-11-18 08:49:02,147 INFO L130 BoogieDeclarations]: Found specification of procedure fabs_float [2018-11-18 08:49:02,147 INFO L138 BoogieDeclarations]: Found implementation of procedure fabs_float [2018-11-18 08:49:02,147 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.alloc [2018-11-18 08:49:02,147 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-11-18 08:49:02,147 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-11-18 08:49:02,147 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2018-11-18 08:49:02,147 INFO L130 BoogieDeclarations]: Found specification of procedure __signbit_float [2018-11-18 08:49:02,147 INFO L138 BoogieDeclarations]: Found implementation of procedure __signbit_float [2018-11-18 08:49:02,147 INFO L130 BoogieDeclarations]: Found specification of procedure atan_float [2018-11-18 08:49:02,147 INFO L138 BoogieDeclarations]: Found implementation of procedure atan_float [2018-11-18 08:49:02,147 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2018-11-18 08:49:02,415 INFO L278 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-11-18 08:49:02,415 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 08:49:02 BoogieIcfgContainer [2018-11-18 08:49:02,415 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-11-18 08:49:02,416 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-11-18 08:49:02,416 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-11-18 08:49:02,418 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-11-18 08:49:02,418 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.11 08:49:01" (1/3) ... [2018-11-18 08:49:02,418 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2da323b3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 08:49:02, skipping insertion in model container [2018-11-18 08:49:02,418 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:49:02" (2/3) ... [2018-11-18 08:49:02,419 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2da323b3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 08:49:02, skipping insertion in model container [2018-11-18 08:49:02,419 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 08:49:02" (3/3) ... [2018-11-18 08:49:02,420 INFO L112 eAbstractionObserver]: Analyzing ICFG float_req_bl_0620a_true-unreach-call.c [2018-11-18 08:49:02,425 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-11-18 08:49:02,429 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-11-18 08:49:02,438 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-11-18 08:49:02,458 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-11-18 08:49:02,458 INFO L383 AbstractCegarLoop]: Hoare is true [2018-11-18 08:49:02,458 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-11-18 08:49:02,458 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-11-18 08:49:02,458 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-11-18 08:49:02,458 INFO L387 AbstractCegarLoop]: Difference is false [2018-11-18 08:49:02,458 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-11-18 08:49:02,458 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-11-18 08:49:02,469 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states. [2018-11-18 08:49:02,473 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2018-11-18 08:49:02,473 INFO L367 BasicCegarLoop]: Found error trace [2018-11-18 08:49:02,474 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-18 08:49:02,475 INFO L423 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-18 08:49:02,478 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 08:49:02,478 INFO L82 PathProgramCache]: Analyzing trace with hash 288023153, now seen corresponding path program 1 times [2018-11-18 08:49:02,480 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-18 08:49:02,514 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 08:49:02,515 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 08:49:02,515 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 08:49:02,515 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-18 08:49:02,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 08:49:02,588 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-18 08:49:02,589 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-18 08:49:02,589 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-11-18 08:49:02,589 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-18 08:49:02,592 INFO L459 AbstractCegarLoop]: Interpolant automaton has 2 states [2018-11-18 08:49:02,600 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2018-11-18 08:49:02,600 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-11-18 08:49:02,601 INFO L87 Difference]: Start difference. First operand 54 states. Second operand 2 states. [2018-11-18 08:49:02,617 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-18 08:49:02,617 INFO L93 Difference]: Finished difference Result 100 states and 142 transitions. [2018-11-18 08:49:02,618 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2018-11-18 08:49:02,618 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 18 [2018-11-18 08:49:02,619 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-18 08:49:02,625 INFO L225 Difference]: With dead ends: 100 [2018-11-18 08:49:02,625 INFO L226 Difference]: Without dead ends: 50 [2018-11-18 08:49:02,628 INFO L604 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 [2018-11-18 08:49:02,637 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50 states. [2018-11-18 08:49:02,649 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50 to 50. [2018-11-18 08:49:02,650 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 50 states. [2018-11-18 08:49:02,651 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 61 transitions. [2018-11-18 08:49:02,652 INFO L78 Accepts]: Start accepts. Automaton has 50 states and 61 transitions. Word has length 18 [2018-11-18 08:49:02,653 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-18 08:49:02,653 INFO L480 AbstractCegarLoop]: Abstraction has 50 states and 61 transitions. [2018-11-18 08:49:02,653 INFO L481 AbstractCegarLoop]: Interpolant automaton has 2 states. [2018-11-18 08:49:02,653 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 61 transitions. [2018-11-18 08:49:02,653 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2018-11-18 08:49:02,653 INFO L367 BasicCegarLoop]: Found error trace [2018-11-18 08:49:02,654 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-18 08:49:02,654 INFO L423 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-18 08:49:02,654 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 08:49:02,654 INFO L82 PathProgramCache]: Analyzing trace with hash -1700274504, now seen corresponding path program 1 times [2018-11-18 08:49:02,654 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-18 08:49:02,655 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 08:49:02,655 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 08:49:02,655 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 08:49:02,655 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-18 08:49:02,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-18 08:49:02,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-18 08:49:02,728 INFO L442 BasicCegarLoop]: Counterexample might be feasible [2018-11-18 08:49:02,747 WARN L1239 BoogieBacktranslator]: Unfinished Backtranslation: IntegerLiteral 6442450967 could not be translated for associated CType ARRAY#_4_~FLOAT# [2018-11-18 08:49:02,748 WARN L1239 BoogieBacktranslator]: Unfinished Backtranslation: IntegerLiteral 6442450951 could not be translated for associated CType ARRAY#_11_~FLOAT# [2018-11-18 08:49:02,748 WARN L1239 BoogieBacktranslator]: Unfinished Backtranslation: IntegerLiteral 6442450953 could not be translated for associated CType ARRAY#_4_~FLOAT# [2018-11-18 08:49:02,748 WARN L1239 BoogieBacktranslator]: Unfinished Backtranslation: IntegerLiteral 6442450947 could not be translated for associated CType ARRAY#_4_~FLOAT# [2018-11-18 08:49:02,748 WARN L1239 BoogieBacktranslator]: Unfinished Backtranslation: IntegerLiteral 6442450955 could not be translated for associated CType ARRAY#_11_~FLOAT# [2018-11-18 08:49:02,748 WARN L1239 BoogieBacktranslator]: Unfinished Backtranslation: IntegerLiteral 6442450959 could not be translated for associated CType ARRAY#_4_~FLOAT# [2018-11-18 08:49:02,756 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 18.11 08:49:02 BoogieIcfgContainer [2018-11-18 08:49:02,756 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-11-18 08:49:02,756 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2018-11-18 08:49:02,756 INFO L271 PluginConnector]: Initializing Witness Printer... [2018-11-18 08:49:02,756 INFO L276 PluginConnector]: Witness Printer initialized [2018-11-18 08:49:02,757 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 08:49:02" (3/4) ... [2018-11-18 08:49:02,760 INFO L147 WitnessPrinter]: No result that supports witness generation found [2018-11-18 08:49:02,760 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2018-11-18 08:49:02,760 INFO L168 Benchmark]: Toolchain (without parser) took 945.33 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 92.8 MB). Free memory was 958.1 MB in the beginning and 1.0 GB in the end (delta: -58.4 MB). Peak memory consumption was 34.4 MB. Max. memory is 11.5 GB. [2018-11-18 08:49:02,762 INFO L168 Benchmark]: CDTParser took 0.12 ms. Allocated memory is still 1.0 GB. Free memory is still 985.4 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-11-18 08:49:02,762 INFO L168 Benchmark]: CACSL2BoogieTranslator took 216.26 ms. Allocated memory is still 1.0 GB. Free memory was 958.1 MB in the beginning and 941.9 MB in the end (delta: 16.2 MB). Peak memory consumption was 16.2 MB. Max. memory is 11.5 GB. [2018-11-18 08:49:02,763 INFO L168 Benchmark]: Boogie Procedure Inliner took 50.89 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 92.8 MB). Free memory was 941.9 MB in the beginning and 1.1 GB in the end (delta: -144.9 MB). Peak memory consumption was 14.6 MB. Max. memory is 11.5 GB. [2018-11-18 08:49:02,763 INFO L168 Benchmark]: Boogie Preprocessor took 30.53 ms. Allocated memory is still 1.1 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. [2018-11-18 08:49:02,763 INFO L168 Benchmark]: RCFGBuilder took 300.41 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: 36.8 MB). Peak memory consumption was 36.8 MB. Max. memory is 11.5 GB. [2018-11-18 08:49:02,764 INFO L168 Benchmark]: TraceAbstraction took 340.02 ms. Allocated memory is still 1.1 GB. Free memory was 1.0 GB in the beginning and 1.0 GB in the end (delta: 29.9 MB). Peak memory consumption was 29.9 MB. Max. memory is 11.5 GB. [2018-11-18 08:49:02,764 INFO L168 Benchmark]: Witness Printer took 3.74 ms. Allocated memory is still 1.1 GB. Free memory was 1.0 GB in the beginning and 1.0 GB in the end (delta: 3.6 MB). Peak memory consumption was 3.6 MB. Max. memory is 11.5 GB. [2018-11-18 08:49:02,768 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 985.4 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 216.26 ms. Allocated memory is still 1.0 GB. Free memory was 958.1 MB in the beginning and 941.9 MB in the end (delta: 16.2 MB). Peak memory consumption was 16.2 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 50.89 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 92.8 MB). Free memory was 941.9 MB in the beginning and 1.1 GB in the end (delta: -144.9 MB). Peak memory consumption was 14.6 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 30.53 ms. Allocated memory is still 1.1 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. * RCFGBuilder took 300.41 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: 36.8 MB). Peak memory consumption was 36.8 MB. Max. memory is 11.5 GB. * TraceAbstraction took 340.02 ms. Allocated memory is still 1.1 GB. Free memory was 1.0 GB in the beginning and 1.0 GB in the end (delta: 29.9 MB). Peak memory consumption was 29.9 MB. Max. memory is 11.5 GB. * Witness Printer took 3.74 ms. Allocated memory is still 1.1 GB. Free memory was 1.0 GB in the beginning and 1.0 GB in the end (delta: 3.6 MB). Peak memory consumption was 3.6 MB. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IntegerLiteral 6442450967 could not be translated for associated CType ARRAY#_4_~FLOAT# - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IntegerLiteral 6442450951 could not be translated for associated CType ARRAY#_11_~FLOAT# - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IntegerLiteral 6442450953 could not be translated for associated CType ARRAY#_4_~FLOAT# - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IntegerLiteral 6442450947 could not be translated for associated CType ARRAY#_4_~FLOAT# - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IntegerLiteral 6442450955 could not be translated for associated CType ARRAY#_11_~FLOAT# - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IntegerLiteral 6442450959 could not be translated for associated CType ARRAY#_4_~FLOAT# * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 142]: Unable to prove that call of __VERIFIER_error() unreachable Unable to prove that call of __VERIFIER_error() unreachable Reason: overapproximation of someBinaryFLOATComparisonOperation at line 141, overapproximation of someUnaryDOUBLEoperation at line 44, overapproximation of bitwiseAnd at line 62, overapproximation of someBinaryArithmeticFLOAToperation at line 65. Possible FailurePath: [L12] static const float huge_floor = 1.0e30; [L29-L34] FCALL static const float atanhi_atan[] = { 4.6364760399e-01, 7.8539812565e-01, 9.8279368877e-01, 1.5707962513e+00, }; [L36-L41] FCALL static const float atanlo_atan[] = { 5.0121582440e-09, 3.7748947079e-08, 3.4473217170e-08, 7.5497894159e-08, }; [L43-L47] FCALL static const float aT_atan[] = { 3.3333334327e-01, -2.0000000298e-01, 1.4285714924e-01, -1.1111110449e-01, 9.0908870101e-02, -7.6918758452e-02, 6.6610731184e-02, -5.8335702866e-02, 4.9768779427e-02, -3.6531571299e-02, 1.6285819933e-02, }; [L49-L51] static const float one_atan = 1.0, huge_atan = 1.0e30, pi_o_4 = 7.8539818525e-01, pi_o_2 = 1.5707963705e+00, pi = 3.1415927410e+00; VAL [\old(aT_atan)=null, \old(aT_atan)=null, \old(atanhi_atan)=null, \old(atanhi_atan)=null, \old(atanlo_atan)=null, \old(atanlo_atan)=null, \old(huge_atan)=6442450965, \old(huge_floor)=6442450960, \old(one_atan)=6442450956, \old(pi)=6442450961, \old(pi_o_2)=6442450944, \old(pi_o_4)=6442450958, aT_atan={6442450952:0}, atanhi_atan={6442450954:0}, atanlo_atan={6442450945:0}, huge_atan=1000000000000000000000000000000, huge_floor=1000000000000000000000000000000, one_atan=1, pi=3141592741/1000000000, pi_o_2=3141592741/2000000000, pi_o_4=3141592741/4000000000] [L137] float x = 0.0f; VAL [aT_atan={6442450952:0}, atanhi_atan={6442450954:0}, atanlo_atan={6442450945:0}, huge_atan=1000000000000000000000000000000, huge_floor=1000000000000000000000000000000, one_atan=1, pi=3141592741/1000000000, pi_o_2=3141592741/2000000000, pi_o_4=3141592741/4000000000, x=0] [L138] CALL, EXPR atan_float(x) VAL [\old(x)=0, aT_atan={6442450952:0}, atanhi_atan={6442450954:0}, atanlo_atan={6442450945:0}, huge_atan=1000000000000000000000000000000, huge_floor=1000000000000000000000000000000, one_atan=1, pi=3141592741/1000000000, pi_o_2=3141592741/2000000000, pi_o_4=3141592741/4000000000] [L54] float w, s1, s2, z; [L55] __int32_t ix, hx, id; VAL [\old(x)=0, aT_atan={6442450952:0}, atanhi_atan={6442450954:0}, atanlo_atan={6442450945:0}, huge_atan=1000000000000000000000000000000, huge_floor=1000000000000000000000000000000, one_atan=1, pi=3141592741/1000000000, pi_o_2=3141592741/2000000000, pi_o_4=3141592741/4000000000, x=0] [L58] FCALL ieee_float_shape_type gf_u; [L59] FCALL gf_u.value = (x) [L60] EXPR, FCALL gf_u.word [L60] (hx) = gf_u.word [L61] COND FALSE !(0) VAL [\old(x)=0, aT_atan={6442450952:0}, atanhi_atan={6442450954:0}, atanlo_atan={6442450945:0}, huge_atan=1000000000000000000000000000000, huge_floor=1000000000000000000000000000000, hx=2147483647, one_atan=1, pi=3141592741/1000000000, pi_o_2=3141592741/2000000000, pi_o_4=3141592741/4000000000, x=0] [L62] ix = hx & 0x7fffffff VAL [\old(x)=0, aT_atan={6442450952:0}, atanhi_atan={6442450954:0}, atanlo_atan={6442450945:0}, huge_atan=1000000000000000000000000000000, huge_floor=1000000000000000000000000000000, hx=2147483647, one_atan=1, pi=3141592741/1000000000, pi_o_2=3141592741/2000000000, pi_o_4=3141592741/4000000000, x=0] [L63] COND TRUE ix >= 0x50800000 VAL [\old(x)=0, aT_atan={6442450952:0}, atanhi_atan={6442450954:0}, atanlo_atan={6442450945:0}, huge_atan=1000000000000000000000000000000, huge_floor=1000000000000000000000000000000, hx=2147483647, ix=2139095041, one_atan=1, pi=3141592741/1000000000, pi_o_2=3141592741/2000000000, pi_o_4=3141592741/4000000000, x=0] [L64] COND TRUE ((ix) > 0x7f800000L) [L65] RET return x + x; VAL [\old(x)=0, aT_atan={6442450952:0}, atanhi_atan={6442450954:0}, atanlo_atan={6442450945:0}, huge_atan=1000000000000000000000000000000, huge_floor=1000000000000000000000000000000, hx=2147483647, ix=2139095041, one_atan=1, pi=3141592741/1000000000, pi_o_2=3141592741/2000000000, pi_o_4=3141592741/4000000000, x=0] [L138] EXPR atan_float(x) VAL [aT_atan={6442450952:0}, atan_float(x)=6442450950, atanhi_atan={6442450954:0}, atanlo_atan={6442450945:0}, huge_atan=1000000000000000000000000000000, huge_floor=1000000000000000000000000000000, one_atan=1, pi=3141592741/1000000000, pi_o_2=3141592741/2000000000, pi_o_4=3141592741/4000000000, x=0] [L138] float res = atan_float(x); [L141] EXPR res == 0.0f && __signbit_float(res) == 0 VAL [aT_atan={6442450952:0}, atanhi_atan={6442450954:0}, atanlo_atan={6442450945:0}, huge_atan=1000000000000000000000000000000, huge_floor=1000000000000000000000000000000, one_atan=1, pi=3141592741/1000000000, pi_o_2=3141592741/2000000000, pi_o_4=3141592741/4000000000, res=6442450950, res == 0.0f && __signbit_float(res) == 0=0, x=0] [L141] COND TRUE !(res == 0.0f && __signbit_float(res) == 0) [L142] __VERIFIER_error() VAL [aT_atan={6442450952:0}, atanhi_atan={6442450954:0}, atanlo_atan={6442450945:0}, huge_atan=1000000000000000000000000000000, huge_floor=1000000000000000000000000000000, one_atan=1, pi=3141592741/1000000000, pi_o_2=3141592741/2000000000, pi_o_4=3141592741/4000000000, res=6442450950, x=0] - StatisticsResult: Ultimate Automizer benchmark data CFG has 6 procedures, 54 locations, 1 error locations. UNSAFE Result, 0.3s OverallTime, 2 OverallIterations, 1 TraceHistogramMax, 0.0s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 65 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=54occurred 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 0.1.23-5842f4b [2018-11-18 08:49:04,170 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-11-18 08:49:04,171 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-11-18 08:49:04,178 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-11-18 08:49:04,178 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-11-18 08:49:04,178 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-11-18 08:49:04,179 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-11-18 08:49:04,180 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-11-18 08:49:04,181 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-11-18 08:49:04,182 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-11-18 08:49:04,183 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-11-18 08:49:04,183 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-11-18 08:49:04,184 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-11-18 08:49:04,184 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-11-18 08:49:04,185 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-11-18 08:49:04,186 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-11-18 08:49:04,186 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-11-18 08:49:04,187 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-11-18 08:49:04,189 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-11-18 08:49:04,191 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-11-18 08:49:04,191 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-11-18 08:49:04,192 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-11-18 08:49:04,194 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-11-18 08:49:04,194 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-11-18 08:49:04,194 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-11-18 08:49:04,195 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-11-18 08:49:04,196 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-11-18 08:49:04,196 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-11-18 08:49:04,197 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-11-18 08:49:04,198 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-11-18 08:49:04,198 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-11-18 08:49:04,199 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-11-18 08:49:04,199 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-11-18 08:49:04,199 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-11-18 08:49:04,199 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-11-18 08:49:04,200 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-11-18 08:49:04,200 INFO L98 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/working_dir_20e03893-6bc8-4db8-bb56-f8ab022cbf74/bin-2019/utaipan/config/svcomp-Reach-32bit-Taipan_Bitvector.epf [2018-11-18 08:49:04,211 INFO L110 SettingsManager]: Loading preferences was successful [2018-11-18 08:49:04,211 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-11-18 08:49:04,212 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-11-18 08:49:04,212 INFO L133 SettingsManager]: * User list type=DISABLED [2018-11-18 08:49:04,212 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-11-18 08:49:04,213 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-11-18 08:49:04,213 INFO L133 SettingsManager]: * Explicit value domain=true [2018-11-18 08:49:04,213 INFO L133 SettingsManager]: * Octagon Domain=false [2018-11-18 08:49:04,213 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-11-18 08:49:04,213 INFO L133 SettingsManager]: * Interval Domain=false [2018-11-18 08:49:04,214 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-11-18 08:49:04,214 INFO L133 SettingsManager]: * sizeof long=4 [2018-11-18 08:49:04,214 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-11-18 08:49:04,214 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-11-18 08:49:04,214 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-11-18 08:49:04,214 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-11-18 08:49:04,214 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-11-18 08:49:04,215 INFO L133 SettingsManager]: * Use bitvectors instead of ints=true [2018-11-18 08:49:04,215 INFO L133 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2018-11-18 08:49:04,215 INFO L133 SettingsManager]: * sizeof long double=12 [2018-11-18 08:49:04,215 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-11-18 08:49:04,215 INFO L133 SettingsManager]: * Use constant arrays=true [2018-11-18 08:49:04,215 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-11-18 08:49:04,215 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-11-18 08:49:04,215 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-11-18 08:49:04,215 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-11-18 08:49:04,216 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-11-18 08:49:04,216 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-11-18 08:49:04,216 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-11-18 08:49:04,216 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-11-18 08:49:04,216 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-11-18 08:49:04,216 INFO L133 SettingsManager]: * Trace refinement strategy=WALRUS [2018-11-18 08:49:04,216 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-11-18 08:49:04,216 INFO L133 SettingsManager]: * Command for external solver=cvc4nyu --tear-down-incremental --rewrite-divk --print-success --lang smt [2018-11-18 08:49:04,216 INFO L133 SettingsManager]: * Logic for external solver=AUFBV [2018-11-18 08:49:04,216 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_20e03893-6bc8-4db8-bb56-f8ab022cbf74/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 -> bc7b929d20445456da87d92c4566355380c50982 [2018-11-18 08:49:04,244 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-11-18 08:49:04,251 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-11-18 08:49:04,253 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-11-18 08:49:04,254 INFO L271 PluginConnector]: Initializing CDTParser... [2018-11-18 08:49:04,254 INFO L276 PluginConnector]: CDTParser initialized [2018-11-18 08:49:04,255 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/working_dir_20e03893-6bc8-4db8-bb56-f8ab022cbf74/bin-2019/utaipan/../../sv-benchmarks/c/float-newlib/float_req_bl_0620a_true-unreach-call.c [2018-11-18 08:49:04,289 INFO L221 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_20e03893-6bc8-4db8-bb56-f8ab022cbf74/bin-2019/utaipan/data/e1e25e485/8f8a5bc469c140fbae2d42dcc226a8f8/FLAG41fb0c11a [2018-11-18 08:49:04,680 INFO L307 CDTParser]: Found 1 translation units. [2018-11-18 08:49:04,681 INFO L161 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/working_dir_20e03893-6bc8-4db8-bb56-f8ab022cbf74/sv-benchmarks/c/float-newlib/float_req_bl_0620a_true-unreach-call.c [2018-11-18 08:49:04,685 INFO L355 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_20e03893-6bc8-4db8-bb56-f8ab022cbf74/bin-2019/utaipan/data/e1e25e485/8f8a5bc469c140fbae2d42dcc226a8f8/FLAG41fb0c11a [2018-11-18 08:49:04,693 INFO L363 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/working_dir_20e03893-6bc8-4db8-bb56-f8ab022cbf74/bin-2019/utaipan/data/e1e25e485/8f8a5bc469c140fbae2d42dcc226a8f8 [2018-11-18 08:49:04,695 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-11-18 08:49:04,696 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2018-11-18 08:49:04,697 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-11-18 08:49:04,697 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-11-18 08:49:04,699 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-11-18 08:49:04,699 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 08:49:04" (1/1) ... [2018-11-18 08:49:04,702 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6bcafc49 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:49:04, skipping insertion in model container [2018-11-18 08:49:04,702 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 08:49:04" (1/1) ... [2018-11-18 08:49:04,707 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-11-18 08:49:04,723 INFO L176 MainTranslator]: Built tables and reachable declarations [2018-11-18 08:49:04,862 INFO L201 PostProcessor]: Analyzing one entry point: main [2018-11-18 08:49:04,870 INFO L191 MainTranslator]: Completed pre-run [2018-11-18 08:49:04,904 INFO L201 PostProcessor]: Analyzing one entry point: main [2018-11-18 08:49:04,924 INFO L195 MainTranslator]: Completed translation [2018-11-18 08:49:04,924 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:49:04 WrapperNode [2018-11-18 08:49:04,925 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-11-18 08:49:04,925 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-11-18 08:49:04,925 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-11-18 08:49:04,925 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-11-18 08:49:04,930 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:49:04" (1/1) ... [2018-11-18 08:49:04,989 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:49:04" (1/1) ... [2018-11-18 08:49:04,995 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-11-18 08:49:04,995 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-11-18 08:49:04,996 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-11-18 08:49:04,996 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-11-18 08:49:05,001 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:49:04" (1/1) ... [2018-11-18 08:49:05,002 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:49:04" (1/1) ... [2018-11-18 08:49:05,004 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:49:04" (1/1) ... [2018-11-18 08:49:05,004 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:49:04" (1/1) ... [2018-11-18 08:49:05,017 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:49:04" (1/1) ... [2018-11-18 08:49:05,022 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:49:04" (1/1) ... [2018-11-18 08:49:05,025 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:49:04" (1/1) ... [2018-11-18 08:49:05,028 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-11-18 08:49:05,029 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-11-18 08:49:05,029 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-11-18 08:49:05,029 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-11-18 08:49:05,030 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:49:04" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_20e03893-6bc8-4db8-bb56-f8ab022cbf74/bin-2019/utaipan/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-11-18 08:49:05,065 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-11-18 08:49:05,065 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-11-18 08:49:05,065 INFO L130 BoogieDeclarations]: Found specification of procedure read~intFLOATTYPE4 [2018-11-18 08:49:05,066 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-11-18 08:49:05,066 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-11-18 08:49:05,066 INFO L130 BoogieDeclarations]: Found specification of procedure fabs_float [2018-11-18 08:49:05,066 INFO L138 BoogieDeclarations]: Found implementation of procedure fabs_float [2018-11-18 08:49:05,066 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.alloc [2018-11-18 08:49:05,066 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2018-11-18 08:49:05,066 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intFLOATTYPE4 [2018-11-18 08:49:05,066 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-11-18 08:49:05,067 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-11-18 08:49:05,067 INFO L130 BoogieDeclarations]: Found specification of procedure write~intFLOATTYPE4 [2018-11-18 08:49:05,067 INFO L130 BoogieDeclarations]: Found specification of procedure __signbit_float [2018-11-18 08:49:05,067 INFO L138 BoogieDeclarations]: Found implementation of procedure __signbit_float [2018-11-18 08:49:05,067 INFO L130 BoogieDeclarations]: Found specification of procedure atan_float [2018-11-18 08:49:05,067 INFO L138 BoogieDeclarations]: Found implementation of procedure atan_float [2018-11-18 08:49:05,067 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2018-11-18 08:49:05,067 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2018-11-18 08:49:05,588 WARN L317 ript$VariableManager]: TermVariabe |q#valueAsBitvector| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-11-18 08:49:05,624 WARN L317 ript$VariableManager]: TermVariabe |q#valueAsBitvector| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-11-18 08:49:12,422 INFO L278 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-11-18 08:49:12,422 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 08:49:12 BoogieIcfgContainer [2018-11-18 08:49:12,422 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-11-18 08:49:12,423 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-11-18 08:49:12,423 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-11-18 08:49:12,425 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-11-18 08:49:12,425 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.11 08:49:04" (1/3) ... [2018-11-18 08:49:12,425 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@53d72edd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 08:49:12, skipping insertion in model container [2018-11-18 08:49:12,425 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:49:04" (2/3) ... [2018-11-18 08:49:12,426 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@53d72edd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 08:49:12, skipping insertion in model container [2018-11-18 08:49:12,426 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 08:49:12" (3/3) ... [2018-11-18 08:49:12,427 INFO L112 eAbstractionObserver]: Analyzing ICFG float_req_bl_0620a_true-unreach-call.c [2018-11-18 08:49:12,432 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-11-18 08:49:12,436 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-11-18 08:49:12,444 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-11-18 08:49:12,462 INFO L133 ementStrategyFactory]: Using default assertion order modulation [2018-11-18 08:49:12,463 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-11-18 08:49:12,463 INFO L383 AbstractCegarLoop]: Hoare is true [2018-11-18 08:49:12,463 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-11-18 08:49:12,463 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-11-18 08:49:12,463 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-11-18 08:49:12,464 INFO L387 AbstractCegarLoop]: Difference is false [2018-11-18 08:49:12,464 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-11-18 08:49:12,464 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-11-18 08:49:12,475 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states. [2018-11-18 08:49:12,479 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2018-11-18 08:49:12,479 INFO L367 BasicCegarLoop]: Found error trace [2018-11-18 08:49:12,479 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-18 08:49:12,481 INFO L423 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-18 08:49:12,484 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 08:49:12,484 INFO L82 PathProgramCache]: Analyzing trace with hash 288023153, now seen corresponding path program 1 times [2018-11-18 08:49:12,486 INFO L223 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-11-18 08:49:12,487 INFO L69 tionRefinementEngine]: Using refinement strategy WalrusRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_20e03893-6bc8-4db8-bb56-f8ab022cbf74/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 [2018-11-18 08:49:12,490 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 08:49:12,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 08:49:12,628 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-18 08:49:12,639 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-18 08:49:12,640 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-11-18 08:49:12,650 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-18 08:49:12,650 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-11-18 08:49:12,653 INFO L459 AbstractCegarLoop]: Interpolant automaton has 2 states [2018-11-18 08:49:12,661 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2018-11-18 08:49:12,661 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-11-18 08:49:12,663 INFO L87 Difference]: Start difference. First operand 54 states. Second operand 2 states. [2018-11-18 08:49:12,680 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-18 08:49:12,680 INFO L93 Difference]: Finished difference Result 100 states and 142 transitions. [2018-11-18 08:49:12,680 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2018-11-18 08:49:12,681 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 18 [2018-11-18 08:49:12,681 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-18 08:49:12,688 INFO L225 Difference]: With dead ends: 100 [2018-11-18 08:49:12,688 INFO L226 Difference]: Without dead ends: 50 [2018-11-18 08:49:12,690 INFO L604 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 [2018-11-18 08:49:12,700 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50 states. [2018-11-18 08:49:12,712 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50 to 50. [2018-11-18 08:49:12,713 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 50 states. [2018-11-18 08:49:12,714 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 61 transitions. [2018-11-18 08:49:12,715 INFO L78 Accepts]: Start accepts. Automaton has 50 states and 61 transitions. Word has length 18 [2018-11-18 08:49:12,715 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-18 08:49:12,715 INFO L480 AbstractCegarLoop]: Abstraction has 50 states and 61 transitions. [2018-11-18 08:49:12,716 INFO L481 AbstractCegarLoop]: Interpolant automaton has 2 states. [2018-11-18 08:49:12,716 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 61 transitions. [2018-11-18 08:49:12,716 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2018-11-18 08:49:12,716 INFO L367 BasicCegarLoop]: Found error trace [2018-11-18 08:49:12,717 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-18 08:49:12,717 INFO L423 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-18 08:49:12,717 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 08:49:12,717 INFO L82 PathProgramCache]: Analyzing trace with hash -1700274504, now seen corresponding path program 1 times [2018-11-18 08:49:12,718 INFO L223 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-11-18 08:49:12,718 INFO L69 tionRefinementEngine]: Using refinement strategy WalrusRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_20e03893-6bc8-4db8-bb56-f8ab022cbf74/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 [2018-11-18 08:49:12,723 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 08:49:12,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 08:49:12,823 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-18 08:49:12,917 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-18 08:49:12,917 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-11-18 08:49:12,925 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-18 08:49:12,926 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2018-11-18 08:49:12,927 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-11-18 08:49:12,927 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-11-18 08:49:12,927 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2018-11-18 08:49:12,927 INFO L87 Difference]: Start difference. First operand 50 states and 61 transitions. Second operand 7 states. [2018-11-18 08:49:22,244 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-18 08:49:22,244 INFO L93 Difference]: Finished difference Result 68 states and 79 transitions. [2018-11-18 08:49:22,279 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-11-18 08:49:22,280 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 19 [2018-11-18 08:49:22,280 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-18 08:49:22,281 INFO L225 Difference]: With dead ends: 68 [2018-11-18 08:49:22,281 INFO L226 Difference]: Without dead ends: 51 [2018-11-18 08:49:22,282 INFO L604 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 [2018-11-18 08:49:22,282 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51 states. [2018-11-18 08:49:22,286 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51 to 48. [2018-11-18 08:49:22,286 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 48 states. [2018-11-18 08:49:22,286 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48 states to 48 states and 56 transitions. [2018-11-18 08:49:22,287 INFO L78 Accepts]: Start accepts. Automaton has 48 states and 56 transitions. Word has length 19 [2018-11-18 08:49:22,287 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-18 08:49:22,287 INFO L480 AbstractCegarLoop]: Abstraction has 48 states and 56 transitions. [2018-11-18 08:49:22,287 INFO L481 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-11-18 08:49:22,287 INFO L276 IsEmpty]: Start isEmpty. Operand 48 states and 56 transitions. [2018-11-18 08:49:22,287 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2018-11-18 08:49:22,287 INFO L367 BasicCegarLoop]: Found error trace [2018-11-18 08:49:22,287 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-18 08:49:22,288 INFO L423 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-18 08:49:22,288 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 08:49:22,288 INFO L82 PathProgramCache]: Analyzing trace with hash -840699269, now seen corresponding path program 1 times [2018-11-18 08:49:22,288 INFO L223 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-11-18 08:49:22,288 INFO L69 tionRefinementEngine]: Using refinement strategy WalrusRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_20e03893-6bc8-4db8-bb56-f8ab022cbf74/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 [2018-11-18 08:49:22,291 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 08:49:22,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 08:49:22,396 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-18 08:49:22,443 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-18 08:49:22,443 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-11-18 08:49:22,452 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-18 08:49:22,452 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2018-11-18 08:49:22,453 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-11-18 08:49:22,453 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-11-18 08:49:22,453 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2018-11-18 08:49:22,453 INFO L87 Difference]: Start difference. First operand 48 states and 56 transitions. Second operand 7 states. [2018-11-18 08:49:29,991 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-18 08:49:29,991 INFO L93 Difference]: Finished difference Result 56 states and 64 transitions. [2018-11-18 08:49:29,991 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-11-18 08:49:29,991 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 21 [2018-11-18 08:49:29,991 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-18 08:49:29,992 INFO L225 Difference]: With dead ends: 56 [2018-11-18 08:49:29,992 INFO L226 Difference]: Without dead ends: 53 [2018-11-18 08:49:29,992 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2018-11-18 08:49:29,993 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53 states. [2018-11-18 08:49:29,996 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53 to 52. [2018-11-18 08:49:29,996 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 52 states. [2018-11-18 08:49:29,996 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 60 transitions. [2018-11-18 08:49:29,997 INFO L78 Accepts]: Start accepts. Automaton has 52 states and 60 transitions. Word has length 21 [2018-11-18 08:49:29,997 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-18 08:49:29,997 INFO L480 AbstractCegarLoop]: Abstraction has 52 states and 60 transitions. [2018-11-18 08:49:29,997 INFO L481 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-11-18 08:49:29,997 INFO L276 IsEmpty]: Start isEmpty. Operand 52 states and 60 transitions. [2018-11-18 08:49:29,998 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2018-11-18 08:49:29,998 INFO L367 BasicCegarLoop]: Found error trace [2018-11-18 08:49:29,998 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-18 08:49:29,998 INFO L423 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-18 08:49:29,998 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 08:49:29,998 INFO L82 PathProgramCache]: Analyzing trace with hash 1406813661, now seen corresponding path program 1 times [2018-11-18 08:49:29,998 INFO L223 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-11-18 08:49:29,999 INFO L69 tionRefinementEngine]: Using refinement strategy WalrusRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_20e03893-6bc8-4db8-bb56-f8ab022cbf74/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 [2018-11-18 08:49:30,002 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 08:49:30,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 08:49:30,939 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-18 08:49:31,020 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-18 08:49:31,020 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-11-18 08:49:31,037 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-18 08:49:31,037 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2018-11-18 08:49:31,037 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-11-18 08:49:31,037 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-11-18 08:49:31,037 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2018-11-18 08:49:31,037 INFO L87 Difference]: Start difference. First operand 52 states and 60 transitions. Second operand 7 states. [2018-11-18 08:49:41,354 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-18 08:49:41,355 INFO L93 Difference]: Finished difference Result 73 states and 83 transitions. [2018-11-18 08:49:41,391 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2018-11-18 08:49:41,391 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 23 [2018-11-18 08:49:41,391 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-18 08:49:41,392 INFO L225 Difference]: With dead ends: 73 [2018-11-18 08:49:41,392 INFO L226 Difference]: Without dead ends: 39 [2018-11-18 08:49:41,392 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2018-11-18 08:49:41,392 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39 states. [2018-11-18 08:49:41,395 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 39. [2018-11-18 08:49:41,395 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39 states. [2018-11-18 08:49:41,396 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 42 transitions. [2018-11-18 08:49:41,396 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 42 transitions. Word has length 23 [2018-11-18 08:49:41,396 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-18 08:49:41,396 INFO L480 AbstractCegarLoop]: Abstraction has 39 states and 42 transitions. [2018-11-18 08:49:41,396 INFO L481 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-11-18 08:49:41,396 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 42 transitions. [2018-11-18 08:49:41,397 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2018-11-18 08:49:41,397 INFO L367 BasicCegarLoop]: Found error trace [2018-11-18 08:49:41,397 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-18 08:49:41,397 INFO L423 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-18 08:49:41,398 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 08:49:41,398 INFO L82 PathProgramCache]: Analyzing trace with hash 195386854, now seen corresponding path program 1 times [2018-11-18 08:49:41,398 INFO L223 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-11-18 08:49:41,398 INFO L69 tionRefinementEngine]: Using refinement strategy WalrusRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_20e03893-6bc8-4db8-bb56-f8ab022cbf74/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 [2018-11-18 08:49:41,401 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 08:49:42,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 08:49:42,362 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-18 08:49:42,987 WARN L180 SmtUtils]: Spent 279.00 ms on a formula simplification that was a NOOP. DAG size: 16 [2018-11-18 08:49:42,992 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-18 08:49:42,993 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-11-18 08:49:43,010 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-18 08:49:43,010 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-11-18 08:49:43,010 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-11-18 08:49:43,011 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-11-18 08:49:43,011 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-11-18 08:49:43,011 INFO L87 Difference]: Start difference. First operand 39 states and 42 transitions. Second operand 6 states. [2018-11-18 08:49:44,584 WARN L180 SmtUtils]: Spent 330.00 ms on a formula simplification that was a NOOP. DAG size: 18 [2018-11-18 08:49:49,501 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-18 08:49:49,501 INFO L93 Difference]: Finished difference Result 50 states and 52 transitions. [2018-11-18 08:49:49,507 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-11-18 08:49:49,507 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 24 [2018-11-18 08:49:49,507 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-18 08:49:49,507 INFO L225 Difference]: With dead ends: 50 [2018-11-18 08:49:49,507 INFO L226 Difference]: Without dead ends: 30 [2018-11-18 08:49:49,508 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 18 SyntacticMatches, 1 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2018-11-18 08:49:49,508 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states. [2018-11-18 08:49:49,511 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 30. [2018-11-18 08:49:49,511 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2018-11-18 08:49:49,511 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 29 transitions. [2018-11-18 08:49:49,511 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 29 transitions. Word has length 24 [2018-11-18 08:49:49,511 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-18 08:49:49,511 INFO L480 AbstractCegarLoop]: Abstraction has 30 states and 29 transitions. [2018-11-18 08:49:49,511 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-11-18 08:49:49,512 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 29 transitions. [2018-11-18 08:49:49,512 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2018-11-18 08:49:49,512 INFO L367 BasicCegarLoop]: Found error trace [2018-11-18 08:49:49,512 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-18 08:49:49,512 INFO L423 AbstractCegarLoop]: === Iteration 6 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-18 08:49:49,512 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 08:49:49,512 INFO L82 PathProgramCache]: Analyzing trace with hash 970509237, now seen corresponding path program 1 times [2018-11-18 08:49:49,513 INFO L223 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-11-18 08:49:49,513 INFO L69 tionRefinementEngine]: Using refinement strategy WalrusRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_20e03893-6bc8-4db8-bb56-f8ab022cbf74/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 [2018-11-18 08:49:49,518 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 08:49:49,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 08:49:49,623 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-18 08:49:49,763 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-18 08:49:49,763 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-11-18 08:49:49,771 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-18 08:49:49,772 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2018-11-18 08:49:49,772 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2018-11-18 08:49:49,772 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2018-11-18 08:49:49,772 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=111, Unknown=0, NotChecked=0, Total=132 [2018-11-18 08:49:49,772 INFO L87 Difference]: Start difference. First operand 30 states and 29 transitions. Second operand 12 states. [2018-11-18 08:49:50,086 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-18 08:49:50,086 INFO L93 Difference]: Finished difference Result 30 states and 29 transitions. [2018-11-18 08:49:50,087 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2018-11-18 08:49:50,087 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 29 [2018-11-18 08:49:50,087 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-18 08:49:50,087 INFO L225 Difference]: With dead ends: 30 [2018-11-18 08:49:50,087 INFO L226 Difference]: Without dead ends: 0 [2018-11-18 08:49:50,087 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=51, Invalid=255, Unknown=0, NotChecked=0, Total=306 [2018-11-18 08:49:50,087 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2018-11-18 08:49:50,088 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2018-11-18 08:49:50,088 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2018-11-18 08:49:50,088 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2018-11-18 08:49:50,088 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 29 [2018-11-18 08:49:50,088 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-18 08:49:50,088 INFO L480 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2018-11-18 08:49:50,088 INFO L481 AbstractCegarLoop]: Interpolant automaton has 12 states. [2018-11-18 08:49:50,088 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2018-11-18 08:49:50,089 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2018-11-18 08:49:50,092 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2018-11-18 08:49:50,304 INFO L425 ceAbstractionStarter]: For program point ULTIMATE.initFINAL(line -1) no Hoare annotation was computed. [2018-11-18 08:49:50,304 INFO L428 ceAbstractionStarter]: At program point ULTIMATE.initENTRY(line -1) the Hoare annotation is: true [2018-11-18 08:49:50,304 INFO L425 ceAbstractionStarter]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2018-11-18 08:49:50,304 INFO L425 ceAbstractionStarter]: For program point fabs_floatEXIT(lines 14 27) no Hoare annotation was computed. [2018-11-18 08:49:50,305 INFO L425 ceAbstractionStarter]: For program point L21(lines 21 25) no Hoare annotation was computed. [2018-11-18 08:49:50,305 INFO L425 ceAbstractionStarter]: For program point L21-2(lines 14 27) no Hoare annotation was computed. [2018-11-18 08:49:50,305 INFO L425 ceAbstractionStarter]: For program point L21-3(lines 21 25) no Hoare annotation was computed. [2018-11-18 08:49:50,305 INFO L425 ceAbstractionStarter]: For program point fabs_floatFINAL(lines 14 27) no Hoare annotation was computed. [2018-11-18 08:49:50,305 INFO L428 ceAbstractionStarter]: At program point fabs_floatENTRY(lines 14 27) the Hoare annotation is: true [2018-11-18 08:49:50,305 INFO L425 ceAbstractionStarter]: For program point L16-1(lines 16 20) no Hoare annotation was computed. [2018-11-18 08:49:50,305 INFO L428 ceAbstractionStarter]: At program point L16-3(lines 16 20) the Hoare annotation is: true [2018-11-18 08:49:50,305 INFO L425 ceAbstractionStarter]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2018-11-18 08:49:50,305 INFO L421 ceAbstractionStarter]: At program point L-1(line -1) the Hoare annotation is: (and (= ((_ to_fp 8 24) roundNearestTiesToEven ((_ to_fp 11 53) roundNearestTiesToEven 1000000000000000000000000000000.0)) ~huge_atan~0) (= ~one_atan~0 ((_ to_fp 8 24) roundNearestTiesToEven ((_ to_fp 11 53) roundNearestTiesToEven 1.0)))) [2018-11-18 08:49:50,305 INFO L428 ceAbstractionStarter]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2018-11-18 08:49:50,305 INFO L425 ceAbstractionStarter]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2018-11-18 08:49:50,305 INFO L428 ceAbstractionStarter]: At program point mainENTRY(lines 129 147) the Hoare annotation is: true [2018-11-18 08:49:50,305 INFO L425 ceAbstractionStarter]: For program point mainEXIT(lines 129 147) no Hoare annotation was computed. [2018-11-18 08:49:50,305 INFO L425 ceAbstractionStarter]: For program point mainErr0ASSERT_VIOLATIONERROR_FUNCTION(line 142) no Hoare annotation was computed. [2018-11-18 08:49:50,305 INFO L425 ceAbstractionStarter]: For program point L142(line 142) no Hoare annotation was computed. [2018-11-18 08:49:50,306 INFO L425 ceAbstractionStarter]: For program point L141(line 141) no Hoare annotation was computed. [2018-11-18 08:49:50,306 INFO L425 ceAbstractionStarter]: For program point mainFINAL(lines 129 147) no Hoare annotation was computed. [2018-11-18 08:49:50,306 INFO L421 ceAbstractionStarter]: At program point L141-1(line 141) the Hoare annotation is: (or (not (= ((_ to_fp 8 24) roundNearestTiesToEven ((_ to_fp 11 53) roundNearestTiesToEven 1000000000000000000000000000000.0)) ~huge_atan~0)) (and (= (_ +zero 8 24) main_~x~0) (= (_ +zero 8 24) main_~res~0) |main_#t~short29|) (not (= ~one_atan~0 ((_ to_fp 8 24) roundNearestTiesToEven ((_ to_fp 11 53) roundNearestTiesToEven 1.0))))) [2018-11-18 08:49:50,306 INFO L425 ceAbstractionStarter]: For program point L141-2(line 141) no Hoare annotation was computed. [2018-11-18 08:49:50,306 INFO L421 ceAbstractionStarter]: At program point L138(line 138) the Hoare annotation is: (or (not (= ((_ to_fp 8 24) roundNearestTiesToEven ((_ to_fp 11 53) roundNearestTiesToEven 1000000000000000000000000000000.0)) ~huge_atan~0)) (not (= ~one_atan~0 ((_ to_fp 8 24) roundNearestTiesToEven ((_ to_fp 11 53) roundNearestTiesToEven 1.0)))) (= (_ +zero 8 24) main_~x~0)) [2018-11-18 08:49:50,306 INFO L425 ceAbstractionStarter]: For program point L138-1(line 138) no Hoare annotation was computed. [2018-11-18 08:49:50,306 INFO L425 ceAbstractionStarter]: For program point L141-4(lines 141 144) no Hoare annotation was computed. [2018-11-18 08:49:50,306 INFO L425 ceAbstractionStarter]: For program point __signbit_floatFINAL(lines 117 127) no Hoare annotation was computed. [2018-11-18 08:49:50,306 INFO L425 ceAbstractionStarter]: For program point L120-1(lines 120 124) no Hoare annotation was computed. [2018-11-18 08:49:50,307 INFO L421 ceAbstractionStarter]: At program point L120-3(lines 120 124) the Hoare annotation is: (or (not (= ((_ to_fp 8 24) roundNearestTiesToEven ((_ to_fp 11 53) roundNearestTiesToEven 1000000000000000000000000000000.0)) ~huge_atan~0)) (= |__signbit_float_#in~x| __signbit_float_~x) (not (= ~one_atan~0 ((_ to_fp 8 24) roundNearestTiesToEven ((_ to_fp 11 53) roundNearestTiesToEven 1.0))))) [2018-11-18 08:49:50,307 INFO L425 ceAbstractionStarter]: For program point L120-4(lines 120 124) no Hoare annotation was computed. [2018-11-18 08:49:50,307 INFO L428 ceAbstractionStarter]: At program point __signbit_floatENTRY(lines 117 127) the Hoare annotation is: true [2018-11-18 08:49:50,307 INFO L425 ceAbstractionStarter]: For program point __signbit_floatEXIT(lines 117 127) no Hoare annotation was computed. [2018-11-18 08:49:50,307 INFO L425 ceAbstractionStarter]: For program point L64(lines 64 65) no Hoare annotation was computed. [2018-11-18 08:49:50,307 INFO L428 ceAbstractionStarter]: At program point atan_floatENTRY(lines 53 115) the Hoare annotation is: true [2018-11-18 08:49:50,307 INFO L425 ceAbstractionStarter]: For program point atan_floatFINAL(lines 53 115) no Hoare annotation was computed. [2018-11-18 08:49:50,307 INFO L425 ceAbstractionStarter]: For program point L73(lines 73 74) no Hoare annotation was computed. [2018-11-18 08:49:50,307 INFO L425 ceAbstractionStarter]: For program point L57-1(lines 57 61) no Hoare annotation was computed. [2018-11-18 08:49:50,308 INFO L421 ceAbstractionStarter]: At program point L57-3(lines 57 61) the Hoare annotation is: (or (not (= ((_ to_fp 8 24) roundNearestTiesToEven ((_ to_fp 11 53) roundNearestTiesToEven 1000000000000000000000000000000.0)) ~huge_atan~0)) (= |atan_float_#in~x| atan_float_~x) (not (= ~one_atan~0 ((_ to_fp 8 24) roundNearestTiesToEven ((_ to_fp 11 53) roundNearestTiesToEven 1.0))))) [2018-11-18 08:49:50,308 INFO L425 ceAbstractionStarter]: For program point L57-4(lines 57 61) no Hoare annotation was computed. [2018-11-18 08:49:50,308 INFO L421 ceAbstractionStarter]: At program point L78(line 78) the Hoare annotation is: (or (not (= ((_ to_fp 8 24) roundNearestTiesToEven ((_ to_fp 11 53) roundNearestTiesToEven 1000000000000000000000000000000.0)) ~huge_atan~0)) (and (exists ((atan_float_~hx~0 (_ BitVec 32))) (and (= (fp ((_ extract 31 31) atan_float_~hx~0) ((_ extract 30 23) atan_float_~hx~0) ((_ extract 22 0) atan_float_~hx~0)) |atan_float_#in~x|) (not (bvslt (bvand (_ bv2147483647 32) atan_float_~hx~0) (_ bv822083584 32))))) (exists ((atan_float_~hx~0 (_ BitVec 32))) (and (= (fp ((_ extract 31 31) atan_float_~hx~0) ((_ extract 30 23) atan_float_~hx~0) ((_ extract 22 0) atan_float_~hx~0)) |atan_float_#in~x|) (= (bvand (_ bv2147483647 32) atan_float_~hx~0) atan_float_~ix~1))) (= (fp ((_ extract 31 31) atan_float_~hx~0) ((_ extract 30 23) atan_float_~hx~0) ((_ extract 22 0) atan_float_~hx~0)) |atan_float_#in~x|) (= |atan_float_#in~x| atan_float_~x)) (not (= ~one_atan~0 ((_ to_fp 8 24) roundNearestTiesToEven ((_ to_fp 11 53) roundNearestTiesToEven 1.0))))) [2018-11-18 08:49:50,308 INFO L425 ceAbstractionStarter]: For program point L78-1(line 78) no Hoare annotation was computed. [2018-11-18 08:49:50,308 INFO L425 ceAbstractionStarter]: For program point L66(lines 66 69) no Hoare annotation was computed. [2018-11-18 08:49:50,308 INFO L425 ceAbstractionStarter]: For program point L79(lines 79 95) no Hoare annotation was computed. [2018-11-18 08:49:50,308 INFO L425 ceAbstractionStarter]: For program point L71(lines 71 96) no Hoare annotation was computed. [2018-11-18 08:49:50,308 INFO L425 ceAbstractionStarter]: For program point atan_floatEXIT(lines 53 115) no Hoare annotation was computed. [2018-11-18 08:49:50,308 INFO L425 ceAbstractionStarter]: For program point L63(lines 63 70) no Hoare annotation was computed. [2018-11-18 08:49:50,308 INFO L425 ceAbstractionStarter]: For program point L88(lines 88 94) no Hoare annotation was computed. [2018-11-18 08:49:50,308 INFO L425 ceAbstractionStarter]: For program point L88-2(lines 71 96) no Hoare annotation was computed. [2018-11-18 08:49:50,308 INFO L425 ceAbstractionStarter]: For program point L113(line 113) no Hoare annotation was computed. [2018-11-18 08:49:50,309 INFO L425 ceAbstractionStarter]: For program point L80(lines 80 86) no Hoare annotation was computed. [2018-11-18 08:49:50,309 INFO L425 ceAbstractionStarter]: For program point L113-2(line 113) no Hoare annotation was computed. [2018-11-18 08:49:50,309 INFO L425 ceAbstractionStarter]: For program point L109(lines 109 114) no Hoare annotation was computed. [2018-11-18 08:49:50,309 INFO L425 ceAbstractionStarter]: For program point L72(lines 72 75) no Hoare annotation was computed. [2018-11-18 08:49:50,309 INFO L425 ceAbstractionStarter]: For program point L72-2(lines 72 75) no Hoare annotation was computed. [2018-11-18 08:49:50,313 WARN L387 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2018-11-18 08:49:50,314 WARN L387 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2018-11-18 08:49:50,314 WARN L387 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2018-11-18 08:49:50,314 WARN L387 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2018-11-18 08:49:50,317 WARN L387 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2018-11-18 08:49:50,317 WARN L387 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2018-11-18 08:49:50,317 WARN L387 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2018-11-18 08:49:50,317 WARN L387 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2018-11-18 08:49:50,318 WARN L387 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2018-11-18 08:49:50,318 WARN L387 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2018-11-18 08:49:50,318 WARN L387 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2018-11-18 08:49:50,318 WARN L387 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2018-11-18 08:49:50,319 WARN L387 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2018-11-18 08:49:50,319 WARN L387 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2018-11-18 08:49:50,319 WARN L387 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2018-11-18 08:49:50,319 WARN L387 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2018-11-18 08:49:50,320 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 18.11 08:49:50 BoogieIcfgContainer [2018-11-18 08:49:50,320 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-11-18 08:49:50,321 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2018-11-18 08:49:50,321 INFO L271 PluginConnector]: Initializing Witness Printer... [2018-11-18 08:49:50,321 INFO L276 PluginConnector]: Witness Printer initialized [2018-11-18 08:49:50,321 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 08:49:12" (3/4) ... [2018-11-18 08:49:50,323 INFO L144 WitnessPrinter]: Generating witness for correct program [2018-11-18 08:49:50,327 INFO L333 RCFGBacktranslator]: Ignoring RootEdge to procedure ULTIMATE.init [2018-11-18 08:49:50,327 INFO L333 RCFGBacktranslator]: Ignoring RootEdge to procedure fabs_float [2018-11-18 08:49:50,327 INFO L333 RCFGBacktranslator]: Ignoring RootEdge to procedure main [2018-11-18 08:49:50,327 INFO L333 RCFGBacktranslator]: Ignoring RootEdge to procedure __signbit_float [2018-11-18 08:49:50,328 INFO L333 RCFGBacktranslator]: Ignoring RootEdge to procedure atan_float [2018-11-18 08:49:50,331 INFO L846 BoogieBacktranslator]: Reduced CFG by removing 42 nodes and edges [2018-11-18 08:49:50,331 INFO L846 BoogieBacktranslator]: Reduced CFG by removing 17 nodes and edges [2018-11-18 08:49:50,331 INFO L846 BoogieBacktranslator]: Reduced CFG by removing 7 nodes and edges [2018-11-18 08:49:50,331 INFO L846 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2018-11-18 08:49:50,349 WARN L220 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: (!(~to_fp~LONGDOUBLE(~roundNearestTiesToEven, ~to_fp~LONGDOUBLE(~roundNearestTiesToEven, 1.0E30)) == huge_atan) || \old(x) == x) || !(one_atan == ~to_fp~LONGDOUBLE(~roundNearestTiesToEven, ~to_fp~LONGDOUBLE(~roundNearestTiesToEven, 1.0))) [2018-11-18 08:49:50,349 WARN L220 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: (!(~to_fp~LONGDOUBLE(~roundNearestTiesToEven, ~to_fp~LONGDOUBLE(~roundNearestTiesToEven, 1.0E30)) == huge_atan) || \old(x) == x) || !(one_atan == ~to_fp~LONGDOUBLE(~roundNearestTiesToEven, ~to_fp~LONGDOUBLE(~roundNearestTiesToEven, 1.0))) [2018-11-18 08:49:50,373 INFO L145 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/working_dir_20e03893-6bc8-4db8-bb56-f8ab022cbf74/bin-2019/utaipan/witness.graphml [2018-11-18 08:49:50,374 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2018-11-18 08:49:50,374 INFO L168 Benchmark]: Toolchain (without parser) took 45678.72 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 165.2 MB). Free memory was 950.5 MB in the beginning and 838.8 MB in the end (delta: 111.8 MB). Peak memory consumption was 276.9 MB. Max. memory is 11.5 GB. [2018-11-18 08:49:50,375 INFO L168 Benchmark]: CDTParser took 0.11 ms. Allocated memory is still 1.0 GB. Free memory is still 978.7 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-11-18 08:49:50,375 INFO L168 Benchmark]: CACSL2BoogieTranslator took 228.18 ms. Allocated memory is still 1.0 GB. Free memory was 950.5 MB in the beginning and 934.4 MB in the end (delta: 16.1 MB). Peak memory consumption was 16.1 MB. Max. memory is 11.5 GB. [2018-11-18 08:49:50,375 INFO L168 Benchmark]: Boogie Procedure Inliner took 70.19 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 165.2 MB). Free memory was 934.4 MB in the beginning and 1.2 GB in the end (delta: -218.3 MB). Peak memory consumption was 20.7 MB. Max. memory is 11.5 GB. [2018-11-18 08:49:50,375 INFO L168 Benchmark]: Boogie Preprocessor took 32.78 ms. Allocated memory is still 1.2 GB. Free memory is still 1.2 GB. There was no memory consumed. Max. memory is 11.5 GB. [2018-11-18 08:49:50,375 INFO L168 Benchmark]: RCFGBuilder took 7393.57 ms. Allocated memory is still 1.2 GB. Free memory was 1.2 GB in the beginning and 1.1 GB in the end (delta: 41.1 MB). Peak memory consumption was 41.1 MB. Max. memory is 11.5 GB. [2018-11-18 08:49:50,376 INFO L168 Benchmark]: TraceAbstraction took 37897.76 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 845.6 MB in the end (delta: 266.1 MB). Peak memory consumption was 266.1 MB. Max. memory is 11.5 GB. [2018-11-18 08:49:50,376 INFO L168 Benchmark]: Witness Printer took 53.00 ms. Allocated memory is still 1.2 GB. Free memory was 845.6 MB in the beginning and 838.8 MB in the end (delta: 6.8 MB). Peak memory consumption was 6.8 MB. Max. memory is 11.5 GB. [2018-11-18 08:49:50,377 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 978.7 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 228.18 ms. Allocated memory is still 1.0 GB. Free memory was 950.5 MB in the beginning and 934.4 MB in the end (delta: 16.1 MB). Peak memory consumption was 16.1 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 70.19 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 165.2 MB). Free memory was 934.4 MB in the beginning and 1.2 GB in the end (delta: -218.3 MB). Peak memory consumption was 20.7 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 32.78 ms. Allocated memory is still 1.2 GB. Free memory is still 1.2 GB. There was no memory consumed. Max. memory is 11.5 GB. * RCFGBuilder took 7393.57 ms. Allocated memory is still 1.2 GB. Free memory was 1.2 GB in the beginning and 1.1 GB in the end (delta: 41.1 MB). Peak memory consumption was 41.1 MB. Max. memory is 11.5 GB. * TraceAbstraction took 37897.76 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 845.6 MB in the end (delta: 266.1 MB). Peak memory consumption was 266.1 MB. Max. memory is 11.5 GB. * Witness Printer took 53.00 ms. Allocated memory is still 1.2 GB. Free memory was 845.6 MB in the beginning and 838.8 MB in the end (delta: 6.8 MB). Peak memory consumption was 6.8 MB. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.boogie.preprocessor: - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 142]: 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: 57]: Loop Invariant [2018-11-18 08:49:50,380 WARN L387 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2018-11-18 08:49:50,380 WARN L387 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2018-11-18 08:49:50,380 WARN L387 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2018-11-18 08:49:50,380 WARN L387 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2018-11-18 08:49:50,381 WARN L387 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2018-11-18 08:49:50,381 WARN L387 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2018-11-18 08:49:50,381 WARN L387 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2018-11-18 08:49:50,381 WARN L387 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven Derived loop invariant: (!(~to_fp~LONGDOUBLE(~roundNearestTiesToEven, ~to_fp~LONGDOUBLE(~roundNearestTiesToEven, 1.0E30)) == huge_atan) || \old(x) == x) || !(one_atan == ~to_fp~LONGDOUBLE(~roundNearestTiesToEven, ~to_fp~LONGDOUBLE(~roundNearestTiesToEven, 1.0))) - InvariantResult [Line: 16]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 120]: Loop Invariant [2018-11-18 08:49:50,382 WARN L387 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2018-11-18 08:49:50,382 WARN L387 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2018-11-18 08:49:50,382 WARN L387 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2018-11-18 08:49:50,382 WARN L387 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2018-11-18 08:49:50,382 WARN L387 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2018-11-18 08:49:50,382 WARN L387 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2018-11-18 08:49:50,383 WARN L387 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2018-11-18 08:49:50,383 WARN L387 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven Derived loop invariant: (!(~to_fp~LONGDOUBLE(~roundNearestTiesToEven, ~to_fp~LONGDOUBLE(~roundNearestTiesToEven, 1.0E30)) == huge_atan) || \old(x) == x) || !(one_atan == ~to_fp~LONGDOUBLE(~roundNearestTiesToEven, ~to_fp~LONGDOUBLE(~roundNearestTiesToEven, 1.0))) - StatisticsResult: Ultimate Automizer benchmark data CFG has 6 procedures, 54 locations, 1 error locations. SAFE Result, 37.8s OverallTime, 6 OverallIterations, 1 TraceHistogramMax, 34.0s AutomataDifference, 0.0s DeadEndRemovalTime, 0.2s HoareAnnotationTime, HoareTripleCheckerStatistics: 243 SDtfs, 187 SDslu, 754 SDs, 0 SdLazy, 298 SolverSat, 21 SolverUnsat, 5 SolverUnknown, 0 SolverNotchecked, 31.7s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 146 GetRequests, 98 SyntacticMatches, 1 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 1.8s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=54occurred 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, 4 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 13 LocationsWithAnnotation, 23 PreInvPairs, 28 NumberOfFragments, 170 HoareAnnotationTreeSize, 23 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 13 FomulaSimplificationsInter, 152 FormulaSimplificationTreeSizeReductionInter, 0.1s HoareSimplificationTimeInter, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 2.0s SatisfiabilityAnalysisTime, 1.2s InterpolantComputationTime, 134 NumberOfCodeBlocks, 134 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 128 ConstructedInterpolants, 14 QuantifiedInterpolants, 18729 SizeOfPredicates, 21 NumberOfNonLiveVariables, 710 ConjunctsInSsa, 40 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...