./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.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 635dfa2a Calling Ultimate with: java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/working_dir_02051ad5-8c9f-4447-9158-3c09f102d681/bin-2019/utaipan/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/working_dir_02051ad5-8c9f-4447-9158-3c09f102d681/bin-2019/utaipan/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/working_dir_02051ad5-8c9f-4447-9158-3c09f102d681/bin-2019/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/working_dir_02051ad5-8c9f-4447-9158-3c09f102d681/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_02051ad5-8c9f-4447-9158-3c09f102d681/bin-2019/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/working_dir_02051ad5-8c9f-4447-9158-3c09f102d681/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_02051ad5-8c9f-4447-9158-3c09f102d681/bin-2019/utaipan/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/working_dir_02051ad5-8c9f-4447-9158-3c09f102d681/bin-2019/utaipan/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/working_dir_02051ad5-8c9f-4447-9158-3c09f102d681/bin-2019/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/working_dir_02051ad5-8c9f-4447-9158-3c09f102d681/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_02051ad5-8c9f-4447-9158-3c09f102d681/bin-2019/utaipan/config/svcomp-Reach-32bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/working_dir_02051ad5-8c9f-4447-9158-3c09f102d681/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 0.1.23-635dfa2 [2018-12-02 12:50:02,833 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-12-02 12:50:02,834 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-12-02 12:50:02,840 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-12-02 12:50:02,840 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-12-02 12:50:02,841 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-12-02 12:50:02,841 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-12-02 12:50:02,842 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-12-02 12:50:02,843 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-12-02 12:50:02,844 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-12-02 12:50:02,844 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-12-02 12:50:02,845 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-12-02 12:50:02,845 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-12-02 12:50:02,846 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-12-02 12:50:02,846 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-12-02 12:50:02,846 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-12-02 12:50:02,847 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-12-02 12:50:02,848 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-12-02 12:50:02,849 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-12-02 12:50:02,850 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-12-02 12:50:02,850 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-12-02 12:50:02,851 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-12-02 12:50:02,852 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-12-02 12:50:02,852 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-12-02 12:50:02,852 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-12-02 12:50:02,853 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-12-02 12:50:02,853 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-12-02 12:50:02,854 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-12-02 12:50:02,854 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-12-02 12:50:02,855 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-12-02 12:50:02,855 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-12-02 12:50:02,855 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-12-02 12:50:02,855 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-12-02 12:50:02,855 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-12-02 12:50:02,856 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-12-02 12:50:02,856 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-12-02 12:50:02,857 INFO L98 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/working_dir_02051ad5-8c9f-4447-9158-3c09f102d681/bin-2019/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf [2018-12-02 12:50:02,864 INFO L110 SettingsManager]: Loading preferences was successful [2018-12-02 12:50:02,864 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-12-02 12:50:02,865 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-12-02 12:50:02,865 INFO L133 SettingsManager]: * ... calls to implemented procedures=ONLY_FOR_CONCURRENT_PROGRAMS [2018-12-02 12:50:02,865 INFO L133 SettingsManager]: * User list type=DISABLED [2018-12-02 12:50:02,865 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-12-02 12:50:02,865 INFO L133 SettingsManager]: * Explicit value domain=true [2018-12-02 12:50:02,866 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-12-02 12:50:02,866 INFO L133 SettingsManager]: * Octagon Domain=false [2018-12-02 12:50:02,866 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-12-02 12:50:02,866 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-12-02 12:50:02,866 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-12-02 12:50:02,866 INFO L133 SettingsManager]: * Interval Domain=false [2018-12-02 12:50:02,866 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-12-02 12:50:02,867 INFO L133 SettingsManager]: * sizeof long=4 [2018-12-02 12:50:02,867 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-12-02 12:50:02,867 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-12-02 12:50:02,867 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-12-02 12:50:02,867 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-12-02 12:50:02,867 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-12-02 12:50:02,867 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-12-02 12:50:02,867 INFO L133 SettingsManager]: * sizeof long double=12 [2018-12-02 12:50:02,867 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-12-02 12:50:02,867 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-12-02 12:50:02,868 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-12-02 12:50:02,868 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-12-02 12:50:02,868 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-12-02 12:50:02,868 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-12-02 12:50:02,868 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-12-02 12:50:02,868 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-12-02 12:50:02,868 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-12-02 12:50:02,868 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-12-02 12:50:02,868 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-12-02 12:50:02,868 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-12-02 12:50:02,868 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-12-02 12:50:02,869 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-12-02 12:50:02,869 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_02051ad5-8c9f-4447-9158-3c09f102d681/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 [2018-12-02 12:50:02,886 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-12-02 12:50:02,893 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-12-02 12:50:02,895 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-12-02 12:50:02,896 INFO L271 PluginConnector]: Initializing CDTParser... [2018-12-02 12:50:02,896 INFO L276 PluginConnector]: CDTParser initialized [2018-12-02 12:50:02,896 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/working_dir_02051ad5-8c9f-4447-9158-3c09f102d681/bin-2019/utaipan/../../sv-benchmarks/c/float-newlib/float_req_bl_0620a_true-unreach-call.c [2018-12-02 12:50:02,931 INFO L221 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_02051ad5-8c9f-4447-9158-3c09f102d681/bin-2019/utaipan/data/ce05dffb8/3593205e3a484499b9918cf894e9b179/FLAG9feaa6ef7 [2018-12-02 12:50:03,367 INFO L307 CDTParser]: Found 1 translation units. [2018-12-02 12:50:03,368 INFO L161 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/working_dir_02051ad5-8c9f-4447-9158-3c09f102d681/sv-benchmarks/c/float-newlib/float_req_bl_0620a_true-unreach-call.c [2018-12-02 12:50:03,372 INFO L355 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_02051ad5-8c9f-4447-9158-3c09f102d681/bin-2019/utaipan/data/ce05dffb8/3593205e3a484499b9918cf894e9b179/FLAG9feaa6ef7 [2018-12-02 12:50:03,380 INFO L363 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/working_dir_02051ad5-8c9f-4447-9158-3c09f102d681/bin-2019/utaipan/data/ce05dffb8/3593205e3a484499b9918cf894e9b179 [2018-12-02 12:50:03,382 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-12-02 12:50:03,383 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2018-12-02 12:50:03,383 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-12-02 12:50:03,383 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-12-02 12:50:03,385 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-12-02 12:50:03,386 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 12:50:03" (1/1) ... [2018-12-02 12:50:03,387 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3b1a052f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 12:50:03, skipping insertion in model container [2018-12-02 12:50:03,388 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 12:50:03" (1/1) ... [2018-12-02 12:50:03,392 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-12-02 12:50:03,403 INFO L176 MainTranslator]: Built tables and reachable declarations [2018-12-02 12:50:03,507 INFO L203 PostProcessor]: Analyzing one entry point: main [2018-12-02 12:50:03,512 INFO L191 MainTranslator]: Completed pre-run [2018-12-02 12:50:03,533 INFO L203 PostProcessor]: Analyzing one entry point: main [2018-12-02 12:50:03,583 INFO L195 MainTranslator]: Completed translation [2018-12-02 12:50:03,583 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 12:50:03 WrapperNode [2018-12-02 12:50:03,583 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-12-02 12:50:03,584 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-12-02 12:50:03,584 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-12-02 12:50:03,584 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-12-02 12:50:03,589 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 12:50:03" (1/1) ... [2018-12-02 12:50:03,596 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 12:50:03" (1/1) ... [2018-12-02 12:50:03,600 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-12-02 12:50:03,600 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-12-02 12:50:03,600 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-12-02 12:50:03,600 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-12-02 12:50:03,606 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 12:50:03" (1/1) ... [2018-12-02 12:50:03,606 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 12:50:03" (1/1) ... [2018-12-02 12:50:03,608 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 12:50:03" (1/1) ... [2018-12-02 12:50:03,608 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 12:50:03" (1/1) ... [2018-12-02 12:50:03,617 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 12:50:03" (1/1) ... [2018-12-02 12:50:03,621 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 12:50:03" (1/1) ... [2018-12-02 12:50:03,622 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 12:50:03" (1/1) ... [2018-12-02 12:50:03,624 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-12-02 12:50:03,624 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-12-02 12:50:03,624 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-12-02 12:50:03,624 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-12-02 12:50:03,625 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 12:50:03" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_02051ad5-8c9f-4447-9158-3c09f102d681/bin-2019/utaipan/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-12-02 12:50:03,657 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-12-02 12:50:03,657 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-12-02 12:50:03,657 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2018-12-02 12:50:03,657 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2018-12-02 12:50:03,657 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-12-02 12:50:03,657 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-12-02 12:50:03,657 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2018-12-02 12:50:03,658 INFO L130 BoogieDeclarations]: Found specification of procedure fabs_float [2018-12-02 12:50:03,658 INFO L138 BoogieDeclarations]: Found implementation of procedure fabs_float [2018-12-02 12:50:03,658 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.alloc [2018-12-02 12:50:03,658 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-12-02 12:50:03,658 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-12-02 12:50:03,658 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2018-12-02 12:50:03,658 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~real [2018-12-02 12:50:03,658 INFO L130 BoogieDeclarations]: Found specification of procedure __signbit_float [2018-12-02 12:50:03,658 INFO L138 BoogieDeclarations]: Found implementation of procedure __signbit_float [2018-12-02 12:50:03,658 INFO L130 BoogieDeclarations]: Found specification of procedure atan_float [2018-12-02 12:50:03,659 INFO L138 BoogieDeclarations]: Found implementation of procedure atan_float [2018-12-02 12:50:03,659 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2018-12-02 12:50:03,854 INFO L275 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-12-02 12:50:03,855 INFO L280 CfgBuilder]: Removed 8 assue(true) statements. [2018-12-02 12:50:03,855 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 12:50:03 BoogieIcfgContainer [2018-12-02 12:50:03,855 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-12-02 12:50:03,855 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-12-02 12:50:03,856 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-12-02 12:50:03,857 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-12-02 12:50:03,857 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.12 12:50:03" (1/3) ... [2018-12-02 12:50:03,858 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2a4a8f9a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 12:50:03, skipping insertion in model container [2018-12-02 12:50:03,858 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 12:50:03" (2/3) ... [2018-12-02 12:50:03,858 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2a4a8f9a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 12:50:03, skipping insertion in model container [2018-12-02 12:50:03,858 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 12:50:03" (3/3) ... [2018-12-02 12:50:03,859 INFO L112 eAbstractionObserver]: Analyzing ICFG float_req_bl_0620a_true-unreach-call.c [2018-12-02 12:50:03,865 INFO L156 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-12-02 12:50:03,869 INFO L168 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-12-02 12:50:03,877 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-12-02 12:50:03,895 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-12-02 12:50:03,895 INFO L383 AbstractCegarLoop]: Hoare is true [2018-12-02 12:50:03,895 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-12-02 12:50:03,895 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-12-02 12:50:03,895 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-12-02 12:50:03,895 INFO L387 AbstractCegarLoop]: Difference is false [2018-12-02 12:50:03,895 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-12-02 12:50:03,895 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-12-02 12:50:03,905 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states. [2018-12-02 12:50:03,909 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2018-12-02 12:50:03,909 INFO L394 BasicCegarLoop]: Found error trace [2018-12-02 12:50:03,910 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-02 12:50:03,912 INFO L423 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-02 12:50:03,915 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-02 12:50:03,915 INFO L82 PathProgramCache]: Analyzing trace with hash -1775699146, now seen corresponding path program 1 times [2018-12-02 12:50:03,916 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-12-02 12:50:03,943 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-02 12:50:03,943 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-02 12:50:03,943 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-02 12:50:03,943 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-12-02 12:50:03,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-02 12:50:04,008 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-02 12:50:04,010 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-12-02 12:50:04,010 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-12-02 12:50:04,010 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-12-02 12:50:04,013 INFO L459 AbstractCegarLoop]: Interpolant automaton has 2 states [2018-12-02 12:50:04,020 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2018-12-02 12:50:04,020 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-12-02 12:50:04,021 INFO L87 Difference]: Start difference. First operand 54 states. Second operand 2 states. [2018-12-02 12:50:04,035 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-02 12:50:04,035 INFO L93 Difference]: Finished difference Result 100 states and 142 transitions. [2018-12-02 12:50:04,035 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2018-12-02 12:50:04,036 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 18 [2018-12-02 12:50:04,036 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-02 12:50:04,042 INFO L225 Difference]: With dead ends: 100 [2018-12-02 12:50:04,042 INFO L226 Difference]: Without dead ends: 50 [2018-12-02 12:50:04,044 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-12-02 12:50:04,053 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50 states. [2018-12-02 12:50:04,064 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50 to 50. [2018-12-02 12:50:04,064 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 50 states. [2018-12-02 12:50:04,065 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 61 transitions. [2018-12-02 12:50:04,066 INFO L78 Accepts]: Start accepts. Automaton has 50 states and 61 transitions. Word has length 18 [2018-12-02 12:50:04,066 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-02 12:50:04,066 INFO L480 AbstractCegarLoop]: Abstraction has 50 states and 61 transitions. [2018-12-02 12:50:04,066 INFO L481 AbstractCegarLoop]: Interpolant automaton has 2 states. [2018-12-02 12:50:04,066 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 61 transitions. [2018-12-02 12:50:04,067 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2018-12-02 12:50:04,067 INFO L394 BasicCegarLoop]: Found error trace [2018-12-02 12:50:04,067 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-02 12:50:04,067 INFO L423 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-02 12:50:04,067 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-02 12:50:04,067 INFO L82 PathProgramCache]: Analyzing trace with hash 1046652015, now seen corresponding path program 1 times [2018-12-02 12:50:04,068 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-12-02 12:50:04,068 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-02 12:50:04,068 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-02 12:50:04,068 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-02 12:50:04,068 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-12-02 12:50:04,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-12-02 12:50:04,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-12-02 12:50:04,121 INFO L469 BasicCegarLoop]: Counterexample might be feasible [2018-12-02 12:50:04,136 WARN L1298 BoogieBacktranslator]: Unfinished Backtranslation: IntegerLiteral 6442450962 could not be translated for associated CType ARRAY#_4_~FLOAT# [2018-12-02 12:50:04,137 WARN L1298 BoogieBacktranslator]: Unfinished Backtranslation: IntegerLiteral 6442450956 could not be translated for associated CType ARRAY#_4_~FLOAT# [2018-12-02 12:50:04,137 WARN L1298 BoogieBacktranslator]: Unfinished Backtranslation: IntegerLiteral 6442450964 could not be translated for associated CType ARRAY#_4_~FLOAT# [2018-12-02 12:50:04,137 WARN L1298 BoogieBacktranslator]: Unfinished Backtranslation: IntegerLiteral 6442450965 could not be translated for associated CType ARRAY#_11_~FLOAT# [2018-12-02 12:50:04,137 WARN L1298 BoogieBacktranslator]: Unfinished Backtranslation: IntegerLiteral 6442450952 could not be translated for associated CType ARRAY#_4_~FLOAT# [2018-12-02 12:50:04,137 WARN L1298 BoogieBacktranslator]: Unfinished Backtranslation: IntegerLiteral 6442450960 could not be translated for associated CType ARRAY#_11_~FLOAT# [2018-12-02 12:50:04,144 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 02.12 12:50:04 BoogieIcfgContainer [2018-12-02 12:50:04,144 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-12-02 12:50:04,144 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2018-12-02 12:50:04,144 INFO L271 PluginConnector]: Initializing Witness Printer... [2018-12-02 12:50:04,144 INFO L276 PluginConnector]: Witness Printer initialized [2018-12-02 12:50:04,145 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 12:50:03" (3/4) ... [2018-12-02 12:50:04,147 INFO L147 WitnessPrinter]: No result that supports witness generation found [2018-12-02 12:50:04,147 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2018-12-02 12:50:04,147 INFO L168 Benchmark]: Toolchain (without parser) took 765.11 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 129.5 MB). Free memory was 962.4 MB in the beginning and 1.1 GB in the end (delta: -88.1 MB). Peak memory consumption was 41.4 MB. Max. memory is 11.5 GB. [2018-12-02 12:50:04,148 INFO L168 Benchmark]: CDTParser took 0.12 ms. Allocated memory is still 1.0 GB. Free memory is still 982.3 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-12-02 12:50:04,148 INFO L168 Benchmark]: CACSL2BoogieTranslator took 200.02 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 129.5 MB). Free memory was 962.4 MB in the beginning and 1.1 GB in the end (delta: -158.3 MB). Peak memory consumption was 30.6 MB. Max. memory is 11.5 GB. [2018-12-02 12:50:04,149 INFO L168 Benchmark]: Boogie Procedure Inliner took 16.43 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. [2018-12-02 12:50:04,149 INFO L168 Benchmark]: Boogie Preprocessor took 23.60 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. [2018-12-02 12:50:04,149 INFO L168 Benchmark]: RCFGBuilder took 231.13 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 25.3 MB). Peak memory consumption was 25.3 MB. Max. memory is 11.5 GB. [2018-12-02 12:50:04,150 INFO L168 Benchmark]: TraceAbstraction took 288.50 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 44.9 MB). Peak memory consumption was 44.9 MB. Max. memory is 11.5 GB. [2018-12-02 12:50:04,150 INFO L168 Benchmark]: Witness Printer took 2.66 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. [2018-12-02 12:50:04,151 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 982.3 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 200.02 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 129.5 MB). Free memory was 962.4 MB in the beginning and 1.1 GB in the end (delta: -158.3 MB). Peak memory consumption was 30.6 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 16.43 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. * Boogie Preprocessor took 23.60 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. * RCFGBuilder took 231.13 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 25.3 MB). Peak memory consumption was 25.3 MB. Max. memory is 11.5 GB. * TraceAbstraction took 288.50 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 44.9 MB). Peak memory consumption was 44.9 MB. Max. memory is 11.5 GB. * Witness Printer took 2.66 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IntegerLiteral 6442450962 could not be translated for associated CType ARRAY#_4_~FLOAT# - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IntegerLiteral 6442450956 could not be translated for associated CType ARRAY#_4_~FLOAT# - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IntegerLiteral 6442450964 could not be translated for associated CType ARRAY#_4_~FLOAT# - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IntegerLiteral 6442450965 could not be translated for associated CType ARRAY#_11_~FLOAT# - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IntegerLiteral 6442450952 could not be translated for associated CType ARRAY#_4_~FLOAT# - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IntegerLiteral 6442450960 could not be translated for associated CType ARRAY#_11_~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] static const float atanhi_atan[] = { 4.6364760399e-01, 7.8539812565e-01, 9.8279368877e-01, 1.5707962513e+00, }; [L36-L41] static const float atanlo_atan[] = { 5.0121582440e-09, 3.7748947079e-08, 3.4473217170e-08, 7.5497894159e-08, }; [L43-L47] 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)=6442450959, \old(huge_floor)=6442450953, \old(one_atan)=6442450945, \old(pi)=6442450954, \old(pi_o_2)=6442450946, \old(pi_o_4)=6442450950, aT_atan={6442450961:0}, atanhi_atan={6442450963:0}, atanlo_atan={6442450947:0}, 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={6442450961:0}, atanhi_atan={6442450963:0}, atanlo_atan={6442450947:0}, 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={6442450961:0}, atanhi_atan={6442450963:0}, atanlo_atan={6442450947:0}, 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={6442450961:0}, atanhi_atan={6442450963:0}, atanlo_atan={6442450947:0}, 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] ieee_float_shape_type gf_u; [L59] gf_u.value = (x) [L60] EXPR gf_u.word [L60] (hx) = gf_u.word [L62] ix = hx & 0x7fffffff VAL [\old(x)=0, aT_atan={6442450961:0}, atanhi_atan={6442450963:0}, atanlo_atan={6442450947:0}, huge_atan=1000000000000000000000000000000, huge_floor=1000000000000000000000000000000, hx=-2147483648, 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={6442450961:0}, atanhi_atan={6442450963:0}, atanlo_atan={6442450947:0}, huge_atan=1000000000000000000000000000000, huge_floor=1000000000000000000000000000000, hx=-2147483648, 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] return x + x; VAL [\old(x)=0, aT_atan={6442450961:0}, atanhi_atan={6442450963:0}, atanlo_atan={6442450947:0}, huge_atan=1000000000000000000000000000000, huge_floor=1000000000000000000000000000000, hx=-2147483648, ix=2139095041, one_atan=1, pi=3141592741/1000000000, pi_o_2=3141592741/2000000000, pi_o_4=3141592741/4000000000, x=0] [L138] RET, EXPR atan_float(x) VAL [aT_atan={6442450961:0}, atan_float(x)=6442450957, atanhi_atan={6442450963:0}, atanlo_atan={6442450947:0}, 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={6442450961:0}, atanhi_atan={6442450963:0}, atanlo_atan={6442450947:0}, huge_atan=1000000000000000000000000000000, huge_floor=1000000000000000000000000000000, one_atan=1, pi=3141592741/1000000000, pi_o_2=3141592741/2000000000, pi_o_4=3141592741/4000000000, res=6442450957, 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={6442450961:0}, atanhi_atan={6442450963:0}, atanlo_atan={6442450947:0}, huge_atan=1000000000000000000000000000000, huge_floor=1000000000000000000000000000000, one_atan=1, pi=3141592741/1000000000, pi_o_2=3141592741/2000000000, pi_o_4=3141592741/4000000000, res=6442450957, x=0] - StatisticsResult: Ultimate Automizer benchmark data CFG has 6 procedures, 54 locations, 1 error locations. UNSAFE Result, 0.2s 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 0.1.23-635dfa2 [2018-12-02 12:50:05,448 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-12-02 12:50:05,449 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-12-02 12:50:05,455 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-12-02 12:50:05,456 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-12-02 12:50:05,456 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-12-02 12:50:05,457 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-12-02 12:50:05,457 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-12-02 12:50:05,458 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-12-02 12:50:05,459 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-12-02 12:50:05,459 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-12-02 12:50:05,459 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-12-02 12:50:05,460 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-12-02 12:50:05,460 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-12-02 12:50:05,461 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-12-02 12:50:05,461 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-12-02 12:50:05,461 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-12-02 12:50:05,462 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-12-02 12:50:05,463 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-12-02 12:50:05,464 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-12-02 12:50:05,464 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-12-02 12:50:05,465 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-12-02 12:50:05,466 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-12-02 12:50:05,466 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-12-02 12:50:05,466 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-12-02 12:50:05,467 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-12-02 12:50:05,467 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-12-02 12:50:05,468 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-12-02 12:50:05,468 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-12-02 12:50:05,468 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-12-02 12:50:05,469 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-12-02 12:50:05,469 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-12-02 12:50:05,469 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-12-02 12:50:05,469 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-12-02 12:50:05,469 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-12-02 12:50:05,470 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-12-02 12:50:05,470 INFO L98 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/working_dir_02051ad5-8c9f-4447-9158-3c09f102d681/bin-2019/utaipan/config/svcomp-Reach-32bit-Taipan_Bitvector.epf [2018-12-02 12:50:05,477 INFO L110 SettingsManager]: Loading preferences was successful [2018-12-02 12:50:05,477 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-12-02 12:50:05,478 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-12-02 12:50:05,478 INFO L133 SettingsManager]: * ... calls to implemented procedures=ONLY_FOR_CONCURRENT_PROGRAMS [2018-12-02 12:50:05,478 INFO L133 SettingsManager]: * User list type=DISABLED [2018-12-02 12:50:05,478 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-12-02 12:50:05,478 INFO L133 SettingsManager]: * Explicit value domain=true [2018-12-02 12:50:05,478 INFO L133 SettingsManager]: * Octagon Domain=false [2018-12-02 12:50:05,479 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-12-02 12:50:05,479 INFO L133 SettingsManager]: * Interval Domain=false [2018-12-02 12:50:05,479 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-12-02 12:50:05,479 INFO L133 SettingsManager]: * sizeof long=4 [2018-12-02 12:50:05,479 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-12-02 12:50:05,479 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-12-02 12:50:05,479 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-12-02 12:50:05,479 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-12-02 12:50:05,480 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-12-02 12:50:05,480 INFO L133 SettingsManager]: * Use bitvectors instead of ints=true [2018-12-02 12:50:05,480 INFO L133 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2018-12-02 12:50:05,480 INFO L133 SettingsManager]: * sizeof long double=12 [2018-12-02 12:50:05,480 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-12-02 12:50:05,480 INFO L133 SettingsManager]: * Use constant arrays=true [2018-12-02 12:50:05,480 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-12-02 12:50:05,480 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-12-02 12:50:05,480 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-12-02 12:50:05,480 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-12-02 12:50:05,480 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-12-02 12:50:05,480 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-12-02 12:50:05,481 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-12-02 12:50:05,481 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-12-02 12:50:05,481 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-12-02 12:50:05,481 INFO L133 SettingsManager]: * Trace refinement strategy=WALRUS [2018-12-02 12:50:05,481 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-12-02 12:50:05,481 INFO L133 SettingsManager]: * Command for external solver=cvc4 --incremental --rewrite-divk --print-success --lang smt [2018-12-02 12:50:05,481 INFO L133 SettingsManager]: * Logic for external solver=AUFBV [2018-12-02 12:50:05,481 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_02051ad5-8c9f-4447-9158-3c09f102d681/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 [2018-12-02 12:50:05,498 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-12-02 12:50:05,505 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-12-02 12:50:05,507 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-12-02 12:50:05,508 INFO L271 PluginConnector]: Initializing CDTParser... [2018-12-02 12:50:05,509 INFO L276 PluginConnector]: CDTParser initialized [2018-12-02 12:50:05,509 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/working_dir_02051ad5-8c9f-4447-9158-3c09f102d681/bin-2019/utaipan/../../sv-benchmarks/c/float-newlib/float_req_bl_0620a_true-unreach-call.c [2018-12-02 12:50:05,544 INFO L221 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_02051ad5-8c9f-4447-9158-3c09f102d681/bin-2019/utaipan/data/f252c929f/830dc3d16e5e4e5d861f3dfa0c7633df/FLAG971b0ebe5 [2018-12-02 12:50:05,962 INFO L307 CDTParser]: Found 1 translation units. [2018-12-02 12:50:05,963 INFO L161 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/working_dir_02051ad5-8c9f-4447-9158-3c09f102d681/sv-benchmarks/c/float-newlib/float_req_bl_0620a_true-unreach-call.c [2018-12-02 12:50:05,967 INFO L355 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_02051ad5-8c9f-4447-9158-3c09f102d681/bin-2019/utaipan/data/f252c929f/830dc3d16e5e4e5d861f3dfa0c7633df/FLAG971b0ebe5 [2018-12-02 12:50:05,974 INFO L363 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/working_dir_02051ad5-8c9f-4447-9158-3c09f102d681/bin-2019/utaipan/data/f252c929f/830dc3d16e5e4e5d861f3dfa0c7633df [2018-12-02 12:50:05,976 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-12-02 12:50:05,977 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2018-12-02 12:50:05,978 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-12-02 12:50:05,978 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-12-02 12:50:05,980 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-12-02 12:50:05,980 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 12:50:05" (1/1) ... [2018-12-02 12:50:05,982 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4dc28ced and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 12:50:05, skipping insertion in model container [2018-12-02 12:50:05,982 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 12:50:05" (1/1) ... [2018-12-02 12:50:05,986 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-12-02 12:50:05,997 INFO L176 MainTranslator]: Built tables and reachable declarations [2018-12-02 12:50:06,107 INFO L203 PostProcessor]: Analyzing one entry point: main [2018-12-02 12:50:06,113 INFO L191 MainTranslator]: Completed pre-run [2018-12-02 12:50:06,141 INFO L203 PostProcessor]: Analyzing one entry point: main [2018-12-02 12:50:06,159 INFO L195 MainTranslator]: Completed translation [2018-12-02 12:50:06,159 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 12:50:06 WrapperNode [2018-12-02 12:50:06,159 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-12-02 12:50:06,160 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-12-02 12:50:06,160 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-12-02 12:50:06,160 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-12-02 12:50:06,165 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 12:50:06" (1/1) ... [2018-12-02 12:50:06,173 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 12:50:06" (1/1) ... [2018-12-02 12:50:06,186 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-12-02 12:50:06,186 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-12-02 12:50:06,186 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-12-02 12:50:06,186 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-12-02 12:50:06,192 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 12:50:06" (1/1) ... [2018-12-02 12:50:06,192 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 12:50:06" (1/1) ... [2018-12-02 12:50:06,195 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 12:50:06" (1/1) ... [2018-12-02 12:50:06,195 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 12:50:06" (1/1) ... [2018-12-02 12:50:06,205 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 12:50:06" (1/1) ... [2018-12-02 12:50:06,236 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 12:50:06" (1/1) ... [2018-12-02 12:50:06,238 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 12:50:06" (1/1) ... [2018-12-02 12:50:06,240 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-12-02 12:50:06,240 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-12-02 12:50:06,240 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-12-02 12:50:06,240 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-12-02 12:50:06,241 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 12:50:06" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_02051ad5-8c9f-4447-9158-3c09f102d681/bin-2019/utaipan/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-12-02 12:50:06,271 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intFLOATTYPE4 [2018-12-02 12:50:06,271 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-12-02 12:50:06,271 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-12-02 12:50:06,271 INFO L130 BoogieDeclarations]: Found specification of procedure read~intFLOATTYPE4 [2018-12-02 12:50:06,271 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-12-02 12:50:06,271 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-12-02 12:50:06,272 INFO L130 BoogieDeclarations]: Found specification of procedure fabs_float [2018-12-02 12:50:06,272 INFO L138 BoogieDeclarations]: Found implementation of procedure fabs_float [2018-12-02 12:50:06,272 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.alloc [2018-12-02 12:50:06,272 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2018-12-02 12:50:06,272 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-12-02 12:50:06,272 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-12-02 12:50:06,272 INFO L130 BoogieDeclarations]: Found specification of procedure write~intFLOATTYPE4 [2018-12-02 12:50:06,272 INFO L130 BoogieDeclarations]: Found specification of procedure __signbit_float [2018-12-02 12:50:06,272 INFO L138 BoogieDeclarations]: Found implementation of procedure __signbit_float [2018-12-02 12:50:06,272 INFO L130 BoogieDeclarations]: Found specification of procedure atan_float [2018-12-02 12:50:06,272 INFO L138 BoogieDeclarations]: Found implementation of procedure atan_float [2018-12-02 12:50:06,272 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2018-12-02 12:50:06,272 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2018-12-02 12:50:06,414 WARN L317 ript$VariableManager]: TermVariabe |q#valueAsBitvector| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-02 12:50:06,440 WARN L317 ript$VariableManager]: TermVariabe |q#valueAsBitvector| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-02 12:50:06,465 WARN L317 ript$VariableManager]: TermVariabe |q#valueAsBitvector| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-02 12:50:07,582 WARN L317 ript$VariableManager]: TermVariabe |q#valueAsBitvector| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-02 12:50:14,835 INFO L275 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-12-02 12:50:14,835 INFO L280 CfgBuilder]: Removed 8 assue(true) statements. [2018-12-02 12:50:14,835 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 12:50:14 BoogieIcfgContainer [2018-12-02 12:50:14,836 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-12-02 12:50:14,836 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-12-02 12:50:14,836 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-12-02 12:50:14,839 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-12-02 12:50:14,839 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.12 12:50:05" (1/3) ... [2018-12-02 12:50:14,840 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@53e415e4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 12:50:14, skipping insertion in model container [2018-12-02 12:50:14,840 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 12:50:06" (2/3) ... [2018-12-02 12:50:14,840 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@53e415e4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 12:50:14, skipping insertion in model container [2018-12-02 12:50:14,840 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 12:50:14" (3/3) ... [2018-12-02 12:50:14,842 INFO L112 eAbstractionObserver]: Analyzing ICFG float_req_bl_0620a_true-unreach-call.c [2018-12-02 12:50:14,848 INFO L156 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-12-02 12:50:14,854 INFO L168 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-12-02 12:50:14,863 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-12-02 12:50:14,882 INFO L133 ementStrategyFactory]: Using default assertion order modulation [2018-12-02 12:50:14,882 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-12-02 12:50:14,882 INFO L383 AbstractCegarLoop]: Hoare is true [2018-12-02 12:50:14,882 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-12-02 12:50:14,883 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-12-02 12:50:14,883 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-12-02 12:50:14,883 INFO L387 AbstractCegarLoop]: Difference is false [2018-12-02 12:50:14,883 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-12-02 12:50:14,883 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-12-02 12:50:14,892 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states. [2018-12-02 12:50:14,896 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2018-12-02 12:50:14,896 INFO L394 BasicCegarLoop]: Found error trace [2018-12-02 12:50:14,897 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-02 12:50:14,898 INFO L423 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-02 12:50:14,901 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-02 12:50:14,901 INFO L82 PathProgramCache]: Analyzing trace with hash -1775699146, now seen corresponding path program 1 times [2018-12-02 12:50:14,904 INFO L223 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-12-02 12:50:14,904 INFO L69 tionRefinementEngine]: Using refinement strategy WalrusRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_02051ad5-8c9f-4447-9158-3c09f102d681/bin-2019/utaipan/mathsat Starting monitored process 2 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with mathsat -unsat_core_generation=3 [2018-12-02 12:50:14,909 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-02 12:50:15,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-02 12:50:15,028 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-02 12:50:15,039 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-02 12:50:15,039 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-12-02 12:50:15,050 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-12-02 12:50:15,050 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-12-02 12:50:15,053 INFO L459 AbstractCegarLoop]: Interpolant automaton has 2 states [2018-12-02 12:50:15,060 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2018-12-02 12:50:15,061 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-12-02 12:50:15,062 INFO L87 Difference]: Start difference. First operand 54 states. Second operand 2 states. [2018-12-02 12:50:15,077 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-02 12:50:15,077 INFO L93 Difference]: Finished difference Result 100 states and 142 transitions. [2018-12-02 12:50:15,077 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2018-12-02 12:50:15,078 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 18 [2018-12-02 12:50:15,078 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-02 12:50:15,083 INFO L225 Difference]: With dead ends: 100 [2018-12-02 12:50:15,084 INFO L226 Difference]: Without dead ends: 50 [2018-12-02 12:50:15,085 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-12-02 12:50:15,096 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50 states. [2018-12-02 12:50:15,106 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50 to 50. [2018-12-02 12:50:15,107 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 50 states. [2018-12-02 12:50:15,108 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 61 transitions. [2018-12-02 12:50:15,109 INFO L78 Accepts]: Start accepts. Automaton has 50 states and 61 transitions. Word has length 18 [2018-12-02 12:50:15,109 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-02 12:50:15,109 INFO L480 AbstractCegarLoop]: Abstraction has 50 states and 61 transitions. [2018-12-02 12:50:15,109 INFO L481 AbstractCegarLoop]: Interpolant automaton has 2 states. [2018-12-02 12:50:15,109 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 61 transitions. [2018-12-02 12:50:15,110 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2018-12-02 12:50:15,110 INFO L394 BasicCegarLoop]: Found error trace [2018-12-02 12:50:15,110 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-02 12:50:15,110 INFO L423 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-02 12:50:15,110 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-02 12:50:15,110 INFO L82 PathProgramCache]: Analyzing trace with hash 1046652015, now seen corresponding path program 1 times [2018-12-02 12:50:15,111 INFO L223 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-12-02 12:50:15,111 INFO L69 tionRefinementEngine]: Using refinement strategy WalrusRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_02051ad5-8c9f-4447-9158-3c09f102d681/bin-2019/utaipan/mathsat Starting monitored process 3 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with mathsat -unsat_core_generation=3 [2018-12-02 12:50:15,114 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-02 12:50:15,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-02 12:50:15,222 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-02 12:50:15,308 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-02 12:50:15,308 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-12-02 12:50:15,317 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-12-02 12:50:15,317 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2018-12-02 12:50:15,318 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-12-02 12:50:15,319 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-12-02 12:50:15,319 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2018-12-02 12:50:15,319 INFO L87 Difference]: Start difference. First operand 50 states and 61 transitions. Second operand 7 states. [2018-12-02 12:50:23,789 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-02 12:50:23,789 INFO L93 Difference]: Finished difference Result 68 states and 79 transitions. [2018-12-02 12:50:23,838 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-12-02 12:50:23,838 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 19 [2018-12-02 12:50:23,838 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-02 12:50:23,840 INFO L225 Difference]: With dead ends: 68 [2018-12-02 12:50:23,840 INFO L226 Difference]: Without dead ends: 51 [2018-12-02 12:50:23,841 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2018-12-02 12:50:23,841 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51 states. [2018-12-02 12:50:23,845 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51 to 48. [2018-12-02 12:50:23,845 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 48 states. [2018-12-02 12:50:23,846 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48 states to 48 states and 56 transitions. [2018-12-02 12:50:23,846 INFO L78 Accepts]: Start accepts. Automaton has 48 states and 56 transitions. Word has length 19 [2018-12-02 12:50:23,846 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-02 12:50:23,847 INFO L480 AbstractCegarLoop]: Abstraction has 48 states and 56 transitions. [2018-12-02 12:50:23,847 INFO L481 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-12-02 12:50:23,847 INFO L276 IsEmpty]: Start isEmpty. Operand 48 states and 56 transitions. [2018-12-02 12:50:23,847 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2018-12-02 12:50:23,847 INFO L394 BasicCegarLoop]: Found error trace [2018-12-02 12:50:23,847 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-02 12:50:23,848 INFO L423 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-02 12:50:23,848 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-02 12:50:23,848 INFO L82 PathProgramCache]: Analyzing trace with hash 1727555058, now seen corresponding path program 1 times [2018-12-02 12:50:23,848 INFO L223 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-12-02 12:50:23,848 INFO L69 tionRefinementEngine]: Using refinement strategy WalrusRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_02051ad5-8c9f-4447-9158-3c09f102d681/bin-2019/utaipan/mathsat Starting monitored process 4 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with mathsat -unsat_core_generation=3 [2018-12-02 12:50:23,853 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-02 12:50:23,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-02 12:50:23,956 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-02 12:50:24,004 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-02 12:50:24,005 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-12-02 12:50:24,013 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-12-02 12:50:24,013 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2018-12-02 12:50:24,014 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-12-02 12:50:24,014 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-12-02 12:50:24,014 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2018-12-02 12:50:24,014 INFO L87 Difference]: Start difference. First operand 48 states and 56 transitions. Second operand 7 states. [2018-12-02 12:50:33,258 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-02 12:50:33,258 INFO L93 Difference]: Finished difference Result 56 states and 64 transitions. [2018-12-02 12:50:33,258 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-12-02 12:50:33,259 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 21 [2018-12-02 12:50:33,259 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-02 12:50:33,259 INFO L225 Difference]: With dead ends: 56 [2018-12-02 12:50:33,259 INFO L226 Difference]: Without dead ends: 53 [2018-12-02 12:50:33,260 INFO L631 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 [2018-12-02 12:50:33,260 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53 states. [2018-12-02 12:50:33,264 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53 to 52. [2018-12-02 12:50:33,264 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 52 states. [2018-12-02 12:50:33,265 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 60 transitions. [2018-12-02 12:50:33,265 INFO L78 Accepts]: Start accepts. Automaton has 52 states and 60 transitions. Word has length 21 [2018-12-02 12:50:33,265 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-02 12:50:33,265 INFO L480 AbstractCegarLoop]: Abstraction has 52 states and 60 transitions. [2018-12-02 12:50:33,265 INFO L481 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-12-02 12:50:33,266 INFO L276 IsEmpty]: Start isEmpty. Operand 52 states and 60 transitions. [2018-12-02 12:50:33,266 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2018-12-02 12:50:33,266 INFO L394 BasicCegarLoop]: Found error trace [2018-12-02 12:50:33,266 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-02 12:50:33,266 INFO L423 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-02 12:50:33,267 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-02 12:50:33,267 INFO L82 PathProgramCache]: Analyzing trace with hash -225183980, now seen corresponding path program 1 times [2018-12-02 12:50:33,267 INFO L223 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-12-02 12:50:33,267 INFO L69 tionRefinementEngine]: Using refinement strategy WalrusRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_02051ad5-8c9f-4447-9158-3c09f102d681/bin-2019/utaipan/mathsat Starting monitored process 5 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with mathsat -unsat_core_generation=3 [2018-12-02 12:50:33,271 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-02 12:50:34,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-02 12:50:34,210 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-02 12:50:34,282 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-02 12:50:34,282 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-12-02 12:50:34,302 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-12-02 12:50:34,303 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2018-12-02 12:50:34,303 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-12-02 12:50:34,303 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-12-02 12:50:34,303 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2018-12-02 12:50:34,303 INFO L87 Difference]: Start difference. First operand 52 states and 60 transitions. Second operand 7 states. [2018-12-02 12:50:41,215 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-02 12:50:41,216 INFO L93 Difference]: Finished difference Result 73 states and 83 transitions. [2018-12-02 12:50:41,266 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2018-12-02 12:50:41,266 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 23 [2018-12-02 12:50:41,267 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-02 12:50:41,267 INFO L225 Difference]: With dead ends: 73 [2018-12-02 12:50:41,267 INFO L226 Difference]: Without dead ends: 39 [2018-12-02 12:50:41,268 INFO L631 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 [2018-12-02 12:50:41,268 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39 states. [2018-12-02 12:50:41,270 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 39. [2018-12-02 12:50:41,270 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39 states. [2018-12-02 12:50:41,271 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 42 transitions. [2018-12-02 12:50:41,271 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 42 transitions. Word has length 23 [2018-12-02 12:50:41,271 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-02 12:50:41,271 INFO L480 AbstractCegarLoop]: Abstraction has 39 states and 42 transitions. [2018-12-02 12:50:41,272 INFO L481 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-12-02 12:50:41,272 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 42 transitions. [2018-12-02 12:50:41,272 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2018-12-02 12:50:41,272 INFO L394 BasicCegarLoop]: Found error trace [2018-12-02 12:50:41,272 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-02 12:50:41,272 INFO L423 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-02 12:50:41,273 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-02 12:50:41,273 INFO L82 PathProgramCache]: Analyzing trace with hash 1139373451, now seen corresponding path program 1 times [2018-12-02 12:50:41,273 INFO L223 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-12-02 12:50:41,273 INFO L69 tionRefinementEngine]: Using refinement strategy WalrusRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_02051ad5-8c9f-4447-9158-3c09f102d681/bin-2019/utaipan/mathsat Starting monitored process 6 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with mathsat -unsat_core_generation=3 [2018-12-02 12:50:41,277 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-02 12:50:42,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-02 12:50:42,243 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-02 12:50:42,879 WARN L180 SmtUtils]: Spent 244.00 ms on a formula simplification that was a NOOP. DAG size: 16 [2018-12-02 12:50:42,884 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-02 12:50:42,884 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-12-02 12:50:42,902 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-12-02 12:50:42,902 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-12-02 12:50:42,902 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-12-02 12:50:42,902 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-12-02 12:50:42,902 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-12-02 12:50:42,903 INFO L87 Difference]: Start difference. First operand 39 states and 42 transitions. Second operand 6 states. [2018-12-02 12:50:43,866 WARN L180 SmtUtils]: Spent 420.00 ms on a formula simplification that was a NOOP. DAG size: 18 [2018-12-02 12:50:47,924 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-02 12:50:47,924 INFO L93 Difference]: Finished difference Result 50 states and 52 transitions. [2018-12-02 12:50:47,928 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-12-02 12:50:47,928 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 24 [2018-12-02 12:50:47,928 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-02 12:50:47,929 INFO L225 Difference]: With dead ends: 50 [2018-12-02 12:50:47,929 INFO L226 Difference]: Without dead ends: 30 [2018-12-02 12:50:47,929 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 18 SyntacticMatches, 1 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2018-12-02 12:50:47,929 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states. [2018-12-02 12:50:47,931 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 30. [2018-12-02 12:50:47,931 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2018-12-02 12:50:47,931 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 29 transitions. [2018-12-02 12:50:47,932 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 29 transitions. Word has length 24 [2018-12-02 12:50:47,932 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-02 12:50:47,932 INFO L480 AbstractCegarLoop]: Abstraction has 30 states and 29 transitions. [2018-12-02 12:50:47,932 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-12-02 12:50:47,932 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 29 transitions. [2018-12-02 12:50:47,932 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2018-12-02 12:50:47,932 INFO L394 BasicCegarLoop]: Found error trace [2018-12-02 12:50:47,932 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-02 12:50:47,932 INFO L423 AbstractCegarLoop]: === Iteration 6 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-02 12:50:47,932 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-02 12:50:47,933 INFO L82 PathProgramCache]: Analyzing trace with hash -267271278, now seen corresponding path program 1 times [2018-12-02 12:50:47,933 INFO L223 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-12-02 12:50:47,933 INFO L69 tionRefinementEngine]: Using refinement strategy WalrusRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_02051ad5-8c9f-4447-9158-3c09f102d681/bin-2019/utaipan/mathsat Starting monitored process 7 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with mathsat -unsat_core_generation=3 [2018-12-02 12:50:47,936 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-02 12:50:48,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-02 12:50:48,043 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-02 12:50:48,193 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-02 12:50:48,193 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-12-02 12:50:48,201 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-12-02 12:50:48,202 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2018-12-02 12:50:48,202 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2018-12-02 12:50:48,202 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2018-12-02 12:50:48,202 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=111, Unknown=0, NotChecked=0, Total=132 [2018-12-02 12:50:48,202 INFO L87 Difference]: Start difference. First operand 30 states and 29 transitions. Second operand 12 states. [2018-12-02 12:50:48,624 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-02 12:50:48,624 INFO L93 Difference]: Finished difference Result 30 states and 29 transitions. [2018-12-02 12:50:48,624 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2018-12-02 12:50:48,624 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 29 [2018-12-02 12:50:48,625 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-02 12:50:48,625 INFO L225 Difference]: With dead ends: 30 [2018-12-02 12:50:48,625 INFO L226 Difference]: Without dead ends: 0 [2018-12-02 12:50:48,625 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=51, Invalid=255, Unknown=0, NotChecked=0, Total=306 [2018-12-02 12:50:48,625 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2018-12-02 12:50:48,625 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2018-12-02 12:50:48,625 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2018-12-02 12:50:48,625 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2018-12-02 12:50:48,626 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 29 [2018-12-02 12:50:48,626 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-02 12:50:48,626 INFO L480 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2018-12-02 12:50:48,626 INFO L481 AbstractCegarLoop]: Interpolant automaton has 12 states. [2018-12-02 12:50:48,626 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2018-12-02 12:50:48,626 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2018-12-02 12:50:48,629 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2018-12-02 12:50:48,828 INFO L448 ceAbstractionStarter]: For program point ULTIMATE.initFINAL(line -1) no Hoare annotation was computed. [2018-12-02 12:50:48,828 INFO L451 ceAbstractionStarter]: At program point ULTIMATE.initENTRY(line -1) the Hoare annotation is: true [2018-12-02 12:50:48,828 INFO L448 ceAbstractionStarter]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2018-12-02 12:50:48,828 INFO L448 ceAbstractionStarter]: For program point fabs_floatFINAL(lines 14 27) no Hoare annotation was computed. [2018-12-02 12:50:48,828 INFO L448 ceAbstractionStarter]: For program point fabs_floatEXIT(lines 14 27) no Hoare annotation was computed. [2018-12-02 12:50:48,828 INFO L451 ceAbstractionStarter]: At program point fabs_floatENTRY(lines 14 27) the Hoare annotation is: true [2018-12-02 12:50:48,828 INFO L448 ceAbstractionStarter]: For program point L21(lines 21 25) no Hoare annotation was computed. [2018-12-02 12:50:48,829 INFO L448 ceAbstractionStarter]: For program point L21-1(lines 14 27) no Hoare annotation was computed. [2018-12-02 12:50:48,829 INFO L448 ceAbstractionStarter]: For program point L21-2(lines 21 25) no Hoare annotation was computed. [2018-12-02 12:50:48,829 INFO L448 ceAbstractionStarter]: For program point L16-1(lines 16 20) no Hoare annotation was computed. [2018-12-02 12:50:48,829 INFO L451 ceAbstractionStarter]: At program point L16-2(lines 16 20) the Hoare annotation is: true [2018-12-02 12:50:48,829 INFO L448 ceAbstractionStarter]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2018-12-02 12:50:48,829 INFO L444 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)))) [2018-12-02 12:50:48,829 INFO L451 ceAbstractionStarter]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2018-12-02 12:50:48,829 INFO L448 ceAbstractionStarter]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2018-12-02 12:50:48,829 INFO L448 ceAbstractionStarter]: For program point mainErr0ASSERT_VIOLATIONERROR_FUNCTION(line 142) no Hoare annotation was computed. [2018-12-02 12:50:48,829 INFO L451 ceAbstractionStarter]: At program point mainENTRY(lines 129 147) the Hoare annotation is: true [2018-12-02 12:50:48,830 INFO L448 ceAbstractionStarter]: For program point mainEXIT(lines 129 147) no Hoare annotation was computed. [2018-12-02 12:50:48,830 INFO L448 ceAbstractionStarter]: For program point L142(line 142) no Hoare annotation was computed. [2018-12-02 12:50:48,830 INFO L448 ceAbstractionStarter]: For program point L141(line 141) no Hoare annotation was computed. [2018-12-02 12:50:48,830 INFO L448 ceAbstractionStarter]: For program point mainFINAL(lines 129 147) no Hoare annotation was computed. [2018-12-02 12:50:48,830 INFO L444 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))))) [2018-12-02 12:50:48,830 INFO L448 ceAbstractionStarter]: For program point L141-2(line 141) no Hoare annotation was computed. [2018-12-02 12:50:48,830 INFO L444 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)) [2018-12-02 12:50:48,830 INFO L448 ceAbstractionStarter]: For program point L138-1(line 138) no Hoare annotation was computed. [2018-12-02 12:50:48,830 INFO L448 ceAbstractionStarter]: For program point L141-4(lines 141 144) no Hoare annotation was computed. [2018-12-02 12:50:48,830 INFO L448 ceAbstractionStarter]: For program point __signbit_floatFINAL(lines 117 127) no Hoare annotation was computed. [2018-12-02 12:50:48,830 INFO L448 ceAbstractionStarter]: For program point L120-1(lines 120 124) no Hoare annotation was computed. [2018-12-02 12:50:48,831 INFO L444 ceAbstractionStarter]: At program point L120-2(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))))) [2018-12-02 12:50:48,831 INFO L448 ceAbstractionStarter]: For program point L120-3(lines 120 124) no Hoare annotation was computed. [2018-12-02 12:50:48,831 INFO L451 ceAbstractionStarter]: At program point __signbit_floatENTRY(lines 117 127) the Hoare annotation is: true [2018-12-02 12:50:48,831 INFO L448 ceAbstractionStarter]: For program point __signbit_floatEXIT(lines 117 127) no Hoare annotation was computed. [2018-12-02 12:50:48,831 INFO L448 ceAbstractionStarter]: For program point L64(lines 64 65) no Hoare annotation was computed. [2018-12-02 12:50:48,831 INFO L451 ceAbstractionStarter]: At program point atan_floatENTRY(lines 53 115) the Hoare annotation is: true [2018-12-02 12:50:48,831 INFO L448 ceAbstractionStarter]: For program point atan_floatFINAL(lines 53 115) no Hoare annotation was computed. [2018-12-02 12:50:48,831 INFO L448 ceAbstractionStarter]: For program point L73(lines 73 74) no Hoare annotation was computed. [2018-12-02 12:50:48,831 INFO L448 ceAbstractionStarter]: For program point L57-1(lines 57 61) no Hoare annotation was computed. [2018-12-02 12:50:48,831 INFO L444 ceAbstractionStarter]: At program point L57-2(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))))) [2018-12-02 12:50:48,831 INFO L448 ceAbstractionStarter]: For program point L57-3(lines 57 61) no Hoare annotation was computed. [2018-12-02 12:50:48,832 INFO L444 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))))) [2018-12-02 12:50:48,832 INFO L448 ceAbstractionStarter]: For program point L78-1(line 78) no Hoare annotation was computed. [2018-12-02 12:50:48,832 INFO L448 ceAbstractionStarter]: For program point L66(lines 66 69) no Hoare annotation was computed. [2018-12-02 12:50:48,832 INFO L448 ceAbstractionStarter]: For program point L79(lines 79 95) no Hoare annotation was computed. [2018-12-02 12:50:48,832 INFO L448 ceAbstractionStarter]: For program point L71(lines 71 96) no Hoare annotation was computed. [2018-12-02 12:50:48,832 INFO L448 ceAbstractionStarter]: For program point atan_floatEXIT(lines 53 115) no Hoare annotation was computed. [2018-12-02 12:50:48,832 INFO L448 ceAbstractionStarter]: For program point L63(lines 63 70) no Hoare annotation was computed. [2018-12-02 12:50:48,832 INFO L448 ceAbstractionStarter]: For program point L88(lines 88 94) no Hoare annotation was computed. [2018-12-02 12:50:48,832 INFO L448 ceAbstractionStarter]: For program point L88-2(lines 71 96) no Hoare annotation was computed. [2018-12-02 12:50:48,832 INFO L448 ceAbstractionStarter]: For program point L113(line 113) no Hoare annotation was computed. [2018-12-02 12:50:48,832 INFO L448 ceAbstractionStarter]: For program point L80(lines 80 86) no Hoare annotation was computed. [2018-12-02 12:50:48,832 INFO L448 ceAbstractionStarter]: For program point L113-2(line 113) no Hoare annotation was computed. [2018-12-02 12:50:48,833 INFO L448 ceAbstractionStarter]: For program point L109(lines 109 114) no Hoare annotation was computed. [2018-12-02 12:50:48,833 INFO L448 ceAbstractionStarter]: For program point L72(lines 72 75) no Hoare annotation was computed. [2018-12-02 12:50:48,833 INFO L448 ceAbstractionStarter]: For program point L72-2(lines 72 75) no Hoare annotation was computed. [2018-12-02 12:50:48,839 WARN L416 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2018-12-02 12:50:48,839 WARN L416 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2018-12-02 12:50:48,839 WARN L416 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2018-12-02 12:50:48,840 WARN L416 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2018-12-02 12:50:48,841 WARN L416 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2018-12-02 12:50:48,841 WARN L416 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2018-12-02 12:50:48,841 WARN L416 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2018-12-02 12:50:48,841 WARN L416 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2018-12-02 12:50:48,842 WARN L416 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2018-12-02 12:50:48,842 WARN L416 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2018-12-02 12:50:48,842 WARN L416 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2018-12-02 12:50:48,843 WARN L416 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2018-12-02 12:50:48,843 WARN L416 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2018-12-02 12:50:48,843 WARN L416 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2018-12-02 12:50:48,843 WARN L416 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2018-12-02 12:50:48,844 WARN L416 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2018-12-02 12:50:48,845 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 02.12 12:50:48 BoogieIcfgContainer [2018-12-02 12:50:48,845 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-12-02 12:50:48,845 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2018-12-02 12:50:48,845 INFO L271 PluginConnector]: Initializing Witness Printer... [2018-12-02 12:50:48,845 INFO L276 PluginConnector]: Witness Printer initialized [2018-12-02 12:50:48,845 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 12:50:14" (3/4) ... [2018-12-02 12:50:48,848 INFO L144 WitnessPrinter]: Generating witness for correct program [2018-12-02 12:50:48,852 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure ULTIMATE.init [2018-12-02 12:50:48,852 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure fabs_float [2018-12-02 12:50:48,852 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure main [2018-12-02 12:50:48,852 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure __signbit_float [2018-12-02 12:50:48,852 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure atan_float [2018-12-02 12:50:48,857 INFO L905 BoogieBacktranslator]: Reduced CFG by removing 35 nodes and edges [2018-12-02 12:50:48,857 INFO L905 BoogieBacktranslator]: Reduced CFG by removing 15 nodes and edges [2018-12-02 12:50:48,857 INFO L905 BoogieBacktranslator]: Reduced CFG by removing 6 nodes and edges [2018-12-02 12:50:48,857 INFO L905 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2018-12-02 12:50:48,874 WARN L221 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))) [2018-12-02 12:50:48,874 WARN L221 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))) [2018-12-02 12:50:48,898 INFO L145 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/working_dir_02051ad5-8c9f-4447-9158-3c09f102d681/bin-2019/utaipan/witness.graphml [2018-12-02 12:50:48,898 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2018-12-02 12:50:48,898 INFO L168 Benchmark]: Toolchain (without parser) took 42921.85 ms. Allocated memory was 1.0 GB in the beginning and 1.3 GB in the end (delta: 235.9 MB). Free memory was 944.7 MB in the beginning and 877.9 MB in the end (delta: 66.8 MB). Peak memory consumption was 302.7 MB. Max. memory is 11.5 GB. [2018-12-02 12:50:48,899 INFO L168 Benchmark]: CDTParser took 0.12 ms. Allocated memory is still 1.0 GB. Free memory is still 972.9 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-12-02 12:50:48,899 INFO L168 Benchmark]: CACSL2BoogieTranslator took 182.16 ms. Allocated memory is still 1.0 GB. Free memory was 944.7 MB in the beginning and 928.6 MB in the end (delta: 16.1 MB). Peak memory consumption was 16.1 MB. Max. memory is 11.5 GB. [2018-12-02 12:50:48,899 INFO L168 Benchmark]: Boogie Procedure Inliner took 25.98 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 36.2 MB). Free memory was 928.6 MB in the beginning and 1.0 GB in the end (delta: -85.8 MB). Peak memory consumption was 12.1 MB. Max. memory is 11.5 GB. [2018-12-02 12:50:48,899 INFO L168 Benchmark]: Boogie Preprocessor took 53.79 ms. Allocated memory was 1.1 GB in the beginning and 1.3 GB in the end (delta: 199.8 MB). Free memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: -217.2 MB). Peak memory consumption was 8.2 kB. Max. memory is 11.5 GB. [2018-12-02 12:50:48,900 INFO L168 Benchmark]: RCFGBuilder took 8595.49 ms. Allocated memory is still 1.3 GB. Free memory was 1.2 GB in the beginning and 1.2 GB in the end (delta: 50.9 MB). Peak memory consumption was 50.9 MB. Max. memory is 11.5 GB. [2018-12-02 12:50:48,900 INFO L168 Benchmark]: TraceAbstraction took 34008.45 ms. Allocated memory is still 1.3 GB. Free memory was 1.2 GB in the beginning and 877.9 MB in the end (delta: 302.7 MB). Peak memory consumption was 302.7 MB. Max. memory is 11.5 GB. [2018-12-02 12:50:48,900 INFO L168 Benchmark]: Witness Printer took 52.90 ms. Allocated memory is still 1.3 GB. Free memory is still 877.9 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-12-02 12:50:48,902 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.12 ms. Allocated memory is still 1.0 GB. Free memory is still 972.9 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 182.16 ms. Allocated memory is still 1.0 GB. Free memory was 944.7 MB in the beginning and 928.6 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 25.98 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 36.2 MB). Free memory was 928.6 MB in the beginning and 1.0 GB in the end (delta: -85.8 MB). Peak memory consumption was 12.1 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 53.79 ms. Allocated memory was 1.1 GB in the beginning and 1.3 GB in the end (delta: 199.8 MB). Free memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: -217.2 MB). Peak memory consumption was 8.2 kB. Max. memory is 11.5 GB. * RCFGBuilder took 8595.49 ms. Allocated memory is still 1.3 GB. Free memory was 1.2 GB in the beginning and 1.2 GB in the end (delta: 50.9 MB). Peak memory consumption was 50.9 MB. Max. memory is 11.5 GB. * TraceAbstraction took 34008.45 ms. Allocated memory is still 1.3 GB. Free memory was 1.2 GB in the beginning and 877.9 MB in the end (delta: 302.7 MB). Peak memory consumption was 302.7 MB. Max. memory is 11.5 GB. * Witness Printer took 52.90 ms. Allocated memory is still 1.3 GB. Free memory is still 877.9 MB. There was no memory consumed. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.boogie.preprocessor: - GenericResult: Unfinished Backtranslation Unfinished backtranslation: 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: 16]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 57]: Loop Invariant [2018-12-02 12:50:48,904 WARN L416 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2018-12-02 12:50:48,905 WARN L416 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2018-12-02 12:50:48,905 WARN L416 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2018-12-02 12:50:48,905 WARN L416 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2018-12-02 12:50:48,905 WARN L416 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2018-12-02 12:50:48,905 WARN L416 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2018-12-02 12:50:48,905 WARN L416 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2018-12-02 12:50:48,905 WARN L416 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: 120]: Loop Invariant [2018-12-02 12:50:48,906 WARN L416 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2018-12-02 12:50:48,906 WARN L416 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2018-12-02 12:50:48,906 WARN L416 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2018-12-02 12:50:48,906 WARN L416 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2018-12-02 12:50:48,906 WARN L416 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2018-12-02 12:50:48,907 WARN L416 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2018-12-02 12:50:48,907 WARN L416 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2018-12-02 12:50:48,907 WARN L416 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, 33.9s OverallTime, 6 OverallIterations, 1 TraceHistogramMax, 30.2s AutomataDifference, 0.0s DeadEndRemovalTime, 0.1s HoareAnnotationTime, HoareTripleCheckerStatistics: 243 SDtfs, 187 SDslu, 754 SDs, 0 SdLazy, 299 SolverSat, 21 SolverUnsat, 4 SolverUnknown, 0 SolverNotchecked, 27.6s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 146 GetRequests, 98 SyntacticMatches, 1 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 1.9s 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, 818 ConjunctsInSsa, 46 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...