./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/floats-esbmc-regression/Float_div_true-unreach-call.i --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_3dc4d2f1-f13e-4816-bba3-d067174c13d6/bin-2019/utaipan/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/working_dir_3dc4d2f1-f13e-4816-bba3-d067174c13d6/bin-2019/utaipan/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/working_dir_3dc4d2f1-f13e-4816-bba3-d067174c13d6/bin-2019/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/working_dir_3dc4d2f1-f13e-4816-bba3-d067174c13d6/bin-2019/utaipan/config/TaipanReach.xml -i ../../sv-benchmarks/c/floats-esbmc-regression/Float_div_true-unreach-call.i -s /tmp/vcloud-vcloud-master/worker/working_dir_3dc4d2f1-f13e-4816-bba3-d067174c13d6/bin-2019/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/working_dir_3dc4d2f1-f13e-4816-bba3-d067174c13d6/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 c9c4c4712c0b03f250e94d62f797a284bfa7b46f ............................................................................................................................................................................................................................................... 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_3dc4d2f1-f13e-4816-bba3-d067174c13d6/bin-2019/utaipan/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/working_dir_3dc4d2f1-f13e-4816-bba3-d067174c13d6/bin-2019/utaipan/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/working_dir_3dc4d2f1-f13e-4816-bba3-d067174c13d6/bin-2019/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/working_dir_3dc4d2f1-f13e-4816-bba3-d067174c13d6/bin-2019/utaipan/config/TaipanReach.xml -i ../../sv-benchmarks/c/floats-esbmc-regression/Float_div_true-unreach-call.i -s /tmp/vcloud-vcloud-master/worker/working_dir_3dc4d2f1-f13e-4816-bba3-d067174c13d6/bin-2019/utaipan/config/svcomp-Reach-32bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/working_dir_3dc4d2f1-f13e-4816-bba3-d067174c13d6/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 c9c4c4712c0b03f250e94d62f797a284bfa7b46f ............................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................. Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.1.23-635dfa2 [2018-12-09 19:12:54,492 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-12-09 19:12:54,493 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-12-09 19:12:54,499 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-12-09 19:12:54,499 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-12-09 19:12:54,499 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-12-09 19:12:54,500 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-12-09 19:12:54,501 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-12-09 19:12:54,502 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-12-09 19:12:54,503 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-12-09 19:12:54,504 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-12-09 19:12:54,504 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-12-09 19:12:54,505 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-12-09 19:12:54,505 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-12-09 19:12:54,506 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-12-09 19:12:54,507 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-12-09 19:12:54,507 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-12-09 19:12:54,508 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-12-09 19:12:54,510 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-12-09 19:12:54,511 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-12-09 19:12:54,512 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-12-09 19:12:54,512 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-12-09 19:12:54,514 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-12-09 19:12:54,514 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-12-09 19:12:54,515 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-12-09 19:12:54,515 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-12-09 19:12:54,516 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-12-09 19:12:54,517 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-12-09 19:12:54,517 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-12-09 19:12:54,518 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-12-09 19:12:54,518 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-12-09 19:12:54,519 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-12-09 19:12:54,519 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-12-09 19:12:54,519 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-12-09 19:12:54,520 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-12-09 19:12:54,520 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-12-09 19:12:54,520 INFO L98 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/working_dir_3dc4d2f1-f13e-4816-bba3-d067174c13d6/bin-2019/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf [2018-12-09 19:12:54,530 INFO L110 SettingsManager]: Loading preferences was successful [2018-12-09 19:12:54,531 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-12-09 19:12:54,531 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-12-09 19:12:54,531 INFO L133 SettingsManager]: * ... calls to implemented procedures=ONLY_FOR_CONCURRENT_PROGRAMS [2018-12-09 19:12:54,532 INFO L133 SettingsManager]: * User list type=DISABLED [2018-12-09 19:12:54,532 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-12-09 19:12:54,532 INFO L133 SettingsManager]: * Explicit value domain=true [2018-12-09 19:12:54,532 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-12-09 19:12:54,532 INFO L133 SettingsManager]: * Octagon Domain=false [2018-12-09 19:12:54,532 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-12-09 19:12:54,533 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-12-09 19:12:54,533 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-12-09 19:12:54,533 INFO L133 SettingsManager]: * Interval Domain=false [2018-12-09 19:12:54,533 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-12-09 19:12:54,534 INFO L133 SettingsManager]: * sizeof long=4 [2018-12-09 19:12:54,534 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-12-09 19:12:54,534 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-12-09 19:12:54,534 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-12-09 19:12:54,534 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-12-09 19:12:54,534 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-12-09 19:12:54,535 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-12-09 19:12:54,535 INFO L133 SettingsManager]: * sizeof long double=12 [2018-12-09 19:12:54,535 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-12-09 19:12:54,535 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-12-09 19:12:54,535 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-12-09 19:12:54,535 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-12-09 19:12:54,535 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-12-09 19:12:54,535 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-12-09 19:12:54,536 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-12-09 19:12:54,536 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-12-09 19:12:54,536 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-12-09 19:12:54,536 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-12-09 19:12:54,536 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-12-09 19:12:54,536 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-12-09 19:12:54,536 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-12-09 19:12:54,536 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-12-09 19:12:54,536 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_3dc4d2f1-f13e-4816-bba3-d067174c13d6/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 -> c9c4c4712c0b03f250e94d62f797a284bfa7b46f [2018-12-09 19:12:54,558 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-12-09 19:12:54,567 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-12-09 19:12:54,569 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-12-09 19:12:54,570 INFO L271 PluginConnector]: Initializing CDTParser... [2018-12-09 19:12:54,571 INFO L276 PluginConnector]: CDTParser initialized [2018-12-09 19:12:54,571 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/working_dir_3dc4d2f1-f13e-4816-bba3-d067174c13d6/bin-2019/utaipan/../../sv-benchmarks/c/floats-esbmc-regression/Float_div_true-unreach-call.i [2018-12-09 19:12:54,612 INFO L221 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_3dc4d2f1-f13e-4816-bba3-d067174c13d6/bin-2019/utaipan/data/4ac16b4cb/0105fd9ecd0742d19a9307e721a1980d/FLAG71f893875 [2018-12-09 19:12:54,920 INFO L307 CDTParser]: Found 1 translation units. [2018-12-09 19:12:54,921 INFO L161 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/working_dir_3dc4d2f1-f13e-4816-bba3-d067174c13d6/sv-benchmarks/c/floats-esbmc-regression/Float_div_true-unreach-call.i [2018-12-09 19:12:54,924 INFO L355 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_3dc4d2f1-f13e-4816-bba3-d067174c13d6/bin-2019/utaipan/data/4ac16b4cb/0105fd9ecd0742d19a9307e721a1980d/FLAG71f893875 [2018-12-09 19:12:55,345 INFO L363 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/working_dir_3dc4d2f1-f13e-4816-bba3-d067174c13d6/bin-2019/utaipan/data/4ac16b4cb/0105fd9ecd0742d19a9307e721a1980d [2018-12-09 19:12:55,348 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-12-09 19:12:55,349 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2018-12-09 19:12:55,350 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-12-09 19:12:55,350 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-12-09 19:12:55,352 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-12-09 19:12:55,353 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.12 07:12:55" (1/1) ... [2018-12-09 19:12:55,355 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@409ee820 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 07:12:55, skipping insertion in model container [2018-12-09 19:12:55,355 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.12 07:12:55" (1/1) ... [2018-12-09 19:12:55,361 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-12-09 19:12:55,371 INFO L176 MainTranslator]: Built tables and reachable declarations [2018-12-09 19:12:55,454 INFO L203 PostProcessor]: Analyzing one entry point: main [2018-12-09 19:12:55,456 INFO L191 MainTranslator]: Completed pre-run [2018-12-09 19:12:55,464 INFO L203 PostProcessor]: Analyzing one entry point: main [2018-12-09 19:12:55,472 INFO L195 MainTranslator]: Completed translation [2018-12-09 19:12:55,472 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 07:12:55 WrapperNode [2018-12-09 19:12:55,472 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-12-09 19:12:55,473 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-12-09 19:12:55,473 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-12-09 19:12:55,473 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-12-09 19:12:55,477 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 07:12:55" (1/1) ... [2018-12-09 19:12:55,480 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 07:12:55" (1/1) ... [2018-12-09 19:12:55,484 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-12-09 19:12:55,484 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-12-09 19:12:55,484 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-12-09 19:12:55,484 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-12-09 19:12:55,489 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 07:12:55" (1/1) ... [2018-12-09 19:12:55,490 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 07:12:55" (1/1) ... [2018-12-09 19:12:55,490 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 07:12:55" (1/1) ... [2018-12-09 19:12:55,490 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 07:12:55" (1/1) ... [2018-12-09 19:12:55,493 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 07:12:55" (1/1) ... [2018-12-09 19:12:55,523 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 07:12:55" (1/1) ... [2018-12-09 19:12:55,524 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 07:12:55" (1/1) ... [2018-12-09 19:12:55,525 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-12-09 19:12:55,525 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-12-09 19:12:55,525 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-12-09 19:12:55,525 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-12-09 19:12:55,526 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 07:12:55" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_3dc4d2f1-f13e-4816-bba3-d067174c13d6/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 [2018-12-09 19:12:55,557 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-12-09 19:12:55,557 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-12-09 19:12:55,557 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-12-09 19:12:55,557 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-12-09 19:12:55,558 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-12-09 19:12:55,558 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-12-09 19:12:55,558 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2018-12-09 19:12:55,558 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2018-12-09 19:12:55,632 INFO L275 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-12-09 19:12:55,632 INFO L280 CfgBuilder]: Removed 1 assue(true) statements. [2018-12-09 19:12:55,632 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.12 07:12:55 BoogieIcfgContainer [2018-12-09 19:12:55,632 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-12-09 19:12:55,633 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-12-09 19:12:55,633 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-12-09 19:12:55,634 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-12-09 19:12:55,635 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 09.12 07:12:55" (1/3) ... [2018-12-09 19:12:55,635 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@55ba8eb0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.12 07:12:55, skipping insertion in model container [2018-12-09 19:12:55,635 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 07:12:55" (2/3) ... [2018-12-09 19:12:55,635 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@55ba8eb0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.12 07:12:55, skipping insertion in model container [2018-12-09 19:12:55,635 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.12 07:12:55" (3/3) ... [2018-12-09 19:12:55,636 INFO L112 eAbstractionObserver]: Analyzing ICFG Float_div_true-unreach-call.i [2018-12-09 19:12:55,642 INFO L156 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-12-09 19:12:55,646 INFO L168 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-12-09 19:12:55,655 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-12-09 19:12:55,673 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-12-09 19:12:55,673 INFO L383 AbstractCegarLoop]: Hoare is true [2018-12-09 19:12:55,673 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-12-09 19:12:55,673 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-12-09 19:12:55,673 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-12-09 19:12:55,673 INFO L387 AbstractCegarLoop]: Difference is false [2018-12-09 19:12:55,674 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-12-09 19:12:55,674 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-12-09 19:12:55,684 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states. [2018-12-09 19:12:55,687 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2018-12-09 19:12:55,687 INFO L394 BasicCegarLoop]: Found error trace [2018-12-09 19:12:55,687 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-09 19:12:55,689 INFO L423 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-09 19:12:55,692 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-09 19:12:55,692 INFO L82 PathProgramCache]: Analyzing trace with hash -14991171, now seen corresponding path program 1 times [2018-12-09 19:12:55,693 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-12-09 19:12:55,721 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-09 19:12:55,721 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-09 19:12:55,721 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-09 19:12:55,721 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-12-09 19:12:55,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-12-09 19:12:55,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-12-09 19:12:55,756 INFO L469 BasicCegarLoop]: Counterexample might be feasible [2018-12-09 19:12:55,769 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 09.12 07:12:55 BoogieIcfgContainer [2018-12-09 19:12:55,769 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-12-09 19:12:55,769 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2018-12-09 19:12:55,769 INFO L271 PluginConnector]: Initializing Witness Printer... [2018-12-09 19:12:55,769 INFO L276 PluginConnector]: Witness Printer initialized [2018-12-09 19:12:55,770 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.12 07:12:55" (3/4) ... [2018-12-09 19:12:55,772 INFO L147 WitnessPrinter]: No result that supports witness generation found [2018-12-09 19:12:55,772 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2018-12-09 19:12:55,773 INFO L168 Benchmark]: Toolchain (without parser) took 424.28 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 93.8 MB). Free memory was 951.3 MB in the beginning and 1.1 GB in the end (delta: -117.3 MB). There was no memory consumed. Max. memory is 11.5 GB. [2018-12-09 19:12:55,774 INFO L168 Benchmark]: CDTParser took 0.16 ms. Allocated memory is still 1.0 GB. Free memory is still 973.3 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-12-09 19:12:55,774 INFO L168 Benchmark]: CACSL2BoogieTranslator took 122.67 ms. Allocated memory is still 1.0 GB. Free memory was 951.3 MB in the beginning and 940.6 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. [2018-12-09 19:12:55,774 INFO L168 Benchmark]: Boogie Procedure Inliner took 11.46 ms. Allocated memory is still 1.0 GB. Free memory is still 940.6 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-12-09 19:12:55,775 INFO L168 Benchmark]: Boogie Preprocessor took 40.88 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 93.8 MB). Free memory was 940.6 MB in the beginning and 1.1 GB in the end (delta: -151.5 MB). Peak memory consumption was 12.6 MB. Max. memory is 11.5 GB. [2018-12-09 19:12:55,775 INFO L168 Benchmark]: RCFGBuilder took 107.05 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 12.7 MB). Peak memory consumption was 12.7 MB. Max. memory is 11.5 GB. [2018-12-09 19:12:55,776 INFO L168 Benchmark]: TraceAbstraction took 136.35 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. [2018-12-09 19:12:55,776 INFO L168 Benchmark]: Witness Printer took 2.98 ms. Allocated memory is still 1.1 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. [2018-12-09 19:12:55,778 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.16 ms. Allocated memory is still 1.0 GB. Free memory is still 973.3 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 122.67 ms. Allocated memory is still 1.0 GB. Free memory was 951.3 MB in the beginning and 940.6 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 11.46 ms. Allocated memory is still 1.0 GB. Free memory is still 940.6 MB. There was no memory consumed. Max. memory is 11.5 GB. * Boogie Preprocessor took 40.88 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 93.8 MB). Free memory was 940.6 MB in the beginning and 1.1 GB in the end (delta: -151.5 MB). Peak memory consumption was 12.6 MB. Max. memory is 11.5 GB. * RCFGBuilder took 107.05 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 12.7 MB). Peak memory consumption was 12.7 MB. Max. memory is 11.5 GB. * TraceAbstraction took 136.35 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. * Witness Printer took 2.98 ms. Allocated memory is still 1.1 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 2]: Unable to prove that call of __VERIFIER_error() unreachable Unable to prove that call of __VERIFIER_error() unreachable Reason: overapproximation of someBinaryFLOATComparisonOperation at line 18, overapproximation of someBinaryArithmeticFLOAToperation at line 10. Possible FailurePath: [L9] float x = 1.0f; [L10] float x1 = x/2.5f; VAL [x=1] [L12] COND FALSE !(x1 != x) VAL [x=1] [L18] CALL __VERIFIER_assert(x == 0) VAL [\old(cond)=0] [L2] COND TRUE !(cond) VAL [\old(cond)=0, cond=0] [L2] __VERIFIER_error() VAL [\old(cond)=0, cond=0] - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 18 locations, 1 error locations. UNSAFE Result, 0.1s OverallTime, 1 OverallIterations, 1 TraceHistogramMax, 0.0s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: No data available, PredicateUnifierStatistics: No data available, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=18occurred 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: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 10 NumberOfCodeBlocks, 10 NumberOfCodeBlocksAsserted, 1 NumberOfCheckSat, 0 ConstructedInterpolants, 0 QuantifiedInterpolants, 0 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 0 InterpolantComputations, 0 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 [2018-12-09 19:12:57,109 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-12-09 19:12:57,110 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-12-09 19:12:57,117 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-12-09 19:12:57,117 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-12-09 19:12:57,118 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-12-09 19:12:57,119 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-12-09 19:12:57,120 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-12-09 19:12:57,121 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-12-09 19:12:57,121 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-12-09 19:12:57,122 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-12-09 19:12:57,122 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-12-09 19:12:57,123 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-12-09 19:12:57,123 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-12-09 19:12:57,124 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-12-09 19:12:57,125 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-12-09 19:12:57,125 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-12-09 19:12:57,126 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-12-09 19:12:57,128 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-12-09 19:12:57,129 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-12-09 19:12:57,129 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-12-09 19:12:57,130 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-12-09 19:12:57,132 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-12-09 19:12:57,132 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-12-09 19:12:57,132 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-12-09 19:12:57,133 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-12-09 19:12:57,134 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-12-09 19:12:57,134 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-12-09 19:12:57,135 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-12-09 19:12:57,135 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-12-09 19:12:57,136 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-12-09 19:12:57,136 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-12-09 19:12:57,136 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-12-09 19:12:57,136 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-12-09 19:12:57,137 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-12-09 19:12:57,137 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-12-09 19:12:57,137 INFO L98 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/working_dir_3dc4d2f1-f13e-4816-bba3-d067174c13d6/bin-2019/utaipan/config/svcomp-Reach-32bit-Taipan_Bitvector.epf [2018-12-09 19:12:57,145 INFO L110 SettingsManager]: Loading preferences was successful [2018-12-09 19:12:57,145 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-12-09 19:12:57,146 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-12-09 19:12:57,146 INFO L133 SettingsManager]: * ... calls to implemented procedures=ONLY_FOR_CONCURRENT_PROGRAMS [2018-12-09 19:12:57,146 INFO L133 SettingsManager]: * User list type=DISABLED [2018-12-09 19:12:57,146 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-12-09 19:12:57,146 INFO L133 SettingsManager]: * Explicit value domain=true [2018-12-09 19:12:57,146 INFO L133 SettingsManager]: * Octagon Domain=false [2018-12-09 19:12:57,146 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-12-09 19:12:57,146 INFO L133 SettingsManager]: * Interval Domain=false [2018-12-09 19:12:57,147 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-12-09 19:12:57,147 INFO L133 SettingsManager]: * sizeof long=4 [2018-12-09 19:12:57,147 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-12-09 19:12:57,147 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-12-09 19:12:57,147 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-12-09 19:12:57,147 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-12-09 19:12:57,147 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-12-09 19:12:57,147 INFO L133 SettingsManager]: * Use bitvectors instead of ints=true [2018-12-09 19:12:57,147 INFO L133 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2018-12-09 19:12:57,147 INFO L133 SettingsManager]: * sizeof long double=12 [2018-12-09 19:12:57,147 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-12-09 19:12:57,148 INFO L133 SettingsManager]: * Use constant arrays=true [2018-12-09 19:12:57,148 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-12-09 19:12:57,148 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-12-09 19:12:57,148 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-12-09 19:12:57,148 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-12-09 19:12:57,148 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-12-09 19:12:57,148 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-12-09 19:12:57,148 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-12-09 19:12:57,148 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-12-09 19:12:57,148 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-12-09 19:12:57,148 INFO L133 SettingsManager]: * Trace refinement strategy=WALRUS [2018-12-09 19:12:57,148 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-12-09 19:12:57,148 INFO L133 SettingsManager]: * Command for external solver=cvc4 --incremental --rewrite-divk --print-success --lang smt [2018-12-09 19:12:57,149 INFO L133 SettingsManager]: * Logic for external solver=AUFBV [2018-12-09 19:12:57,149 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_3dc4d2f1-f13e-4816-bba3-d067174c13d6/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 -> c9c4c4712c0b03f250e94d62f797a284bfa7b46f [2018-12-09 19:12:57,167 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-12-09 19:12:57,176 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-12-09 19:12:57,179 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-12-09 19:12:57,180 INFO L271 PluginConnector]: Initializing CDTParser... [2018-12-09 19:12:57,180 INFO L276 PluginConnector]: CDTParser initialized [2018-12-09 19:12:57,181 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/working_dir_3dc4d2f1-f13e-4816-bba3-d067174c13d6/bin-2019/utaipan/../../sv-benchmarks/c/floats-esbmc-regression/Float_div_true-unreach-call.i [2018-12-09 19:12:57,226 INFO L221 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_3dc4d2f1-f13e-4816-bba3-d067174c13d6/bin-2019/utaipan/data/0ececb729/4b06b90b77cb498fa7dc204223f0ee21/FLAG7300b21a9 [2018-12-09 19:12:57,614 INFO L307 CDTParser]: Found 1 translation units. [2018-12-09 19:12:57,615 INFO L161 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/working_dir_3dc4d2f1-f13e-4816-bba3-d067174c13d6/sv-benchmarks/c/floats-esbmc-regression/Float_div_true-unreach-call.i [2018-12-09 19:12:57,618 INFO L355 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_3dc4d2f1-f13e-4816-bba3-d067174c13d6/bin-2019/utaipan/data/0ececb729/4b06b90b77cb498fa7dc204223f0ee21/FLAG7300b21a9 [2018-12-09 19:12:57,626 INFO L363 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/working_dir_3dc4d2f1-f13e-4816-bba3-d067174c13d6/bin-2019/utaipan/data/0ececb729/4b06b90b77cb498fa7dc204223f0ee21 [2018-12-09 19:12:57,628 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-12-09 19:12:57,629 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2018-12-09 19:12:57,629 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-12-09 19:12:57,629 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-12-09 19:12:57,632 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-12-09 19:12:57,632 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.12 07:12:57" (1/1) ... [2018-12-09 19:12:57,634 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5c5a08fc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 07:12:57, skipping insertion in model container [2018-12-09 19:12:57,634 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.12 07:12:57" (1/1) ... [2018-12-09 19:12:57,638 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-12-09 19:12:57,648 INFO L176 MainTranslator]: Built tables and reachable declarations [2018-12-09 19:12:57,737 INFO L203 PostProcessor]: Analyzing one entry point: main [2018-12-09 19:12:57,741 INFO L191 MainTranslator]: Completed pre-run [2018-12-09 19:12:57,749 INFO L203 PostProcessor]: Analyzing one entry point: main [2018-12-09 19:12:57,758 INFO L195 MainTranslator]: Completed translation [2018-12-09 19:12:57,758 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 07:12:57 WrapperNode [2018-12-09 19:12:57,758 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-12-09 19:12:57,759 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-12-09 19:12:57,759 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-12-09 19:12:57,759 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-12-09 19:12:57,764 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 07:12:57" (1/1) ... [2018-12-09 19:12:57,767 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 07:12:57" (1/1) ... [2018-12-09 19:12:57,771 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-12-09 19:12:57,771 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-12-09 19:12:57,772 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-12-09 19:12:57,772 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-12-09 19:12:57,777 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 07:12:57" (1/1) ... [2018-12-09 19:12:57,777 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 07:12:57" (1/1) ... [2018-12-09 19:12:57,778 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 07:12:57" (1/1) ... [2018-12-09 19:12:57,778 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 07:12:57" (1/1) ... [2018-12-09 19:12:57,782 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 07:12:57" (1/1) ... [2018-12-09 19:12:57,784 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 07:12:57" (1/1) ... [2018-12-09 19:12:57,785 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 07:12:57" (1/1) ... [2018-12-09 19:12:57,786 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-12-09 19:12:57,786 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-12-09 19:12:57,787 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-12-09 19:12:57,787 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-12-09 19:12:57,787 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 07:12:57" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_3dc4d2f1-f13e-4816-bba3-d067174c13d6/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 [2018-12-09 19:12:57,852 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-12-09 19:12:57,852 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-12-09 19:12:57,852 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-12-09 19:12:57,852 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-12-09 19:12:57,852 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-12-09 19:12:57,852 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-12-09 19:12:57,852 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2018-12-09 19:12:57,852 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2018-12-09 19:12:58,285 INFO L275 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-12-09 19:12:58,286 INFO L280 CfgBuilder]: Removed 1 assue(true) statements. [2018-12-09 19:12:58,286 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.12 07:12:58 BoogieIcfgContainer [2018-12-09 19:12:58,286 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-12-09 19:12:58,286 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-12-09 19:12:58,286 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-12-09 19:12:58,288 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-12-09 19:12:58,288 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 09.12 07:12:57" (1/3) ... [2018-12-09 19:12:58,289 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6eab192e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.12 07:12:58, skipping insertion in model container [2018-12-09 19:12:58,289 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 07:12:57" (2/3) ... [2018-12-09 19:12:58,289 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6eab192e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.12 07:12:58, skipping insertion in model container [2018-12-09 19:12:58,289 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.12 07:12:58" (3/3) ... [2018-12-09 19:12:58,290 INFO L112 eAbstractionObserver]: Analyzing ICFG Float_div_true-unreach-call.i [2018-12-09 19:12:58,295 INFO L156 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-12-09 19:12:58,299 INFO L168 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-12-09 19:12:58,308 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-12-09 19:12:58,325 INFO L133 ementStrategyFactory]: Using default assertion order modulation [2018-12-09 19:12:58,325 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-12-09 19:12:58,325 INFO L383 AbstractCegarLoop]: Hoare is true [2018-12-09 19:12:58,325 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-12-09 19:12:58,325 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-12-09 19:12:58,325 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-12-09 19:12:58,325 INFO L387 AbstractCegarLoop]: Difference is false [2018-12-09 19:12:58,326 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-12-09 19:12:58,326 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-12-09 19:12:58,335 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states. [2018-12-09 19:12:58,338 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2018-12-09 19:12:58,338 INFO L394 BasicCegarLoop]: Found error trace [2018-12-09 19:12:58,338 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-09 19:12:58,340 INFO L423 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-09 19:12:58,342 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-09 19:12:58,343 INFO L82 PathProgramCache]: Analyzing trace with hash -14991171, now seen corresponding path program 1 times [2018-12-09 19:12:58,345 INFO L223 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-12-09 19:12:58,345 INFO L69 tionRefinementEngine]: Using refinement strategy WalrusRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_3dc4d2f1-f13e-4816-bba3-d067174c13d6/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 [2018-12-09 19:12:58,349 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-09 19:12:58,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-09 19:12:58,407 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-09 19:12:58,995 WARN L180 SmtUtils]: Spent 399.00 ms on a formula simplification that was a NOOP. DAG size: 11 [2018-12-09 19:12:59,001 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-09 19:12:59,002 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-12-09 19:12:59,010 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-12-09 19:12:59,010 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-12-09 19:12:59,012 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-12-09 19:12:59,020 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-12-09 19:12:59,020 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-12-09 19:12:59,021 INFO L87 Difference]: Start difference. First operand 18 states. Second operand 3 states. [2018-12-09 19:12:59,188 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-09 19:12:59,188 INFO L93 Difference]: Finished difference Result 31 states and 36 transitions. [2018-12-09 19:12:59,189 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-12-09 19:12:59,190 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 10 [2018-12-09 19:12:59,190 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-09 19:12:59,194 INFO L225 Difference]: With dead ends: 31 [2018-12-09 19:12:59,194 INFO L226 Difference]: Without dead ends: 12 [2018-12-09 19:12:59,197 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 7 SyntacticMatches, 1 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-12-09 19:12:59,210 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12 states. [2018-12-09 19:12:59,220 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12 to 12. [2018-12-09 19:12:59,221 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2018-12-09 19:12:59,221 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 12 transitions. [2018-12-09 19:12:59,222 INFO L78 Accepts]: Start accepts. Automaton has 12 states and 12 transitions. Word has length 10 [2018-12-09 19:12:59,222 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-09 19:12:59,222 INFO L480 AbstractCegarLoop]: Abstraction has 12 states and 12 transitions. [2018-12-09 19:12:59,223 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-12-09 19:12:59,223 INFO L276 IsEmpty]: Start isEmpty. Operand 12 states and 12 transitions. [2018-12-09 19:12:59,223 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2018-12-09 19:12:59,223 INFO L394 BasicCegarLoop]: Found error trace [2018-12-09 19:12:59,223 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-09 19:12:59,223 INFO L423 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-09 19:12:59,224 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-09 19:12:59,224 INFO L82 PathProgramCache]: Analyzing trace with hash -429188558, now seen corresponding path program 1 times [2018-12-09 19:12:59,224 INFO L223 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-12-09 19:12:59,224 INFO L69 tionRefinementEngine]: Using refinement strategy WalrusRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_3dc4d2f1-f13e-4816-bba3-d067174c13d6/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 [2018-12-09 19:12:59,227 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-09 19:12:59,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-09 19:12:59,311 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-09 19:12:59,943 WARN L180 SmtUtils]: Spent 409.00 ms on a formula simplification that was a NOOP. DAG size: 12 [2018-12-09 19:12:59,946 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-09 19:12:59,946 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-12-09 19:13:02,359 WARN L180 SmtUtils]: Spent 263.00 ms on a formula simplification that was a NOOP. DAG size: 7 [2018-12-09 19:13:02,367 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-09 19:13:02,374 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-12-09 19:13:02,374 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FPBP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_3dc4d2f1-f13e-4816-bba3-d067174c13d6/bin-2019/utaipan/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-12-09 19:13:02,380 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-09 19:13:02,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-09 19:13:02,822 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-09 19:13:02,826 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-09 19:13:02,826 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-12-09 19:13:11,919 WARN L180 SmtUtils]: Spent 2.14 s on a formula simplification that was a NOOP. DAG size: 11 [2018-12-09 19:13:11,926 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-09 19:13:11,950 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 4 imperfect interpolant sequences. [2018-12-09 19:13:11,950 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4, 7] total 11 [2018-12-09 19:13:11,951 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2018-12-09 19:13:11,951 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2018-12-09 19:13:11,951 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=81, Unknown=1, NotChecked=0, Total=110 [2018-12-09 19:13:11,952 INFO L87 Difference]: Start difference. First operand 12 states and 12 transitions. Second operand 11 states. [2018-12-09 19:13:17,216 WARN L180 SmtUtils]: Spent 1.51 s on a formula simplification that was a NOOP. DAG size: 11 [2018-12-09 19:13:23,022 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-09 19:13:23,022 INFO L93 Difference]: Finished difference Result 20 states and 22 transitions. [2018-12-09 19:13:23,023 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-12-09 19:13:23,023 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 11 [2018-12-09 19:13:23,023 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-09 19:13:23,023 INFO L225 Difference]: With dead ends: 20 [2018-12-09 19:13:23,023 INFO L226 Difference]: Without dead ends: 15 [2018-12-09 19:13:23,024 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 29 SyntacticMatches, 4 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 16.0s TimeCoverageRelationStatistics Valid=43, Invalid=112, Unknown=1, NotChecked=0, Total=156 [2018-12-09 19:13:23,024 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15 states. [2018-12-09 19:13:23,027 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15 to 15. [2018-12-09 19:13:23,027 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2018-12-09 19:13:23,028 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 15 transitions. [2018-12-09 19:13:23,028 INFO L78 Accepts]: Start accepts. Automaton has 15 states and 15 transitions. Word has length 11 [2018-12-09 19:13:23,028 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-09 19:13:23,028 INFO L480 AbstractCegarLoop]: Abstraction has 15 states and 15 transitions. [2018-12-09 19:13:23,029 INFO L481 AbstractCegarLoop]: Interpolant automaton has 11 states. [2018-12-09 19:13:23,029 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states and 15 transitions. [2018-12-09 19:13:23,029 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2018-12-09 19:13:23,029 INFO L394 BasicCegarLoop]: Found error trace [2018-12-09 19:13:23,029 INFO L402 BasicCegarLoop]: trace histogram [4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-09 19:13:23,030 INFO L423 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-09 19:13:23,030 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-09 19:13:23,030 INFO L82 PathProgramCache]: Analyzing trace with hash 1090549245, now seen corresponding path program 2 times [2018-12-09 19:13:23,031 INFO L223 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-12-09 19:13:23,031 INFO L69 tionRefinementEngine]: Using refinement strategy WalrusRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_3dc4d2f1-f13e-4816-bba3-d067174c13d6/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 [2018-12-09 19:13:23,034 INFO L101 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2018-12-09 19:13:23,214 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-12-09 19:13:23,214 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-12-09 19:13:23,227 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-09 19:13:23,766 WARN L180 SmtUtils]: Spent 320.00 ms on a formula simplification that was a NOOP. DAG size: 15 [2018-12-09 19:13:23,769 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-09 19:13:23,769 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-12-09 19:13:29,792 WARN L180 SmtUtils]: Spent 1.04 s on a formula simplification that was a NOOP. DAG size: 11 [2018-12-09 19:13:55,015 WARN L180 SmtUtils]: Spent 7.12 s on a formula simplification that was a NOOP. DAG size: 12 [2018-12-09 19:13:57,082 WARN L832 $PredicateComparison]: unable to prove that (let ((.cse1 ((_ to_fp 8 24) roundNearestTiesToEven (/ 5.0 2.0)))) (let ((.cse0 (fp.div roundNearestTiesToEven (fp.div roundNearestTiesToEven c_main_~x1~0 .cse1) .cse1))) (or (fp.eq .cse0 ((_ to_fp 8 24) roundNearestTiesToEven (_ bv0 32))) (not (fp.eq (fp.div roundNearestTiesToEven .cse0 .cse1) .cse0))))) is different from false [2018-12-09 19:14:02,358 WARN L854 $PredicateComparison]: unable to prove that (let ((.cse1 ((_ to_fp 8 24) roundNearestTiesToEven (/ 5.0 2.0)))) (let ((.cse0 (fp.div roundNearestTiesToEven (fp.div roundNearestTiesToEven (fp.div roundNearestTiesToEven c_main_~x1~0 .cse1) .cse1) .cse1))) (or (not (fp.eq (fp.div roundNearestTiesToEven .cse0 .cse1) .cse0)) (fp.eq .cse0 ((_ to_fp 8 24) roundNearestTiesToEven (_ bv0 32)))))) is different from true [2018-12-09 19:14:02,365 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 2 refuted. 1 times theorem prover too weak. 0 trivial. 7 not checked. [2018-12-09 19:14:02,374 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-12-09 19:14:02,374 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FPBP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_3dc4d2f1-f13e-4816-bba3-d067174c13d6/bin-2019/utaipan/z3 Starting monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-12-09 19:14:02,379 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-12-09 19:14:03,929 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-12-09 19:14:03,929 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-12-09 19:14:04,009 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-09 19:14:04,598 WARN L180 SmtUtils]: Spent 432.00 ms on a formula simplification that was a NOOP. DAG size: 12 [2018-12-09 19:14:05,887 WARN L180 SmtUtils]: Spent 891.00 ms on a formula simplification. DAG size of input: 15 DAG size of output: 13 [2018-12-09 19:14:07,262 WARN L180 SmtUtils]: Spent 1.19 s on a formula simplification. DAG size of input: 16 DAG size of output: 14 [2018-12-09 19:14:07,465 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-09 19:14:07,465 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-12-09 19:14:18,798 WARN L180 SmtUtils]: Spent 6.14 s on a formula simplification that was a NOOP. DAG size: 13 [2018-12-09 19:14:20,851 WARN L832 $PredicateComparison]: unable to prove that (let ((.cse1 ((_ to_fp 8 24) roundNearestTiesToEven (/ 5.0 2.0)))) (let ((.cse0 (fp.div roundNearestTiesToEven c_main_~x1~0 .cse1))) (or (fp.eq c_main_~x1~0 c_main_~x~0) (fp.eq .cse0 ((_ to_fp 8 24) roundNearestTiesToEven (_ bv0 32))) (fp.eq .cse0 c_main_~x1~0) (not (fp.eq (fp.div roundNearestTiesToEven .cse0 .cse1) .cse0))))) is different from false [2018-12-09 19:14:22,897 WARN L854 $PredicateComparison]: unable to prove that (let ((.cse1 ((_ to_fp 8 24) roundNearestTiesToEven (/ 5.0 2.0)))) (let ((.cse0 (fp.div roundNearestTiesToEven c_main_~x1~0 .cse1))) (or (fp.eq c_main_~x1~0 c_main_~x~0) (fp.eq .cse0 ((_ to_fp 8 24) roundNearestTiesToEven (_ bv0 32))) (fp.eq .cse0 c_main_~x1~0) (not (fp.eq (fp.div roundNearestTiesToEven .cse0 .cse1) .cse0))))) is different from true [2018-12-09 19:14:26,143 WARN L854 $PredicateComparison]: unable to prove that (let ((.cse2 ((_ to_fp 8 24) roundNearestTiesToEven (/ 5.0 2.0)))) (let ((.cse1 (fp.div roundNearestTiesToEven c_main_~x1~0 .cse2))) (let ((.cse0 (fp.div roundNearestTiesToEven .cse1 .cse2))) (or (fp.eq c_main_~x1~0 c_main_~x~0) (fp.eq .cse0 ((_ to_fp 8 24) roundNearestTiesToEven (_ bv0 32))) (fp.eq .cse0 .cse1) (not (fp.eq (fp.div roundNearestTiesToEven .cse0 .cse2) .cse0)) (fp.eq .cse1 c_main_~x1~0))))) is different from true [2018-12-09 19:14:28,240 WARN L832 $PredicateComparison]: unable to prove that (let ((.cse1 ((_ to_fp 8 24) roundNearestTiesToEven (/ 5.0 2.0)))) (let ((.cse3 (fp.div roundNearestTiesToEven c_main_~x1~0 .cse1))) (let ((.cse2 (fp.div roundNearestTiesToEven .cse3 .cse1))) (let ((.cse0 (fp.div roundNearestTiesToEven .cse2 .cse1))) (or (not (fp.eq (fp.div roundNearestTiesToEven .cse0 .cse1) .cse0)) (fp.eq .cse0 .cse2) (fp.eq .cse2 .cse3) (fp.eq .cse0 ((_ to_fp 8 24) roundNearestTiesToEven (_ bv0 32))) (fp.eq .cse3 c_main_~x1~0)))))) is different from false [2018-12-09 19:14:30,333 WARN L854 $PredicateComparison]: unable to prove that (let ((.cse1 ((_ to_fp 8 24) roundNearestTiesToEven (/ 5.0 2.0)))) (let ((.cse3 (fp.div roundNearestTiesToEven c_main_~x1~0 .cse1))) (let ((.cse2 (fp.div roundNearestTiesToEven .cse3 .cse1))) (let ((.cse0 (fp.div roundNearestTiesToEven .cse2 .cse1))) (or (not (fp.eq (fp.div roundNearestTiesToEven .cse0 .cse1) .cse0)) (fp.eq .cse0 .cse2) (fp.eq .cse2 .cse3) (fp.eq .cse0 ((_ to_fp 8 24) roundNearestTiesToEven (_ bv0 32))) (fp.eq .cse3 c_main_~x1~0)))))) is different from true [2018-12-09 19:14:30,342 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 9 not checked. [2018-12-09 19:14:30,378 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 4 imperfect interpolant sequences. [2018-12-09 19:14:30,378 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 10, 7, 10] total 22 [2018-12-09 19:14:30,378 INFO L459 AbstractCegarLoop]: Interpolant automaton has 22 states [2018-12-09 19:14:30,378 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2018-12-09 19:14:30,379 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=76, Invalid=206, Unknown=10, NotChecked=170, Total=462 [2018-12-09 19:14:30,379 INFO L87 Difference]: Start difference. First operand 15 states and 15 transitions. Second operand 22 states. [2018-12-09 19:14:32,467 WARN L832 $PredicateComparison]: unable to prove that (let ((.cse6 ((_ to_fp 8 24) roundNearestTiesToEven (/ 5.0 2.0)))) (let ((.cse4 (fp.div roundNearestTiesToEven c_main_~x1~0 .cse6))) (let ((.cse3 (fp.div roundNearestTiesToEven .cse4 .cse6))) (let ((.cse0 ((_ to_fp 8 24) roundNearestTiesToEven (_ bv0 32))) (.cse2 (fp.div roundNearestTiesToEven .cse3 .cse6))) (let ((.cse1 (not (fp.eq (fp.div roundNearestTiesToEven .cse2 .cse6) .cse2))) (.cse5 (fp.eq .cse2 .cse0))) (and (or (fp.eq c_main_~x~0 .cse0) (not (fp.eq c_main_~x1~0 c_main_~x~0))) (or .cse1 (fp.eq .cse2 .cse3) (fp.eq .cse3 .cse4) .cse5 (fp.eq .cse4 c_main_~x1~0)) (= c_main_~x1~0 (fp.div roundNearestTiesToEven ((_ to_fp 8 24) roundNearestTiesToEven 1.0) .cse6)) (or .cse1 .cse5))))))) is different from false [2018-12-09 19:14:37,810 WARN L854 $PredicateComparison]: unable to prove that (let ((.cse0 ((_ to_fp 8 24) roundNearestTiesToEven (/ 5.0 2.0)))) (let ((.cse3 (fp.div roundNearestTiesToEven c_main_~x1~0 .cse0))) (let ((.cse2 (fp.div roundNearestTiesToEven .cse3 .cse0))) (let ((.cse1 (fp.eq .cse2 ((_ to_fp 8 24) roundNearestTiesToEven (_ bv0 32)))) (.cse4 (not (fp.eq (fp.div roundNearestTiesToEven .cse2 .cse0) .cse2)))) (and (= c_main_~x1~0 (fp.div roundNearestTiesToEven c_main_~x~0 .cse0)) (or (fp.eq c_main_~x1~0 c_main_~x~0) .cse1 (fp.eq .cse2 .cse3) .cse4 (fp.eq .cse3 c_main_~x1~0)) (= c_main_~x~0 (fp.div roundNearestTiesToEven ((_ to_fp 8 24) roundNearestTiesToEven 1.0) .cse0)) (or .cse1 .cse4)))))) is different from true [2018-12-09 19:15:02,368 WARN L180 SmtUtils]: Spent 4.72 s on a formula simplification that was a NOOP. DAG size: 17 [2018-12-09 19:15:22,240 WARN L180 SmtUtils]: Spent 8.32 s on a formula simplification that was a NOOP. DAG size: 15 [2018-12-09 19:15:36,868 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-09 19:15:36,868 INFO L93 Difference]: Finished difference Result 26 states and 28 transitions. [2018-12-09 19:15:36,868 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2018-12-09 19:15:36,868 INFO L78 Accepts]: Start accepts. Automaton has 22 states. Word has length 14 [2018-12-09 19:15:36,868 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-09 19:15:36,869 INFO L225 Difference]: With dead ends: 26 [2018-12-09 19:15:36,869 INFO L226 Difference]: Without dead ends: 18 [2018-12-09 19:15:36,869 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 29 SyntacticMatches, 6 SemanticMatches, 25 ConstructedPredicates, 7 IntricatePredicates, 0 DeprecatedPredicates, 53 ImplicationChecksByTransitivity, 112.3s TimeCoverageRelationStatistics Valid=101, Invalid=293, Unknown=14, NotChecked=294, Total=702 [2018-12-09 19:15:36,869 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18 states. [2018-12-09 19:15:36,872 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18 to 18. [2018-12-09 19:15:36,872 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2018-12-09 19:15:36,872 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 18 transitions. [2018-12-09 19:15:36,873 INFO L78 Accepts]: Start accepts. Automaton has 18 states and 18 transitions. Word has length 14 [2018-12-09 19:15:36,873 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-09 19:15:36,873 INFO L480 AbstractCegarLoop]: Abstraction has 18 states and 18 transitions. [2018-12-09 19:15:36,873 INFO L481 AbstractCegarLoop]: Interpolant automaton has 22 states. [2018-12-09 19:15:36,873 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 18 transitions. [2018-12-09 19:15:36,873 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2018-12-09 19:15:36,873 INFO L394 BasicCegarLoop]: Found error trace [2018-12-09 19:15:36,874 INFO L402 BasicCegarLoop]: trace histogram [7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-09 19:15:36,874 INFO L423 AbstractCegarLoop]: === Iteration 4 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-09 19:15:36,874 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-09 19:15:36,874 INFO L82 PathProgramCache]: Analyzing trace with hash -1945796014, now seen corresponding path program 3 times [2018-12-09 19:15:36,874 INFO L223 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-12-09 19:15:36,874 INFO L69 tionRefinementEngine]: Using refinement strategy WalrusRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_3dc4d2f1-f13e-4816-bba3-d067174c13d6/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 [2018-12-09 19:15:36,878 INFO L101 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2018-12-09 19:15:37,074 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2018-12-09 19:15:37,074 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-12-09 19:15:37,086 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-09 19:15:37,638 WARN L180 SmtUtils]: Spent 276.00 ms on a formula simplification that was a NOOP. DAG size: 7 [2018-12-09 19:15:47,353 WARN L180 SmtUtils]: Spent 6.11 s on a formula simplification that was a NOOP. DAG size: 15 [2018-12-09 19:15:49,401 WARN L832 $PredicateComparison]: unable to prove that (and (exists ((v_main_~x~0_24 (_ FloatingPoint 8 24))) (let ((.cse0 (fp.div roundNearestTiesToEven v_main_~x~0_24 ((_ to_fp 8 24) roundNearestTiesToEven (/ 5.0 2.0))))) (and (not (fp.eq .cse0 v_main_~x~0_24)) (= .cse0 c_main_~x~0)))) (fp.eq (fp.div roundNearestTiesToEven c_main_~x~0 ((_ to_fp 8 24) roundNearestTiesToEven (/ 5.0 2.0))) c_main_~x~0)) is different from false [2018-12-09 19:16:12,529 WARN L180 SmtUtils]: Spent 10.77 s on a formula simplification that was a NOOP. DAG size: 22 [2018-12-09 19:16:37,119 WARN L180 SmtUtils]: Spent 11.53 s on a formula simplification that was a NOOP. DAG size: 22 [2018-12-09 19:16:43,265 WARN L832 $PredicateComparison]: unable to prove that (exists ((v_main_~x~0_24 (_ FloatingPoint 8 24))) (let ((.cse1 ((_ to_fp 8 24) roundNearestTiesToEven (/ 5.0 2.0)))) (let ((.cse0 (fp.div roundNearestTiesToEven v_main_~x~0_24 .cse1))) (and (not (fp.eq .cse0 ((_ to_fp 8 24) roundNearestTiesToEven (_ bv0 32)))) (not (fp.eq .cse0 v_main_~x~0_24)) (fp.eq (fp.div roundNearestTiesToEven .cse0 .cse1) .cse0))))) is different from false [2018-12-09 19:16:45,307 WARN L854 $PredicateComparison]: unable to prove that (exists ((v_main_~x~0_24 (_ FloatingPoint 8 24))) (let ((.cse1 ((_ to_fp 8 24) roundNearestTiesToEven (/ 5.0 2.0)))) (let ((.cse0 (fp.div roundNearestTiesToEven v_main_~x~0_24 .cse1))) (and (not (fp.eq .cse0 ((_ to_fp 8 24) roundNearestTiesToEven (_ bv0 32)))) (not (fp.eq .cse0 v_main_~x~0_24)) (fp.eq (fp.div roundNearestTiesToEven .cse0 .cse1) .cse0))))) is different from true [2018-12-09 19:16:45,309 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2018-12-09 19:16:45,309 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-12-09 19:16:45,318 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-12-09 19:16:45,318 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2018-12-09 19:16:45,319 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2018-12-09 19:16:45,319 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2018-12-09 19:16:45,319 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=15, Unknown=9, NotChecked=18, Total=56 [2018-12-09 19:16:45,319 INFO L87 Difference]: Start difference. First operand 18 states and 18 transitions. Second operand 8 states. [2018-12-09 19:17:28,152 WARN L180 SmtUtils]: Spent 31.91 s on a formula simplification that was a NOOP. DAG size: 29 [2018-12-09 19:17:30,230 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-09 19:17:30,230 INFO L93 Difference]: Finished difference Result 18 states and 18 transitions. [2018-12-09 19:17:30,277 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-12-09 19:17:30,277 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 17 [2018-12-09 19:17:30,278 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-09 19:17:30,278 INFO L225 Difference]: With dead ends: 18 [2018-12-09 19:17:30,278 INFO L226 Difference]: Without dead ends: 0 [2018-12-09 19:17:30,278 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 2 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 91.3s TimeCoverageRelationStatistics Valid=18, Invalid=22, Unknown=10, NotChecked=22, Total=72 [2018-12-09 19:17:30,278 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2018-12-09 19:17:30,278 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2018-12-09 19:17:30,278 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2018-12-09 19:17:30,279 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2018-12-09 19:17:30,279 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 17 [2018-12-09 19:17:30,279 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-09 19:17:30,279 INFO L480 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2018-12-09 19:17:30,279 INFO L481 AbstractCegarLoop]: Interpolant automaton has 8 states. [2018-12-09 19:17:30,279 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2018-12-09 19:17:30,279 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2018-12-09 19:17:30,282 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2018-12-09 19:17:30,450 WARN L180 SmtUtils]: Spent 119.00 ms on a formula simplification. DAG size of input: 29 DAG size of output: 1 [2018-12-09 19:18:19,309 WARN L180 SmtUtils]: Spent 48.86 s on a formula simplification that was a NOOP. DAG size: 31 [2018-12-09 19:18:25,101 WARN L180 SmtUtils]: Spent 5.79 s on a formula simplification that was a NOOP. DAG size: 15 [2018-12-09 19:18:25,103 INFO L451 ceAbstractionStarter]: At program point ULTIMATE.initFINAL(line -1) the Hoare annotation is: true [2018-12-09 19:18:25,103 INFO L448 ceAbstractionStarter]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2018-12-09 19:18:25,103 INFO L448 ceAbstractionStarter]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2018-12-09 19:18:25,103 INFO L451 ceAbstractionStarter]: At program point L-1(line -1) the Hoare annotation is: true [2018-12-09 19:18:25,103 INFO L451 ceAbstractionStarter]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2018-12-09 19:18:25,103 INFO L448 ceAbstractionStarter]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2018-12-09 19:18:25,103 INFO L451 ceAbstractionStarter]: At program point mainENTRY(lines 7 20) the Hoare annotation is: true [2018-12-09 19:18:25,103 INFO L448 ceAbstractionStarter]: For program point mainEXIT(lines 7 20) no Hoare annotation was computed. [2018-12-09 19:18:25,103 INFO L448 ceAbstractionStarter]: For program point L18(line 18) no Hoare annotation was computed. [2018-12-09 19:18:25,103 INFO L448 ceAbstractionStarter]: For program point mainFINAL(lines 7 20) no Hoare annotation was computed. [2018-12-09 19:18:25,103 INFO L444 ceAbstractionStarter]: At program point L12-2(lines 12 16) the Hoare annotation is: (and (= main_~x1~0 (fp.div roundNearestTiesToEven main_~x~0 ((_ to_fp 8 24) roundNearestTiesToEven (/ 5.0 2.0)))) (exists ((v_main_~x~0_24 (_ FloatingPoint 8 24))) (let ((.cse0 (fp.div roundNearestTiesToEven v_main_~x~0_24 ((_ to_fp 8 24) roundNearestTiesToEven (/ 5.0 2.0))))) (and (not (fp.eq .cse0 v_main_~x~0_24)) (= .cse0 main_~x~0))))) [2018-12-09 19:18:25,104 INFO L444 ceAbstractionStarter]: At program point L12-3(lines 12 16) the Hoare annotation is: (let ((.cse3 ((_ to_fp 8 24) roundNearestTiesToEven (/ 5.0 2.0)))) (let ((.cse2 ((_ to_fp 8 24) roundNearestTiesToEven (_ bv0 32))) (.cse1 (fp.div roundNearestTiesToEven main_~x1~0 .cse3))) (or (and (exists ((v_main_~x~0_24 (_ FloatingPoint 8 24))) (let ((.cse0 (fp.div roundNearestTiesToEven v_main_~x~0_24 ((_ to_fp 8 24) roundNearestTiesToEven (/ 5.0 2.0))))) (and (not (fp.eq .cse0 v_main_~x~0_24)) (= .cse0 main_~x~0)))) (or (fp.eq main_~x1~0 main_~x~0) (not (fp.eq .cse1 main_~x1~0)) (fp.eq main_~x1~0 .cse2)) (fp.eq (fp.div roundNearestTiesToEven main_~x~0 .cse3) main_~x~0)) (and (fp.eq main_~x~0 .cse2) (or (fp.eq .cse1 .cse2) (not (fp.eq (fp.div roundNearestTiesToEven .cse1 .cse3) .cse1))))))) [2018-12-09 19:18:25,104 INFO L448 ceAbstractionStarter]: For program point L2-1(line 2) no Hoare annotation was computed. [2018-12-09 19:18:25,104 INFO L448 ceAbstractionStarter]: For program point L2-3(line 2) no Hoare annotation was computed. [2018-12-09 19:18:25,104 INFO L451 ceAbstractionStarter]: At program point __VERIFIER_assertENTRY(line 2) the Hoare annotation is: true [2018-12-09 19:18:25,104 INFO L448 ceAbstractionStarter]: For program point __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION(line 2) no Hoare annotation was computed. [2018-12-09 19:18:25,104 INFO L448 ceAbstractionStarter]: For program point __VERIFIER_assertEXIT(line 2) no Hoare annotation was computed. [2018-12-09 19:18:25,104 INFO L448 ceAbstractionStarter]: For program point L2(line 2) no Hoare annotation was computed. [2018-12-09 19:18:25,109 WARN L416 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2018-12-09 19:18:25,109 WARN L416 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2018-12-09 19:18:25,109 WARN L416 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2018-12-09 19:18:25,110 WARN L416 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~x~0_24,QUANTIFIED] [2018-12-09 19:18:25,110 WARN L416 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2018-12-09 19:18:25,110 WARN L416 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~x~0_24,QUANTIFIED] [2018-12-09 19:18:25,110 WARN L416 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2018-12-09 19:18:25,110 WARN L416 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~x~0_24,QUANTIFIED] [2018-12-09 19:18:25,110 WARN L416 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2018-12-09 19:18:25,112 WARN L416 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2018-12-09 19:18:25,113 WARN L416 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2018-12-09 19:18:25,113 WARN L416 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2018-12-09 19:18:25,113 WARN L416 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~x~0_24,QUANTIFIED] [2018-12-09 19:18:25,113 WARN L416 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2018-12-09 19:18:25,113 WARN L416 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~x~0_24,QUANTIFIED] [2018-12-09 19:18:25,113 WARN L416 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2018-12-09 19:18:25,113 WARN L416 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~x~0_24,QUANTIFIED] [2018-12-09 19:18:25,113 WARN L416 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2018-12-09 19:18:25,115 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 09.12 07:18:25 BoogieIcfgContainer [2018-12-09 19:18:25,115 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-12-09 19:18:25,115 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2018-12-09 19:18:25,115 INFO L271 PluginConnector]: Initializing Witness Printer... [2018-12-09 19:18:25,115 INFO L276 PluginConnector]: Witness Printer initialized [2018-12-09 19:18:25,116 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.12 07:12:58" (3/4) ... [2018-12-09 19:18:25,118 INFO L144 WitnessPrinter]: Generating witness for correct program [2018-12-09 19:18:25,122 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure ULTIMATE.init [2018-12-09 19:18:25,122 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure main [2018-12-09 19:18:25,122 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure __VERIFIER_assert [2018-12-09 19:18:25,124 INFO L905 BoogieBacktranslator]: Reduced CFG by removing 7 nodes and edges [2018-12-09 19:18:25,124 INFO L905 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2018-12-09 19:18:25,124 INFO L905 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2018-12-09 19:18:25,140 WARN L221 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: x1 == ~fp.div~FLOAT(~roundNearestTiesToEven, x, ~to_fp~LONGDOUBLE(~roundNearestTiesToEven, 5/2)) && (\exists v_main_~x~0_24 : C_FLOAT :: !~fp.eq~FLOAT(~fp.div~FLOAT(~roundNearestTiesToEven, v_main_~x~0_24, ~to_fp~LONGDOUBLE(~roundNearestTiesToEven, 5/2)), v_main_~x~0_24) && ~fp.div~FLOAT(~roundNearestTiesToEven, v_main_~x~0_24, ~to_fp~LONGDOUBLE(~roundNearestTiesToEven, 5/2)) == x) [2018-12-09 19:18:25,146 INFO L145 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/working_dir_3dc4d2f1-f13e-4816-bba3-d067174c13d6/bin-2019/utaipan/witness.graphml [2018-12-09 19:18:25,146 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2018-12-09 19:18:25,146 INFO L168 Benchmark]: Toolchain (without parser) took 327518.23 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 154.1 MB). Free memory was 944.7 MB in the beginning and 928.5 MB in the end (delta: 16.2 MB). Peak memory consumption was 170.4 MB. Max. memory is 11.5 GB. [2018-12-09 19:18:25,147 INFO L168 Benchmark]: CDTParser took 0.17 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. [2018-12-09 19:18:25,147 INFO L168 Benchmark]: CACSL2BoogieTranslator took 129.01 ms. Allocated memory is still 1.0 GB. Free memory was 944.7 MB in the beginning and 932.6 MB in the end (delta: 12.1 MB). Peak memory consumption was 12.1 MB. Max. memory is 11.5 GB. [2018-12-09 19:18:25,147 INFO L168 Benchmark]: Boogie Procedure Inliner took 12.82 ms. Allocated memory is still 1.0 GB. Free memory is still 932.6 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-12-09 19:18:25,147 INFO L168 Benchmark]: Boogie Preprocessor took 14.76 ms. Allocated memory is still 1.0 GB. Free memory was 932.6 MB in the beginning and 927.3 MB in the end (delta: 5.4 MB). Peak memory consumption was 5.4 MB. Max. memory is 11.5 GB. [2018-12-09 19:18:25,148 INFO L168 Benchmark]: RCFGBuilder took 499.63 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 154.1 MB). Free memory was 927.3 MB in the beginning and 1.1 GB in the end (delta: -197.0 MB). Peak memory consumption was 13.5 MB. Max. memory is 11.5 GB. [2018-12-09 19:18:25,148 INFO L168 Benchmark]: TraceAbstraction took 326828.44 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 935.3 MB in the end (delta: 189.0 MB). Peak memory consumption was 189.0 MB. Max. memory is 11.5 GB. [2018-12-09 19:18:25,148 INFO L168 Benchmark]: Witness Printer took 30.83 ms. Allocated memory is still 1.2 GB. Free memory was 935.3 MB in the beginning and 928.5 MB in the end (delta: 6.8 MB). Peak memory consumption was 6.8 MB. Max. memory is 11.5 GB. [2018-12-09 19:18:25,150 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.17 ms. Allocated memory is still 1.0 GB. Free memory is still 972.9 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 129.01 ms. Allocated memory is still 1.0 GB. Free memory was 944.7 MB in the beginning and 932.6 MB in the end (delta: 12.1 MB). Peak memory consumption was 12.1 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 12.82 ms. Allocated memory is still 1.0 GB. Free memory is still 932.6 MB. There was no memory consumed. Max. memory is 11.5 GB. * Boogie Preprocessor took 14.76 ms. Allocated memory is still 1.0 GB. Free memory was 932.6 MB in the beginning and 927.3 MB in the end (delta: 5.4 MB). Peak memory consumption was 5.4 MB. Max. memory is 11.5 GB. * RCFGBuilder took 499.63 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 154.1 MB). Free memory was 927.3 MB in the beginning and 1.1 GB in the end (delta: -197.0 MB). Peak memory consumption was 13.5 MB. Max. memory is 11.5 GB. * TraceAbstraction took 326828.44 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 935.3 MB in the end (delta: 189.0 MB). Peak memory consumption was 189.0 MB. Max. memory is 11.5 GB. * Witness Printer took 30.83 ms. Allocated memory is still 1.2 GB. Free memory was 935.3 MB in the beginning and 928.5 MB in the end (delta: 6.8 MB). Peak memory consumption was 6.8 MB. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.boogie.preprocessor: - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~x~0_24,QUANTIFIED] - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~x~0_24,QUANTIFIED] - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~x~0_24,QUANTIFIED] - 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 Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~x~0_24,QUANTIFIED] - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~x~0_24,QUANTIFIED] - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~x~0_24,QUANTIFIED] - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 2]: 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: 12]: Loop Invariant [2018-12-09 19:18:25,153 WARN L416 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2018-12-09 19:18:25,153 WARN L416 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2018-12-09 19:18:25,153 WARN L416 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2018-12-09 19:18:25,153 WARN L416 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~x~0_24,QUANTIFIED] [2018-12-09 19:18:25,153 WARN L416 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2018-12-09 19:18:25,153 WARN L416 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~x~0_24,QUANTIFIED] [2018-12-09 19:18:25,153 WARN L416 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2018-12-09 19:18:25,153 WARN L416 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~x~0_24,QUANTIFIED] [2018-12-09 19:18:25,153 WARN L416 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2018-12-09 19:18:25,154 WARN L416 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2018-12-09 19:18:25,154 WARN L416 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2018-12-09 19:18:25,154 WARN L416 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2018-12-09 19:18:25,154 WARN L416 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~x~0_24,QUANTIFIED] [2018-12-09 19:18:25,154 WARN L416 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2018-12-09 19:18:25,154 WARN L416 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~x~0_24,QUANTIFIED] [2018-12-09 19:18:25,154 WARN L416 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2018-12-09 19:18:25,154 WARN L416 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~x~0_24,QUANTIFIED] [2018-12-09 19:18:25,154 WARN L416 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven Derived loop invariant: x1 == ~fp.div~FLOAT(~roundNearestTiesToEven, x, ~to_fp~LONGDOUBLE(~roundNearestTiesToEven, 5/2)) && (\exists v_main_~x~0_24 : C_FLOAT :: !~fp.eq~FLOAT(~fp.div~FLOAT(~roundNearestTiesToEven, v_main_~x~0_24, ~to_fp~LONGDOUBLE(~roundNearestTiesToEven, 5/2)), v_main_~x~0_24) && ~fp.div~FLOAT(~roundNearestTiesToEven, v_main_~x~0_24, ~to_fp~LONGDOUBLE(~roundNearestTiesToEven, 5/2)) == x) - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 18 locations, 1 error locations. SAFE Result, 326.7s OverallTime, 4 OverallIterations, 7 TraceHistogramMax, 122.7s AutomataDifference, 0.0s DeadEndRemovalTime, 54.8s HoareAnnotationTime, HoareTripleCheckerStatistics: 40 SDtfs, 4 SDslu, 148 SDs, 0 SdLazy, 83 SolverSat, 11 SolverUnsat, 10 SolverUnknown, 0 SolverNotchecked, 33.4s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 130 GetRequests, 75 SyntacticMatches, 11 SemanticMatches, 44 ConstructedPredicates, 9 IntricatePredicates, 0 DeprecatedPredicates, 64 ImplicationChecksByTransitivity, 220.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=18occurred 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, 4 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 7 LocationsWithAnnotation, 11 PreInvPairs, 20 NumberOfFragments, 116 HoareAnnotationTreeSize, 11 FomulaSimplifications, 641 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 7 FomulaSimplificationsInter, 100 FormulaSimplificationTreeSizeReductionInter, 54.7s HoareSimplificationTimeInter, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 2.4s SatisfiabilityAnalysisTime, 146.5s InterpolantComputationTime, 77 NumberOfCodeBlocks, 74 NumberOfCodeBlocksAsserted, 10 NumberOfCheckSat, 117 ConstructedInterpolants, 5 QuantifiedInterpolants, 13959 SizeOfPredicates, 17 NumberOfNonLiveVariables, 156 ConjunctsInSsa, 55 ConjunctsInUnsatCore, 10 InterpolantComputations, 2 PerfectInterpolantSequences, 28/72 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...