./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_2b3e5a01-7f4c-4d0e-9b0e-8b718c502818/bin-2019/utaipan/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/working_dir_2b3e5a01-7f4c-4d0e-9b0e-8b718c502818/bin-2019/utaipan/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/working_dir_2b3e5a01-7f4c-4d0e-9b0e-8b718c502818/bin-2019/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/working_dir_2b3e5a01-7f4c-4d0e-9b0e-8b718c502818/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_2b3e5a01-7f4c-4d0e-9b0e-8b718c502818/bin-2019/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/working_dir_2b3e5a01-7f4c-4d0e-9b0e-8b718c502818/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_2b3e5a01-7f4c-4d0e-9b0e-8b718c502818/bin-2019/utaipan/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/working_dir_2b3e5a01-7f4c-4d0e-9b0e-8b718c502818/bin-2019/utaipan/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/working_dir_2b3e5a01-7f4c-4d0e-9b0e-8b718c502818/bin-2019/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/working_dir_2b3e5a01-7f4c-4d0e-9b0e-8b718c502818/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_2b3e5a01-7f4c-4d0e-9b0e-8b718c502818/bin-2019/utaipan/config/svcomp-Reach-32bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/working_dir_2b3e5a01-7f4c-4d0e-9b0e-8b718c502818/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 [2018-12-03 05:31:14,485 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-12-03 05:31:14,486 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-12-03 05:31:14,492 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-12-03 05:31:14,492 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-12-03 05:31:14,493 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-12-03 05:31:14,493 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-12-03 05:31:14,494 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-12-03 05:31:14,495 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-12-03 05:31:14,495 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-12-03 05:31:14,496 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-12-03 05:31:14,496 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-12-03 05:31:14,496 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-12-03 05:31:14,497 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-12-03 05:31:14,497 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-12-03 05:31:14,498 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-12-03 05:31:14,498 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-12-03 05:31:14,499 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-12-03 05:31:14,500 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-12-03 05:31:14,501 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-12-03 05:31:14,501 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-12-03 05:31:14,502 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-12-03 05:31:14,503 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-12-03 05:31:14,503 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-12-03 05:31:14,503 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-12-03 05:31:14,504 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-12-03 05:31:14,504 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-12-03 05:31:14,505 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-12-03 05:31:14,505 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-12-03 05:31:14,506 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-12-03 05:31:14,506 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-12-03 05:31:14,506 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-12-03 05:31:14,506 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-12-03 05:31:14,506 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-12-03 05:31:14,507 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-12-03 05:31:14,507 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-12-03 05:31:14,507 INFO L98 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/working_dir_2b3e5a01-7f4c-4d0e-9b0e-8b718c502818/bin-2019/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf [2018-12-03 05:31:14,514 INFO L110 SettingsManager]: Loading preferences was successful [2018-12-03 05:31:14,515 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-12-03 05:31:14,515 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-12-03 05:31:14,515 INFO L133 SettingsManager]: * ... calls to implemented procedures=ONLY_FOR_CONCURRENT_PROGRAMS [2018-12-03 05:31:14,515 INFO L133 SettingsManager]: * User list type=DISABLED [2018-12-03 05:31:14,515 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-12-03 05:31:14,516 INFO L133 SettingsManager]: * Explicit value domain=true [2018-12-03 05:31:14,516 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-12-03 05:31:14,516 INFO L133 SettingsManager]: * Octagon Domain=false [2018-12-03 05:31:14,516 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-12-03 05:31:14,516 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-12-03 05:31:14,516 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-12-03 05:31:14,516 INFO L133 SettingsManager]: * Interval Domain=false [2018-12-03 05:31:14,517 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-12-03 05:31:14,517 INFO L133 SettingsManager]: * sizeof long=4 [2018-12-03 05:31:14,517 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-12-03 05:31:14,517 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-12-03 05:31:14,517 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-12-03 05:31:14,517 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-12-03 05:31:14,517 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-12-03 05:31:14,518 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-12-03 05:31:14,518 INFO L133 SettingsManager]: * sizeof long double=12 [2018-12-03 05:31:14,518 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-12-03 05:31:14,518 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-12-03 05:31:14,518 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-12-03 05:31:14,518 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-12-03 05:31:14,518 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-12-03 05:31:14,519 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-12-03 05:31:14,519 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-12-03 05:31:14,519 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-12-03 05:31:14,519 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-12-03 05:31:14,519 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-12-03 05:31:14,519 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-12-03 05:31:14,519 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-12-03 05:31:14,519 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-12-03 05:31:14,519 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-12-03 05:31:14,520 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_2b3e5a01-7f4c-4d0e-9b0e-8b718c502818/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 [2018-12-03 05:31:14,538 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-12-03 05:31:14,546 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-12-03 05:31:14,549 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-12-03 05:31:14,550 INFO L271 PluginConnector]: Initializing CDTParser... [2018-12-03 05:31:14,550 INFO L276 PluginConnector]: CDTParser initialized [2018-12-03 05:31:14,551 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/working_dir_2b3e5a01-7f4c-4d0e-9b0e-8b718c502818/bin-2019/utaipan/../../sv-benchmarks/c/floats-esbmc-regression/Float_div_true-unreach-call.i [2018-12-03 05:31:14,595 INFO L221 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_2b3e5a01-7f4c-4d0e-9b0e-8b718c502818/bin-2019/utaipan/data/00ba09821/a7fe3bbea4a04126b26aaafe435abbd2/FLAGfd2b53c32 [2018-12-03 05:31:14,995 INFO L307 CDTParser]: Found 1 translation units. [2018-12-03 05:31:14,995 INFO L161 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/working_dir_2b3e5a01-7f4c-4d0e-9b0e-8b718c502818/sv-benchmarks/c/floats-esbmc-regression/Float_div_true-unreach-call.i [2018-12-03 05:31:14,998 INFO L355 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_2b3e5a01-7f4c-4d0e-9b0e-8b718c502818/bin-2019/utaipan/data/00ba09821/a7fe3bbea4a04126b26aaafe435abbd2/FLAGfd2b53c32 [2018-12-03 05:31:15,006 INFO L363 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/working_dir_2b3e5a01-7f4c-4d0e-9b0e-8b718c502818/bin-2019/utaipan/data/00ba09821/a7fe3bbea4a04126b26aaafe435abbd2 [2018-12-03 05:31:15,008 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-12-03 05:31:15,009 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2018-12-03 05:31:15,009 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-12-03 05:31:15,009 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-12-03 05:31:15,011 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-12-03 05:31:15,012 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.12 05:31:15" (1/1) ... [2018-12-03 05:31:15,013 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5663953f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.12 05:31:15, skipping insertion in model container [2018-12-03 05:31:15,013 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.12 05:31:15" (1/1) ... [2018-12-03 05:31:15,017 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-12-03 05:31:15,026 INFO L176 MainTranslator]: Built tables and reachable declarations [2018-12-03 05:31:15,108 INFO L203 PostProcessor]: Analyzing one entry point: main [2018-12-03 05:31:15,111 INFO L191 MainTranslator]: Completed pre-run [2018-12-03 05:31:15,119 INFO L203 PostProcessor]: Analyzing one entry point: main [2018-12-03 05:31:15,126 INFO L195 MainTranslator]: Completed translation [2018-12-03 05:31:15,126 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.12 05:31:15 WrapperNode [2018-12-03 05:31:15,126 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-12-03 05:31:15,127 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-12-03 05:31:15,127 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-12-03 05:31:15,127 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-12-03 05:31:15,132 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.12 05:31:15" (1/1) ... [2018-12-03 05:31:15,135 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.12 05:31:15" (1/1) ... [2018-12-03 05:31:15,138 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-12-03 05:31:15,139 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-12-03 05:31:15,139 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-12-03 05:31:15,139 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-12-03 05:31:15,144 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.12 05:31:15" (1/1) ... [2018-12-03 05:31:15,144 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.12 05:31:15" (1/1) ... [2018-12-03 05:31:15,144 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.12 05:31:15" (1/1) ... [2018-12-03 05:31:15,144 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.12 05:31:15" (1/1) ... [2018-12-03 05:31:15,147 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.12 05:31:15" (1/1) ... [2018-12-03 05:31:15,177 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.12 05:31:15" (1/1) ... [2018-12-03 05:31:15,178 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.12 05:31:15" (1/1) ... [2018-12-03 05:31:15,179 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-12-03 05:31:15,179 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-12-03 05:31:15,179 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-12-03 05:31:15,179 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-12-03 05:31:15,180 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.12 05:31:15" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_2b3e5a01-7f4c-4d0e-9b0e-8b718c502818/bin-2019/utaipan/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-12-03 05:31:15,211 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-12-03 05:31:15,211 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-12-03 05:31:15,211 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-12-03 05:31:15,211 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-12-03 05:31:15,211 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-12-03 05:31:15,212 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-12-03 05:31:15,212 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2018-12-03 05:31:15,212 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2018-12-03 05:31:15,290 INFO L275 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-12-03 05:31:15,291 INFO L280 CfgBuilder]: Removed 1 assue(true) statements. [2018-12-03 05:31:15,291 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.12 05:31:15 BoogieIcfgContainer [2018-12-03 05:31:15,291 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-12-03 05:31:15,291 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-12-03 05:31:15,291 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-12-03 05:31:15,293 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-12-03 05:31:15,293 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 03.12 05:31:15" (1/3) ... [2018-12-03 05:31:15,294 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@47489a1d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.12 05:31:15, skipping insertion in model container [2018-12-03 05:31:15,294 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.12 05:31:15" (2/3) ... [2018-12-03 05:31:15,294 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@47489a1d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.12 05:31:15, skipping insertion in model container [2018-12-03 05:31:15,294 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.12 05:31:15" (3/3) ... [2018-12-03 05:31:15,295 INFO L112 eAbstractionObserver]: Analyzing ICFG Float_div_true-unreach-call.i [2018-12-03 05:31:15,301 INFO L156 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-12-03 05:31:15,305 INFO L168 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-12-03 05:31:15,315 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-12-03 05:31:15,333 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-12-03 05:31:15,333 INFO L383 AbstractCegarLoop]: Hoare is true [2018-12-03 05:31:15,333 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-12-03 05:31:15,333 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-12-03 05:31:15,333 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-12-03 05:31:15,333 INFO L387 AbstractCegarLoop]: Difference is false [2018-12-03 05:31:15,333 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-12-03 05:31:15,333 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-12-03 05:31:15,343 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states. [2018-12-03 05:31:15,347 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2018-12-03 05:31:15,347 INFO L394 BasicCegarLoop]: Found error trace [2018-12-03 05:31:15,347 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-03 05:31:15,348 INFO L423 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-03 05:31:15,351 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-03 05:31:15,352 INFO L82 PathProgramCache]: Analyzing trace with hash -14991171, now seen corresponding path program 1 times [2018-12-03 05:31:15,353 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-12-03 05:31:15,381 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-03 05:31:15,381 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-03 05:31:15,381 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-03 05:31:15,381 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-12-03 05:31:15,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-12-03 05:31:15,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-12-03 05:31:15,416 INFO L469 BasicCegarLoop]: Counterexample might be feasible [2018-12-03 05:31:15,429 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 03.12 05:31:15 BoogieIcfgContainer [2018-12-03 05:31:15,429 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-12-03 05:31:15,429 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2018-12-03 05:31:15,429 INFO L271 PluginConnector]: Initializing Witness Printer... [2018-12-03 05:31:15,430 INFO L276 PluginConnector]: Witness Printer initialized [2018-12-03 05:31:15,430 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.12 05:31:15" (3/4) ... [2018-12-03 05:31:15,432 INFO L147 WitnessPrinter]: No result that supports witness generation found [2018-12-03 05:31:15,432 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2018-12-03 05:31:15,433 INFO L168 Benchmark]: Toolchain (without parser) took 424.59 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 138.9 MB). Free memory was 952.4 MB in the beginning and 1.1 GB in the end (delta: -153.7 MB). There was no memory consumed. Max. memory is 11.5 GB. [2018-12-03 05:31:15,434 INFO L168 Benchmark]: CDTParser took 0.18 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. [2018-12-03 05:31:15,434 INFO L168 Benchmark]: CACSL2BoogieTranslator took 117.53 ms. Allocated memory is still 1.0 GB. Free memory was 952.4 MB in the beginning and 941.6 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. [2018-12-03 05:31:15,435 INFO L168 Benchmark]: Boogie Procedure Inliner took 11.61 ms. Allocated memory is still 1.0 GB. Free memory is still 941.6 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-12-03 05:31:15,435 INFO L168 Benchmark]: Boogie Preprocessor took 40.23 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 138.9 MB). Free memory was 941.6 MB in the beginning and 1.1 GB in the end (delta: -192.6 MB). Peak memory consumption was 12.8 MB. Max. memory is 11.5 GB. [2018-12-03 05:31:15,435 INFO L168 Benchmark]: RCFGBuilder took 111.89 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 14.6 MB). Peak memory consumption was 14.6 MB. Max. memory is 11.5 GB. [2018-12-03 05:31:15,436 INFO L168 Benchmark]: TraceAbstraction took 137.74 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 13.5 MB). Peak memory consumption was 13.5 MB. Max. memory is 11.5 GB. [2018-12-03 05:31:15,436 INFO L168 Benchmark]: Witness Printer took 2.99 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. [2018-12-03 05:31:15,438 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.18 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 117.53 ms. Allocated memory is still 1.0 GB. Free memory was 952.4 MB in the beginning and 941.6 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 11.61 ms. Allocated memory is still 1.0 GB. Free memory is still 941.6 MB. There was no memory consumed. Max. memory is 11.5 GB. * Boogie Preprocessor took 40.23 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 138.9 MB). Free memory was 941.6 MB in the beginning and 1.1 GB in the end (delta: -192.6 MB). Peak memory consumption was 12.8 MB. Max. memory is 11.5 GB. * RCFGBuilder took 111.89 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 14.6 MB). Peak memory consumption was 14.6 MB. Max. memory is 11.5 GB. * TraceAbstraction took 137.74 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 13.5 MB). Peak memory consumption was 13.5 MB. Max. memory is 11.5 GB. * Witness Printer took 2.99 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.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 [2018-12-03 05:31:16,780 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-12-03 05:31:16,781 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-12-03 05:31:16,790 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-12-03 05:31:16,790 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-12-03 05:31:16,791 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-12-03 05:31:16,792 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-12-03 05:31:16,793 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-12-03 05:31:16,794 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-12-03 05:31:16,795 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-12-03 05:31:16,795 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-12-03 05:31:16,796 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-12-03 05:31:16,796 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-12-03 05:31:16,797 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-12-03 05:31:16,798 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-12-03 05:31:16,798 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-12-03 05:31:16,799 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-12-03 05:31:16,800 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-12-03 05:31:16,801 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-12-03 05:31:16,803 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-12-03 05:31:16,803 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-12-03 05:31:16,804 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-12-03 05:31:16,806 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-12-03 05:31:16,806 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-12-03 05:31:16,806 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-12-03 05:31:16,807 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-12-03 05:31:16,807 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-12-03 05:31:16,808 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-12-03 05:31:16,809 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-12-03 05:31:16,809 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-12-03 05:31:16,809 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-12-03 05:31:16,810 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-12-03 05:31:16,810 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-12-03 05:31:16,810 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-12-03 05:31:16,811 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-12-03 05:31:16,811 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-12-03 05:31:16,812 INFO L98 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/working_dir_2b3e5a01-7f4c-4d0e-9b0e-8b718c502818/bin-2019/utaipan/config/svcomp-Reach-32bit-Taipan_Bitvector.epf [2018-12-03 05:31:16,822 INFO L110 SettingsManager]: Loading preferences was successful [2018-12-03 05:31:16,823 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-12-03 05:31:16,823 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-12-03 05:31:16,823 INFO L133 SettingsManager]: * ... calls to implemented procedures=ONLY_FOR_CONCURRENT_PROGRAMS [2018-12-03 05:31:16,824 INFO L133 SettingsManager]: * User list type=DISABLED [2018-12-03 05:31:16,824 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-12-03 05:31:16,824 INFO L133 SettingsManager]: * Explicit value domain=true [2018-12-03 05:31:16,824 INFO L133 SettingsManager]: * Octagon Domain=false [2018-12-03 05:31:16,824 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-12-03 05:31:16,824 INFO L133 SettingsManager]: * Interval Domain=false [2018-12-03 05:31:16,825 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-12-03 05:31:16,825 INFO L133 SettingsManager]: * sizeof long=4 [2018-12-03 05:31:16,825 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-12-03 05:31:16,825 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-12-03 05:31:16,825 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-12-03 05:31:16,826 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-12-03 05:31:16,826 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-12-03 05:31:16,826 INFO L133 SettingsManager]: * Use bitvectors instead of ints=true [2018-12-03 05:31:16,826 INFO L133 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2018-12-03 05:31:16,826 INFO L133 SettingsManager]: * sizeof long double=12 [2018-12-03 05:31:16,826 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-12-03 05:31:16,827 INFO L133 SettingsManager]: * Use constant arrays=true [2018-12-03 05:31:16,827 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-12-03 05:31:16,827 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-12-03 05:31:16,827 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-12-03 05:31:16,827 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-12-03 05:31:16,827 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-12-03 05:31:16,827 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-12-03 05:31:16,828 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-12-03 05:31:16,828 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-12-03 05:31:16,828 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-12-03 05:31:16,828 INFO L133 SettingsManager]: * Trace refinement strategy=WALRUS [2018-12-03 05:31:16,828 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-12-03 05:31:16,828 INFO L133 SettingsManager]: * Command for external solver=cvc4 --incremental --rewrite-divk --print-success --lang smt [2018-12-03 05:31:16,829 INFO L133 SettingsManager]: * Logic for external solver=AUFBV [2018-12-03 05:31:16,829 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_2b3e5a01-7f4c-4d0e-9b0e-8b718c502818/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 [2018-12-03 05:31:16,849 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-12-03 05:31:16,859 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-12-03 05:31:16,861 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-12-03 05:31:16,863 INFO L271 PluginConnector]: Initializing CDTParser... [2018-12-03 05:31:16,863 INFO L276 PluginConnector]: CDTParser initialized [2018-12-03 05:31:16,863 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/working_dir_2b3e5a01-7f4c-4d0e-9b0e-8b718c502818/bin-2019/utaipan/../../sv-benchmarks/c/floats-esbmc-regression/Float_div_true-unreach-call.i [2018-12-03 05:31:16,904 INFO L221 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_2b3e5a01-7f4c-4d0e-9b0e-8b718c502818/bin-2019/utaipan/data/650ea8e04/fe41ee6feeef4214b1ea9ea3d439cee3/FLAG1118fb252 [2018-12-03 05:31:17,285 INFO L307 CDTParser]: Found 1 translation units. [2018-12-03 05:31:17,286 INFO L161 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/working_dir_2b3e5a01-7f4c-4d0e-9b0e-8b718c502818/sv-benchmarks/c/floats-esbmc-regression/Float_div_true-unreach-call.i [2018-12-03 05:31:17,289 INFO L355 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_2b3e5a01-7f4c-4d0e-9b0e-8b718c502818/bin-2019/utaipan/data/650ea8e04/fe41ee6feeef4214b1ea9ea3d439cee3/FLAG1118fb252 [2018-12-03 05:31:17,297 INFO L363 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/working_dir_2b3e5a01-7f4c-4d0e-9b0e-8b718c502818/bin-2019/utaipan/data/650ea8e04/fe41ee6feeef4214b1ea9ea3d439cee3 [2018-12-03 05:31:17,299 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-12-03 05:31:17,300 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2018-12-03 05:31:17,300 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-12-03 05:31:17,300 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-12-03 05:31:17,302 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-12-03 05:31:17,303 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.12 05:31:17" (1/1) ... [2018-12-03 05:31:17,305 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@8f4428e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.12 05:31:17, skipping insertion in model container [2018-12-03 05:31:17,305 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.12 05:31:17" (1/1) ... [2018-12-03 05:31:17,309 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-12-03 05:31:17,318 INFO L176 MainTranslator]: Built tables and reachable declarations [2018-12-03 05:31:17,402 INFO L203 PostProcessor]: Analyzing one entry point: main [2018-12-03 05:31:17,407 INFO L191 MainTranslator]: Completed pre-run [2018-12-03 05:31:17,415 INFO L203 PostProcessor]: Analyzing one entry point: main [2018-12-03 05:31:17,423 INFO L195 MainTranslator]: Completed translation [2018-12-03 05:31:17,424 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.12 05:31:17 WrapperNode [2018-12-03 05:31:17,424 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-12-03 05:31:17,424 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-12-03 05:31:17,424 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-12-03 05:31:17,424 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-12-03 05:31:17,429 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.12 05:31:17" (1/1) ... [2018-12-03 05:31:17,433 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.12 05:31:17" (1/1) ... [2018-12-03 05:31:17,437 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-12-03 05:31:17,437 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-12-03 05:31:17,437 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-12-03 05:31:17,437 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-12-03 05:31:17,443 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.12 05:31:17" (1/1) ... [2018-12-03 05:31:17,443 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.12 05:31:17" (1/1) ... [2018-12-03 05:31:17,444 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.12 05:31:17" (1/1) ... [2018-12-03 05:31:17,444 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.12 05:31:17" (1/1) ... [2018-12-03 05:31:17,448 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.12 05:31:17" (1/1) ... [2018-12-03 05:31:17,450 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.12 05:31:17" (1/1) ... [2018-12-03 05:31:17,451 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.12 05:31:17" (1/1) ... [2018-12-03 05:31:17,452 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-12-03 05:31:17,453 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-12-03 05:31:17,453 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-12-03 05:31:17,453 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-12-03 05:31:17,453 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.12 05:31:17" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_2b3e5a01-7f4c-4d0e-9b0e-8b718c502818/bin-2019/utaipan/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-12-03 05:31:17,514 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-12-03 05:31:17,514 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-12-03 05:31:17,514 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-12-03 05:31:17,514 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-12-03 05:31:17,515 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-12-03 05:31:17,515 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-12-03 05:31:17,515 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2018-12-03 05:31:17,515 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2018-12-03 05:31:17,948 INFO L275 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-12-03 05:31:17,948 INFO L280 CfgBuilder]: Removed 1 assue(true) statements. [2018-12-03 05:31:17,948 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.12 05:31:17 BoogieIcfgContainer [2018-12-03 05:31:17,949 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-12-03 05:31:17,949 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-12-03 05:31:17,949 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-12-03 05:31:17,951 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-12-03 05:31:17,951 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 03.12 05:31:17" (1/3) ... [2018-12-03 05:31:17,951 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7a238ee6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.12 05:31:17, skipping insertion in model container [2018-12-03 05:31:17,951 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.12 05:31:17" (2/3) ... [2018-12-03 05:31:17,952 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7a238ee6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.12 05:31:17, skipping insertion in model container [2018-12-03 05:31:17,952 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.12 05:31:17" (3/3) ... [2018-12-03 05:31:17,953 INFO L112 eAbstractionObserver]: Analyzing ICFG Float_div_true-unreach-call.i [2018-12-03 05:31:17,960 INFO L156 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-12-03 05:31:17,964 INFO L168 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-12-03 05:31:17,973 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-12-03 05:31:17,990 INFO L133 ementStrategyFactory]: Using default assertion order modulation [2018-12-03 05:31:17,991 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-12-03 05:31:17,991 INFO L383 AbstractCegarLoop]: Hoare is true [2018-12-03 05:31:17,991 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-12-03 05:31:17,991 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-12-03 05:31:17,991 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-12-03 05:31:17,991 INFO L387 AbstractCegarLoop]: Difference is false [2018-12-03 05:31:17,991 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-12-03 05:31:17,991 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-12-03 05:31:18,001 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states. [2018-12-03 05:31:18,003 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2018-12-03 05:31:18,004 INFO L394 BasicCegarLoop]: Found error trace [2018-12-03 05:31:18,004 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-03 05:31:18,005 INFO L423 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-03 05:31:18,008 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-03 05:31:18,008 INFO L82 PathProgramCache]: Analyzing trace with hash -14991171, now seen corresponding path program 1 times [2018-12-03 05:31:18,011 INFO L223 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-12-03 05:31:18,011 INFO L69 tionRefinementEngine]: Using refinement strategy WalrusRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_2b3e5a01-7f4c-4d0e-9b0e-8b718c502818/bin-2019/utaipan/mathsat Starting monitored process 2 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with mathsat -unsat_core_generation=3 [2018-12-03 05:31:18,015 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-03 05:31:18,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-03 05:31:18,081 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-03 05:31:18,667 WARN L180 SmtUtils]: Spent 396.00 ms on a formula simplification that was a NOOP. DAG size: 11 [2018-12-03 05:31:18,674 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-03 05:31:18,674 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-12-03 05:31:18,686 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-12-03 05:31:18,686 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-12-03 05:31:18,689 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-12-03 05:31:18,696 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-12-03 05:31:18,696 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-12-03 05:31:18,698 INFO L87 Difference]: Start difference. First operand 18 states. Second operand 3 states. [2018-12-03 05:31:18,861 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-03 05:31:18,861 INFO L93 Difference]: Finished difference Result 31 states and 36 transitions. [2018-12-03 05:31:18,862 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-12-03 05:31:18,863 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 10 [2018-12-03 05:31:18,863 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-03 05:31:18,867 INFO L225 Difference]: With dead ends: 31 [2018-12-03 05:31:18,867 INFO L226 Difference]: Without dead ends: 12 [2018-12-03 05:31:18,869 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 [2018-12-03 05:31:18,879 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12 states. [2018-12-03 05:31:18,887 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12 to 12. [2018-12-03 05:31:18,888 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2018-12-03 05:31:18,888 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 12 transitions. [2018-12-03 05:31:18,889 INFO L78 Accepts]: Start accepts. Automaton has 12 states and 12 transitions. Word has length 10 [2018-12-03 05:31:18,889 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-03 05:31:18,890 INFO L480 AbstractCegarLoop]: Abstraction has 12 states and 12 transitions. [2018-12-03 05:31:18,890 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-12-03 05:31:18,890 INFO L276 IsEmpty]: Start isEmpty. Operand 12 states and 12 transitions. [2018-12-03 05:31:18,890 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2018-12-03 05:31:18,890 INFO L394 BasicCegarLoop]: Found error trace [2018-12-03 05:31:18,890 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-03 05:31:18,890 INFO L423 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-03 05:31:18,890 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-03 05:31:18,891 INFO L82 PathProgramCache]: Analyzing trace with hash -429188558, now seen corresponding path program 1 times [2018-12-03 05:31:18,891 INFO L223 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-12-03 05:31:18,891 INFO L69 tionRefinementEngine]: Using refinement strategy WalrusRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_2b3e5a01-7f4c-4d0e-9b0e-8b718c502818/bin-2019/utaipan/mathsat Starting monitored process 3 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with mathsat -unsat_core_generation=3 [2018-12-03 05:31:18,894 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-03 05:31:18,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-03 05:31:18,978 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-03 05:31:19,607 WARN L180 SmtUtils]: Spent 405.00 ms on a formula simplification that was a NOOP. DAG size: 12 [2018-12-03 05:31:19,610 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-03 05:31:19,610 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-12-03 05:31:22,036 WARN L180 SmtUtils]: Spent 262.00 ms on a formula simplification that was a NOOP. DAG size: 7 [2018-12-03 05:31:22,044 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-03 05:31:22,051 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-12-03 05:31:22,051 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FPBP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_2b3e5a01-7f4c-4d0e-9b0e-8b718c502818/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 [2018-12-03 05:31:22,057 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-03 05:31:22,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-03 05:31:22,502 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-03 05:31:22,507 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-03 05:31:22,507 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-12-03 05:31:32,220 WARN L180 SmtUtils]: Spent 1.64 s on a formula simplification that was a NOOP. DAG size: 11 [2018-12-03 05:31:32,226 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-03 05:31:32,250 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 4 imperfect interpolant sequences. [2018-12-03 05:31:32,250 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4, 7] total 11 [2018-12-03 05:31:32,250 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2018-12-03 05:31:32,251 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2018-12-03 05:31:32,251 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=81, Unknown=1, NotChecked=0, Total=110 [2018-12-03 05:31:32,251 INFO L87 Difference]: Start difference. First operand 12 states and 12 transitions. Second operand 11 states. [2018-12-03 05:31:37,501 WARN L180 SmtUtils]: Spent 1.46 s on a formula simplification that was a NOOP. DAG size: 11 [2018-12-03 05:31:42,576 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-03 05:31:42,576 INFO L93 Difference]: Finished difference Result 20 states and 22 transitions. [2018-12-03 05:31:42,577 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-12-03 05:31:42,577 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 11 [2018-12-03 05:31:42,577 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-03 05:31:42,577 INFO L225 Difference]: With dead ends: 20 [2018-12-03 05:31:42,577 INFO L226 Difference]: Without dead ends: 15 [2018-12-03 05:31:42,578 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 29 SyntacticMatches, 4 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 16.3s TimeCoverageRelationStatistics Valid=43, Invalid=112, Unknown=1, NotChecked=0, Total=156 [2018-12-03 05:31:42,578 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15 states. [2018-12-03 05:31:42,580 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15 to 15. [2018-12-03 05:31:42,580 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2018-12-03 05:31:42,580 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 15 transitions. [2018-12-03 05:31:42,580 INFO L78 Accepts]: Start accepts. Automaton has 15 states and 15 transitions. Word has length 11 [2018-12-03 05:31:42,581 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-03 05:31:42,581 INFO L480 AbstractCegarLoop]: Abstraction has 15 states and 15 transitions. [2018-12-03 05:31:42,581 INFO L481 AbstractCegarLoop]: Interpolant automaton has 11 states. [2018-12-03 05:31:42,581 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states and 15 transitions. [2018-12-03 05:31:42,581 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2018-12-03 05:31:42,581 INFO L394 BasicCegarLoop]: Found error trace [2018-12-03 05:31:42,581 INFO L402 BasicCegarLoop]: trace histogram [4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-03 05:31:42,582 INFO L423 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-03 05:31:42,582 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-03 05:31:42,582 INFO L82 PathProgramCache]: Analyzing trace with hash 1090549245, now seen corresponding path program 2 times [2018-12-03 05:31:42,582 INFO L223 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-12-03 05:31:42,582 INFO L69 tionRefinementEngine]: Using refinement strategy WalrusRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_2b3e5a01-7f4c-4d0e-9b0e-8b718c502818/bin-2019/utaipan/mathsat Starting monitored process 5 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with mathsat -unsat_core_generation=3 [2018-12-03 05:31:42,591 INFO L101 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2018-12-03 05:31:42,773 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-12-03 05:31:42,773 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-12-03 05:31:42,785 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-03 05:31:43,565 WARN L180 SmtUtils]: Spent 390.00 ms on a formula simplification that was a NOOP. DAG size: 15 [2018-12-03 05:31:43,568 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-03 05:31:43,568 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-12-03 05:31:52,290 WARN L180 SmtUtils]: Spent 3.12 s on a formula simplification that was a NOOP. DAG size: 11 [2018-12-03 05:32:25,452 WARN L180 SmtUtils]: Spent 8.67 s on a formula simplification that was a NOOP. DAG size: 12 [2018-12-03 05:33:06,588 WARN L180 SmtUtils]: Spent 8.53 s on a formula simplification that was a NOOP. DAG size: 13 [2018-12-03 05:33:08,684 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 (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 false [2018-12-03 05:33:10,778 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 [2018-12-03 05:33:10,786 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 1 refuted. 5 times theorem prover too weak. 0 trivial. 4 not checked. [2018-12-03 05:33:10,796 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-12-03 05:33:10,796 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FPBP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_2b3e5a01-7f4c-4d0e-9b0e-8b718c502818/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 [2018-12-03 05:33:10,803 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-12-03 05:33:12,438 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-12-03 05:33:12,438 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-12-03 05:33:12,520 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-03 05:33:13,281 WARN L180 SmtUtils]: Spent 469.00 ms on a formula simplification that was a NOOP. DAG size: 12 [2018-12-03 05:33:14,584 WARN L180 SmtUtils]: Spent 1.10 s on a formula simplification. DAG size of input: 15 DAG size of output: 13 [2018-12-03 05:33:15,890 WARN L180 SmtUtils]: Spent 980.00 ms on a formula simplification. DAG size of input: 16 DAG size of output: 14 [2018-12-03 05:33:16,156 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-03 05:33:16,156 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-12-03 05:33:18,409 WARN L854 $PredicateComparison]: unable to prove that (or (fp.eq c_main_~x1~0 c_main_~x~0) (not (fp.eq (fp.div roundNearestTiesToEven c_main_~x1~0 ((_ to_fp 8 24) roundNearestTiesToEven (/ 5.0 2.0))) c_main_~x1~0)) (fp.eq c_main_~x1~0 ((_ to_fp 8 24) roundNearestTiesToEven (_ bv0 32)))) is different from true [2018-12-03 05:33:22,220 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 [2018-12-03 05:33:24,844 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 [2018-12-03 05:33:26,938 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 [2018-12-03 05:33:29,033 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 [2018-12-03 05:33:29,041 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 10 not checked. [2018-12-03 05:33:29,080 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 4 imperfect interpolant sequences. [2018-12-03 05:33:29,080 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 10, 7, 10] total 22 [2018-12-03 05:33:29,081 INFO L459 AbstractCegarLoop]: Interpolant automaton has 22 states [2018-12-03 05:33:29,081 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2018-12-03 05:33:29,081 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=75, Invalid=191, Unknown=26, NotChecked=170, Total=462 [2018-12-03 05:33:29,082 INFO L87 Difference]: Start difference. First operand 15 states and 15 transitions. Second operand 22 states. [2018-12-03 05:33:31,171 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 [2018-12-03 05:33:33,268 WARN L854 $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 true [2018-12-03 05:34:00,065 WARN L180 SmtUtils]: Spent 7.18 s on a formula simplification. DAG size of input: 24 DAG size of output: 12 [2018-12-03 05:34:19,887 WARN L180 SmtUtils]: Spent 7.27 s on a formula simplification. DAG size of input: 23 DAG size of output: 13 [2018-12-03 05:34:28,278 WARN L832 $PredicateComparison]: unable to prove that (let ((.cse0 ((_ to_fp 8 24) roundNearestTiesToEven (/ 5.0 2.0)))) (and (= c_main_~x1~0 (fp.div roundNearestTiesToEven c_main_~x~0 .cse0)) (let ((.cse1 (fp.div roundNearestTiesToEven (fp.div roundNearestTiesToEven c_main_~x1~0 .cse0) .cse0))) (or (fp.eq .cse1 ((_ to_fp 8 24) roundNearestTiesToEven (_ bv0 32))) (not (fp.eq (fp.div roundNearestTiesToEven .cse1 .cse0) .cse1)))) (= (fp.div roundNearestTiesToEven (fp.div roundNearestTiesToEven (fp.div roundNearestTiesToEven (fp.div roundNearestTiesToEven ((_ to_fp 8 24) roundNearestTiesToEven 1.0) .cse0) .cse0) .cse0) .cse0) c_main_~x~0))) is different from false [2018-12-03 05:34:30,353 WARN L854 $PredicateComparison]: unable to prove that (let ((.cse0 ((_ to_fp 8 24) roundNearestTiesToEven (/ 5.0 2.0)))) (and (= c_main_~x1~0 (fp.div roundNearestTiesToEven c_main_~x~0 .cse0)) (let ((.cse1 (fp.div roundNearestTiesToEven (fp.div roundNearestTiesToEven c_main_~x1~0 .cse0) .cse0))) (or (fp.eq .cse1 ((_ to_fp 8 24) roundNearestTiesToEven (_ bv0 32))) (not (fp.eq (fp.div roundNearestTiesToEven .cse1 .cse0) .cse1)))) (= (fp.div roundNearestTiesToEven (fp.div roundNearestTiesToEven (fp.div roundNearestTiesToEven (fp.div roundNearestTiesToEven ((_ to_fp 8 24) roundNearestTiesToEven 1.0) .cse0) .cse0) .cse0) .cse0) c_main_~x~0))) is different from true [2018-12-03 05:35:10,873 WARN L180 SmtUtils]: Spent 14.33 s on a formula simplification that was a NOOP. DAG size: 18 [2018-12-03 05:35:50,747 WARN L180 SmtUtils]: Spent 19.93 s on a formula simplification that was a NOOP. DAG size: 16 [2018-12-03 05:36:09,909 WARN L180 SmtUtils]: Spent 2.87 s on a formula simplification that was a NOOP. DAG size: 17 [2018-12-03 05:36:24,131 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-03 05:36:24,131 INFO L93 Difference]: Finished difference Result 27 states and 30 transitions. [2018-12-03 05:36:24,132 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2018-12-03 05:36:24,132 INFO L78 Accepts]: Start accepts. Automaton has 22 states. Word has length 14 [2018-12-03 05:36:24,132 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-03 05:36:24,132 INFO L225 Difference]: With dead ends: 27 [2018-12-03 05:36:24,132 INFO L226 Difference]: Without dead ends: 19 [2018-12-03 05:36:24,133 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 29 SyntacticMatches, 6 SemanticMatches, 28 ConstructedPredicates, 7 IntricatePredicates, 0 DeprecatedPredicates, 82 ImplicationChecksByTransitivity, 259.3s TimeCoverageRelationStatistics Valid=128, Invalid=354, Unknown=52, NotChecked=336, Total=870 [2018-12-03 05:36:24,133 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19 states. [2018-12-03 05:36:24,135 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19 to 19. [2018-12-03 05:36:24,135 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2018-12-03 05:36:24,136 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 19 transitions. [2018-12-03 05:36:24,136 INFO L78 Accepts]: Start accepts. Automaton has 19 states and 19 transitions. Word has length 14 [2018-12-03 05:36:24,136 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-03 05:36:24,136 INFO L480 AbstractCegarLoop]: Abstraction has 19 states and 19 transitions. [2018-12-03 05:36:24,136 INFO L481 AbstractCegarLoop]: Interpolant automaton has 22 states. [2018-12-03 05:36:24,136 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 19 transitions. [2018-12-03 05:36:24,137 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2018-12-03 05:36:24,137 INFO L394 BasicCegarLoop]: Found error trace [2018-12-03 05:36:24,137 INFO L402 BasicCegarLoop]: trace histogram [8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-03 05:36:24,137 INFO L423 AbstractCegarLoop]: === Iteration 4 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-03 05:36:24,137 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-03 05:36:24,137 INFO L82 PathProgramCache]: Analyzing trace with hash -154596547, now seen corresponding path program 3 times [2018-12-03 05:36:24,137 INFO L223 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-12-03 05:36:24,137 INFO L69 tionRefinementEngine]: Using refinement strategy WalrusRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_2b3e5a01-7f4c-4d0e-9b0e-8b718c502818/bin-2019/utaipan/mathsat Starting monitored process 7 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with mathsat -unsat_core_generation=3 [2018-12-03 05:36:24,140 INFO L101 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2018-12-03 05:36:24,340 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2018-12-03 05:36:24,340 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-12-03 05:36:24,353 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-03 05:36:25,271 WARN L180 SmtUtils]: Spent 323.00 ms on a formula simplification that was a NOOP. DAG size: 7 [2018-12-03 05:36:36,258 WARN L180 SmtUtils]: Spent 7.57 s on a formula simplification that was a NOOP. DAG size: 15 [2018-12-03 05:36:38,306 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 [2018-12-03 05:36:40,340 WARN L854 $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 true [2018-12-03 05:37:01,422 WARN L180 SmtUtils]: Spent 11.89 s on a formula simplification that was a NOOP. DAG size: 22 [2018-12-03 05:37:25,425 WARN L180 SmtUtils]: Spent 10.68 s on a formula simplification that was a NOOP. DAG size: 22 [2018-12-03 05:37:31,577 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 [2018-12-03 05:37:33,621 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 [2018-12-03 05:37:33,623 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2018-12-03 05:37:33,623 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-12-03 05:37:33,638 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-12-03 05:37:33,638 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2018-12-03 05:37:33,638 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2018-12-03 05:37:33,638 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2018-12-03 05:37:33,638 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=17, Unknown=7, NotChecked=18, Total=56 [2018-12-03 05:37:33,639 INFO L87 Difference]: Start difference. First operand 19 states and 19 transitions. Second operand 8 states. [2018-12-03 05:37:42,447 WARN L832 $PredicateComparison]: unable to prove that (let ((.cse0 (exists ((v_main_~x~0_24 (_ FloatingPoint 8 24))) (let ((.cse2 ((_ to_fp 8 24) roundNearestTiesToEven (/ 5.0 2.0)))) (let ((.cse1 (fp.div roundNearestTiesToEven v_main_~x~0_24 .cse2))) (and (not (fp.eq .cse1 ((_ to_fp 8 24) roundNearestTiesToEven (_ bv0 32)))) (not (fp.eq .cse1 v_main_~x~0_24)) (fp.eq (fp.div roundNearestTiesToEven .cse1 .cse2) .cse1))))))) (and (or (and (= (_ bv0 32) c___VERIFIER_assert_~cond) .cse0) (= (bvadd c___VERIFIER_assert_~cond (_ bv4294967295 32)) (_ bv0 32))) (or (= (bvadd |c___VERIFIER_assert_#in~cond| (_ bv4294967295 32)) (_ bv0 32)) (and (= |c___VERIFIER_assert_#in~cond| (_ bv0 32)) .cse0)))) is different from false [2018-12-03 05:37:42,450 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-03 05:37:42,450 INFO L93 Difference]: Finished difference Result 19 states and 19 transitions. [2018-12-03 05:37:42,450 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-12-03 05:37:42,450 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 18 [2018-12-03 05:37:42,451 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-03 05:37:42,451 INFO L225 Difference]: With dead ends: 19 [2018-12-03 05:37:42,451 INFO L226 Difference]: Without dead ends: 0 [2018-12-03 05:37:42,451 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 3 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 57.2s TimeCoverageRelationStatistics Valid=16, Invalid=18, Unknown=8, NotChecked=30, Total=72 [2018-12-03 05:37:42,451 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2018-12-03 05:37:42,451 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2018-12-03 05:37:42,452 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2018-12-03 05:37:42,452 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2018-12-03 05:37:42,452 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 18 [2018-12-03 05:37:42,452 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-03 05:37:42,452 INFO L480 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2018-12-03 05:37:42,452 INFO L481 AbstractCegarLoop]: Interpolant automaton has 8 states. [2018-12-03 05:37:42,452 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2018-12-03 05:37:42,452 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2018-12-03 05:37:42,455 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2018-12-03 05:37:42,628 WARN L180 SmtUtils]: Spent 125.00 ms on a formula simplification. DAG size of input: 29 DAG size of output: 1 [2018-12-03 05:38:20,356 WARN L180 SmtUtils]: Spent 37.73 s on a formula simplification that was a NOOP. DAG size: 27 [2018-12-03 05:38:24,549 WARN L180 SmtUtils]: Spent 4.19 s on a formula simplification that was a NOOP. DAG size: 15 [2018-12-03 05:38:24,551 INFO L451 ceAbstractionStarter]: At program point ULTIMATE.initFINAL(line -1) the Hoare annotation is: true [2018-12-03 05:38:24,551 INFO L448 ceAbstractionStarter]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2018-12-03 05:38:24,551 INFO L448 ceAbstractionStarter]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2018-12-03 05:38:24,551 INFO L451 ceAbstractionStarter]: At program point L-1(line -1) the Hoare annotation is: true [2018-12-03 05:38:24,551 INFO L451 ceAbstractionStarter]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2018-12-03 05:38:24,551 INFO L448 ceAbstractionStarter]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2018-12-03 05:38:24,551 INFO L451 ceAbstractionStarter]: At program point mainENTRY(lines 7 20) the Hoare annotation is: true [2018-12-03 05:38:24,551 INFO L448 ceAbstractionStarter]: For program point mainEXIT(lines 7 20) no Hoare annotation was computed. [2018-12-03 05:38:24,551 INFO L448 ceAbstractionStarter]: For program point L18(line 18) no Hoare annotation was computed. [2018-12-03 05:38:24,551 INFO L448 ceAbstractionStarter]: For program point mainFINAL(lines 7 20) no Hoare annotation was computed. [2018-12-03 05:38:24,551 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))))) [2018-12-03 05:38:24,552 INFO L444 ceAbstractionStarter]: At program point L12-3(lines 12 16) the Hoare annotation is: (let ((.cse1 ((_ to_fp 8 24) roundNearestTiesToEven (/ 5.0 2.0)))) (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)))) (fp.eq (fp.div roundNearestTiesToEven main_~x~0 .cse1) main_~x~0)) (let ((.cse2 ((_ to_fp 8 24) roundNearestTiesToEven (_ bv0 32)))) (and (fp.eq main_~x~0 .cse2) (let ((.cse3 (fp.div roundNearestTiesToEven (fp.div roundNearestTiesToEven main_~x1~0 .cse1) .cse1))) (or (fp.eq .cse3 .cse2) (not (fp.eq (fp.div roundNearestTiesToEven .cse3 .cse1) .cse3)))))))) [2018-12-03 05:38:24,552 INFO L448 ceAbstractionStarter]: For program point L2-1(line 2) no Hoare annotation was computed. [2018-12-03 05:38:24,552 INFO L448 ceAbstractionStarter]: For program point L2-3(line 2) no Hoare annotation was computed. [2018-12-03 05:38:24,552 INFO L451 ceAbstractionStarter]: At program point __VERIFIER_assertENTRY(line 2) the Hoare annotation is: true [2018-12-03 05:38:24,552 INFO L448 ceAbstractionStarter]: For program point __VERIFIER_assertEXIT(line 2) no Hoare annotation was computed. [2018-12-03 05:38:24,552 INFO L448 ceAbstractionStarter]: For program point __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION(line 2) no Hoare annotation was computed. [2018-12-03 05:38:24,552 INFO L448 ceAbstractionStarter]: For program point L2(line 2) no Hoare annotation was computed. [2018-12-03 05:38:24,557 WARN L416 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2018-12-03 05:38:24,558 WARN L416 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2018-12-03 05:38:24,558 WARN L416 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2018-12-03 05:38:24,558 WARN L416 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~x~0_24,QUANTIFIED] [2018-12-03 05:38:24,558 WARN L416 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2018-12-03 05:38:24,559 WARN L416 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~x~0_24,QUANTIFIED] [2018-12-03 05:38:24,559 WARN L416 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2018-12-03 05:38:24,559 WARN L416 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~x~0_24,QUANTIFIED] [2018-12-03 05:38:24,559 WARN L416 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2018-12-03 05:38:24,561 WARN L416 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2018-12-03 05:38:24,562 WARN L416 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2018-12-03 05:38:24,562 WARN L416 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2018-12-03 05:38:24,562 WARN L416 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~x~0_24,QUANTIFIED] [2018-12-03 05:38:24,562 WARN L416 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2018-12-03 05:38:24,562 WARN L416 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~x~0_24,QUANTIFIED] [2018-12-03 05:38:24,562 WARN L416 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2018-12-03 05:38:24,562 WARN L416 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~x~0_24,QUANTIFIED] [2018-12-03 05:38:24,562 WARN L416 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2018-12-03 05:38:24,564 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 03.12 05:38:24 BoogieIcfgContainer [2018-12-03 05:38:24,564 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-12-03 05:38:24,564 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2018-12-03 05:38:24,564 INFO L271 PluginConnector]: Initializing Witness Printer... [2018-12-03 05:38:24,565 INFO L276 PluginConnector]: Witness Printer initialized [2018-12-03 05:38:24,565 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.12 05:31:17" (3/4) ... [2018-12-03 05:38:24,567 INFO L144 WitnessPrinter]: Generating witness for correct program [2018-12-03 05:38:24,571 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure ULTIMATE.init [2018-12-03 05:38:24,571 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure main [2018-12-03 05:38:24,571 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure __VERIFIER_assert [2018-12-03 05:38:24,573 INFO L905 BoogieBacktranslator]: Reduced CFG by removing 7 nodes and edges [2018-12-03 05:38:24,573 INFO L905 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2018-12-03 05:38:24,574 INFO L905 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2018-12-03 05:38:24,589 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) [2018-12-03 05:38:24,595 INFO L145 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/working_dir_2b3e5a01-7f4c-4d0e-9b0e-8b718c502818/bin-2019/utaipan/witness.graphml [2018-12-03 05:38:24,595 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2018-12-03 05:38:24,596 INFO L168 Benchmark]: Toolchain (without parser) took 427296.48 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 139.5 MB). Free memory was 944.7 MB in the beginning and 908.4 MB in the end (delta: 36.4 MB). Peak memory consumption was 175.8 MB. Max. memory is 11.5 GB. [2018-12-03 05:38:24,596 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. [2018-12-03 05:38:24,596 INFO L168 Benchmark]: CACSL2BoogieTranslator took 123.66 ms. Allocated memory is still 1.0 GB. Free memory was 944.7 MB in the beginning and 934.0 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. [2018-12-03 05:38:24,597 INFO L168 Benchmark]: Boogie Procedure Inliner took 12.90 ms. Allocated memory is still 1.0 GB. Free memory is still 934.0 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-12-03 05:38:24,597 INFO L168 Benchmark]: Boogie Preprocessor took 15.27 ms. Allocated memory is still 1.0 GB. Free memory was 934.0 MB in the beginning and 928.6 MB in the end (delta: 5.4 MB). Peak memory consumption was 5.4 MB. Max. memory is 11.5 GB. [2018-12-03 05:38:24,597 INFO L168 Benchmark]: RCFGBuilder took 495.90 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 139.5 MB). Free memory was 928.6 MB in the beginning and 1.1 GB in the end (delta: -186.2 MB). Peak memory consumption was 13.7 MB. Max. memory is 11.5 GB. [2018-12-03 05:38:24,597 INFO L168 Benchmark]: TraceAbstraction took 426615.27 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 908.4 MB in the end (delta: 206.5 MB). Peak memory consumption was 206.5 MB. Max. memory is 11.5 GB. [2018-12-03 05:38:24,598 INFO L168 Benchmark]: Witness Printer took 30.79 ms. Allocated memory is still 1.2 GB. Free memory is still 908.4 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-12-03 05:38:24,599 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 123.66 ms. Allocated memory is still 1.0 GB. Free memory was 944.7 MB in the beginning and 934.0 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 12.90 ms. Allocated memory is still 1.0 GB. Free memory is still 934.0 MB. There was no memory consumed. Max. memory is 11.5 GB. * Boogie Preprocessor took 15.27 ms. Allocated memory is still 1.0 GB. Free memory was 934.0 MB in the beginning and 928.6 MB in the end (delta: 5.4 MB). Peak memory consumption was 5.4 MB. Max. memory is 11.5 GB. * RCFGBuilder took 495.90 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 139.5 MB). Free memory was 928.6 MB in the beginning and 1.1 GB in the end (delta: -186.2 MB). Peak memory consumption was 13.7 MB. Max. memory is 11.5 GB. * TraceAbstraction took 426615.27 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 908.4 MB in the end (delta: 206.5 MB). Peak memory consumption was 206.5 MB. Max. memory is 11.5 GB. * Witness Printer took 30.79 ms. Allocated memory is still 1.2 GB. Free memory is still 908.4 MB. There was no memory consumed. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.boogie.preprocessor: - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven - GenericResult: Unfinished Backtranslation 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 [2018-12-03 05:38:24,602 WARN L416 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2018-12-03 05:38:24,602 WARN L416 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2018-12-03 05:38:24,602 WARN L416 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2018-12-03 05:38:24,602 WARN L416 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~x~0_24,QUANTIFIED] [2018-12-03 05:38:24,602 WARN L416 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2018-12-03 05:38:24,602 WARN L416 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~x~0_24,QUANTIFIED] [2018-12-03 05:38:24,602 WARN L416 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2018-12-03 05:38:24,603 WARN L416 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~x~0_24,QUANTIFIED] [2018-12-03 05:38:24,603 WARN L416 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2018-12-03 05:38:24,603 WARN L416 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2018-12-03 05:38:24,603 WARN L416 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2018-12-03 05:38:24,603 WARN L416 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2018-12-03 05:38:24,603 WARN L416 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~x~0_24,QUANTIFIED] [2018-12-03 05:38:24,603 WARN L416 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2018-12-03 05:38:24,603 WARN L416 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~x~0_24,QUANTIFIED] [2018-12-03 05:38:24,604 WARN L416 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2018-12-03 05:38:24,604 WARN L416 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~x~0_24,QUANTIFIED] [2018-12-03 05:38:24,604 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, 426.5s OverallTime, 4 OverallIterations, 8 TraceHistogramMax, 194.3s AutomataDifference, 0.0s DeadEndRemovalTime, 42.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 40 SDtfs, 6 SDslu, 138 SDs, 0 SdLazy, 86 SolverSat, 15 SolverUnsat, 9 SolverUnknown, 0 SolverNotchecked, 32.6s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 134 GetRequests, 76 SyntacticMatches, 11 SemanticMatches, 47 ConstructedPredicates, 10 IntricatePredicates, 0 DeprecatedPredicates, 93 ImplicationChecksByTransitivity, 333.5s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=19occurred in iteration=3, 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, 21 NumberOfFragments, 113 HoareAnnotationTreeSize, 11 FomulaSimplifications, 635 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 7 FomulaSimplificationsInter, 100 FormulaSimplificationTreeSizeReductionInter, 42.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 2.5s SatisfiabilityAnalysisTime, 187.3s InterpolantComputationTime, 78 NumberOfCodeBlocks, 74 NumberOfCodeBlocksAsserted, 10 NumberOfCheckSat, 118 ConstructedInterpolants, 5 QuantifiedInterpolants, 14190 SizeOfPredicates, 17 NumberOfNonLiveVariables, 156 ConjunctsInSsa, 55 ConjunctsInUnsatCore, 10 InterpolantComputations, 2 PerfectInterpolantSequences, 36/80 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...