./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 0cd3be1d Calling Ultimate with: java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/working_dir_f997210b-ba63-4547-bf97-29a71211dc5e/bin-2019/uautomizer/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/working_dir_f997210b-ba63-4547-bf97-29a71211dc5e/bin-2019/uautomizer/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/working_dir_f997210b-ba63-4547-bf97-29a71211dc5e/bin-2019/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/working_dir_f997210b-ba63-4547-bf97-29a71211dc5e/bin-2019/uautomizer/config/AutomizerReach.xml -i ../../sv-benchmarks/c/floats-esbmc-regression/Float_div_true-unreach-call.i -s /tmp/vcloud-vcloud-master/worker/working_dir_f997210b-ba63-4547-bf97-29a71211dc5e/bin-2019/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/working_dir_f997210b-ba63-4547-bf97-29a71211dc5e/bin-2019/uautomizer --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 Automizer --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_f997210b-ba63-4547-bf97-29a71211dc5e/bin-2019/uautomizer/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/working_dir_f997210b-ba63-4547-bf97-29a71211dc5e/bin-2019/uautomizer/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/working_dir_f997210b-ba63-4547-bf97-29a71211dc5e/bin-2019/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/working_dir_f997210b-ba63-4547-bf97-29a71211dc5e/bin-2019/uautomizer/config/AutomizerReach.xml -i ../../sv-benchmarks/c/floats-esbmc-regression/Float_div_true-unreach-call.i -s /tmp/vcloud-vcloud-master/worker/working_dir_f997210b-ba63-4547-bf97-29a71211dc5e/bin-2019/uautomizer/config/svcomp-Reach-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/working_dir_f997210b-ba63-4547-bf97-29a71211dc5e/bin-2019/uautomizer --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 Automizer --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 0.1.23-0cd3be1 [2018-11-28 13:36:14,483 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-11-28 13:36:14,484 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-11-28 13:36:14,491 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-11-28 13:36:14,491 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-11-28 13:36:14,492 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-11-28 13:36:14,493 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-11-28 13:36:14,494 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-11-28 13:36:14,495 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-11-28 13:36:14,495 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-11-28 13:36:14,496 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-11-28 13:36:14,496 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-11-28 13:36:14,497 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-11-28 13:36:14,497 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-11-28 13:36:14,498 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-11-28 13:36:14,498 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-11-28 13:36:14,499 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-11-28 13:36:14,500 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-11-28 13:36:14,501 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-11-28 13:36:14,502 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-11-28 13:36:14,503 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-11-28 13:36:14,504 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-11-28 13:36:14,505 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-11-28 13:36:14,506 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-11-28 13:36:14,506 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-11-28 13:36:14,506 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-11-28 13:36:14,507 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-11-28 13:36:14,507 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-11-28 13:36:14,508 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-11-28 13:36:14,509 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-11-28 13:36:14,509 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-11-28 13:36:14,509 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-11-28 13:36:14,509 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-11-28 13:36:14,510 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-11-28 13:36:14,510 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-11-28 13:36:14,511 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-11-28 13:36:14,511 INFO L98 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/working_dir_f997210b-ba63-4547-bf97-29a71211dc5e/bin-2019/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf [2018-11-28 13:36:14,520 INFO L110 SettingsManager]: Loading preferences was successful [2018-11-28 13:36:14,520 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-11-28 13:36:14,521 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-11-28 13:36:14,521 INFO L133 SettingsManager]: * ... calls to implemented procedures=ONLY_FOR_CONCURRENT_PROGRAMS [2018-11-28 13:36:14,521 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-11-28 13:36:14,521 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-11-28 13:36:14,521 INFO L133 SettingsManager]: * Use SBE=true [2018-11-28 13:36:14,522 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-11-28 13:36:14,522 INFO L133 SettingsManager]: * sizeof long=4 [2018-11-28 13:36:14,522 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-11-28 13:36:14,522 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-11-28 13:36:14,522 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-11-28 13:36:14,522 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-11-28 13:36:14,522 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-11-28 13:36:14,522 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-11-28 13:36:14,523 INFO L133 SettingsManager]: * sizeof long double=12 [2018-11-28 13:36:14,523 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-11-28 13:36:14,523 INFO L133 SettingsManager]: * Use constant arrays=true [2018-11-28 13:36:14,523 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-11-28 13:36:14,523 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-11-28 13:36:14,523 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-11-28 13:36:14,523 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-11-28 13:36:14,524 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-11-28 13:36:14,524 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-11-28 13:36:14,524 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-11-28 13:36:14,524 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-11-28 13:36:14,524 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-11-28 13:36:14,524 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-11-28 13:36:14,524 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-11-28 13:36:14,524 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-11-28 13:36:14,525 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_f997210b-ba63-4547-bf97-29a71211dc5e/bin-2019/uautomizer 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 -> Automizer 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 [2018-11-28 13:36:14,550 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-11-28 13:36:14,557 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-11-28 13:36:14,559 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-11-28 13:36:14,560 INFO L271 PluginConnector]: Initializing CDTParser... [2018-11-28 13:36:14,561 INFO L276 PluginConnector]: CDTParser initialized [2018-11-28 13:36:14,561 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/working_dir_f997210b-ba63-4547-bf97-29a71211dc5e/bin-2019/uautomizer/../../sv-benchmarks/c/floats-esbmc-regression/Float_div_true-unreach-call.i [2018-11-28 13:36:14,596 INFO L221 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_f997210b-ba63-4547-bf97-29a71211dc5e/bin-2019/uautomizer/data/8d2e2e955/45d5b2ec448e408288a450e9139fa986/FLAG97e8ffb2e [2018-11-28 13:36:14,902 INFO L307 CDTParser]: Found 1 translation units. [2018-11-28 13:36:14,903 INFO L161 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/working_dir_f997210b-ba63-4547-bf97-29a71211dc5e/sv-benchmarks/c/floats-esbmc-regression/Float_div_true-unreach-call.i [2018-11-28 13:36:14,907 INFO L355 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_f997210b-ba63-4547-bf97-29a71211dc5e/bin-2019/uautomizer/data/8d2e2e955/45d5b2ec448e408288a450e9139fa986/FLAG97e8ffb2e [2018-11-28 13:36:14,917 INFO L363 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/working_dir_f997210b-ba63-4547-bf97-29a71211dc5e/bin-2019/uautomizer/data/8d2e2e955/45d5b2ec448e408288a450e9139fa986 [2018-11-28 13:36:14,919 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-11-28 13:36:14,920 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2018-11-28 13:36:14,921 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-11-28 13:36:14,921 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-11-28 13:36:14,923 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-11-28 13:36:14,924 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 01:36:14" (1/1) ... [2018-11-28 13:36:14,926 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7bce3877 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 01:36:14, skipping insertion in model container [2018-11-28 13:36:14,926 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 01:36:14" (1/1) ... [2018-11-28 13:36:14,930 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-11-28 13:36:14,939 INFO L176 MainTranslator]: Built tables and reachable declarations [2018-11-28 13:36:15,037 INFO L203 PostProcessor]: Analyzing one entry point: main [2018-11-28 13:36:15,040 INFO L191 MainTranslator]: Completed pre-run [2018-11-28 13:36:15,049 INFO L203 PostProcessor]: Analyzing one entry point: main [2018-11-28 13:36:15,057 INFO L195 MainTranslator]: Completed translation [2018-11-28 13:36:15,057 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 01:36:15 WrapperNode [2018-11-28 13:36:15,058 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-11-28 13:36:15,058 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-11-28 13:36:15,058 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-11-28 13:36:15,058 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-11-28 13:36:15,064 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 01:36:15" (1/1) ... [2018-11-28 13:36:15,067 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 01:36:15" (1/1) ... [2018-11-28 13:36:15,071 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-11-28 13:36:15,071 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-11-28 13:36:15,071 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-11-28 13:36:15,071 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-11-28 13:36:15,077 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 01:36:15" (1/1) ... [2018-11-28 13:36:15,077 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 01:36:15" (1/1) ... [2018-11-28 13:36:15,077 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 01:36:15" (1/1) ... [2018-11-28 13:36:15,078 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 01:36:15" (1/1) ... [2018-11-28 13:36:15,080 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 01:36:15" (1/1) ... [2018-11-28 13:36:15,164 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 01:36:15" (1/1) ... [2018-11-28 13:36:15,165 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 01:36:15" (1/1) ... [2018-11-28 13:36:15,166 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-11-28 13:36:15,168 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-11-28 13:36:15,168 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-11-28 13:36:15,168 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-11-28 13:36:15,169 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 01:36:15" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_f997210b-ba63-4547-bf97-29a71211dc5e/bin-2019/uautomizer/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-11-28 13:36:15,211 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-11-28 13:36:15,211 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-11-28 13:36:15,211 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-11-28 13:36:15,211 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-11-28 13:36:15,211 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-11-28 13:36:15,212 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-11-28 13:36:15,212 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2018-11-28 13:36:15,212 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2018-11-28 13:36:15,327 INFO L275 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-11-28 13:36:15,327 INFO L280 CfgBuilder]: Removed 1 assue(true) statements. [2018-11-28 13:36:15,328 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 01:36:15 BoogieIcfgContainer [2018-11-28 13:36:15,328 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-11-28 13:36:15,328 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-11-28 13:36:15,328 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-11-28 13:36:15,330 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-11-28 13:36:15,330 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.11 01:36:14" (1/3) ... [2018-11-28 13:36:15,331 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@17c28d8c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 01:36:15, skipping insertion in model container [2018-11-28 13:36:15,331 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 01:36:15" (2/3) ... [2018-11-28 13:36:15,331 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@17c28d8c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 01:36:15, skipping insertion in model container [2018-11-28 13:36:15,331 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 01:36:15" (3/3) ... [2018-11-28 13:36:15,332 INFO L112 eAbstractionObserver]: Analyzing ICFG Float_div_true-unreach-call.i [2018-11-28 13:36:15,338 INFO L156 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-11-28 13:36:15,342 INFO L168 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-11-28 13:36:15,354 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-11-28 13:36:15,379 INFO L133 ementStrategyFactory]: Using default assertion order modulation [2018-11-28 13:36:15,380 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-11-28 13:36:15,380 INFO L383 AbstractCegarLoop]: Hoare is true [2018-11-28 13:36:15,380 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-11-28 13:36:15,380 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-11-28 13:36:15,380 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-11-28 13:36:15,380 INFO L387 AbstractCegarLoop]: Difference is false [2018-11-28 13:36:15,380 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-11-28 13:36:15,380 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-11-28 13:36:15,394 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states. [2018-11-28 13:36:15,399 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2018-11-28 13:36:15,399 INFO L394 BasicCegarLoop]: Found error trace [2018-11-28 13:36:15,400 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-28 13:36:15,401 INFO L423 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-28 13:36:15,406 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 13:36:15,407 INFO L82 PathProgramCache]: Analyzing trace with hash -14991171, now seen corresponding path program 1 times [2018-11-28 13:36:15,408 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-28 13:36:15,408 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-28 13:36:15,438 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 13:36:15,439 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-28 13:36:15,439 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 13:36:15,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-28 13:36:15,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-28 13:36:15,482 INFO L469 BasicCegarLoop]: Counterexample might be feasible [2018-11-28 13:36:15,501 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 28.11 01:36:15 BoogieIcfgContainer [2018-11-28 13:36:15,501 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-11-28 13:36:15,502 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2018-11-28 13:36:15,502 INFO L271 PluginConnector]: Initializing Witness Printer... [2018-11-28 13:36:15,502 INFO L276 PluginConnector]: Witness Printer initialized [2018-11-28 13:36:15,502 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 01:36:15" (3/4) ... [2018-11-28 13:36:15,505 INFO L147 WitnessPrinter]: No result that supports witness generation found [2018-11-28 13:36:15,505 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2018-11-28 13:36:15,505 INFO L168 Benchmark]: Toolchain (without parser) took 585.59 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 151.0 MB). Free memory was 952.2 MB in the beginning and 1.1 GB in the end (delta: -165.9 MB). There was no memory consumed. Max. memory is 11.5 GB. [2018-11-28 13:36:15,506 INFO L168 Benchmark]: CDTParser took 0.12 ms. Allocated memory is still 1.0 GB. Free memory is still 979.6 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-11-28 13:36:15,507 INFO L168 Benchmark]: CACSL2BoogieTranslator took 136.81 ms. Allocated memory is still 1.0 GB. Free memory was 952.2 MB in the beginning and 941.4 MB in the end (delta: 10.8 MB). Peak memory consumption was 10.8 MB. Max. memory is 11.5 GB. [2018-11-28 13:36:15,507 INFO L168 Benchmark]: Boogie Procedure Inliner took 13.07 ms. Allocated memory is still 1.0 GB. Free memory is still 941.4 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-11-28 13:36:15,508 INFO L168 Benchmark]: Boogie Preprocessor took 94.72 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 151.0 MB). Free memory was 941.4 MB in the beginning and 1.1 GB in the end (delta: -206.3 MB). Peak memory consumption was 12.7 MB. Max. memory is 11.5 GB. [2018-11-28 13:36:15,508 INFO L168 Benchmark]: RCFGBuilder took 159.84 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: 15.4 MB). Peak memory consumption was 15.4 MB. Max. memory is 11.5 GB. [2018-11-28 13:36:15,509 INFO L168 Benchmark]: TraceAbstraction took 173.04 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: 10.6 MB). Peak memory consumption was 10.6 MB. Max. memory is 11.5 GB. [2018-11-28 13:36:15,509 INFO L168 Benchmark]: Witness Printer took 3.21 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: 3.5 MB). Peak memory consumption was 3.5 MB. Max. memory is 11.5 GB. [2018-11-28 13:36:15,512 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.12 ms. Allocated memory is still 1.0 GB. Free memory is still 979.6 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 136.81 ms. Allocated memory is still 1.0 GB. Free memory was 952.2 MB in the beginning and 941.4 MB in the end (delta: 10.8 MB). Peak memory consumption was 10.8 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 13.07 ms. Allocated memory is still 1.0 GB. Free memory is still 941.4 MB. There was no memory consumed. Max. memory is 11.5 GB. * Boogie Preprocessor took 94.72 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 151.0 MB). Free memory was 941.4 MB in the beginning and 1.1 GB in the end (delta: -206.3 MB). Peak memory consumption was 12.7 MB. Max. memory is 11.5 GB. * RCFGBuilder took 159.84 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: 15.4 MB). Peak memory consumption was 15.4 MB. Max. memory is 11.5 GB. * TraceAbstraction took 173.04 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: 10.6 MB). Peak memory consumption was 10.6 MB. Max. memory is 11.5 GB. * Witness Printer took 3.21 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: 3.5 MB). Peak memory consumption was 3.5 MB. 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 0.1.23-0cd3be1 [2018-11-28 13:36:16,946 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-11-28 13:36:16,948 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-11-28 13:36:16,956 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-11-28 13:36:16,956 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-11-28 13:36:16,957 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-11-28 13:36:16,958 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-11-28 13:36:16,959 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-11-28 13:36:16,960 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-11-28 13:36:16,960 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-11-28 13:36:16,961 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-11-28 13:36:16,961 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-11-28 13:36:16,961 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-11-28 13:36:16,962 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-11-28 13:36:16,963 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-11-28 13:36:16,963 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-11-28 13:36:16,964 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-11-28 13:36:16,965 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-11-28 13:36:16,967 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-11-28 13:36:16,968 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-11-28 13:36:16,968 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-11-28 13:36:16,969 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-11-28 13:36:16,970 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-11-28 13:36:16,970 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-11-28 13:36:16,971 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-11-28 13:36:16,971 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-11-28 13:36:16,972 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-11-28 13:36:16,972 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-11-28 13:36:16,973 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-11-28 13:36:16,973 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-11-28 13:36:16,974 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-11-28 13:36:16,974 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-11-28 13:36:16,975 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-11-28 13:36:16,975 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-11-28 13:36:16,976 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-11-28 13:36:16,976 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-11-28 13:36:16,977 INFO L98 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/working_dir_f997210b-ba63-4547-bf97-29a71211dc5e/bin-2019/uautomizer/config/svcomp-Reach-32bit-Automizer_Bitvector.epf [2018-11-28 13:36:16,987 INFO L110 SettingsManager]: Loading preferences was successful [2018-11-28 13:36:16,987 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-11-28 13:36:16,987 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-11-28 13:36:16,988 INFO L133 SettingsManager]: * ... calls to implemented procedures=ONLY_FOR_CONCURRENT_PROGRAMS [2018-11-28 13:36:16,988 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-11-28 13:36:16,988 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-11-28 13:36:16,988 INFO L133 SettingsManager]: * Use SBE=true [2018-11-28 13:36:16,989 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-11-28 13:36:16,989 INFO L133 SettingsManager]: * sizeof long=4 [2018-11-28 13:36:16,989 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-11-28 13:36:16,989 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-11-28 13:36:16,989 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-11-28 13:36:16,989 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-11-28 13:36:16,989 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-11-28 13:36:16,989 INFO L133 SettingsManager]: * Use bitvectors instead of ints=true [2018-11-28 13:36:16,990 INFO L133 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2018-11-28 13:36:16,990 INFO L133 SettingsManager]: * sizeof long double=12 [2018-11-28 13:36:16,990 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-11-28 13:36:16,990 INFO L133 SettingsManager]: * Use constant arrays=true [2018-11-28 13:36:16,991 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-11-28 13:36:16,992 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-11-28 13:36:16,992 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-11-28 13:36:16,992 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-11-28 13:36:16,992 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-11-28 13:36:16,992 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-11-28 13:36:16,992 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-11-28 13:36:16,992 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-11-28 13:36:16,993 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-11-28 13:36:16,993 INFO L133 SettingsManager]: * Trace refinement strategy=WOLF [2018-11-28 13:36:16,993 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-11-28 13:36:16,993 INFO L133 SettingsManager]: * Command for external solver=cvc4 --incremental --rewrite-divk --print-success --lang smt [2018-11-28 13:36:16,993 INFO L133 SettingsManager]: * Logic for external solver=AUFBV [2018-11-28 13:36:16,993 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_f997210b-ba63-4547-bf97-29a71211dc5e/bin-2019/uautomizer 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 -> Automizer 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 [2018-11-28 13:36:17,017 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-11-28 13:36:17,025 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-11-28 13:36:17,027 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-11-28 13:36:17,028 INFO L271 PluginConnector]: Initializing CDTParser... [2018-11-28 13:36:17,028 INFO L276 PluginConnector]: CDTParser initialized [2018-11-28 13:36:17,029 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/working_dir_f997210b-ba63-4547-bf97-29a71211dc5e/bin-2019/uautomizer/../../sv-benchmarks/c/floats-esbmc-regression/Float_div_true-unreach-call.i [2018-11-28 13:36:17,066 INFO L221 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_f997210b-ba63-4547-bf97-29a71211dc5e/bin-2019/uautomizer/data/ba2a1c99c/8aebbceea9da4a1191e1701da370e243/FLAGad0e10afb [2018-11-28 13:36:17,393 INFO L307 CDTParser]: Found 1 translation units. [2018-11-28 13:36:17,394 INFO L161 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/working_dir_f997210b-ba63-4547-bf97-29a71211dc5e/sv-benchmarks/c/floats-esbmc-regression/Float_div_true-unreach-call.i [2018-11-28 13:36:17,397 INFO L355 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_f997210b-ba63-4547-bf97-29a71211dc5e/bin-2019/uautomizer/data/ba2a1c99c/8aebbceea9da4a1191e1701da370e243/FLAGad0e10afb [2018-11-28 13:36:17,405 INFO L363 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/working_dir_f997210b-ba63-4547-bf97-29a71211dc5e/bin-2019/uautomizer/data/ba2a1c99c/8aebbceea9da4a1191e1701da370e243 [2018-11-28 13:36:17,407 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-11-28 13:36:17,408 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2018-11-28 13:36:17,409 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-11-28 13:36:17,409 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-11-28 13:36:17,412 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-11-28 13:36:17,412 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 01:36:17" (1/1) ... [2018-11-28 13:36:17,414 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6bff065d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 01:36:17, skipping insertion in model container [2018-11-28 13:36:17,414 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 01:36:17" (1/1) ... [2018-11-28 13:36:17,419 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-11-28 13:36:17,432 INFO L176 MainTranslator]: Built tables and reachable declarations [2018-11-28 13:36:17,541 INFO L203 PostProcessor]: Analyzing one entry point: main [2018-11-28 13:36:17,547 INFO L191 MainTranslator]: Completed pre-run [2018-11-28 13:36:17,557 INFO L203 PostProcessor]: Analyzing one entry point: main [2018-11-28 13:36:17,567 INFO L195 MainTranslator]: Completed translation [2018-11-28 13:36:17,568 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 01:36:17 WrapperNode [2018-11-28 13:36:17,568 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-11-28 13:36:17,569 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-11-28 13:36:17,569 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-11-28 13:36:17,569 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-11-28 13:36:17,577 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 01:36:17" (1/1) ... [2018-11-28 13:36:17,582 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 01:36:17" (1/1) ... [2018-11-28 13:36:17,586 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-11-28 13:36:17,587 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-11-28 13:36:17,587 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-11-28 13:36:17,587 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-11-28 13:36:17,592 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 01:36:17" (1/1) ... [2018-11-28 13:36:17,593 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 01:36:17" (1/1) ... [2018-11-28 13:36:17,593 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 01:36:17" (1/1) ... [2018-11-28 13:36:17,594 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 01:36:17" (1/1) ... [2018-11-28 13:36:17,598 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 01:36:17" (1/1) ... [2018-11-28 13:36:17,601 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 01:36:17" (1/1) ... [2018-11-28 13:36:17,602 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 01:36:17" (1/1) ... [2018-11-28 13:36:17,603 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-11-28 13:36:17,603 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-11-28 13:36:17,603 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-11-28 13:36:17,604 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-11-28 13:36:17,604 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 01:36:17" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_f997210b-ba63-4547-bf97-29a71211dc5e/bin-2019/uautomizer/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-11-28 13:36:17,684 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-11-28 13:36:17,684 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-11-28 13:36:17,685 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-11-28 13:36:17,685 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-11-28 13:36:17,685 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-11-28 13:36:17,685 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-11-28 13:36:17,685 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2018-11-28 13:36:17,685 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2018-11-28 13:36:18,167 INFO L275 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-11-28 13:36:18,167 INFO L280 CfgBuilder]: Removed 1 assue(true) statements. [2018-11-28 13:36:18,167 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 01:36:18 BoogieIcfgContainer [2018-11-28 13:36:18,167 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-11-28 13:36:18,168 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-11-28 13:36:18,168 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-11-28 13:36:18,171 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-11-28 13:36:18,171 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.11 01:36:17" (1/3) ... [2018-11-28 13:36:18,171 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@75a2971f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 01:36:18, skipping insertion in model container [2018-11-28 13:36:18,172 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 01:36:17" (2/3) ... [2018-11-28 13:36:18,172 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@75a2971f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 01:36:18, skipping insertion in model container [2018-11-28 13:36:18,172 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 01:36:18" (3/3) ... [2018-11-28 13:36:18,173 INFO L112 eAbstractionObserver]: Analyzing ICFG Float_div_true-unreach-call.i [2018-11-28 13:36:18,179 INFO L156 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-11-28 13:36:18,182 INFO L168 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-11-28 13:36:18,191 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-11-28 13:36:18,209 INFO L133 ementStrategyFactory]: Using default assertion order modulation [2018-11-28 13:36:18,210 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-11-28 13:36:18,210 INFO L383 AbstractCegarLoop]: Hoare is true [2018-11-28 13:36:18,210 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-11-28 13:36:18,210 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-11-28 13:36:18,210 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-11-28 13:36:18,210 INFO L387 AbstractCegarLoop]: Difference is false [2018-11-28 13:36:18,210 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-11-28 13:36:18,211 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-11-28 13:36:18,225 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states. [2018-11-28 13:36:18,229 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2018-11-28 13:36:18,229 INFO L394 BasicCegarLoop]: Found error trace [2018-11-28 13:36:18,230 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-28 13:36:18,231 INFO L423 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-28 13:36:18,234 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 13:36:18,234 INFO L82 PathProgramCache]: Analyzing trace with hash -14991171, now seen corresponding path program 1 times [2018-11-28 13:36:18,237 INFO L223 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-11-28 13:36:18,237 INFO L69 tionRefinementEngine]: Using refinement strategy WolfRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_f997210b-ba63-4547-bf97-29a71211dc5e/bin-2019/uautomizer/mathsat Starting monitored process 2 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with mathsat -unsat_core_generation=3 [2018-11-28 13:36:18,241 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-28 13:36:18,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 13:36:18,311 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-28 13:36:18,919 WARN L180 SmtUtils]: Spent 412.00 ms on a formula simplification that was a NOOP. DAG size: 11 [2018-11-28 13:36:18,929 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-28 13:36:18,929 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-11-28 13:36:18,938 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-28 13:36:18,938 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-11-28 13:36:18,941 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-11-28 13:36:18,948 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-11-28 13:36:18,948 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-28 13:36:18,949 INFO L87 Difference]: Start difference. First operand 18 states. Second operand 3 states. [2018-11-28 13:36:19,127 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-28 13:36:19,128 INFO L93 Difference]: Finished difference Result 31 states and 36 transitions. [2018-11-28 13:36:19,128 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-11-28 13:36:19,129 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 10 [2018-11-28 13:36:19,129 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-28 13:36:19,134 INFO L225 Difference]: With dead ends: 31 [2018-11-28 13:36:19,134 INFO L226 Difference]: Without dead ends: 12 [2018-11-28 13:36:19,136 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 7 SyntacticMatches, 1 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-28 13:36:19,146 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12 states. [2018-11-28 13:36:19,156 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12 to 12. [2018-11-28 13:36:19,157 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2018-11-28 13:36:19,158 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 12 transitions. [2018-11-28 13:36:19,159 INFO L78 Accepts]: Start accepts. Automaton has 12 states and 12 transitions. Word has length 10 [2018-11-28 13:36:19,159 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-28 13:36:19,159 INFO L480 AbstractCegarLoop]: Abstraction has 12 states and 12 transitions. [2018-11-28 13:36:19,159 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-11-28 13:36:19,160 INFO L276 IsEmpty]: Start isEmpty. Operand 12 states and 12 transitions. [2018-11-28 13:36:19,160 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2018-11-28 13:36:19,160 INFO L394 BasicCegarLoop]: Found error trace [2018-11-28 13:36:19,160 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-28 13:36:19,160 INFO L423 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-28 13:36:19,160 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 13:36:19,161 INFO L82 PathProgramCache]: Analyzing trace with hash -429188558, now seen corresponding path program 1 times [2018-11-28 13:36:19,161 INFO L223 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-11-28 13:36:19,161 INFO L69 tionRefinementEngine]: Using refinement strategy WolfRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_f997210b-ba63-4547-bf97-29a71211dc5e/bin-2019/uautomizer/mathsat Starting monitored process 3 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with mathsat -unsat_core_generation=3 [2018-11-28 13:36:19,177 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-28 13:36:19,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 13:36:19,262 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-28 13:36:19,929 WARN L180 SmtUtils]: Spent 425.00 ms on a formula simplification that was a NOOP. DAG size: 12 [2018-11-28 13:36:19,932 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-28 13:36:19,932 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-11-28 13:36:22,500 WARN L180 SmtUtils]: Spent 283.00 ms on a formula simplification that was a NOOP. DAG size: 7 [2018-11-28 13:36:22,508 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-28 13:36:22,516 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-28 13:36:22,516 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 6 [2018-11-28 13:36:22,517 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-11-28 13:36:22,517 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-11-28 13:36:22,517 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-11-28 13:36:22,517 INFO L87 Difference]: Start difference. First operand 12 states and 12 transitions. Second operand 6 states. [2018-11-28 13:36:25,998 WARN L180 SmtUtils]: Spent 1.23 s on a formula simplification that was a NOOP. DAG size: 11 [2018-11-28 13:36:28,731 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-28 13:36:28,731 INFO L93 Difference]: Finished difference Result 20 states and 22 transitions. [2018-11-28 13:36:28,753 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-11-28 13:36:28,754 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 11 [2018-11-28 13:36:28,754 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-28 13:36:28,754 INFO L225 Difference]: With dead ends: 20 [2018-11-28 13:36:28,754 INFO L226 Difference]: Without dead ends: 15 [2018-11-28 13:36:28,755 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 15 SyntacticMatches, 2 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 5.7s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2018-11-28 13:36:28,755 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15 states. [2018-11-28 13:36:28,757 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15 to 15. [2018-11-28 13:36:28,757 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2018-11-28 13:36:28,758 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 15 transitions. [2018-11-28 13:36:28,758 INFO L78 Accepts]: Start accepts. Automaton has 15 states and 15 transitions. Word has length 11 [2018-11-28 13:36:28,758 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-28 13:36:28,758 INFO L480 AbstractCegarLoop]: Abstraction has 15 states and 15 transitions. [2018-11-28 13:36:28,758 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-11-28 13:36:28,759 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states and 15 transitions. [2018-11-28 13:36:28,759 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2018-11-28 13:36:28,759 INFO L394 BasicCegarLoop]: Found error trace [2018-11-28 13:36:28,759 INFO L402 BasicCegarLoop]: trace histogram [4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-28 13:36:28,759 INFO L423 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-28 13:36:28,760 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 13:36:28,760 INFO L82 PathProgramCache]: Analyzing trace with hash 1090549245, now seen corresponding path program 2 times [2018-11-28 13:36:28,760 INFO L223 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-11-28 13:36:28,760 INFO L69 tionRefinementEngine]: Using refinement strategy WolfRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_f997210b-ba63-4547-bf97-29a71211dc5e/bin-2019/uautomizer/mathsat Starting monitored process 4 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with mathsat -unsat_core_generation=3 [2018-11-28 13:36:28,764 INFO L101 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2018-11-28 13:36:28,949 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-11-28 13:36:28,949 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-11-28 13:36:28,963 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-28 13:36:29,766 WARN L180 SmtUtils]: Spent 533.00 ms on a formula simplification that was a NOOP. DAG size: 15 [2018-11-28 13:36:29,769 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-28 13:36:29,769 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-11-28 13:36:38,868 WARN L180 SmtUtils]: Spent 2.76 s on a formula simplification that was a NOOP. DAG size: 11 [2018-11-28 13:36:41,668 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 .cse0 ((_ to_fp 8 24) roundNearestTiesToEven (_ bv0 32))) (not (fp.eq (fp.div roundNearestTiesToEven .cse0 .cse1) .cse0))))) is different from true [2018-11-28 13:36:43,736 WARN L832 $PredicateComparison]: unable to prove that (let ((.cse1 ((_ to_fp 8 24) roundNearestTiesToEven (/ 5.0 2.0)))) (let ((.cse0 (fp.div roundNearestTiesToEven (fp.div roundNearestTiesToEven c_main_~x1~0 .cse1) .cse1))) (or (fp.eq .cse0 ((_ to_fp 8 24) roundNearestTiesToEven (_ bv0 32))) (not (fp.eq (fp.div roundNearestTiesToEven .cse0 .cse1) .cse0))))) is different from false [2018-11-28 13:36:45,803 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 c_main_~x1~0 .cse1) .cse1))) (or (fp.eq .cse0 ((_ to_fp 8 24) roundNearestTiesToEven (_ bv0 32))) (not (fp.eq (fp.div roundNearestTiesToEven .cse0 .cse1) .cse0))))) is different from true [2018-11-28 13:36:47,898 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 [2018-11-28 13:36:49,986 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 [2018-11-28 13:36:49,994 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 9 not checked. [2018-11-28 13:36:50,004 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-28 13:36:50,004 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 10] total 15 [2018-11-28 13:36:50,004 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2018-11-28 13:36:50,005 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2018-11-28 13:36:50,005 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=105, Unknown=5, NotChecked=66, Total=210 [2018-11-28 13:36:50,005 INFO L87 Difference]: Start difference. First operand 15 states and 15 transitions. Second operand 15 states. [2018-11-28 13:36:52,110 WARN L854 $PredicateComparison]: unable to prove that (let ((.cse0 ((_ to_fp 8 24) roundNearestTiesToEven (_ bv0 32))) (.cse1 ((_ to_fp 8 24) roundNearestTiesToEven (/ 5.0 2.0)))) (and (or (fp.eq c_main_~x~0 .cse0) (not (fp.eq c_main_~x1~0 c_main_~x~0))) (= c_main_~x1~0 (fp.div roundNearestTiesToEven ((_ to_fp 8 24) roundNearestTiesToEven 1.0) .cse1)) (let ((.cse2 (fp.div roundNearestTiesToEven (fp.div roundNearestTiesToEven (fp.div roundNearestTiesToEven c_main_~x1~0 .cse1) .cse1) .cse1))) (or (not (fp.eq (fp.div roundNearestTiesToEven .cse2 .cse1) .cse2)) (fp.eq .cse2 .cse0))))) is different from true [2018-11-28 13:36:55,143 WARN L180 SmtUtils]: Spent 2.09 s on a formula simplification. DAG size of input: 24 DAG size of output: 13 [2018-11-28 13:37:00,197 WARN L180 SmtUtils]: Spent 3.90 s on a formula simplification. DAG size of input: 24 DAG size of output: 14 [2018-11-28 13:37:08,107 WARN L180 SmtUtils]: Spent 2.74 s on a formula simplification that was a NOOP. DAG size: 17 [2018-11-28 13:37:17,336 WARN L180 SmtUtils]: Spent 4.71 s on a formula simplification that was a NOOP. DAG size: 14 [2018-11-28 13:37:22,086 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-28 13:37:22,086 INFO L93 Difference]: Finished difference Result 26 states and 28 transitions. [2018-11-28 13:37:22,087 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2018-11-28 13:37:22,087 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 14 [2018-11-28 13:37:22,087 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-28 13:37:22,087 INFO L225 Difference]: With dead ends: 26 [2018-11-28 13:37:22,087 INFO L226 Difference]: Without dead ends: 18 [2018-11-28 13:37:22,088 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 12 SyntacticMatches, 2 SemanticMatches, 20 ConstructedPredicates, 4 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 47.0s TimeCoverageRelationStatistics Valid=69, Invalid=247, Unknown=6, NotChecked=140, Total=462 [2018-11-28 13:37:22,088 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18 states. [2018-11-28 13:37:22,091 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18 to 18. [2018-11-28 13:37:22,091 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2018-11-28 13:37:22,092 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 18 transitions. [2018-11-28 13:37:22,092 INFO L78 Accepts]: Start accepts. Automaton has 18 states and 18 transitions. Word has length 14 [2018-11-28 13:37:22,092 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-28 13:37:22,092 INFO L480 AbstractCegarLoop]: Abstraction has 18 states and 18 transitions. [2018-11-28 13:37:22,093 INFO L481 AbstractCegarLoop]: Interpolant automaton has 15 states. [2018-11-28 13:37:22,093 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 18 transitions. [2018-11-28 13:37:22,093 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2018-11-28 13:37:22,093 INFO L394 BasicCegarLoop]: Found error trace [2018-11-28 13:37:22,093 INFO L402 BasicCegarLoop]: trace histogram [7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-28 13:37:22,094 INFO L423 AbstractCegarLoop]: === Iteration 4 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-28 13:37:22,094 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 13:37:22,094 INFO L82 PathProgramCache]: Analyzing trace with hash -1945796014, now seen corresponding path program 3 times [2018-11-28 13:37:22,094 INFO L223 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-11-28 13:37:22,094 INFO L69 tionRefinementEngine]: Using refinement strategy WolfRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_f997210b-ba63-4547-bf97-29a71211dc5e/bin-2019/uautomizer/mathsat Starting monitored process 5 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with mathsat -unsat_core_generation=3 [2018-11-28 13:37:22,099 INFO L101 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2018-11-28 13:37:22,305 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2018-11-28 13:37:22,305 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-11-28 13:37:22,319 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-28 13:37:23,045 WARN L180 SmtUtils]: Spent 170.00 ms on a formula simplification that was a NOOP. DAG size: 7 [2018-11-28 13:37:32,803 WARN L180 SmtUtils]: Spent 5.65 s on a formula simplification that was a NOOP. DAG size: 15 [2018-11-28 13:37:34,853 WARN L832 $PredicateComparison]: unable to prove that (and (exists ((v_main_~x~0_14 (_ FloatingPoint 8 24))) (and (not (fp.eq c_main_~x~0 v_main_~x~0_14)) (= c_main_~x~0 (fp.div roundNearestTiesToEven v_main_~x~0_14 ((_ to_fp 8 24) roundNearestTiesToEven (/ 5.0 2.0)))))) (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 [2018-11-28 13:37:58,978 WARN L180 SmtUtils]: Spent 11.38 s on a formula simplification that was a NOOP. DAG size: 22 [2018-11-28 13:38:05,135 WARN L832 $PredicateComparison]: unable to prove that (or (and (= (_ bv0 32) c___VERIFIER_assert_~cond) (exists ((v_main_~x~0_14 (_ FloatingPoint 8 24))) (let ((.cse1 ((_ to_fp 8 24) roundNearestTiesToEven (/ 5.0 2.0)))) (let ((.cse0 (fp.div roundNearestTiesToEven v_main_~x~0_14 .cse1))) (and (not (fp.eq .cse0 v_main_~x~0_14)) (not (fp.eq .cse0 ((_ to_fp 8 24) roundNearestTiesToEven (_ bv0 32)))) (fp.eq (fp.div roundNearestTiesToEven .cse0 .cse1) .cse0)))))) (= (bvadd c___VERIFIER_assert_~cond (_ bv4294967295 32)) (_ bv0 32))) is different from false [2018-11-28 13:38:11,302 WARN L832 $PredicateComparison]: unable to prove that (exists ((v_main_~x~0_14 (_ FloatingPoint 8 24))) (let ((.cse1 ((_ to_fp 8 24) roundNearestTiesToEven (/ 5.0 2.0)))) (let ((.cse0 (fp.div roundNearestTiesToEven v_main_~x~0_14 .cse1))) (and (not (fp.eq .cse0 v_main_~x~0_14)) (not (fp.eq .cse0 ((_ to_fp 8 24) roundNearestTiesToEven (_ bv0 32)))) (fp.eq (fp.div roundNearestTiesToEven .cse0 .cse1) .cse0))))) is different from false [2018-11-28 13:38:13,346 WARN L854 $PredicateComparison]: unable to prove that (exists ((v_main_~x~0_14 (_ FloatingPoint 8 24))) (let ((.cse1 ((_ to_fp 8 24) roundNearestTiesToEven (/ 5.0 2.0)))) (let ((.cse0 (fp.div roundNearestTiesToEven v_main_~x~0_14 .cse1))) (and (not (fp.eq .cse0 v_main_~x~0_14)) (not (fp.eq .cse0 ((_ to_fp 8 24) roundNearestTiesToEven (_ bv0 32)))) (fp.eq (fp.div roundNearestTiesToEven .cse0 .cse1) .cse0))))) is different from true [2018-11-28 13:38:13,347 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2018-11-28 13:38:13,347 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-11-28 13:38:13,357 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-28 13:38:13,357 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2018-11-28 13:38:13,357 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2018-11-28 13:38:13,357 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2018-11-28 13:38:13,357 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=11, Unknown=7, NotChecked=24, Total=56 [2018-11-28 13:38:13,358 INFO L87 Difference]: Start difference. First operand 18 states and 18 transitions. Second operand 8 states. [2018-11-28 13:38:22,303 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-28 13:38:22,303 INFO L93 Difference]: Finished difference Result 18 states and 18 transitions. [2018-11-28 13:38:22,354 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-11-28 13:38:22,354 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 17 [2018-11-28 13:38:22,354 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-28 13:38:22,354 INFO L225 Difference]: With dead ends: 18 [2018-11-28 13:38:22,354 INFO L226 Difference]: Without dead ends: 0 [2018-11-28 13:38:22,355 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 3 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 37.1s TimeCoverageRelationStatistics Valid=14, Invalid=11, Unknown=7, NotChecked=24, Total=56 [2018-11-28 13:38:22,355 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2018-11-28 13:38:22,355 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2018-11-28 13:38:22,355 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2018-11-28 13:38:22,355 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2018-11-28 13:38:22,356 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 17 [2018-11-28 13:38:22,356 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-28 13:38:22,356 INFO L480 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2018-11-28 13:38:22,356 INFO L481 AbstractCegarLoop]: Interpolant automaton has 8 states. [2018-11-28 13:38:22,356 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2018-11-28 13:38:22,356 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2018-11-28 13:38:22,359 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2018-11-28 13:38:22,565 WARN L180 SmtUtils]: Spent 137.00 ms on a formula simplification. DAG size of input: 29 DAG size of output: 1 [2018-11-28 13:38:55,022 WARN L180 SmtUtils]: Spent 32.46 s on a formula simplification that was a NOOP. DAG size: 25 [2018-11-28 13:39:22,925 WARN L180 SmtUtils]: Spent 27.90 s on a formula simplification. DAG size of input: 34 DAG size of output: 15 [2018-11-28 13:39:22,927 INFO L451 ceAbstractionStarter]: At program point ULTIMATE.initFINAL(line -1) the Hoare annotation is: true [2018-11-28 13:39:22,927 INFO L448 ceAbstractionStarter]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2018-11-28 13:39:22,927 INFO L448 ceAbstractionStarter]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2018-11-28 13:39:22,927 INFO L451 ceAbstractionStarter]: At program point L-1(line -1) the Hoare annotation is: true [2018-11-28 13:39:22,927 INFO L451 ceAbstractionStarter]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2018-11-28 13:39:22,927 INFO L448 ceAbstractionStarter]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2018-11-28 13:39:22,927 INFO L451 ceAbstractionStarter]: At program point mainENTRY(lines 7 20) the Hoare annotation is: true [2018-11-28 13:39:22,927 INFO L448 ceAbstractionStarter]: For program point mainEXIT(lines 7 20) no Hoare annotation was computed. [2018-11-28 13:39:22,927 INFO L448 ceAbstractionStarter]: For program point L18(line 18) no Hoare annotation was computed. [2018-11-28 13:39:22,927 INFO L448 ceAbstractionStarter]: For program point mainFINAL(lines 7 20) no Hoare annotation was computed. [2018-11-28 13:39:22,928 INFO L444 ceAbstractionStarter]: At program point L12-2(lines 12 16) the Hoare annotation is: (and (exists ((v_main_~x~0_14 (_ FloatingPoint 8 24))) (and (not (fp.eq main_~x~0 v_main_~x~0_14)) (= main_~x~0 (fp.div roundNearestTiesToEven v_main_~x~0_14 ((_ to_fp 8 24) roundNearestTiesToEven (/ 5.0 2.0)))))) (= main_~x1~0 (fp.div roundNearestTiesToEven main_~x~0 ((_ to_fp 8 24) roundNearestTiesToEven (/ 5.0 2.0))))) [2018-11-28 13:39:22,928 INFO L444 ceAbstractionStarter]: At program point L12-3(lines 12 16) the Hoare annotation is: (let ((.cse0 ((_ to_fp 8 24) roundNearestTiesToEven (/ 5.0 2.0)))) (or (and (exists ((v_main_~x~0_14 (_ FloatingPoint 8 24))) (and (not (fp.eq main_~x~0 v_main_~x~0_14)) (= main_~x~0 (fp.div roundNearestTiesToEven v_main_~x~0_14 ((_ to_fp 8 24) roundNearestTiesToEven (/ 5.0 2.0)))))) (fp.eq (fp.div roundNearestTiesToEven main_~x~0 .cse0) main_~x~0)) (let ((.cse1 ((_ to_fp 8 24) roundNearestTiesToEven (_ bv0 32)))) (and (fp.eq main_~x~0 .cse1) (or (not (fp.eq (fp.div roundNearestTiesToEven main_~x1~0 .cse0) main_~x1~0)) (fp.eq main_~x1~0 .cse1)))))) [2018-11-28 13:39:22,928 INFO L448 ceAbstractionStarter]: For program point L2-1(line 2) no Hoare annotation was computed. [2018-11-28 13:39:22,928 INFO L448 ceAbstractionStarter]: For program point L2-3(line 2) no Hoare annotation was computed. [2018-11-28 13:39:22,928 INFO L451 ceAbstractionStarter]: At program point __VERIFIER_assertENTRY(line 2) the Hoare annotation is: true [2018-11-28 13:39:22,928 INFO L448 ceAbstractionStarter]: For program point __VERIFIER_assertEXIT(line 2) no Hoare annotation was computed. [2018-11-28 13:39:22,928 INFO L448 ceAbstractionStarter]: For program point __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION(line 2) no Hoare annotation was computed. [2018-11-28 13:39:22,928 INFO L448 ceAbstractionStarter]: For program point L2(line 2) no Hoare annotation was computed. [2018-11-28 13:39:22,932 WARN L416 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~x~0_14,QUANTIFIED] [2018-11-28 13:39:22,934 WARN L416 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2018-11-28 13:39:22,934 WARN L416 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~x~0_14,QUANTIFIED] [2018-11-28 13:39:22,935 WARN L416 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2018-11-28 13:39:22,935 WARN L416 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2018-11-28 13:39:22,935 WARN L416 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2018-11-28 13:39:22,937 WARN L416 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~x~0_14,QUANTIFIED] [2018-11-28 13:39:22,937 WARN L416 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2018-11-28 13:39:22,938 WARN L416 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~x~0_14,QUANTIFIED] [2018-11-28 13:39:22,938 WARN L416 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2018-11-28 13:39:22,938 WARN L416 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2018-11-28 13:39:22,938 WARN L416 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2018-11-28 13:39:22,940 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 28.11 01:39:22 BoogieIcfgContainer [2018-11-28 13:39:22,940 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-11-28 13:39:22,941 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2018-11-28 13:39:22,941 INFO L271 PluginConnector]: Initializing Witness Printer... [2018-11-28 13:39:22,941 INFO L276 PluginConnector]: Witness Printer initialized [2018-11-28 13:39:22,941 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 01:36:18" (3/4) ... [2018-11-28 13:39:22,944 INFO L144 WitnessPrinter]: Generating witness for correct program [2018-11-28 13:39:22,948 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure ULTIMATE.init [2018-11-28 13:39:22,948 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure main [2018-11-28 13:39:22,948 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure __VERIFIER_assert [2018-11-28 13:39:22,951 INFO L905 BoogieBacktranslator]: Reduced CFG by removing 7 nodes and edges [2018-11-28 13:39:22,951 INFO L905 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2018-11-28 13:39:22,951 INFO L905 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2018-11-28 13:39:22,967 WARN L221 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: (\exists v_main_~x~0_14 : C_FLOAT :: !~fp.eq~FLOAT(x, v_main_~x~0_14) && x == ~fp.div~FLOAT(~roundNearestTiesToEven, v_main_~x~0_14, ~to_fp~LONGDOUBLE(~roundNearestTiesToEven, 5/2))) && x1 == ~fp.div~FLOAT(~roundNearestTiesToEven, x, ~to_fp~LONGDOUBLE(~roundNearestTiesToEven, 5/2)) [2018-11-28 13:39:22,976 INFO L145 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/working_dir_f997210b-ba63-4547-bf97-29a71211dc5e/bin-2019/uautomizer/witness.graphml [2018-11-28 13:39:22,976 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2018-11-28 13:39:22,976 INFO L168 Benchmark]: Toolchain (without parser) took 185568.84 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 168.8 MB). Free memory was 943.4 MB in the beginning and 1.0 GB in the end (delta: -62.1 MB). Peak memory consumption was 106.7 MB. Max. memory is 11.5 GB. [2018-11-28 13:39:22,977 INFO L168 Benchmark]: CDTParser took 0.12 ms. Allocated memory is still 1.0 GB. Free memory is still 972.9 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-11-28 13:39:22,977 INFO L168 Benchmark]: CACSL2BoogieTranslator took 159.47 ms. Allocated memory is still 1.0 GB. Free memory was 943.4 MB in the beginning and 932.6 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. [2018-11-28 13:39:22,978 INFO L168 Benchmark]: Boogie Procedure Inliner took 17.66 ms. Allocated memory is still 1.0 GB. Free memory is still 932.6 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-11-28 13:39:22,978 INFO L168 Benchmark]: Boogie Preprocessor took 16.40 ms. Allocated memory is still 1.0 GB. Free memory was 932.6 MB in the beginning and 927.3 MB in the end (delta: 5.4 MB). Peak memory consumption was 5.4 MB. Max. memory is 11.5 GB. [2018-11-28 13:39:22,978 INFO L168 Benchmark]: RCFGBuilder took 564.00 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 168.8 MB). Free memory was 927.3 MB in the beginning and 1.1 GB in the end (delta: -212.1 MB). Peak memory consumption was 13.3 MB. Max. memory is 11.5 GB. [2018-11-28 13:39:22,979 INFO L168 Benchmark]: TraceAbstraction took 184772.26 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.0 GB in the end (delta: 133.9 MB). Peak memory consumption was 133.9 MB. Max. memory is 11.5 GB. [2018-11-28 13:39:22,980 INFO L168 Benchmark]: Witness Printer took 35.28 ms. Allocated memory is still 1.2 GB. Free memory is still 1.0 GB. There was no memory consumed. Max. memory is 11.5 GB. [2018-11-28 13:39:22,981 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.12 ms. Allocated memory is still 1.0 GB. Free memory is still 972.9 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 159.47 ms. Allocated memory is still 1.0 GB. Free memory was 943.4 MB in the beginning and 932.6 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 17.66 ms. Allocated memory is still 1.0 GB. Free memory is still 932.6 MB. There was no memory consumed. Max. memory is 11.5 GB. * Boogie Preprocessor took 16.40 ms. Allocated memory is still 1.0 GB. Free memory was 932.6 MB in the beginning and 927.3 MB in the end (delta: 5.4 MB). Peak memory consumption was 5.4 MB. Max. memory is 11.5 GB. * RCFGBuilder took 564.00 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 168.8 MB). Free memory was 927.3 MB in the beginning and 1.1 GB in the end (delta: -212.1 MB). Peak memory consumption was 13.3 MB. Max. memory is 11.5 GB. * TraceAbstraction took 184772.26 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.0 GB in the end (delta: 133.9 MB). Peak memory consumption was 133.9 MB. Max. memory is 11.5 GB. * Witness Printer took 35.28 ms. Allocated memory is still 1.2 GB. Free memory is still 1.0 GB. There was no memory consumed. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.boogie.preprocessor: - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~x~0_14,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_14,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 Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~x~0_14,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_14,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 * 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 [2018-11-28 13:39:22,985 WARN L416 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~x~0_14,QUANTIFIED] [2018-11-28 13:39:22,985 WARN L416 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2018-11-28 13:39:22,985 WARN L416 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~x~0_14,QUANTIFIED] [2018-11-28 13:39:22,985 WARN L416 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2018-11-28 13:39:22,985 WARN L416 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2018-11-28 13:39:22,985 WARN L416 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2018-11-28 13:39:22,985 WARN L416 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~x~0_14,QUANTIFIED] [2018-11-28 13:39:22,986 WARN L416 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2018-11-28 13:39:22,986 WARN L416 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~x~0_14,QUANTIFIED] [2018-11-28 13:39:22,986 WARN L416 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2018-11-28 13:39:22,986 WARN L416 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2018-11-28 13:39:22,986 WARN L416 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven Derived loop invariant: (\exists v_main_~x~0_14 : C_FLOAT :: !~fp.eq~FLOAT(x, v_main_~x~0_14) && x == ~fp.div~FLOAT(~roundNearestTiesToEven, v_main_~x~0_14, ~to_fp~LONGDOUBLE(~roundNearestTiesToEven, 5/2))) && x1 == ~fp.div~FLOAT(~roundNearestTiesToEven, x, ~to_fp~LONGDOUBLE(~roundNearestTiesToEven, 5/2)) - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 18 locations, 1 error locations. SAFE Result, 184.7s OverallTime, 4 OverallIterations, 7 TraceHistogramMax, 47.5s AutomataDifference, 0.0s DeadEndRemovalTime, 60.5s HoareAnnotationTime, HoareTripleCheckerStatistics: 40 SDtfs, 4 SDslu, 120 SDs, 0 SdLazy, 81 SolverSat, 10 SolverUnsat, 5 SolverUnknown, 0 SolverNotchecked, 18.4s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 82 GetRequests, 44 SyntacticMatches, 5 SemanticMatches, 33 ConstructedPredicates, 7 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 90.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=18occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s AbstIntTime, 0 AbstIntIterations, 0 AbstIntStrong, NaN AbsIntWeakeningRatio, NaN AbsIntAvgWeakeningVarsNumRemoved, NaN AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 4 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 7 LocationsWithAnnotation, 11 PreInvPairs, 20 NumberOfFragments, 73 HoareAnnotationTreeSize, 11 FomulaSimplifications, 299 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 7 FomulaSimplificationsInter, 189 FormulaSimplificationTreeSizeReductionInter, 60.5s HoareSimplificationTimeInter, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.5s SatisfiabilityAnalysisTime, 75.9s InterpolantComputationTime, 52 NumberOfCodeBlocks, 49 NumberOfCodeBlocksAsserted, 7 NumberOfCheckSat, 71 ConstructedInterpolants, 5 QuantifiedInterpolants, 7812 SizeOfPredicates, 13 NumberOfNonLiveVariables, 103 ConjunctsInSsa, 30 ConjunctsInUnsatCore, 6 InterpolantComputations, 2 PerfectInterpolantSequences, 28/50 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...