./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 aa418289 Calling Ultimate with: java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/working_dir_72544dee-2f7e-41a9-83b3-63069c466a3b/bin-2019/uautomizer/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/working_dir_72544dee-2f7e-41a9-83b3-63069c466a3b/bin-2019/uautomizer/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/working_dir_72544dee-2f7e-41a9-83b3-63069c466a3b/bin-2019/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/working_dir_72544dee-2f7e-41a9-83b3-63069c466a3b/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_72544dee-2f7e-41a9-83b3-63069c466a3b/bin-2019/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/working_dir_72544dee-2f7e-41a9-83b3-63069c466a3b/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_72544dee-2f7e-41a9-83b3-63069c466a3b/bin-2019/uautomizer/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/working_dir_72544dee-2f7e-41a9-83b3-63069c466a3b/bin-2019/uautomizer/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/working_dir_72544dee-2f7e-41a9-83b3-63069c466a3b/bin-2019/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/working_dir_72544dee-2f7e-41a9-83b3-63069c466a3b/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_72544dee-2f7e-41a9-83b3-63069c466a3b/bin-2019/uautomizer/config/svcomp-Reach-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/working_dir_72544dee-2f7e-41a9-83b3-63069c466a3b/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-aa41828 [2018-11-22 23:18:12,377 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-11-22 23:18:12,378 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-11-22 23:18:12,384 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-11-22 23:18:12,385 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-11-22 23:18:12,385 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-11-22 23:18:12,386 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-11-22 23:18:12,387 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-11-22 23:18:12,388 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-11-22 23:18:12,389 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-11-22 23:18:12,389 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-11-22 23:18:12,390 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-11-22 23:18:12,390 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-11-22 23:18:12,391 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-11-22 23:18:12,392 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-11-22 23:18:12,392 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-11-22 23:18:12,393 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-11-22 23:18:12,394 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-11-22 23:18:12,395 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-11-22 23:18:12,396 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-11-22 23:18:12,397 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-11-22 23:18:12,398 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-11-22 23:18:12,399 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-11-22 23:18:12,400 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-11-22 23:18:12,400 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-11-22 23:18:12,401 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-11-22 23:18:12,401 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-11-22 23:18:12,402 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-11-22 23:18:12,402 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-11-22 23:18:12,403 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-11-22 23:18:12,403 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-11-22 23:18:12,404 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-11-22 23:18:12,404 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-11-22 23:18:12,404 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-11-22 23:18:12,405 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-11-22 23:18:12,406 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-11-22 23:18:12,406 INFO L98 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/working_dir_72544dee-2f7e-41a9-83b3-63069c466a3b/bin-2019/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf [2018-11-22 23:18:12,413 INFO L110 SettingsManager]: Loading preferences was successful [2018-11-22 23:18:12,413 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-11-22 23:18:12,413 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-11-22 23:18:12,414 INFO L133 SettingsManager]: * ... calls to implemented procedures=ONLY_FOR_CONCURRENT_PROGRAMS [2018-11-22 23:18:12,414 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-11-22 23:18:12,414 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-11-22 23:18:12,414 INFO L133 SettingsManager]: * Use SBE=true [2018-11-22 23:18:12,414 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-11-22 23:18:12,415 INFO L133 SettingsManager]: * sizeof long=4 [2018-11-22 23:18:12,415 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-11-22 23:18:12,415 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-11-22 23:18:12,415 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-11-22 23:18:12,415 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-11-22 23:18:12,415 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-11-22 23:18:12,415 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-11-22 23:18:12,416 INFO L133 SettingsManager]: * sizeof long double=12 [2018-11-22 23:18:12,416 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-11-22 23:18:12,416 INFO L133 SettingsManager]: * Use constant arrays=true [2018-11-22 23:18:12,416 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-11-22 23:18:12,416 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-11-22 23:18:12,418 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-11-22 23:18:12,418 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-11-22 23:18:12,418 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-11-22 23:18:12,418 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-11-22 23:18:12,418 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-11-22 23:18:12,418 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-11-22 23:18:12,418 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-11-22 23:18:12,419 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-11-22 23:18:12,419 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-11-22 23:18:12,419 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-11-22 23:18:12,419 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_72544dee-2f7e-41a9-83b3-63069c466a3b/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 [2018-11-22 23:18:12,443 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-11-22 23:18:12,452 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-11-22 23:18:12,454 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-11-22 23:18:12,456 INFO L271 PluginConnector]: Initializing CDTParser... [2018-11-22 23:18:12,456 INFO L276 PluginConnector]: CDTParser initialized [2018-11-22 23:18:12,457 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/working_dir_72544dee-2f7e-41a9-83b3-63069c466a3b/bin-2019/uautomizer/../../sv-benchmarks/c/floats-esbmc-regression/Float_div_true-unreach-call.i [2018-11-22 23:18:12,501 INFO L221 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_72544dee-2f7e-41a9-83b3-63069c466a3b/bin-2019/uautomizer/data/e5da51089/5514e0f832df4af38b38de5a7d1cd317/FLAG5867eb862 [2018-11-22 23:18:12,900 INFO L307 CDTParser]: Found 1 translation units. [2018-11-22 23:18:12,901 INFO L161 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/working_dir_72544dee-2f7e-41a9-83b3-63069c466a3b/sv-benchmarks/c/floats-esbmc-regression/Float_div_true-unreach-call.i [2018-11-22 23:18:12,905 INFO L355 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_72544dee-2f7e-41a9-83b3-63069c466a3b/bin-2019/uautomizer/data/e5da51089/5514e0f832df4af38b38de5a7d1cd317/FLAG5867eb862 [2018-11-22 23:18:12,915 INFO L363 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/working_dir_72544dee-2f7e-41a9-83b3-63069c466a3b/bin-2019/uautomizer/data/e5da51089/5514e0f832df4af38b38de5a7d1cd317 [2018-11-22 23:18:12,918 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-11-22 23:18:12,919 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2018-11-22 23:18:12,920 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-11-22 23:18:12,920 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-11-22 23:18:12,923 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-11-22 23:18:12,924 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 11:18:12" (1/1) ... [2018-11-22 23:18:12,926 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@108971e4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 11:18:12, skipping insertion in model container [2018-11-22 23:18:12,926 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 11:18:12" (1/1) ... [2018-11-22 23:18:12,935 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-11-22 23:18:12,951 INFO L176 MainTranslator]: Built tables and reachable declarations [2018-11-22 23:18:13,058 INFO L201 PostProcessor]: Analyzing one entry point: main [2018-11-22 23:18:13,062 INFO L191 MainTranslator]: Completed pre-run [2018-11-22 23:18:13,074 INFO L201 PostProcessor]: Analyzing one entry point: main [2018-11-22 23:18:13,085 INFO L195 MainTranslator]: Completed translation [2018-11-22 23:18:13,085 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 11:18:13 WrapperNode [2018-11-22 23:18:13,086 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-11-22 23:18:13,086 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-11-22 23:18:13,086 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-11-22 23:18:13,086 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-11-22 23:18:13,092 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 11:18:13" (1/1) ... [2018-11-22 23:18:13,096 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 11:18:13" (1/1) ... [2018-11-22 23:18:13,099 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-11-22 23:18:13,100 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-11-22 23:18:13,100 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-11-22 23:18:13,100 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-11-22 23:18:13,105 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 11:18:13" (1/1) ... [2018-11-22 23:18:13,105 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 11:18:13" (1/1) ... [2018-11-22 23:18:13,105 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 11:18:13" (1/1) ... [2018-11-22 23:18:13,106 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 11:18:13" (1/1) ... [2018-11-22 23:18:13,142 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 11:18:13" (1/1) ... [2018-11-22 23:18:13,145 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 11:18:13" (1/1) ... [2018-11-22 23:18:13,146 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 11:18:13" (1/1) ... [2018-11-22 23:18:13,146 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-11-22 23:18:13,147 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-11-22 23:18:13,147 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-11-22 23:18:13,147 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-11-22 23:18:13,148 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 11:18:13" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_72544dee-2f7e-41a9-83b3-63069c466a3b/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 [2018-11-22 23:18:13,179 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-11-22 23:18:13,179 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-11-22 23:18:13,179 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-11-22 23:18:13,179 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-11-22 23:18:13,180 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-11-22 23:18:13,180 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-11-22 23:18:13,180 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2018-11-22 23:18:13,180 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2018-11-22 23:18:13,270 INFO L275 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-11-22 23:18:13,270 INFO L280 CfgBuilder]: Removed 1 assue(true) statements. [2018-11-22 23:18:13,270 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 11:18:13 BoogieIcfgContainer [2018-11-22 23:18:13,270 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-11-22 23:18:13,271 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-11-22 23:18:13,271 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-11-22 23:18:13,274 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-11-22 23:18:13,274 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.11 11:18:12" (1/3) ... [2018-11-22 23:18:13,275 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4749cc0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.11 11:18:13, skipping insertion in model container [2018-11-22 23:18:13,275 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 11:18:13" (2/3) ... [2018-11-22 23:18:13,275 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4749cc0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.11 11:18:13, skipping insertion in model container [2018-11-22 23:18:13,275 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 11:18:13" (3/3) ... [2018-11-22 23:18:13,277 INFO L112 eAbstractionObserver]: Analyzing ICFG Float_div_true-unreach-call.i [2018-11-22 23:18:13,283 INFO L156 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-11-22 23:18:13,288 INFO L168 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-11-22 23:18:13,303 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-11-22 23:18:13,333 INFO L133 ementStrategyFactory]: Using default assertion order modulation [2018-11-22 23:18:13,333 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-11-22 23:18:13,334 INFO L383 AbstractCegarLoop]: Hoare is true [2018-11-22 23:18:13,334 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-11-22 23:18:13,334 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-11-22 23:18:13,334 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-11-22 23:18:13,334 INFO L387 AbstractCegarLoop]: Difference is false [2018-11-22 23:18:13,334 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-11-22 23:18:13,334 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-11-22 23:18:13,349 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states. [2018-11-22 23:18:13,352 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2018-11-22 23:18:13,353 INFO L394 BasicCegarLoop]: Found error trace [2018-11-22 23:18:13,353 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-22 23:18:13,355 INFO L423 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-22 23:18:13,358 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-22 23:18:13,359 INFO L82 PathProgramCache]: Analyzing trace with hash -14991171, now seen corresponding path program 1 times [2018-11-22 23:18:13,360 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-22 23:18:13,360 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-22 23:18:13,404 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-22 23:18:13,404 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-22 23:18:13,404 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-22 23:18:13,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-22 23:18:13,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-22 23:18:13,449 INFO L469 BasicCegarLoop]: Counterexample might be feasible ----- class de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.RCFGBacktranslator [?] CALL call ULTIMATE.init(); [?] assume true; [?] RET #32#return; [?] CALL call #t~ret0 := main(); [?] ~x~0 := 1.0;~x1~0 := ~someBinaryArithmeticFLOAToperation(~x~0, 2.5); VAL [main_~x~0=1.0] [?] assume !~someBinaryFLOATComparisonOperation(~x1~0, ~x~0); VAL [main_~x~0=1.0] [?] CALL call __VERIFIER_assert((if ~someBinaryFLOATComparisonOperation(~x~0, ~convertINTToFLOAT(0)) then 1 else 0)); VAL [|__VERIFIER_assert_#in~cond|=0] [?] ~cond := #in~cond; VAL [__VERIFIER_assert_~cond=0, |__VERIFIER_assert_#in~cond|=0] [?] assume 0 == ~cond; VAL [__VERIFIER_assert_~cond=0, |__VERIFIER_assert_#in~cond|=0] [?] assume !false; VAL [__VERIFIER_assert_~cond=0, |__VERIFIER_assert_#in~cond|=0] [?] CALL call ULTIMATE.init(); [?] ensures true; [?] RET call ULTIMATE.init(); [?] CALL call #t~ret0 := main(); [L9] ~x~0 := 1.0; [L10] ~x1~0 := ~someBinaryArithmeticFLOAToperation(~x~0, 2.5); VAL [~x~0=1.0] [L12-L16] assume !~someBinaryFLOATComparisonOperation(~x1~0, ~x~0); VAL [~x~0=1.0] [L18] CALL call __VERIFIER_assert((if ~someBinaryFLOATComparisonOperation(~x~0, ~convertINTToFLOAT(0)) then 1 else 0)); VAL [#in~cond=0] [L2] ~cond := #in~cond; VAL [#in~cond=0, ~cond=0] [L2] assume 0 == ~cond; VAL [#in~cond=0, ~cond=0] [L2] assert false; VAL [#in~cond=0, ~cond=0] ----- ----- class de.uni_freiburg.informatik.ultimate.boogie.preprocessor.BoogiePreprocessorBacktranslator [?] CALL call ULTIMATE.init(); [?] ensures true; [?] RET call ULTIMATE.init(); [?] CALL call #t~ret0 := main(); [L9] ~x~0 := 1.0; [L10] ~x1~0 := ~someBinaryArithmeticFLOAToperation(~x~0, 2.5); VAL [~x~0=1.0] [L12-L16] assume !~someBinaryFLOATComparisonOperation(~x1~0, ~x~0); VAL [~x~0=1.0] [L18] CALL call __VERIFIER_assert((if ~someBinaryFLOATComparisonOperation(~x~0, ~convertINTToFLOAT(0)) then 1 else 0)); VAL [#in~cond=0] [L2] ~cond := #in~cond; VAL [#in~cond=0, ~cond=0] [L2] assume 0 == ~cond; VAL [#in~cond=0, ~cond=0] [L2] assert false; VAL [#in~cond=0, ~cond=0] [?] CALL call ULTIMATE.init(); [?] RET call ULTIMATE.init(); [?] CALL call #t~ret0 := main(); [L9] ~x~0 := 1.0; [L10] ~x1~0 := ~someBinaryArithmeticFLOAToperation(~x~0, 2.5); VAL [~x~0=1.0] [L12-L16] COND TRUE !~someBinaryFLOATComparisonOperation(~x1~0, ~x~0) VAL [~x~0=1.0] [L18] CALL call __VERIFIER_assert((if ~someBinaryFLOATComparisonOperation(~x~0, ~convertINTToFLOAT(0)) then 1 else 0)); VAL [#in~cond=0] [L2] ~cond := #in~cond; VAL [#in~cond=0, ~cond=0] [L2] COND TRUE 0 == ~cond VAL [#in~cond=0, ~cond=0] [L2] assert false; VAL [#in~cond=0, ~cond=0] ----- ----- class de.uni_freiburg.informatik.ultimate.boogie.procedureinliner.backtranslation.InlinerBacktranslator [?] CALL call ULTIMATE.init(); [?] RET call ULTIMATE.init(); [?] CALL call #t~ret0 := main(); [L9] ~x~0 := 1.0; [L10] ~x1~0 := ~someBinaryArithmeticFLOAToperation(~x~0, 2.5); VAL [~x~0=1.0] [L12-L16] COND TRUE !~someBinaryFLOATComparisonOperation(~x1~0, ~x~0) VAL [~x~0=1.0] [L18] CALL call __VERIFIER_assert((if ~someBinaryFLOATComparisonOperation(~x~0, ~convertINTToFLOAT(0)) then 1 else 0)); VAL [#in~cond=0] [L2] ~cond := #in~cond; VAL [#in~cond=0, ~cond=0] [L2] COND TRUE 0 == ~cond VAL [#in~cond=0, ~cond=0] [L2] assert false; VAL [#in~cond=0, ~cond=0] [?] CALL call ULTIMATE.init(); [?] RET call ULTIMATE.init(); [?] CALL call #t~ret0 := main(); [L9] ~x~0 := 1.0; [L10] ~x1~0 := ~someBinaryArithmeticFLOAToperation(~x~0, 2.5); VAL [~x~0=1.0] [L12-L16] COND TRUE !~someBinaryFLOATComparisonOperation(~x1~0, ~x~0) VAL [~x~0=1.0] [L18] CALL call __VERIFIER_assert((if ~someBinaryFLOATComparisonOperation(~x~0, ~convertINTToFLOAT(0)) then 1 else 0)); VAL [#in~cond=0] [L2] ~cond := #in~cond; VAL [#in~cond=0, ~cond=0] [L2] COND TRUE 0 == ~cond VAL [#in~cond=0, ~cond=0] [L2] assert false; VAL [#in~cond=0, ~cond=0] ----- ----- class de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieBacktranslator [?] CALL call ULTIMATE.init(); [?] RET call ULTIMATE.init(); [?] CALL call #t~ret0 := main(); [L9] ~x~0 := 1.0; [L10] ~x1~0 := ~someBinaryArithmeticFLOAToperation(~x~0, 2.5); VAL [~x~0=1.0] [L12-L16] COND TRUE !~someBinaryFLOATComparisonOperation(~x1~0, ~x~0) VAL [~x~0=1.0] [L18] CALL call __VERIFIER_assert((if ~someBinaryFLOATComparisonOperation(~x~0, ~convertINTToFLOAT(0)) then 1 else 0)); VAL [#in~cond=0] [L2] ~cond := #in~cond; VAL [#in~cond=0, ~cond=0] [L2] COND TRUE 0 == ~cond VAL [#in~cond=0, ~cond=0] [L2] assert false; VAL [#in~cond=0, ~cond=0] [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] ----- [2018-11-22 23:18:13,473 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.11 11:18:13 BoogieIcfgContainer [2018-11-22 23:18:13,473 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-11-22 23:18:13,474 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2018-11-22 23:18:13,474 INFO L271 PluginConnector]: Initializing Witness Printer... [2018-11-22 23:18:13,474 INFO L276 PluginConnector]: Witness Printer initialized [2018-11-22 23:18:13,474 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 11:18:13" (3/4) ... [2018-11-22 23:18:13,478 INFO L147 WitnessPrinter]: No result that supports witness generation found [2018-11-22 23:18:13,478 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2018-11-22 23:18:13,479 INFO L168 Benchmark]: Toolchain (without parser) took 560.68 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 141.0 MB). Free memory was 959.3 MB in the beginning and 1.1 GB in the end (delta: -154.3 MB). There was no memory consumed. Max. memory is 11.5 GB. [2018-11-22 23:18:13,481 INFO L168 Benchmark]: CDTParser took 0.15 ms. Allocated memory is still 1.0 GB. Free memory is still 985.6 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-11-22 23:18:13,481 INFO L168 Benchmark]: CACSL2BoogieTranslator took 166.02 ms. Allocated memory is still 1.0 GB. Free memory was 959.3 MB in the beginning and 948.5 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. [2018-11-22 23:18:13,482 INFO L168 Benchmark]: Boogie Procedure Inliner took 13.36 ms. Allocated memory is still 1.0 GB. Free memory is still 948.5 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-11-22 23:18:13,482 INFO L168 Benchmark]: Boogie Preprocessor took 46.84 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 141.0 MB). Free memory was 948.5 MB in the beginning and 1.1 GB in the end (delta: -192.8 MB). Peak memory consumption was 16.8 MB. Max. memory is 11.5 GB. [2018-11-22 23:18:13,483 INFO L168 Benchmark]: RCFGBuilder took 123.67 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 14.3 MB). Peak memory consumption was 14.3 MB. Max. memory is 11.5 GB. [2018-11-22 23:18:13,483 INFO L168 Benchmark]: TraceAbstraction took 202.10 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: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. [2018-11-22 23:18:13,484 INFO L168 Benchmark]: Witness Printer took 5.04 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: 2.7 MB). Peak memory consumption was 2.7 MB. Max. memory is 11.5 GB. [2018-11-22 23:18:13,488 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.15 ms. Allocated memory is still 1.0 GB. Free memory is still 985.6 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 166.02 ms. Allocated memory is still 1.0 GB. Free memory was 959.3 MB in the beginning and 948.5 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 13.36 ms. Allocated memory is still 1.0 GB. Free memory is still 948.5 MB. There was no memory consumed. Max. memory is 11.5 GB. * Boogie Preprocessor took 46.84 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 141.0 MB). Free memory was 948.5 MB in the beginning and 1.1 GB in the end (delta: -192.8 MB). Peak memory consumption was 16.8 MB. Max. memory is 11.5 GB. * RCFGBuilder took 123.67 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 14.3 MB). Peak memory consumption was 14.3 MB. Max. memory is 11.5 GB. * TraceAbstraction took 202.10 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: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. * Witness Printer took 5.04 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: 2.7 MB). Peak memory consumption was 2.7 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 12, 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-aa41828 [2018-11-22 23:18:15,149 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-11-22 23:18:15,151 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-11-22 23:18:15,161 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-11-22 23:18:15,162 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-11-22 23:18:15,162 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-11-22 23:18:15,164 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-11-22 23:18:15,165 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-11-22 23:18:15,166 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-11-22 23:18:15,167 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-11-22 23:18:15,168 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-11-22 23:18:15,168 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-11-22 23:18:15,170 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-11-22 23:18:15,171 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-11-22 23:18:15,171 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-11-22 23:18:15,172 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-11-22 23:18:15,173 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-11-22 23:18:15,175 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-11-22 23:18:15,177 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-11-22 23:18:15,178 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-11-22 23:18:15,179 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-11-22 23:18:15,180 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-11-22 23:18:15,183 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-11-22 23:18:15,183 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-11-22 23:18:15,183 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-11-22 23:18:15,184 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-11-22 23:18:15,185 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-11-22 23:18:15,186 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-11-22 23:18:15,187 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-11-22 23:18:15,188 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-11-22 23:18:15,188 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-11-22 23:18:15,189 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-11-22 23:18:15,189 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-11-22 23:18:15,189 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-11-22 23:18:15,190 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-11-22 23:18:15,191 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-11-22 23:18:15,192 INFO L98 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/working_dir_72544dee-2f7e-41a9-83b3-63069c466a3b/bin-2019/uautomizer/config/svcomp-Reach-32bit-Automizer_Bitvector.epf [2018-11-22 23:18:15,204 INFO L110 SettingsManager]: Loading preferences was successful [2018-11-22 23:18:15,204 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-11-22 23:18:15,205 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-11-22 23:18:15,205 INFO L133 SettingsManager]: * ... calls to implemented procedures=ONLY_FOR_CONCURRENT_PROGRAMS [2018-11-22 23:18:15,206 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-11-22 23:18:15,206 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-11-22 23:18:15,206 INFO L133 SettingsManager]: * Use SBE=true [2018-11-22 23:18:15,206 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-11-22 23:18:15,206 INFO L133 SettingsManager]: * sizeof long=4 [2018-11-22 23:18:15,207 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-11-22 23:18:15,207 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-11-22 23:18:15,207 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-11-22 23:18:15,207 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-11-22 23:18:15,207 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-11-22 23:18:15,207 INFO L133 SettingsManager]: * Use bitvectors instead of ints=true [2018-11-22 23:18:15,207 INFO L133 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2018-11-22 23:18:15,208 INFO L133 SettingsManager]: * sizeof long double=12 [2018-11-22 23:18:15,208 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-11-22 23:18:15,208 INFO L133 SettingsManager]: * Use constant arrays=true [2018-11-22 23:18:15,208 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-11-22 23:18:15,210 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-11-22 23:18:15,210 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-11-22 23:18:15,210 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-11-22 23:18:15,211 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-11-22 23:18:15,211 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-11-22 23:18:15,211 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-11-22 23:18:15,211 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-11-22 23:18:15,211 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-11-22 23:18:15,211 INFO L133 SettingsManager]: * Trace refinement strategy=WOLF [2018-11-22 23:18:15,212 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-11-22 23:18:15,212 INFO L133 SettingsManager]: * Command for external solver=cvc4nyu --tear-down-incremental --rewrite-divk --print-success --lang smt [2018-11-22 23:18:15,212 INFO L133 SettingsManager]: * Logic for external solver=AUFBV [2018-11-22 23:18:15,212 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_72544dee-2f7e-41a9-83b3-63069c466a3b/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 [2018-11-22 23:18:15,248 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-11-22 23:18:15,259 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-11-22 23:18:15,262 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-11-22 23:18:15,264 INFO L271 PluginConnector]: Initializing CDTParser... [2018-11-22 23:18:15,264 INFO L276 PluginConnector]: CDTParser initialized [2018-11-22 23:18:15,265 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/working_dir_72544dee-2f7e-41a9-83b3-63069c466a3b/bin-2019/uautomizer/../../sv-benchmarks/c/floats-esbmc-regression/Float_div_true-unreach-call.i [2018-11-22 23:18:15,319 INFO L221 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_72544dee-2f7e-41a9-83b3-63069c466a3b/bin-2019/uautomizer/data/184ad1150/e193aabc9c53470b8c39302681b7b0bb/FLAG344b3d3d5 [2018-11-22 23:18:15,654 INFO L307 CDTParser]: Found 1 translation units. [2018-11-22 23:18:15,654 INFO L161 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/working_dir_72544dee-2f7e-41a9-83b3-63069c466a3b/sv-benchmarks/c/floats-esbmc-regression/Float_div_true-unreach-call.i [2018-11-22 23:18:15,658 INFO L355 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_72544dee-2f7e-41a9-83b3-63069c466a3b/bin-2019/uautomizer/data/184ad1150/e193aabc9c53470b8c39302681b7b0bb/FLAG344b3d3d5 [2018-11-22 23:18:15,665 INFO L363 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/working_dir_72544dee-2f7e-41a9-83b3-63069c466a3b/bin-2019/uautomizer/data/184ad1150/e193aabc9c53470b8c39302681b7b0bb [2018-11-22 23:18:15,667 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-11-22 23:18:15,668 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2018-11-22 23:18:15,669 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-11-22 23:18:15,669 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-11-22 23:18:15,672 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-11-22 23:18:15,673 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 11:18:15" (1/1) ... [2018-11-22 23:18:15,674 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6fe1055b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 11:18:15, skipping insertion in model container [2018-11-22 23:18:15,675 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 11:18:15" (1/1) ... [2018-11-22 23:18:15,680 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-11-22 23:18:15,691 INFO L176 MainTranslator]: Built tables and reachable declarations [2018-11-22 23:18:15,805 INFO L201 PostProcessor]: Analyzing one entry point: main [2018-11-22 23:18:15,810 INFO L191 MainTranslator]: Completed pre-run [2018-11-22 23:18:15,822 INFO L201 PostProcessor]: Analyzing one entry point: main [2018-11-22 23:18:15,830 INFO L195 MainTranslator]: Completed translation [2018-11-22 23:18:15,831 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 11:18:15 WrapperNode [2018-11-22 23:18:15,831 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-11-22 23:18:15,833 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-11-22 23:18:15,833 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-11-22 23:18:15,833 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-11-22 23:18:15,839 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 11:18:15" (1/1) ... [2018-11-22 23:18:15,842 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 11:18:15" (1/1) ... [2018-11-22 23:18:15,846 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-11-22 23:18:15,846 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-11-22 23:18:15,847 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-11-22 23:18:15,847 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-11-22 23:18:15,852 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 11:18:15" (1/1) ... [2018-11-22 23:18:15,852 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 11:18:15" (1/1) ... [2018-11-22 23:18:15,853 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 11:18:15" (1/1) ... [2018-11-22 23:18:15,853 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 11:18:15" (1/1) ... [2018-11-22 23:18:15,857 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 11:18:15" (1/1) ... [2018-11-22 23:18:15,860 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 11:18:15" (1/1) ... [2018-11-22 23:18:15,860 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 11:18:15" (1/1) ... [2018-11-22 23:18:15,862 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-11-22 23:18:15,862 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-11-22 23:18:15,862 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-11-22 23:18:15,862 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-11-22 23:18:15,862 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 11:18:15" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_72544dee-2f7e-41a9-83b3-63069c466a3b/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 [2018-11-22 23:18:15,943 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-11-22 23:18:15,943 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-11-22 23:18:15,943 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-11-22 23:18:15,943 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-11-22 23:18:15,943 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-11-22 23:18:15,943 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-11-22 23:18:15,943 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2018-11-22 23:18:15,943 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2018-11-22 23:18:16,397 INFO L275 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-11-22 23:18:16,397 INFO L280 CfgBuilder]: Removed 1 assue(true) statements. [2018-11-22 23:18:16,397 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 11:18:16 BoogieIcfgContainer [2018-11-22 23:18:16,398 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-11-22 23:18:16,398 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-11-22 23:18:16,398 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-11-22 23:18:16,400 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-11-22 23:18:16,400 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.11 11:18:15" (1/3) ... [2018-11-22 23:18:16,401 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@19ebc862 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.11 11:18:16, skipping insertion in model container [2018-11-22 23:18:16,401 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 11:18:15" (2/3) ... [2018-11-22 23:18:16,401 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@19ebc862 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.11 11:18:16, skipping insertion in model container [2018-11-22 23:18:16,401 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 11:18:16" (3/3) ... [2018-11-22 23:18:16,402 INFO L112 eAbstractionObserver]: Analyzing ICFG Float_div_true-unreach-call.i [2018-11-22 23:18:16,408 INFO L156 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-11-22 23:18:16,411 INFO L168 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-11-22 23:18:16,420 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-11-22 23:18:16,439 INFO L133 ementStrategyFactory]: Using default assertion order modulation [2018-11-22 23:18:16,439 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-11-22 23:18:16,439 INFO L383 AbstractCegarLoop]: Hoare is true [2018-11-22 23:18:16,439 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-11-22 23:18:16,439 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-11-22 23:18:16,440 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-11-22 23:18:16,440 INFO L387 AbstractCegarLoop]: Difference is false [2018-11-22 23:18:16,440 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-11-22 23:18:16,440 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-11-22 23:18:16,452 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states. [2018-11-22 23:18:16,455 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2018-11-22 23:18:16,455 INFO L394 BasicCegarLoop]: Found error trace [2018-11-22 23:18:16,456 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-22 23:18:16,457 INFO L423 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-22 23:18:16,460 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-22 23:18:16,460 INFO L82 PathProgramCache]: Analyzing trace with hash -14991171, now seen corresponding path program 1 times [2018-11-22 23:18:16,463 INFO L223 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-11-22 23:18:16,463 INFO L69 tionRefinementEngine]: Using refinement strategy WolfRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_72544dee-2f7e-41a9-83b3-63069c466a3b/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 [2018-11-22 23:18:16,467 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-22 23:18:16,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-22 23:18:16,526 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-22 23:18:17,125 WARN L180 SmtUtils]: Spent 409.00 ms on a formula simplification that was a NOOP. DAG size: 11 [2018-11-22 23:18:17,132 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-22 23:18:17,132 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-11-22 23:18:17,140 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-22 23:18:17,140 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-11-22 23:18:17,143 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-11-22 23:18:17,150 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-11-22 23:18:17,150 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-22 23:18:17,152 INFO L87 Difference]: Start difference. First operand 18 states. Second operand 3 states. [2018-11-22 23:18:17,326 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-22 23:18:17,326 INFO L93 Difference]: Finished difference Result 31 states and 36 transitions. [2018-11-22 23:18:17,326 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-11-22 23:18:17,327 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 10 [2018-11-22 23:18:17,328 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-22 23:18:17,332 INFO L225 Difference]: With dead ends: 31 [2018-11-22 23:18:17,332 INFO L226 Difference]: Without dead ends: 12 [2018-11-22 23:18:17,334 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 7 SyntacticMatches, 1 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-22 23:18:17,344 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12 states. [2018-11-22 23:18:17,354 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12 to 12. [2018-11-22 23:18:17,355 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2018-11-22 23:18:17,355 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 12 transitions. [2018-11-22 23:18:17,356 INFO L78 Accepts]: Start accepts. Automaton has 12 states and 12 transitions. Word has length 10 [2018-11-22 23:18:17,357 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-22 23:18:17,357 INFO L480 AbstractCegarLoop]: Abstraction has 12 states and 12 transitions. [2018-11-22 23:18:17,357 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-11-22 23:18:17,357 INFO L276 IsEmpty]: Start isEmpty. Operand 12 states and 12 transitions. [2018-11-22 23:18:17,357 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2018-11-22 23:18:17,357 INFO L394 BasicCegarLoop]: Found error trace [2018-11-22 23:18:17,357 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-22 23:18:17,358 INFO L423 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-22 23:18:17,358 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-22 23:18:17,358 INFO L82 PathProgramCache]: Analyzing trace with hash -429188558, now seen corresponding path program 1 times [2018-11-22 23:18:17,358 INFO L223 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-11-22 23:18:17,358 INFO L69 tionRefinementEngine]: Using refinement strategy WolfRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_72544dee-2f7e-41a9-83b3-63069c466a3b/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 [2018-11-22 23:18:17,371 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-22 23:18:17,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-22 23:18:17,455 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-22 23:18:18,089 WARN L180 SmtUtils]: Spent 407.00 ms on a formula simplification that was a NOOP. DAG size: 12 [2018-11-22 23:18:18,092 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-22 23:18:18,092 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-11-22 23:18:20,668 WARN L180 SmtUtils]: Spent 281.00 ms on a formula simplification that was a NOOP. DAG size: 7 [2018-11-22 23:18:20,676 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-22 23:18:20,683 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-22 23:18:20,683 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 6 [2018-11-22 23:18:20,684 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-11-22 23:18:20,685 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-11-22 23:18:20,685 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-11-22 23:18:20,685 INFO L87 Difference]: Start difference. First operand 12 states and 12 transitions. Second operand 6 states. [2018-11-22 23:18:24,990 WARN L180 SmtUtils]: Spent 1.52 s on a formula simplification that was a NOOP. DAG size: 11 [2018-11-22 23:18:27,609 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-22 23:18:27,609 INFO L93 Difference]: Finished difference Result 20 states and 22 transitions. [2018-11-22 23:18:27,630 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-11-22 23:18:27,631 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 11 [2018-11-22 23:18:27,631 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-22 23:18:27,631 INFO L225 Difference]: With dead ends: 20 [2018-11-22 23:18:27,631 INFO L226 Difference]: Without dead ends: 15 [2018-11-22 23:18:27,632 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 15 SyntacticMatches, 2 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 6.2s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2018-11-22 23:18:27,632 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15 states. [2018-11-22 23:18:27,635 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15 to 15. [2018-11-22 23:18:27,635 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2018-11-22 23:18:27,635 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 15 transitions. [2018-11-22 23:18:27,636 INFO L78 Accepts]: Start accepts. Automaton has 15 states and 15 transitions. Word has length 11 [2018-11-22 23:18:27,636 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-22 23:18:27,636 INFO L480 AbstractCegarLoop]: Abstraction has 15 states and 15 transitions. [2018-11-22 23:18:27,636 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-11-22 23:18:27,636 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states and 15 transitions. [2018-11-22 23:18:27,636 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2018-11-22 23:18:27,636 INFO L394 BasicCegarLoop]: Found error trace [2018-11-22 23:18:27,637 INFO L402 BasicCegarLoop]: trace histogram [4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-22 23:18:27,637 INFO L423 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-22 23:18:27,637 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-22 23:18:27,637 INFO L82 PathProgramCache]: Analyzing trace with hash 1090549245, now seen corresponding path program 2 times [2018-11-22 23:18:27,637 INFO L223 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-11-22 23:18:27,637 INFO L69 tionRefinementEngine]: Using refinement strategy WolfRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_72544dee-2f7e-41a9-83b3-63069c466a3b/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 [2018-11-22 23:18:27,646 INFO L101 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2018-11-22 23:18:27,830 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-11-22 23:18:27,831 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-11-22 23:18:27,843 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-22 23:18:28,583 WARN L180 SmtUtils]: Spent 476.00 ms on a formula simplification that was a NOOP. DAG size: 15 [2018-11-22 23:18:28,586 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-22 23:18:28,587 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-11-22 23:18:35,981 WARN L180 SmtUtils]: Spent 1.50 s on a formula simplification that was a NOOP. DAG size: 11 [2018-11-22 23:18:38,539 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 [2018-11-22 23:18:40,619 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 [2018-11-22 23:18:42,696 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 [2018-11-22 23:18:44,782 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 [2018-11-22 23:18:45,679 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 9 not checked. [2018-11-22 23:18:45,687 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-22 23:18:45,688 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 10] total 15 [2018-11-22 23:18:45,688 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2018-11-22 23:18:45,688 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2018-11-22 23:18:45,688 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=105, Unknown=5, NotChecked=66, Total=210 [2018-11-22 23:18:45,689 INFO L87 Difference]: Start difference. First operand 15 states and 15 transitions. Second operand 15 states. [2018-11-22 23:19:01,890 WARN L180 SmtUtils]: Spent 14.66 s on a formula simplification. DAG size of input: 24 DAG size of output: 12 [2018-11-22 23:19:05,202 WARN L854 $PredicateComparison]: unable to prove that (let ((.cse0 ((_ to_fp 8 24) roundNearestTiesToEven (_ bv0 32))) (.cse2 ((_ 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))) (let ((.cse1 (fp.div roundNearestTiesToEven (fp.div roundNearestTiesToEven c_main_~x1~0 .cse2) .cse2))) (or (fp.eq .cse1 .cse0) (not (fp.eq (fp.div roundNearestTiesToEven .cse1 .cse2) .cse1)))) (= c_main_~x1~0 (fp.div roundNearestTiesToEven (fp.div roundNearestTiesToEven ((_ to_fp 8 24) roundNearestTiesToEven 1.0) .cse2) .cse2)))) is different from true [2018-11-22 23:19:10,332 WARN L180 SmtUtils]: Spent 3.92 s on a formula simplification. DAG size of input: 24 DAG size of output: 14 [2018-11-22 23:19:18,873 WARN L180 SmtUtils]: Spent 3.52 s on a formula simplification that was a NOOP. DAG size: 17 [2018-11-22 23:19:27,597 WARN L180 SmtUtils]: Spent 4.59 s on a formula simplification that was a NOOP. DAG size: 14 [2018-11-22 23:19:32,095 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-22 23:19:32,095 INFO L93 Difference]: Finished difference Result 26 states and 28 transitions. [2018-11-22 23:19:32,095 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2018-11-22 23:19:32,095 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 14 [2018-11-22 23:19:32,096 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-22 23:19:32,096 INFO L225 Difference]: With dead ends: 26 [2018-11-22 23:19:32,096 INFO L226 Difference]: Without dead ends: 18 [2018-11-22 23:19:32,097 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 12 SyntacticMatches, 2 SemanticMatches, 20 ConstructedPredicates, 4 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 57.3s TimeCoverageRelationStatistics Valid=69, Invalid=247, Unknown=6, NotChecked=140, Total=462 [2018-11-22 23:19:32,097 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18 states. [2018-11-22 23:19:32,101 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18 to 18. [2018-11-22 23:19:32,101 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2018-11-22 23:19:32,102 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 18 transitions. [2018-11-22 23:19:32,102 INFO L78 Accepts]: Start accepts. Automaton has 18 states and 18 transitions. Word has length 14 [2018-11-22 23:19:32,102 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-22 23:19:32,102 INFO L480 AbstractCegarLoop]: Abstraction has 18 states and 18 transitions. [2018-11-22 23:19:32,102 INFO L481 AbstractCegarLoop]: Interpolant automaton has 15 states. [2018-11-22 23:19:32,103 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 18 transitions. [2018-11-22 23:19:32,103 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2018-11-22 23:19:32,103 INFO L394 BasicCegarLoop]: Found error trace [2018-11-22 23:19:32,103 INFO L402 BasicCegarLoop]: trace histogram [7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-22 23:19:32,103 INFO L423 AbstractCegarLoop]: === Iteration 4 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-22 23:19:32,104 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-22 23:19:32,104 INFO L82 PathProgramCache]: Analyzing trace with hash -1945796014, now seen corresponding path program 3 times [2018-11-22 23:19:32,104 INFO L223 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-11-22 23:19:32,104 INFO L69 tionRefinementEngine]: Using refinement strategy WolfRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_72544dee-2f7e-41a9-83b3-63069c466a3b/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 [2018-11-22 23:19:32,108 INFO L101 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2018-11-22 23:19:32,379 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2018-11-22 23:19:32,379 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-11-22 23:19:32,396 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-22 23:19:33,986 WARN L180 SmtUtils]: Spent 783.00 ms on a formula simplification that was a NOOP. DAG size: 7 [2018-11-22 23:19:43,492 WARN L180 SmtUtils]: Spent 6.07 s on a formula simplification that was a NOOP. DAG size: 15 [2018-11-22 23:19:45,537 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 [2018-11-22 23:19:47,592 WARN L854 $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 true [2018-11-22 23:20:10,566 WARN L180 SmtUtils]: Spent 11.21 s on a formula simplification that was a NOOP. DAG size: 22 [2018-11-22 23:20:33,719 WARN L180 SmtUtils]: Spent 12.34 s on a formula simplification that was a NOOP. DAG size: 22 [2018-11-22 23:20:39,889 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 [2018-11-22 23:20:41,940 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 [2018-11-22 23:20:41,941 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2018-11-22 23:20:41,942 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-11-22 23:20:41,959 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-22 23:20:41,959 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2018-11-22 23:20:41,959 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2018-11-22 23:20:41,960 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2018-11-22 23:20:41,960 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=16, Unknown=8, NotChecked=18, Total=56 [2018-11-22 23:20:41,960 INFO L87 Difference]: Start difference. First operand 18 states and 18 transitions. Second operand 8 states. [2018-11-22 23:20:54,176 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-22 23:20:54,176 INFO L93 Difference]: Finished difference Result 18 states and 18 transitions. [2018-11-22 23:20:54,227 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-11-22 23:20:54,227 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 17 [2018-11-22 23:20:54,227 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-22 23:20:54,227 INFO L225 Difference]: With dead ends: 18 [2018-11-22 23:20:54,228 INFO L226 Difference]: Without dead ends: 0 [2018-11-22 23:20:54,228 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 2 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 55.2s TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=8, NotChecked=18, Total=56 [2018-11-22 23:20:54,228 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2018-11-22 23:20:54,228 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2018-11-22 23:20:54,229 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2018-11-22 23:20:54,229 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2018-11-22 23:20:54,229 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 17 [2018-11-22 23:20:54,229 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-22 23:20:54,229 INFO L480 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2018-11-22 23:20:54,229 INFO L481 AbstractCegarLoop]: Interpolant automaton has 8 states. [2018-11-22 23:20:54,229 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2018-11-22 23:20:54,229 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2018-11-22 23:20:54,232 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2018-11-22 23:20:54,436 WARN L180 SmtUtils]: Spent 137.00 ms on a formula simplification. DAG size of input: 29 DAG size of output: 1 [2018-11-22 23:21:30,272 WARN L180 SmtUtils]: Spent 35.84 s on a formula simplification that was a NOOP. DAG size: 25 [2018-11-22 23:21:50,800 WARN L180 SmtUtils]: Spent 20.53 s on a formula simplification. DAG size of input: 24 DAG size of output: 15 [2018-11-22 23:21:50,802 INFO L451 ceAbstractionStarter]: At program point ULTIMATE.initFINAL(line -1) the Hoare annotation is: true [2018-11-22 23:21:50,802 INFO L448 ceAbstractionStarter]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2018-11-22 23:21:50,802 INFO L448 ceAbstractionStarter]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2018-11-22 23:21:50,803 INFO L451 ceAbstractionStarter]: At program point L-1(line -1) the Hoare annotation is: true [2018-11-22 23:21:50,803 INFO L451 ceAbstractionStarter]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2018-11-22 23:21:50,803 INFO L448 ceAbstractionStarter]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2018-11-22 23:21:50,803 INFO L451 ceAbstractionStarter]: At program point mainENTRY(lines 7 20) the Hoare annotation is: true [2018-11-22 23:21:50,803 INFO L448 ceAbstractionStarter]: For program point mainEXIT(lines 7 20) no Hoare annotation was computed. [2018-11-22 23:21:50,803 INFO L448 ceAbstractionStarter]: For program point L18(line 18) no Hoare annotation was computed. [2018-11-22 23:21:50,803 INFO L448 ceAbstractionStarter]: For program point mainFINAL(lines 7 20) no Hoare annotation was computed. [2018-11-22 23:21:50,804 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))))) [2018-11-22 23:21:50,804 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)))))) [2018-11-22 23:21:50,804 INFO L448 ceAbstractionStarter]: For program point L2-1(line 2) no Hoare annotation was computed. [2018-11-22 23:21:50,804 INFO L448 ceAbstractionStarter]: For program point L2-3(line 2) no Hoare annotation was computed. [2018-11-22 23:21:50,804 INFO L451 ceAbstractionStarter]: At program point __VERIFIER_assertENTRY(line 2) the Hoare annotation is: true [2018-11-22 23:21:50,804 INFO L448 ceAbstractionStarter]: For program point __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION(line 2) no Hoare annotation was computed. [2018-11-22 23:21:50,805 INFO L448 ceAbstractionStarter]: For program point __VERIFIER_assertEXIT(line 2) no Hoare annotation was computed. [2018-11-22 23:21:50,805 INFO L448 ceAbstractionStarter]: For program point L2(line 2) no Hoare annotation was computed. [2018-11-22 23:21:50,809 WARN L416 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~x~0_14,QUANTIFIED] [2018-11-22 23:21:50,812 WARN L416 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2018-11-22 23:21:50,812 WARN L416 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~x~0_14,QUANTIFIED] [2018-11-22 23:21:50,812 WARN L416 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2018-11-22 23:21:50,812 WARN L416 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2018-11-22 23:21:50,813 WARN L416 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2018-11-22 23:21:50,816 WARN L416 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~x~0_14,QUANTIFIED] [2018-11-22 23:21:50,816 WARN L416 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2018-11-22 23:21:50,816 WARN L416 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~x~0_14,QUANTIFIED] [2018-11-22 23:21:50,816 WARN L416 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2018-11-22 23:21:50,816 WARN L416 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2018-11-22 23:21:50,817 WARN L416 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2018-11-22 23:21:50,818 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.11 11:21:50 BoogieIcfgContainer [2018-11-22 23:21:50,819 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-11-22 23:21:50,819 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2018-11-22 23:21:50,819 INFO L271 PluginConnector]: Initializing Witness Printer... [2018-11-22 23:21:50,819 INFO L276 PluginConnector]: Witness Printer initialized [2018-11-22 23:21:50,820 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 11:18:16" (3/4) ... [2018-11-22 23:21:50,823 INFO L144 WitnessPrinter]: Generating witness for correct program [2018-11-22 23:21:50,828 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure ULTIMATE.init [2018-11-22 23:21:50,828 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure main [2018-11-22 23:21:50,828 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure __VERIFIER_assert [2018-11-22 23:21:50,831 INFO L879 BoogieBacktranslator]: Reduced CFG by removing 7 nodes and edges [2018-11-22 23:21:50,831 INFO L879 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2018-11-22 23:21:50,831 INFO L879 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2018-11-22 23:21:50,852 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)) [2018-11-22 23:21:50,861 INFO L145 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/working_dir_72544dee-2f7e-41a9-83b3-63069c466a3b/bin-2019/uautomizer/witness.graphml [2018-11-22 23:21:50,861 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2018-11-22 23:21:50,861 INFO L168 Benchmark]: Toolchain (without parser) took 215193.66 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 142.6 MB). Free memory was 949.7 MB in the beginning and 979.6 MB in the end (delta: -29.8 MB). Peak memory consumption was 112.8 MB. Max. memory is 11.5 GB. [2018-11-22 23:21:50,862 INFO L168 Benchmark]: CDTParser took 0.20 ms. Allocated memory is still 1.0 GB. Free memory is still 978.7 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-11-22 23:21:50,862 INFO L168 Benchmark]: CACSL2BoogieTranslator took 163.60 ms. Allocated memory is still 1.0 GB. Free memory was 949.7 MB in the beginning and 939.0 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. [2018-11-22 23:21:50,863 INFO L168 Benchmark]: Boogie Procedure Inliner took 13.25 ms. Allocated memory is still 1.0 GB. Free memory was 939.0 MB in the beginning and 933.6 MB in the end (delta: 5.4 MB). Peak memory consumption was 5.4 MB. Max. memory is 11.5 GB. [2018-11-22 23:21:50,863 INFO L168 Benchmark]: Boogie Preprocessor took 15.15 ms. Allocated memory is still 1.0 GB. Free memory is still 933.6 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-11-22 23:21:50,863 INFO L168 Benchmark]: RCFGBuilder took 535.88 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 142.6 MB). Free memory was 933.6 MB in the beginning and 1.1 GB in the end (delta: -179.8 MB). Peak memory consumption was 20.3 MB. Max. memory is 11.5 GB. [2018-11-22 23:21:50,864 INFO L168 Benchmark]: TraceAbstraction took 214420.62 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 979.6 MB in the end (delta: 133.9 MB). Peak memory consumption was 133.9 MB. Max. memory is 11.5 GB. [2018-11-22 23:21:50,864 INFO L168 Benchmark]: Witness Printer took 41.86 ms. Allocated memory is still 1.2 GB. Free memory is still 979.6 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-11-22 23:21:50,867 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.20 ms. Allocated memory is still 1.0 GB. Free memory is still 978.7 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 163.60 ms. Allocated memory is still 1.0 GB. Free memory was 949.7 MB in the beginning and 939.0 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 13.25 ms. Allocated memory is still 1.0 GB. Free memory was 939.0 MB in the beginning and 933.6 MB in the end (delta: 5.4 MB). Peak memory consumption was 5.4 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 15.15 ms. Allocated memory is still 1.0 GB. Free memory is still 933.6 MB. There was no memory consumed. Max. memory is 11.5 GB. * RCFGBuilder took 535.88 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 142.6 MB). Free memory was 933.6 MB in the beginning and 1.1 GB in the end (delta: -179.8 MB). Peak memory consumption was 20.3 MB. Max. memory is 11.5 GB. * TraceAbstraction took 214420.62 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 979.6 MB in the end (delta: 133.9 MB). Peak memory consumption was 133.9 MB. Max. memory is 11.5 GB. * Witness Printer took 41.86 ms. Allocated memory is still 1.2 GB. Free memory is still 979.6 MB. 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 [2018-11-22 23:21:50,876 WARN L416 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~x~0_14,QUANTIFIED] [2018-11-22 23:21:50,876 WARN L416 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2018-11-22 23:21:50,877 WARN L416 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~x~0_14,QUANTIFIED] [2018-11-22 23:21:50,877 WARN L416 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2018-11-22 23:21:50,877 WARN L416 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2018-11-22 23:21:50,877 WARN L416 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2018-11-22 23:21:50,878 WARN L416 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~x~0_14,QUANTIFIED] [2018-11-22 23:21:50,878 WARN L416 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2018-11-22 23:21:50,878 WARN L416 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~x~0_14,QUANTIFIED] [2018-11-22 23:21:50,878 WARN L416 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2018-11-22 23:21:50,878 WARN L416 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2018-11-22 23:21:50,879 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, 214.3s OverallTime, 4 OverallIterations, 7 TraceHistogramMax, 65.8s AutomataDifference, 0.0s DeadEndRemovalTime, 56.5s HoareAnnotationTime, HoareTripleCheckerStatistics: 40 SDtfs, 4 SDslu, 124 SDs, 0 SdLazy, 83 SolverSat, 10 SolverUnsat, 6 SolverUnknown, 0 SolverNotchecked, 22.5s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 82 GetRequests, 44 SyntacticMatches, 5 SemanticMatches, 33 ConstructedPredicates, 6 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 119.4s 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, 340 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 7 FomulaSimplificationsInter, 129 FormulaSimplificationTreeSizeReductionInter, 56.5s HoareSimplificationTimeInter, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.5s SatisfiabilityAnalysisTime, 91.2s 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...